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Introduction

One of the research tasks that’s given me a tremendous amount of benefit during my PhD is the writing of a mini-review.  I use the term “mini-review” only because this task is something akin to completing a book review (only a little smaller)…and because frankly, I don’t know what else to call what I’m doing.

What is a mini-review

A mini-review (like a book review) is simply the careful summary of a particular scholar’s work.  It is usually a 2-3 page articulation of a work’s main thesis, supporting arguments and major points.

After this is complete, a final step in the mini-review is to take the content of 1-2 pages and shrink that down to one paragraph that you place at the top as a summary of the whole review.

Of course, creating a mini-review implies that you’ve actually sat down and spent some time in the book or article.  While it may take some time to put it together, the rewards are many (as I will enumerate later on.)

The Why of a Mini-Review

There are at least two major reasons for spending some time on this task:

1) You avoid the temptation to skim a work

Let’s face it, it is often very tempting to superficially skim a work, perhaps combine 2-3 book reviews and think you have an idea of an author’s contribution to your thesis.

It doesn’t take great skill to pull this off.  It is quite a different matter to really wrestle with an author’s argument and to reflect on how it fits within your overall thesis.

2) You develop the critical skill of summarizing

There are two skills that are absolutely essentially to the completion of your PhD (these aren’t the only two, but they are pretty important).

One is the ability to summarize an argument the other is the ability to synthesize various works into a cohesive narrative.

One entire chapter of your dissertation (your literature review) is essentially the concise summation (and synthesis) of dozens and dozens of works related to your topic.

But beyond that, every section of your dissertation is an interaction of your ideas with the ideas of other scholars (whose work you must summarize…)  Ditto for being able to create rich and meaningful footnotes that capture the essence of a work.

We might even say that summarizing arguments is the work horse of your PhD program around which you create your original contribution.

Benefits of Doing Mini-Reviews

The benefits to doing this kind of leg work early on in your research, and as you work your way through the dissertation are many:

1) You will be completing work for your literature review

Simply take your summary of your mini-review, the final step I mentioned above under “What is a Mini-Review” and you’ve got a pretty good entry to fit somewhere in your literature review.

2) Create expanded bibliographies to provide to your supervisor

Prior to my meetings with my supervisor I would often create a YTD summary of my readings for the time period between our chats.  This document often served as a springboard to many of our discussions and it gave my supervisor a quick glance into the scholarship related to my topic.

3) When you sit down to write you will have a wealth of material to draw upon

It is one thing to draw upon someone else’s book review to try to fill in some gaps in your dissertation.  It is quite another to have a 1-2 page summary of a work that you have labored to create.

Not only is your knowledge of an author’s work personal and deep, which allows you to have meaningful interactions, but also, your ability to draw connections (both to your thesis and to other related works) is greatly enhanced after completing a mini-review.

4) Your mini-reviews are a great resource for new insights or memory refreshers

Reading your own mini-review is like reading the most salient set of cliff notes on a particular work.  If it’s been a while since you’ve picked up a particular work, your mini-review will bring it all to mind.

In addition, reading my mini-reviews has sometimes sparked new ideas and fresh insights for my dissertation if only because some time may have elapsed since the original reading / creation of the book / mini-review.

In the interim, my knowledge and maturity about my topic may have shifted, allowing a fresh re-reading of my mini-review.

5) Writing a mini-review gets you into the groove of writing

If there is one regret I’ve had as I’ve worked on my dissertation it’s been that I’ve done too much research (note-taking) and not enough writing.

While gathering and collating sources is important, the key to a dissertation is output, and the only way of getting output is to slog your way through it.

Mini-reviews get you in the PhD mode.  They get you thinking like someone in the academy.

How do you say something concisely, how do you accurately reflect others’ views, what is important and what is not, is this a good argument or not, etc.

A Sample Mini-Review

Click on the link below to see a sample mini-review I created for an article on the Miletus Speech

Lambrecht: Paul’s Farewell Address

While the creation of mini-reviews may take some time, there is often no substitute for an honest wrestling with a particular author’s work.

Endeavoring in such labor, however, pays off rich dividends in your personal knowledge and in the wealth of source material that will be available for different parts of your dissertation.

Happy researching!

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Mini-review

Mini-reviews provide a concise summary of a specific research topic or field relevant to Bioelectronic Medicine . They put previous research and findings in context and present current developments in a critical and focused manner.  Key aims of mini-reviews are to provide coverage of mature or emerging subjects, evaluations of progress in specified areas, and/or critical assessments of new technologies. Mini-reviews should be balanced and an excessive focus on the authors’ own work should be avoided. Mini-reviews should be no longer than 3,000 words, contain no more than two figures or tables, and contain about 60 references. The mini-review abstract should not exceed 200 words. Bioelectronic Medicine strongly encourages that all datasets on which the conclusions of the paper rely should be available to readers. We encourage authors to ensure that their datasets are either deposited in publicly available repositories (where available and appropriate) or presented in the main manuscript or additional supporting files whenever possible. Please see Springer Nature’s information on recommended repositories . Where a widely established research community expectation for data archiving in public repositories exists, submission to a community-endorsed, public repository is mandatory. A list of data where deposition is required, with the appropriate repositories, can be found on the Editorial Policies Page .

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Please note: we ask that you review the sections on this entire page before submitting your work, as omission of any necessary content will delay the processing of your manuscripts. Some information which is often forgotten includes (but is not limited to) the following, but please go through the entire page to make sure you include all necessary sections/information:

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The Abstract should not exceed 200 words and should be structured with a background, main body of the abstract and short conclusion. Please minimize the use of abbreviations and do not cite references in the abstract.

Three to ten keywords representing the main content of the article.

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This should contain the body of the article, and may also be broken into subsections with short, informative headings.

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Hao Z, AghaKouchak A, Nakhjiri N, Farahmand A. Global integrated drought monitoring and prediction system (GIDMaPS) data sets. figshare. 2014. http://dx.doi.org/10.6084/m9.figshare.853801

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The datasets generated during and/or analysed during the current study are available in the [NAME] repository, [PERSISTENT WEB LINK TO DATASETS]. [Reference number]

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Group authorship (for manuscripts involving a collaboration group): if you would like the names of the individual members of a collaboration group to be searchable through their individual PubMed records, please ensure that the title of the collaboration group is included on the title page and in the submission system and also include collaborating author names as the last paragraph of the “Acknowledgements” section. Please add authors in the format First Name, Middle initial(s) (optional), Last Name. You can add institution or country information for each author if you wish, but this should be consistent across all authors.

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Authors' information

This section is optional.

You may choose to use this section to include any relevant information about the author(s) that may aid the reader's interpretation of the article, and understand the standpoint of the author(s). This may include details about the authors' qualifications, current positions they hold at institutions or societies, or any other relevant background information. Please refer to authors using their initials. Note this section should not be used to describe any competing interests.

Endnotes should be designated within the text using a superscript lowercase letter and all notes (along with their corresponding letter) should be included in the Endnotes section. Please format this section in a paragraph rather than a list.

Examples of the BioMed Central reference style are shown below. Please note- Mini-reviews should contain about 60 references.

See our editorial policies for author guidance on good citation practice.

Web links and URLs: All web links and URLs, including links to the authors' own websites, should be given a reference number and included in the reference list rather than within the text of the manuscript. They should be provided in full, including both the title of the site and the URL, as well as the date the site was accessed, in the following format: The Mouse Tumor Biology Database. http://tumor.informatics.jax.org/mtbwi/index.do. Accessed 20 May 2013. If an author or group of authors can clearly be associated with a web link (e.g. for blogs) they should be included in the reference.

Example reference style:

Article within a journal Smith JJ. The world of science. Am J Sci. 1999;36:234-5.

Article within a journal (no page numbers) Rohrmann S, Overvad K, Bueno-de-Mesquita HB, Jakobsen MU, Egeberg R, Tjønneland A, et al. Meat consumption and mortality - results from the European Prospective Investigation into Cancer and Nutrition. BMC Med. 2013;11:63.

Article within a journal by DOI Slifka MK, Whitton JL. Clinical implications of dysregulated cytokine production. Dig J Mol Med. 2000; doi:10.1007/s801090000086.

Article within a journal supplement Frumin AM, Nussbaum J, Esposito M. Functional asplenia: demonstration of splenic activity by bone marrow scan. Blood 1979;59 Suppl 1:26-32.

Book chapter, or an article within a book Wyllie AH, Kerr JFR, Currie AR. Cell death: the significance of apoptosis. In: Bourne GH, Danielli JF, Jeon KW, editors. International review of cytology. London: Academic; 1980. p. 251-306.

OnlineFirst chapter in a series (without a volume designation but with a DOI) Saito Y, Hyuga H. Rate equation approaches to amplification of enantiomeric excess and chiral symmetry breaking. Top Curr Chem. 2007. doi:10.1007/128_2006_108.

Complete book, authored Blenkinsopp A, Paxton P. Symptoms in the pharmacy: a guide to the management of common illness. 3rd ed. Oxford: Blackwell Science; 1998.

Online document Doe J. Title of subordinate document. In: The dictionary of substances and their effects. Royal Society of Chemistry. 1999. http://www.rsc.org/dose/title of subordinate document. Accessed 15 Jan 1999.

Online database Healthwise Knowledgebase. US Pharmacopeia, Rockville. 1998. http://www.healthwise.org. Accessed 21 Sept 1998.

Supplementary material/private homepage Doe J. Title of supplementary material. 2000. http://www.privatehomepage.com. Accessed 22 Feb 2000.

University site Doe, J: Title of preprint. http://www.uni-heidelberg.de/mydata.html (1999). Accessed 25 Dec 1999.

FTP site Doe, J: Trivial HTTP, RFC2169. ftp://ftp.isi.edu/in-notes/rfc2169.txt (1999). Accessed 12 Nov 1999.

Organization site ISSN International Centre: The ISSN register. http://www.issn.org (2006). Accessed 20 Feb 2007.

Dataset with persistent identifier Zheng L-Y, Guo X-S, He B, Sun L-J, Peng Y, Dong S-S, et al. Genome data from sweet and grain sorghum (Sorghum bicolor). GigaScience Database. 2011. http://dx.doi.org/10.5524/100012.

See General formatting guidelines for information on how to format figures, tables and additional files.  Please note- Mini-reviews should contain no more than two figures or tables

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10 Tips: How to Write a Scientific Mini Review

10 Tips How to Write a Scientific Mini Review

1. Introduction

1  introduction

A scientific mini review is a concise summary of current research in a specific field. It provides an overview of the existing literature, identifies gaps in knowledge, and suggests future research directions. Writing a scientific mini review requires careful planning and organization to ensure clarity and coherence. Here are 10 tips to help you write an effective scientific mini review.

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1.1 What is a scientific mini review?

A scientific mini review is a condensed version of a full- length review article . It focuses on a specific topic and provides a concise summary of the most important findings in the field. Unlike a full-length review, a mini review is typically shorter in length and covers a narrower scope of research.

2. Choose a specific topic

2  choose a specific topic

When writing a scientific mini review, it is important to choose a specific topic that is well-defined and focused. This will help you narrow down the scope of your review and ensure that you cover the most relevant research in the field. Avoid broad topics that are too general or have been extensively covered in previous reviews.

2.1 Selecting a research question

Once you have chosen a specific topic, you need to formulate a research question that will guide your review. The research question should be clear, concise, and specific. It should address a gap in knowledge or a problem that needs to be solved in the field.

3. Conduct a comprehensive literature search

3  conduct a comprehensive literature search

To write a scientific mini review, you need to conduct a thorough literature search to identify relevant research articles . Start by searching electronic databases, such as PubMed or Google Scholar, using keywords related to your topic. Review the abstracts and full-text articles to determine their relevance to your research question.

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3.1 Using advanced search techniques

When conducting a literature search, it is important to use advanced search techniques to refine your results. These techniques include using Boolean operators (AND, OR, NOT), truncation, and proximity operators. By using these techniques, you can narrow down your search and find the most relevant articles.

4. Organize your review

4  organize your review

Before you start writing your scientific mini review, it is important to organize your thoughts and ideas. Create an outline that includes the main sections of your review, such as the introduction, methods, results, discussion, and conclusion. This will help you structure your review and ensure that you cover all the necessary information.

4.1 Structuring your review

When structuring your scientific mini review, it is important to follow a logical flow of information. Start with an introduction that provides background information on the topic and states the research question. Then, present the main findings of the studies you reviewed, followed by a discussion of the implications and limitations of the research. Finally, conclude your review by summarizing the key findings and suggesting future research directions.

5. Summarize the main findings

5  summarize the main findings

In a scientific mini review, it is important to summarize the main findings of the studies you reviewed. This can be done by highlighting the key results and conclusions of each study. Use clear and concise language to convey the main points and avoid unnecessary jargon or technical terms.

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5.1 Using tables and figures

To enhance the readability of your scientific mini review, consider using tables and figures to summarize the main findings. Tables can be used to present numerical data, while figures can be used to illustrate trends or patterns in the data. Make sure to provide clear and informative captions for each table or figure.

6. Discuss the implications and limitations

6  discuss the implications and limitations

In addition to summarizing the main findings, it is important to discuss the implications and limitations of the research you reviewed. This can include discussing the practical applications of the findings, as well as any potential biases or limitations in the studies. Be objective and provide a balanced assessment of the research.

6.1 Addressing potential biases

When discussing the limitations of the research, it is important to address any potential biases that may have influenced the results. This can include biases in the study design, sample selection, or data analysis . By acknowledging these biases, you can provide a more accurate and objective assessment of the research.

7. Use clear and concise language

7  use clear and concise language

When writing a scientific mini review, it is important to use clear and concise language to convey your ideas. Avoid using unnecessary jargon or technical terms that may confuse the reader. Instead, use simple and straightforward language that is easy to understand.

7.1 Writing in the active voice

To enhance the clarity of your scientific mini review, it is recommended to write in the active voice. This means using active verbs to describe the actions or findings of the research. For example, instead of saying "The data were analyzed," you can say "We analyzed the data."

8. Cite your sources properly

8  cite your sources properly

When writing a scientific mini review, it is important to cite your sources properly to give credit to the original authors and avoid plagiarism. Use a consistent citation style , such as APA or MLA, and include a reference list at the end of your review. Make sure to cite all the sources you used in your review.

8.1 Avoiding plagiarism

To avoid plagiarism, it is important to properly paraphrase and cite the ideas and findings of other researchers. When paraphrasing, make sure to rephrase the information in your own words and provide a citation to the original source. This will help you avoid unintentional plagiarism and maintain the integrity of your review.

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9. Revise and edit your review

9  revise and edit your review

Once you have completed your scientific mini review, it is important to revise and edit your work to ensure clarity and coherence. Read through your review carefully and make sure that each sentence is clear and concise. Check for grammatical errors , spelling mistakes, and punctuation errors. Make sure that your review flows smoothly and is easy to read.

9.1 Seeking feedback

Before submitting your scientific mini review, it is recommended to seek feedback from colleagues or mentors. They can provide valuable insights and suggestions for improving your review. Consider their feedback and make any necessary revisions to enhance the quality of your review.

Writing a scientific mini review requires careful planning, organization, and attention to detail . By following these 10 tips, you can write an effective and informative mini review that contributes to the existing body of knowledge in your field. Remember to choose a specific topic, conduct a comprehensive literature search, organize your review, summarize the main findings, discuss the implications and limitations, use clear and concise language, cite your sources properly, and revise and edit your review. With these tips in mind, you can write a scientific mini review that is clear, concise, and impactful.

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What is a scientific mini review?

A scientific mini review is a concise summary of a specific topic in the scientific field. It provides an overview of the current knowledge, recent advancements, and future directions in a condensed format.

How to structure a scientific mini review?

A scientific mini review typically follows a structured format, including an introduction, methods, results, discussion, and conclusion. It is important to provide a clear and logical flow of information, supported by relevant references.

What are the key elements of a scientific mini review?

The key elements of a scientific mini review include a clear and focused research question, a comprehensive literature review, critical analysis of the findings, and a concise conclusion summarizing the main points and potential implications.

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  • v.5(2); 2014 Jun

Introduction to Mini-Review

John c. elfar.

Associate Editor

It is my distinct pleasure to announce the beginning of a mini-review section of the Journal of Geriatric Orthopaedics and Rehabilitation . Under the careful and expert leadership of our editor, Stephen Kates, we have been able to expand the journal to include this very necessary contribution to the literature. In this ever-expanding age of electronic access and immediate dissemination of information, often the topics most basic to our field lack adequate review in a short format. In this ever-expanding age of electronic access and information sharing, often the topics most basic to our field lack adequate review. Mini-reviews summarize the most salient concepts related to a topic while reporting the most relevant and current findings. Their short format allows easy digestion of those topics in the literature so that more practitioners can benefit from them.

In the field of geriatric orthopedics and rehabilitation, the need is ever greater for the mini-review format, as it allows for expansion of our literature to include topics that specifically deal with geriatric orthopedics and rehabilitation. We are planning topics spanning from geriatric trauma to spinal degenerative and traumatic conditions as well as topics discussing research methodology and bias.

We hope to allow this section of our journal to rise to the level of importance and contribution established by the other sections, and we encourage your feedback to help us refine our contributions to this end. We also invite contributions along the lines of the instructions for authors to the journal review section, and we thank you for your continued readership and support.

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Mini-Reviews

Mini-reviews are summaries of recent insights or advances in specific research areas within the scope of AMB Express . A key aim of mini-reviews is to evaluate recent progress in a specific field, put research findings published in the preceding years into context and explain future directions for research as appropriate.

The journal is interested in publishing excellent Mini-Reviews. These reviews must be short and concise, timely, critical and in-depth, address novel aspects or concepts and must be attractive for readers.

If you are intending to submit a Mini-Review and publish it in this journal, please answer the following questions and provide the following information. This inquiry letter must be sent to the Editor-in-Chief, Dr. Alexander Steinbüchel, by e-mail ( [email protected] ).

This request is mandatory; only if the questions are answered completely, the proposal will be considered.

(1) The title of the proposed Mini-Review (must be short and concise; it must not contain more than 80 characters)

(2) An abstract of the proposed Mini-Review (It must contain no more than 200 words).

(3) Your CV with a publication list, in which original   publications that are related to the topic of the proposed Mini-Review, are marked.

It is a strict policy of the journal to consider Mini-Reviews only from authors who have in the past successfully studied the subject of the Mini-Review and who can document this by at least a few original publications.

Literature surveys of advanced students are generally only considered if they have already gained experience and published original papers.

(4) How is the content of the proposed Mini-Review distinguished from previously published Mini-Reviews on various aspects of this topic? Explain the distance of your manuscript to two or three related review articles (please prove reference).

Re-publications of old contents, aspects and concepts are not considered.

(5) Regarding novelty : Please outline the novel aspect of the proposed Mini-Review. Why should a scientist read this Mini-Review? Why is it needed? What is novel?

(6) At least 50% of the cited literature should be not older than 5 years. Can you ensure this?

(7) The references must be balanced according to the geographic regions from which they were published. Relevant literature must be cited. Can you ensure this?

(8) When do you plan to submit the manuscript?

Preparing your manuscript

The title page should:

  • "A versus B in the treatment of C: a randomized controlled trial", "X is a risk factor for Y: a case control study", "What is the impact of factor X on subject Y: A systematic review"
  • or for non-clinical or non-research studies: a description of what the article reports
  • list the full names and institutional addresses for all authors
  • if a collaboration group should be listed as an author, please list the group name as an author. If you would like the names of the individual members of the group to be searchable through their individual PubMed records, please include this information in the “Acknowledgements” section in accordance with the instructions below
  • indicate the corresponding author

This should contain the body of the article, and may also be broken into subsections with short, informative headings.

List of abbreviations

If abbreviations are used in the text they should be defined in the text at first use, and a list of abbreviations should be provided.

Declarations

All manuscripts must contain the following sections under the heading 'Declarations':

Ethics approval and consent to participate

Consent for publication, competing interests, authors' contributions, acknowledgements.

  • Authors' information (optional)

Please see below for details on the information to be included in these sections.

If any of the sections are not relevant to your manuscript, please include the heading and write 'Not applicable' for that section.

Manuscripts reporting studies involving human participants, human data or human tissue must:

  • include a statement on ethics approval and consent (even where the need for approval was waived)
  • include the name of the ethics committee that approved the study and the committee’s reference number if appropriate

Studies involving animals must include a statement on ethics approval.

See our  editorial policies  for more information.

If your manuscript does not report on or involve the use of any animal or human data or tissue, please state “Not applicable” in this section.

If your manuscript contains any individual person’s data in any form (including individual details, images or videos), consent to publish must be obtained from that person, or in the case of children, their parent or legal guardian. All presentations of case reports must have consent to publish.

You can use your institutional consent form if you prefer. You should not send the form to us on submission, but we may request to see a copy at any stage (including after publication).

See our  editorial policies  for more information on consent for publication.

If your manuscript does not contain data from any individual person, please state “Not applicable” in this section.

All financial and non-financial competing interests must be declared in this section.

See our  editorial policies  for a full explanation of competing interests. If you are unsure whether you or any of your co-authors have a competing interest please contact the editorial office.

Please use the authors’ initials to refer to each authors' competing interests in this section.

If you do not have any competing interests, please state "The authors declare that they have no competing interests" in this section.

All sources of funding for the research reported should be declared. The role of the funding body in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript should be declared.

The individual contributions of authors to the manuscript should be specified in this section. Guidance and criteria for authorship can be found in our  editorial policies .

Please use initials to refer to each author's contribution in this section, for example: "FC analyzed and interpreted the patient data regarding the hematological disease and the transplant. RH performed the histological examination of the kidney, and was a major contributor in writing the manuscript. All authors read and approved the final manuscript."

Please acknowledge anyone who contributed towards the article who does not meet the criteria for authorship including anyone who provided professional writing services or materials.

Authors should obtain permission to acknowledge from all those mentioned in the Acknowledgements section.

See our  editorial policies  for a full explanation of acknowledgements and authorship criteria.

If you do not have anyone to acknowledge, please write "Not applicable" in this section.

Group authorship (for manuscripts involving a collaboration group): if you would like the names of the individual members of a collaboration Group to be searchable through their individual PubMed records, please ensure that the title of the collaboration Group is included on the title page and in the submission system and also include collaborating author names as the last paragraph of the “Acknowledgements” section. Please add authors in the format First Name, Middle initial(s) (optional), Last Name. You can add institution or country information for each author if you wish, but this should be consistent across all authors.

Please note that individual names may not be present in the PubMed record at the time a published article is initially included in PubMed as it takes PubMed additional time to code this information.

Authors' information

This section is optional.

You may choose to use this section to include any relevant information about the author(s) that may aid the reader's interpretation of the article, and understand the standpoint of the author(s). This may include details about the authors' qualifications, current positions they hold at institutions or societies, or any other relevant background information. Please refer to authors using their initials. Note this section should not be used to describe any competing interests.

Footnotes should be designated within the text using a superscript number. It is not allowed to use footnotes for references/citations.

Examples of the Basic Springer reference style are shown below. 

See our editorial policies for author guidance on good citation practice.

Web links and URLs: All web links and URLs, including links to the authors' own websites, should be given a reference number and included in the reference list rather than within the text of the manuscript. They should be provided in full, including both the title of the site and the URL, as well as the date the site was accessed, in the following format: The Mouse Tumor Biology Database. http://tumor.informatics.jax.org/mtbwi/index.do . Accessed 20 May 2013. If an author or group of authors can clearly be associated with a web link, such as for weblogs, then they should be included in the reference.

Example reference style:

Article within a journal

Smith J, Jones M Jr, Houghton L (1999) Future of health insurance. N Engl J Med 965:325-329.

Article by DOI (with page numbers)

Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. J Mol Med 78:74-80. doi:10.1007/s001090000086.

Article by DOI (before issue publication and with page numbers)

Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. J Mol Med. doi:10.1007/s001090000086.

Article in electronic journal by DOI (no paginated version)

Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. Dig J Mol Med. doi:10.1007/s801090000086.

Journal issue with issue editor

Smith J (ed) (1998) Rodent genes. Mod Genomics J 14(6):126-233.

Journal issue with no issue editor

Mod Genomics J (1998) Rodent genes. Mod Genomics J 14(6):126-233.

Book chapter, or an article within a book

Brown B, Aaron M (2001) The politics of nature. In: Smith J (ed) The rise of modern genomics, 3rd edn. Wiley, New York.

Complete book, authored

South J, Blass B (2001) The future of modern genomics. Blackwell, London.

Complete book, edited

Smith J, Brown B (eds) (2001) The demise of modern genomics. Blackwell, London.

Complete book, also showing a translated edition [Either edition may be listed first.]

Adorno TW (1966) Negative Dialektik. Suhrkamp, Frankfurt. English edition: Adorno TW (1973) Negative Dialectics (trans: Ashton EB). Routledge, London.

Chapter in a book in a series without volume titles

Schmidt H (1989) Testing results. In: Hutzinger O (ed) Handbook of environmental chemistry, vol 2E. Springer, Heidelberg, p 111.

Chapter in a book in a series with volume titles

Smith SE (1976) Neuromuscular blocking drugs in man. In: Zaimis E (ed) Neuromuscular junction. Handbook of experimental pharmacology, vol 42. Springer, Heidelberg, pp 593-660.

OnlineFirst chapter in a series (without a volume designation but with a DOI)

Saito, Yukio, and Hyuga, Hiroyuki. (2007) Rate equation approaches to amplification of enantiomeric excess and chiral symmetry breaking. Topics in Current Chemistry. doi:10.1007/128_2006_108.

Proceedings as a book (in a series and subseries)

Zowghi D (1996) A framework for reasoning about requirements in evolution. In: Foo N, Goebel R (eds) PRICAI'96: topics in artificial intelligence. 4th Pacific Rim conference on artificial intelligence, Cairns, August 1996. Lecture notes in computer science (Lecture notes in artificial intelligence), vol 1114. Springer, Heidelberg, p 157.

Article within conference proceedings with an editor (without a publisher)

Aaron M (1999) The future of genomics. In: Williams H (ed) Proceedings of the genomic researchers, Boston, 1999.

Article within conference proceedings without an editor (without a publisher)

Chung S-T, Morris RL (1978) Isolation and characterization of plasmid deoxyribonucleic acid from Streptomyces fradiae. In: Abstracts of the 3rd international symposium on the genetics of industrial microorganisms, University of Wisconsin, Madison, 4-9 June 1978.

Article presented at a conference

Chung S-T, Morris RL (1978) Isolation and characterization of plasmid deoxyribonucleic acid from Streptomyces fradiae. Paper presented at the 3rd international symposium on the genetics of industrial microorganisms, University of Wisconsin, Madison, 4-9 June 1978.

Norman LO (1998) Lightning rods. US Patent 4,379,752, 9 Sept 1998.

Dissertation

Trent JW (1975) Experimental acute renal failure. Dissertation, University of California.

Book with institutional author

International Anatomical Nomenclature Committee (1966) Nomina anatomica. Excerpta Medica, Amsterdam.

In press article

Major M (2007) Recent developments. In: Jones W (ed) Surgery today. Springer, Dordrecht (in press).  

Online document

Doe J (1999) Title of subordinate document. In: The dictionary of substances and their effects. Royal Society of Chemistry. Available via DIALOG. http://www.rsc.org/dose/title of subordinate document. Accessed 15 Jan 1999.

Online database

Healthwise Knowledgebase (1998) US Pharmacopeia, Rockville. http://www.healthwise.org. Accessed 21 Sept 1998.

Supplementary material/private homepage

Doe J (2000) Title of supplementary material. http://www.privatehomepage.com. Accessed 22 Feb 2000.

University site

Doe J (1999) Title of preprint. http://www.uni-heidelberg.de/mydata.html. Accessed 25 Dec 1999.

Doe J (1999) Trivial HTTP, RFC2169. ftp://ftp.isi.edu/in-notes/rfc2169.txt. Accessed 12 Nov 1999.

Organization site

ISSN International Centre (2006) The ISSN register. http://www.issn.org. Accessed 20 Feb 2007.

General formatting information

Manuscripts must be written in concise English. For help on scientific writing, or preparing your manuscript in English, please see Springer's  Author Academy .

Quick points:

  • Use double line spacing
  • Include line and page numbering
  • Use SI units: Please ensure that all special characters used are embedded in the text, otherwise they will be lost during conversion to PDF
  • Do not use page breaks in your manuscript

File formats

The following word processor file formats are acceptable for the main manuscript document:

  • Microsoft word (DOC, DOCX)
  • Rich text format (RTF)
  • TeX/LaTeX (use either BioMed Central's TeX template)

Please note: editable files are required for processing in production. If your manuscript contains any non-editable files (such as PDFs) you will be required to re-submit an editable file if your manuscript is accepted.

For more information, see ' Preparing figures ' below.

Additional information for TeX/LaTeX users

Please use either BioMed Central's TeX template and BibTeX stylefile if you use TeX format. Submit your references using either a bib or bbl file. When submitting TeX submissions, please submit both your TeX file and your bib/bbl file as manuscript files. Please also convert your TeX file into a PDF (please do not use a DIV file) and submit this PDF as a supplementary file with the name 'Reference PDF'. This PDF will be used by our production team as a reference point to check the layout of the article as the author intended. Please also note that all figures must be coded at the end of the TeX file and not inline. 

The Editorial Manager system checks for any errors in the Tex files. If an error is present then the system PDF will display LaTex code and highlight and explain the error in a section beginning with an exclamation mark (!).

All relevant editable source files must be uploaded during the submission process. Failing to submit these source files will cause unnecessary delays in the production process.

TeX templates:

  • BioMedCentral_article (ZIP format) - preferred template
  • article (part of the standard TeX distribution )
  • amsart (part of the standard TeX distribution )

Style and language

For editors and reviewers to accurately assess the work presented in your manuscript you need to ensure the English language is of sufficient quality to be understood. If you need help with writing in English you should consider:

  • Visiting the English language tutorial which covers the common mistakes when writing in English.
  • Asking a colleague who is a native English speaker to review your manuscript for clarity.
  • Using a professional language editing service where editors will improve the English to ensure that your meaning is clear and identify problems that require your review. Two such services are provided by our affiliates Nature Research Editing Service and American Journal Experts . SpringerOpen authors are entitled to a 10% discount on their first submission to either of these services. To claim 10% off English editing from Nature Research Editing Service, click here . To claim 10% off American Journal Experts, click here .

Please note that the use of a language editing service is not a requirement for publication in AMB Express and does not imply or guarantee that the article will be selected for peer review or accepted.  为便于编辑和评审专家准确评估您稿件中陈述的研究工作,您需要确保文稿英语语言质量足以令人理解。如果您需要英文写作方面的帮助,您可以考虑:

  • 查看一些有关英语写作中常见语言错误的 教程 。
  • 请一位以英语为母语的同事审阅您的稿件是否表意清晰。
  • 使用专业语言编辑服务,编辑人员会对英语进行润色,以确保您的意思表达清晰,并提出需要您复核的问题。例如我们的附属机构 Nature Research Editing Service 以及合作伙伴 American Journal Experts 都可以提供此类专业服务。SpringerOpen作者享受首次订单10%优惠,该优惠同时适用于两家公司。您只需点击以下链接即可开始。使用 Nature Research Editing Service的编辑润色10%的优惠服务,请点击 这里 。使用 American Journal Experts的10%优惠服务,请点击 这里 。

请注意,使用语言编辑服务并非在期刊上发表文章的必要条件,这也并不意味或保证文章将被选中进行同行评议或被接受。 エディターと査読者があなたの論文を正しく評価するには、使用されている英語の質が十分であることが必要とされます。英語での論文執筆に際してサポートが必要な場合には、次のオプションがあります:

  • 英語で執筆する際のよくある間違いに関する 英語のチュートリアル を参照する。
  • 英語を母国語とする同僚に、原稿内の英語が明確であるかをチェックしてもらう。
  • プロの英文校正サービスを利用する。校正者が原稿の意味を明確にしたり、問題点を指摘し、英語を向上させます。 Nature Research Editing Service と American Journal Experts の2つは弊社と提携しているサービスです。SpringerOpenのジャーナルの著者は、いずれかのサービスを初めて利用する際に、10%の割引を受けることができます。Nature Research Editing Serviceの10%割引を受けるには、 こちらをクリックしてください 。. American Journal Expertsの10%割引を受けるには、 こちらをクリックしてください 。

英文校正サービスの利用は、このジャーナルに掲載されるための条件ではないこと、また論文審査や受理を保証するものではないことに留意してください。 영어 원고의 경우, 에디터 및 리뷰어들이 귀하의 원고에 실린 결과물을 정확하게 평가할 수 있도록, 그들이 충분히 이해할 수 있을 만한 수준으로 작성되어야 합니다. 만약 영작문과 관련하여 도움을 받기를 원하신다면 다음의 사항들을 고려하여 주십시오:

  • 영어 튜토리얼 페이지 에 방문하여 영어로 글을 쓸 때 자주하는 실수들을 확인합니다.
  • 귀하의 원고의 표현을 명확히 해줄 영어 원어민 동료를 찾아서 리뷰를 의뢰합니다
  • 리뷰에 대비하여, 원고의 의미를 명확하게 해주고 리뷰에서 요구하는 문제점들을 식별해서 영문 수준을 향상시켜주는 전문 영문 교정 서비스를 이용합니다. Nature Research Editing Service 와 American Journal Experts 에서 저희와 협약을 통해 서비스를 제공하고 있습니다. SpringerOpen에서는 위의 두 가지의 서비스를 첫 논문 투고를 위해 사용하시는 경우, 10%의 할인을 제공하고 있습니다. Nature Research Editing Service이용시 10% 할인을 요청하기 위해서는 여기 를 클릭해 주시고, American Journal Experts 이용시 10% 할인을 요청하기 위해서는 여기 를 클릭해 주십시오.

영문 교정 서비스는 게재를 위한 요구사항은 아니며, 해당 서비스의 이용이 피어 리뷰에 논문이 선택되거나 게재가 수락되는 것을 의미하거나 보장하지 않습니다.

What should be cited?

Only articles, clinical trial registration records and abstracts that have been published or are in press, or are available through public e-print/preprint servers, may be cited.

Unpublished abstracts, unpublished data and personal communications should not be included in the reference list, but may be included in the text and referred to as "unpublished observations" or "personal communications" giving the names of the involved researchers. Obtaining permission to quote personal communications and unpublished data from the cited colleagues is the responsibility of the author. Either footnotes or endnotes are permitted. Journal abbreviations follow Index Medicus/MEDLINE.

Any in press articles cited within the references and necessary for the reviewers' assessment of the manuscript should be made available if requested by the editorial office.

Preparing figures

When preparing figures, please follow the formatting instructions below.

  • Figure titles (max 15 words) and legends (max 300 words) should be provided in the main manuscript, not in the graphic file.
  • Tables should NOT be submitted as figures but should be included in the main manuscript file.
  • Multi-panel figures (those with parts a, b, c, d etc.) should be submitted as a single composite file that contains all parts of the figure.
  • Figures should be numbered in the order they are first mentioned in the text, and uploaded in this order.
  • Figures should be uploaded in the correct orientation.
  • Figure keys should be incorporated into the graphic, not into the legend of the figure.
  • Each figure should be closely cropped to minimize the amount of white space surrounding the illustration. Cropping figures improves accuracy when placing the figure in combination with other elements when the accepted manuscript is prepared for publication on our site. For more information on individual figure file formats, see our detailed instructions.
  • Individual figure files should not exceed 10 MB. If a suitable format is chosen, this file size is adequate for extremely high quality figures.
  • Please note that it is the responsibility of the author(s) to obtain permission from the copyright holder to reproduce figures (or tables) that have previously been published elsewhere. In order for all figures to be open access, authors must have permission from the rights holder if they wish to include images that have been published elsewhere in non open access journals. Permission should be indicated in the figure legend, and the original source included in the reference list.

Figure file types

We accept the following file formats for figures:

  • EPS (suitable for diagrams and/or images)
  • PDF (suitable for diagrams and/or images)
  • Microsoft Word (suitable for diagrams and/or images, figures must be a single page)
  • PowerPoint (suitable for diagrams and/or images, figures must be a single page)
  • TIFF (suitable for images)
  • JPEG (suitable for photographic images, less suitable for graphical images)
  • PNG (suitable for images)
  • BMP (suitable for images)
  • CDX (ChemDraw - suitable for molecular structures)

Figure size and resolution

Figures are resized during publication of the final full text and PDF versions to conform to the SpringerOpen standard dimensions, which are detailed below.

Figures on the web:

  • width of 600 pixels (standard), 1200 pixels (high resolution).

Figures in the final PDF version:

  • width of 85 mm for half page width figure
  • width of 170 mm for full page width figure
  • maximum height of 225 mm for figure and legend
  • image resolution of approximately 300 dpi (dots per inch) at the final size

Figures should be designed such that all information, including text, is legible at these dimensions. All lines should be wider than 0.25 pt when constrained to standard figure widths. All fonts must be embedded.

Figure file compression

Vector figures should if possible be submitted as PDF files, which are usually more compact than EPS files.

  • TIFF files should be saved with LZW compression, which is lossless (decreases file size without decreasing quality) in order to minimize upload time.
  • JPEG files should be saved at maximum quality.
  • Conversion of images between file types (especially lossy formats such as JPEG) should be kept to a minimum to avoid degradation of quality.

If you have any questions or are experiencing a problem with figures, please contact the customer service team at [email protected] .

Preparing tables

When preparing tables, please follow the formatting instructions below.

  • Tables should be numbered and cited in the text in sequence using Arabic numerals (i.e. Table 1, Table 2 etc.).
  • Tables less than one A4 or Letter page in length can be placed in the appropriate location within the manuscript.
  • Tables larger than one A4 or Letter page in length can be placed at the end of the document text file. Please cite and indicate where the table should appear at the relevant location in the text file so that the table can be added in the correct place during production.
  • Larger datasets, or tables too wide for A4 or Letter landscape page can be uploaded as additional files. Please see [below] for more information.
  • Tabular data provided as additional files can be uploaded as an Excel spreadsheet (.xls ) or comma separated values (.csv). Please use the standard file extensions.
  • Table titles (max 15 words) should be included above the table, and legends (max 300 words) should be included underneath the table.
  • Tables should not be embedded as figures or spreadsheet files, but should be formatted using ‘Table object’ function in your word processing program.
  • Color and shading may not be used. Parts of the table can be highlighted using superscript, numbering, lettering, symbols or bold text, the meaning of which should be explained in a table legend.
  • Commas should not be used to indicate numerical values.

If you have any questions or are experiencing a problem with tables, please contact the customer service team at [email protected] .

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AAPS Open Cover Image

Mini review

The Mini review article type denotes a review with a more concise format compared with a standard review article. 

Preparing your manuscript

The title page should:

  • present a title that includes, if appropriate, the research design or for non-research studies: a description of what the article reports
  • if a collaboration group should be listed as an author, please list the group name as an author  and include the names of the individual members of the group in the “Acknowledgements” section in accordance with the instructions below
  • indicate the corresponding author

The abstract should briefly summarize the aim, findings or purpose of the article. Please minimize the use of abbreviations and do not cite references in the abstract.

Beginning January 2022, we welcome submissions that include a graphical abstract (GA). This image should be a summary of the findings from the presented research allowing readers to quickly deduce the content in a visual format. The purpose is to highlight your work – draw the readers in quickly so they want to read more.

This graphical abstract figure (drawing, structure, or reaction scheme), preferably in color (free), will be used in the Table of Contents and in the abstract section on the title page of the article. Cover art is often chosen from graphical abstract figures.

For the GA, include a short title and description (about 50 words).The figure should be in one of the following file types: .tiff, .eps, .jpg, .bmp, .doc, or .pdf. It should be 8 cm (3.15 inches) wide x 4 cm (1.57 inches) high when printed at full scale (100%), and should have high quality image and text. Please insure that the illustration maintains this aspect ratio and is still informative upon reduction.

Please supply the GA figure at 100% using the following specifications/sizes:

  • 300 dpi – halftone
  • 600 dpi - with text
  • 600 dpi - combine halftone and text (embedded text)
  • 1200 dpi - bitmap (pure text and lines (b/w))
  • 300/600/1200 dpi - combine embedded images and vector objects
  • For "rastered" images (.pdf, .doc, .bmp, .jpg), the resolution should be at least 300 dpi.

​​​​​​​ Keywords

Three to ten keywords representing the main content of the article.

This should contain the body of the article, and may also be broken into subsections with short, informative headings.

List of abbreviations

If abbreviations are used in the text they should be defined in the text at first use, and a list of abbreviations should be provided.

Declarations

All manuscripts must contain the following sections under the heading 'Declarations':

Availability of data and materials

Competing interests, authors' contributions, acknowledgements.

  • Authors' information (optional)

Please see below for details on the information to be included in these sections.

If any of the sections are not relevant to your manuscript, please include the heading and write 'Not applicable' for that section.

All manuscripts must include an ‘Availability of data and materials’ statement. Data availability statements should include information on where data supporting the results reported in the article can be found including, where applicable, hyperlinks to publicly archived datasets analysed or generated during the study. By data we mean the minimal dataset that would be necessary to interpret, replicate and build upon the findings reported in the article. We recognise it is not always possible to share research data publicly, for instance when individual privacy could be compromised, and in such instances data availability should still be stated in the manuscript along with any conditions for access.

Data availability statements can take one of the following forms (or a combination of more than one if required for multiple datasets):

  • The datasets generated and/or analysed during the current study are available in the [NAME] repository, [PERSISTENT WEB LINK TO DATASETS]
  • The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.
  • All data generated or analysed during this study are included in this published article [and its supplementary information files].
  • The datasets generated and/or analysed during the current study are not publicly available due [REASON WHY DATA ARE NOT PUBLIC] but are available from the corresponding author on reasonable request.
  • Data sharing is not applicable to this article as no datasets were generated or analysed during the current study.
  • The data that support the findings of this study are available from [third party name] but restrictions apply to the availability of these data, which were used under license for the current study, and so are not publicly available. Data are however available from the authors upon reasonable request and with permission of [third party name].
  • Not applicable. If your manuscript does not contain any data, please state 'Not applicable' in this section.

More examples of template data availability statements, which include examples of openly available and restricted access datasets, are available  here .

SpringerOpen  also requires that authors cite any publicly available data on which the conclusions of the paper rely in the manuscript. Data citations should include a persistent identifier (such as a DOI) and should ideally be included in the reference list. Citations of datasets, when they appear in the reference list, should include the minimum information recommended by DataCite and follow journal style. Dataset identifiers including DOIs should be expressed as full URLs. For example:

Hao Z, AghaKouchak A, Nakhjiri N, Farahmand A. Global integrated drought monitoring and prediction system (GIDMaPS) data sets. figshare. 2014.  http://dx.doi.org/10.6084/m9.figshare.853801

With the corresponding text in the Availability of data and materials statement:

The datasets generated during and/or analysed during the current study are available in the [NAME] repository, [PERSISTENT WEB LINK TO DATASETS]. [Reference number]

If you wish to co-submit a data note describing your data to be published in BMC Research Notes , you can do so by visiting our submission portal . Data notes support open data and help authors to comply with funder policies on data sharing. Co-published data notes will be linked to the research article the data support ( example ).

All financial and non-financial competing interests must be declared in this section.

See our  editorial policies  for a full explanation of competing interests. If you are unsure whether you or any of your co-authors have a competing interest please contact the editorial office.

Please use the authors’ initials to refer to each authors' competing interests in this section.

If you do not have any competing interests, please state "The authors declare that they have no competing interests" in this section.

All sources of funding for the research reported should be declared. If the funder has a specific role in the conceptualization, design, data collection, analysis, decision to publish, or preparation of the manuscript, this should be declared.

The individual contributions of authors to the manuscript should be specified in this section. Guidance and criteria for authorship can be found in our  editorial policies .

Please use initials to refer to each author's contribution in this section, for example: "FC analyzed and interpreted the patient data regarding the hematological disease and the transplant. RH performed the histological examination of the kidney, and was a major contributor in writing the manuscript. All authors read and approved the final manuscript."

Please acknowledge anyone who contributed towards the article who does not meet the criteria for authorship including anyone who provided professional writing services or materials.

Authors should obtain permission to acknowledge from all those mentioned in the Acknowledgements section.

See our  editorial policies  for a full explanation of acknowledgements and authorship criteria.

If you do not have anyone to acknowledge, please write "Not applicable" in this section.

Group authorship (for manuscripts involving a collaboration group): if you would like the names of the individual members of a collaboration Group to be searchable through their individual PubMed records, please ensure that the title of the collaboration Group is included on the title page and in the submission system and also include collaborating author names as the last paragraph of the “Acknowledgements” section. Please add authors in the format First Name, Middle initial(s) (optional), Last Name. You can add institution or country information for each author if you wish, but this should be consistent across all authors.

Authors' information

This section is optional.

You may choose to use this section to include any relevant information about the author(s) that may aid the reader's interpretation of the article, and understand the standpoint of the author(s). This may include details about the authors' qualifications, current positions they hold at institutions or societies, or any other relevant background information. Please refer to authors using their initials. Note this section should not be used to describe any competing interests.

Footnotes should be designated within the text using a superscript number. It is not allowed to use footnotes for references/citations.

Examples of the Basic Springer reference style are shown below. 

See our editorial policies for author guidance on good citation practice.

Web links and URLs: All web links and URLs, including links to the authors' own websites, should be given a reference number and included in the reference list rather than within the text of the manuscript. They should be provided in full, including both the title of the site and the URL, as well as the date the site was accessed, in the following format: The Mouse Tumor Biology Database. http://tumor.informatics.jax.org/mtbwi/index.do . Accessed 20 May 2013. If an author or group of authors can clearly be associated with a web link, such as for weblogs, then they should be included in the reference.

Example reference style:

Article within a journal

Smith J, Jones M Jr, Houghton L (1999) Future of health insurance. N Engl J Med 965:325-329.

Article by DOI (with page numbers)

Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. J Mol Med 78:74-80. doi:10.1007/s001090000086.

Article by DOI (before issue publication and with page numbers)

Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. J Mol Med. doi:10.1007/s001090000086.

Article in electronic journal by DOI (no paginated version)

Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. Dig J Mol Med. doi:10.1007/s801090000086.

Journal issue with issue editor

Smith J (ed) (1998) Rodent genes. Mod Genomics J 14(6):126-233.

Journal issue with no issue editor

Mod Genomics J (1998) Rodent genes. Mod Genomics J 14(6):126-233.

Book chapter, or an article within a book

Brown B, Aaron M (2001) The politics of nature. In: Smith J (ed) The rise of modern genomics, 3rd edn. Wiley, New York.

Complete book, authored

South J, Blass B (2001) The future of modern genomics. Blackwell, London.

Complete book, edited

Smith J, Brown B (eds) (2001) The demise of modern genomics. Blackwell, London.

Complete book, also showing a translated edition [Either edition may be listed first.]

Adorno TW (1966) Negative Dialektik. Suhrkamp, Frankfurt. English edition: Adorno TW (1973) Negative Dialectics (trans: Ashton EB). Routledge, London.

Chapter in a book in a series without volume titles

Schmidt H (1989) Testing results. In: Hutzinger O (ed) Handbook of environmental chemistry, vol 2E. Springer, Heidelberg, p 111.

Chapter in a book in a series with volume titles

Smith SE (1976) Neuromuscular blocking drugs in man. In: Zaimis E (ed) Neuromuscular junction. Handbook of experimental pharmacology, vol 42. Springer, Heidelberg, pp 593-660.

OnlineFirst chapter in a series (without a volume designation but with a DOI)

Saito, Yukio, and Hyuga, Hiroyuki. (2007) Rate equation approaches to amplification of enantiomeric excess and chiral symmetry breaking. Topics in Current Chemistry. doi:10.1007/128_2006_108.

Proceedings as a book (in a series and subseries)

Zowghi D (1996) A framework for reasoning about requirements in evolution. In: Foo N, Goebel R (eds) PRICAI'96: topics in artificial intelligence. 4th Pacific Rim conference on artificial intelligence, Cairns, August 1996. Lecture notes in computer science (Lecture notes in artificial intelligence), vol 1114. Springer, Heidelberg, p 157.

Article within conference proceedings with an editor (without a publisher)

Aaron M (1999) The future of genomics. In: Williams H (ed) Proceedings of the genomic researchers, Boston, 1999.

Article within conference proceedings without an editor (without a publisher)

Chung S-T, Morris RL (1978) Isolation and characterization of plasmid deoxyribonucleic acid from Streptomyces fradiae. In: Abstracts of the 3rd international symposium on the genetics of industrial microorganisms, University of Wisconsin, Madison, 4-9 June 1978.

Article presented at a conference

Chung S-T, Morris RL (1978) Isolation and characterization of plasmid deoxyribonucleic acid from Streptomyces fradiae. Paper presented at the 3rd international symposium on the genetics of industrial microorganisms, University of Wisconsin, Madison, 4-9 June 1978.

Norman LO (1998) Lightning rods. US Patent 4,379,752, 9 Sept 1998.

Dissertation

Trent JW (1975) Experimental acute renal failure. Dissertation, University of California.

Book with institutional author

International Anatomical Nomenclature Committee (1966) Nomina anatomica. Excerpta Medica, Amsterdam.

In press article

Major M (2007) Recent developments. In: Jones W (ed) Surgery today. Springer, Dordrecht (in press).  

Online document

Doe J (1999) Title of subordinate document. In: The dictionary of substances and their effects. Royal Society of Chemistry. Available via DIALOG. http://www.rsc.org/dose/title of subordinate document. Accessed 15 Jan 1999.

Online database

Healthwise Knowledgebase (1998) US Pharmacopeia, Rockville. http://www.healthwise.org. Accessed 21 Sept 1998.

Supplementary material/private homepage

Doe J (2000) Title of supplementary material. http://www.privatehomepage.com. Accessed 22 Feb 2000.

University site

Doe J (1999) Title of preprint. http://www.uni-heidelberg.de/mydata.html. Accessed 25 Dec 1999.

Doe J (1999) Trivial HTTP, RFC2169. ftp://ftp.isi.edu/in-notes/rfc2169.txt. Accessed 12 Nov 1999.

Organization site

ISSN International Centre (2006) The ISSN register. http://www.issn.org. Accessed 20 Feb 2007.

General formatting information

Manuscripts must be written in concise English. For help on scientific writing, or preparing your manuscript in English, please see Springer's  Author Academy .

Quick points:

  • Use double line spacing
  • Include line and page numbering
  • Use SI units: Please ensure that all special characters used are embedded in the text, otherwise they will be lost during conversion to PDF
  • Do not use page breaks in your manuscript

File formats

The following word processor file formats are acceptable for the main manuscript document:

  • Microsoft word (DOC, DOCX)
  • Rich text format (RTF)
  • TeX/LaTeX 

Please note: editable files are required for processing in production. If your manuscript contains any non-editable files (such as PDFs) you will be required to re-submit an editable file if your manuscript is accepted.

For more information, see ' Preparing figures ' below.

Additional information for TeX/LaTeX users

You are encouraged to use the Springer Nature LaTeX template when preparing a submission. A PDF of your manuscript files will be compiled during submission using pdfLaTeX and TexLive 2021. All relevant editable source files must be uploaded during the submission process. Failing to submit these source files will cause unnecessary delays in the production process.  

Style and language

For editors and reviewers to accurately assess the work presented in your manuscript you need to ensure the English language is of sufficient quality to be understood. If you need help with writing in English you should consider:

  • Getting a fast, free online grammar check .
  • Visiting the English language tutorial which covers the common mistakes when writing in English.
  • Asking a colleague who is proficient in English to review your manuscript for clarity.
  • Using a professional language editing service where editors will improve the English to ensure that your meaning is clear and identify problems that require your review. Two such services are provided by our affiliates Nature Research Editing Service and American Journal Experts . SpringerOpen authors are entitled to a 10% discount on their first submission to either of these services. To claim 10% off English editing from Nature Research Editing Service, click here . To claim 10% off American Journal Experts, click here .

Please note that the use of a language editing service is not a requirement for publication in AAPS Open and does not imply or guarantee that the article will be selected for peer review or accepted.  为便于编辑和评审专家准确评估您稿件中陈述的研究工作,您需要确保文稿英语语言质量足以令人理解。如果您需要英文写作方面的帮助,您可以考虑:

  • 获取快速、免费的在线  语法检查 。
  • 查看一些有关英语写作中常见语言错误的 教程 。
  • 请一位以英语为母语的同事审阅您的稿件是否表意清晰。
  • 使用专业语言编辑服务,编辑人员会对英语进行润色,以确保您的意思表达清晰,并提出需要您复核的问题。例如我们的附属机构 Nature Research Editing Service 以及合作伙伴 American Journal Experts 都可以提供此类专业服务。SpringerOpen作者享受首次订单10%优惠,该优惠同时适用于两家公司。您只需点击以下链接即可开始。使用 Nature Research Editing Service的编辑润色10%的优惠服务,请点击 这里 。使用 American Journal Experts的10%优惠服务,请点击 这里 。

请注意,使用语言编辑服务并非在期刊上发表文章的必要条件,这也并不意味或保证文章将被选中进行同行评议或被接受。 エディターと査読者があなたの論文を正しく評価するには、使用されている英語の質が十分であることが必要とされます。英語での論文執筆に際してサポートが必要な場合には、次のオプションがあります:

  • 高速なオンライン  文法チェック  を無料で受ける。
  • 英語で執筆する際のよくある間違いに関する 英語のチュートリアル を参照する。
  • 英語を母国語とする同僚に、原稿内の英語が明確であるかをチェックしてもらう。
  • プロの英文校正サービスを利用する。校正者が原稿の意味を明確にしたり、問題点を指摘し、英語を向上させます。 Nature Research Editing Service と American Journal Experts の2つは弊社と提携しているサービスです。SpringerOpenのジャーナルの著者は、いずれかのサービスを初めて利用する際に、10%の割引を受けることができます。Nature Research Editing Serviceの10%割引を受けるには、 こちらをクリックしてください 。. American Journal Expertsの10%割引を受けるには、 こちらをクリックしてください 。

英文校正サービスの利用は、このジャーナルに掲載されるための条件ではないこと、また論文審査や受理を保証するものではないことに留意してください。 영어 원고의 경우, 에디터 및 리뷰어들이 귀하의 원고에 실린 결과물을 정확하게 평가할 수 있도록, 그들이 충분히 이해할 수 있을 만한 수준으로 작성되어야 합니다. 만약 영작문과 관련하여 도움을 받기를 원하신다면 다음의 사항들을 고려하여 주십시오:

  • 영어 튜토리얼 페이지 에 방문하여 영어로 글을 쓸 때 자주하는 실수들을 확인합니다.
  • 귀하의 원고의 표현을 명확히 해줄 영어 원어민 동료를 찾아서 리뷰를 의뢰합니다
  • 리뷰에 대비하여, 원고의 의미를 명확하게 해주고 리뷰에서 요구하는 문제점들을 식별해서 영문 수준을 향상시켜주는 전문 영문 교정 서비스를 이용합니다. Nature Research Editing Service 와 American Journal Experts 에서 저희와 협약을 통해 서비스를 제공하고 있습니다. SpringerOpen에서는 위의 두 가지의 서비스를 첫 논문 투고를 위해 사용하시는 경우, 10%의 할인을 제공하고 있습니다. Nature Research Editing Service이용시 10% 할인을 요청하기 위해서는 여기 를 클릭해 주시고, American Journal Experts 이용시 10% 할인을 요청하기 위해서는 여기 를 클릭해 주십시오.

영문 교정 서비스는 게재를 위한 요구사항은 아니며, 해당 서비스의 이용이 피어 리뷰에 논문이 선택되거나 게재가 수락되는 것을 의미하거나 보장하지 않습니다.

Data and materials

For all journals, SpringerOpen strongly encourages all datasets on which the conclusions of the manuscript rely to be either deposited in publicly available repositories (where available and appropriate) or presented in the main paper or additional supporting files, in machine-readable format (such as spread sheets rather than PDFs) whenever possible. Please see the list of recommended repositories in our editorial policies.

For some journals, deposition of the data on which the conclusions of the manuscript rely is an absolute requirement. Please check the Instructions for Authors for the relevant journal and article type for journal specific policies.

For all manuscripts, information about data availability should be detailed in an ‘Availability of data and materials’ section. For more information on the content of this section, please see the Declarations section of the relevant journal’s Instruction for Authors. For more information on SpringerOpen's policies on data availability, please see our editorial policies .

Formatting the 'Availability of data and materials' section of your manuscript

The following format for the 'Availability of data and materials section of your manuscript should be used:

"The dataset(s) supporting the conclusions of this article is(are) available in the [repository name] repository, [unique persistent identifier and hyperlink to dataset(s) in http:// format]."

The following format is required when data are included as additional files:

"The dataset(s) supporting the conclusions of this article is(are) included within the article (and its additional file(s))."

For databases, this section should state the web/ftp address at which the database is available and any restrictions to its use by non-academics.

For software, this section should include:

  • Project name: e.g. My bioinformatics project
  • Project home page: e.g. http://sourceforge.net/projects/mged
  • Archived version: DOI or unique identifier of archived software or code in repository (e.g. enodo)
  • Operating system(s): e.g. Platform independent
  • Programming language: e.g. Java
  • Other requirements: e.g. Java 1.3.1 or higher, Tomcat 4.0 or higher
  • License: e.g. GNU GPL, FreeBSD etc.
  • Any restrictions to use by non-academics: e.g. licence needed

Information on available repositories for other types of scientific data, including clinical data, can be found in our editorial policies .

What should be cited?

Only articles, clinical trial registration records and abstracts that have been published or are in press, or are available through public e-print/preprint servers, may be cited.

Unpublished abstracts, unpublished data and personal communications should not be included in the reference list, but may be included in the text and referred to as "unpublished observations" or "personal communications" giving the names of the involved researchers. Obtaining permission to quote personal communications and unpublished data from the cited colleagues is the responsibility of the author. Either footnotes or endnotes are permitted. Journal abbreviations follow Index Medicus/MEDLINE.

Any in press articles cited within the references and necessary for the reviewers' assessment of the manuscript should be made available if requested by the editorial office.

Preparing figures

When preparing figures, please follow the formatting instructions below.

  • Figure titles (max 15 words) and legends (max 300 words) should be provided in the main manuscript, not in the graphic file.
  • Tables should NOT be submitted as figures but should be included in the main manuscript file.
  • Multi-panel figures (those with parts a, b, c, d etc.) should be submitted as a single composite file that contains all parts of the figure.
  • Figures should be numbered in the order they are first mentioned in the text, and uploaded in this order.
  • Figures should be uploaded in the correct orientation.
  • Figure keys should be incorporated into the graphic, not into the legend of the figure.
  • Each figure should be closely cropped to minimize the amount of white space surrounding the illustration. Cropping figures improves accuracy when placing the figure in combination with other elements when the accepted manuscript is prepared for publication on our site. For more information on individual figure file formats, see our detailed instructions.
  • Individual figure files should not exceed 10 MB. If a suitable format is chosen, this file size is adequate for extremely high quality figures.
  • Please note that it is the responsibility of the author(s) to obtain permission from the copyright holder to reproduce figures (or tables) that have previously been published elsewhere. In order for all figures to be open access, authors must have permission from the rights holder if they wish to include images that have been published elsewhere in non open access journals. Permission should be indicated in the figure legend, and the original source included in the reference list.

Figure file types

We accept the following file formats for figures:

  • EPS (suitable for diagrams and/or images)
  • PDF (suitable for diagrams and/or images)
  • Microsoft Word (suitable for diagrams and/or images, figures must be a single page)
  • PowerPoint (suitable for diagrams and/or images, figures must be a single page)
  • TIFF (suitable for images)
  • JPEG (suitable for photographic images, less suitable for graphical images)
  • PNG (suitable for images)
  • BMP (suitable for images)
  • CDX (ChemDraw - suitable for molecular structures)

Figure size and resolution

Figures are resized during publication of the final full text and PDF versions to conform to the SpringerOpen standard dimensions, which are detailed below.

Figures on the web:

  • width of 600 pixels (standard), 1200 pixels (high resolution).

Figures in the final PDF version:

  • width of 85 mm for half page width figure
  • width of 170 mm for full page width figure
  • maximum height of 225 mm for figure and legend
  • image resolution of approximately 300 dpi (dots per inch) at the final size

Figures should be designed such that all information, including text, is legible at these dimensions. All lines should be wider than 0.25 pt when constrained to standard figure widths. All fonts must be embedded.

Figure file compression

Vector figures should if possible be submitted as PDF files, which are usually more compact than EPS files.

  • TIFF files should be saved with LZW compression, which is lossless (decreases file size without decreasing quality) in order to minimize upload time.
  • JPEG files should be saved at maximum quality.
  • Conversion of images between file types (especially lossy formats such as JPEG) should be kept to a minimum to avoid degradation of quality.

If you have any questions or are experiencing a problem with figures, please contact the customer service team at [email protected] .

Preparing tables

When preparing tables, please follow the formatting instructions below.

  • Tables should be numbered and cited in the text in sequence using Arabic numerals (i.e. Table 1, Table 2 etc.).
  • Tables less than one A4 or Letter page in length can be placed in the appropriate location within the manuscript.
  • Tables larger than one A4 or Letter page in length can be placed at the end of the document text file. Please cite and indicate where the table should appear at the relevant location in the text file so that the table can be added in the correct place during production.
  • Larger datasets, or tables too wide for A4 or Letter landscape page can be uploaded as additional files. Please see [below] for more information.
  • Tabular data provided as additional files can be uploaded as an Excel spreadsheet (.xls ) or comma separated values (.csv). Please use the standard file extensions.
  • Table titles (max 15 words) should be included above the table, and legends (max 300 words) should be included underneath the table.
  • Tables should not be embedded as figures or spreadsheet files, but should be formatted using ‘Table object’ function in your word processing program.
  • Color and shading may not be used. Parts of the table can be highlighted using superscript, numbering, lettering, symbols or bold text, the meaning of which should be explained in a table legend.
  • Commas should not be used to indicate numerical values.

If you have any questions or are experiencing a problem with tables, please contact the customer service team at [email protected] .

Preparing additional files

As the length and quantity of data is not restricted for many article types, authors can provide datasets, tables, movies, or other information as additional files.

All Additional files will be published along with the accepted article. Do not include files such as patient consent forms, certificates of language editing, or revised versions of the main manuscript document with tracked changes. Such files, if requested, should be sent by email to the journal’s editorial email address, quoting the manuscript reference number.

Results that would otherwise be indicated as "data not shown" should be included as additional files. Since many web links and URLs rapidly become broken, SpringerOpen requires that supporting data are included as additional files, or deposited in a recognized repository. Please do not link to data on a personal/departmental website. Do not include any individual participant details. The maximum file size for additional files is 20 MB each, and files will be virus-scanned on submission. Each additional file should be cited in sequence within the main body of text.

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Mini-Review

Mini-reviews covers abreast of advances and trends in biomedical research. This type applies same format as standard Review articles, but main body text should not exceed 2,000 words with no more than 100 references. 

Please use this template when preparing your Mini-Review manuscript. 

Preparing your manuscript

The information below details the section headings that you should include in your manuscript and what information should be within each section.

Please note that your manuscript must include a 'Declarations' section including all of the subheadings (please see below for more information).

The title page should:

  • "A versus B in the treatment of C: a randomized controlled trial", "X is a risk factor for Y: a case control study", "What is the impact of factor X on subject Y: A systematic review"
  • or for non-clinical or non-research studies: a description of what the article reports
  • if a collaboration group should be listed as an author, please list the Group name as an author. If you would like the names of the individual members of the Group to be searchable through their individual PubMed records, please include this information in the “Acknowledgements” section in accordance with the instructions below
  • Large Language Models (LLMs), such as ChatGPT , do not currently satisfy our authorship criteria . Notably an attribution of authorship carries with it accountability for the work, which cannot be effectively applied to LLMs. Use of an LLM should be properly documented in the Methods section (and if a Methods section is not available, in a suitable alternative part) of the manuscript
  • indicate the corresponding author

The Abstract should not exceed 350 words. Please minimize the use of abbreviations and do not cite references in the abstract.

Three to ten keywords representing the main content of the article.

The Background section should explain the background to the article, its aims, a summary of a search of the existing literature and the issue under discussion.

This should contain the body of the article, and may also be broken into subsections with short, informative headings.

Conclusions

This should state clearly the main conclusions and include an explanation of their relevance or importance to the field.

List of abbreviations

If abbreviations are used in the text they should be defined in the text at first use, and a list of abbreviations should be provided.

Declarations

All manuscripts must contain the following sections under the heading 'Declarations':

Availability of data and materials

Competing interests

Authors' contributions

Acknowledgements

  • Authors' information (optional)

Please see below for details on the information to be included in these sections.

If any of the sections are not relevant to your manuscript, please include the heading and write 'Not applicable' for that section.

For all journals, BioMed Central strongly encourages all datasets on which the conclusions of the manuscript rely to be either deposited in publicly available repositories (where available and appropriate) or presented in the main paper or additional supporting files, in machine-readable format (such as spreadsheets rather than PDFs) whenever possible. Please see the list of recommended repositories in our editorial policies.

For some journals, deposition of the data on which the conclusions of the manuscript rely is an absolute requirement. Please check the Criteria section for this article type (located at the top of this page) for journal specific policies.

For all journals, authors must include an “Availability of data and materials” section in their article detailing where the data supporting their findings can be found. If you do not wish to share your data, please state that data will not be shared, and state the reason.

For instructions on how to cite your data and format this section see preparation/style and formatting.

If you wish to co-submit a data note describing your data to be published in BMC Research Notes , you can do so by visiting our submission portal . Data notes support open data and help authors to comply with funder policies on data sharing. Co-published data notes will be linked to the research article the data support ( example ).

All financial and non-financial competing interests must be declared in this section. See our editorial policies for a full explanation of competing interests. If you are unsure whether you or any of your co-authors have a competing interest please contact the editorial office.

All sources of funding for the research reported should be declared. If the funder has a specific role in the conceptualization, design, data collection, analysis, decision to publish, or preparation of the manuscript, this should be declared.

The individual contributions of authors to the manuscript should be specified in this section.

Please acknowledge anyone who contributed towards the article who does not meet the criteria for authorship including anyone who provided professional writing services or materials.

Authors should obtain permission to acknowledge from all those mentioned in the Acknowledgements section.

See our editorial policies for a full explanation of acknowledgements and authorship criteria.

Group authorship: if you would like the names of the individual members of a collaboration Group to be searchable through their individual PubMed records (where applicable), please ensure that the title of the collaboration Group is included on the title page and in the submission system and also include collaborating author names as the last paragraph of the “Acknowledgements” section. Please add authors in the format First Name, Middle initial(s) (optional), Last Name. You can add institution or country information for each author if you wish, but this should be consistent across all authors.

Authors' information

You may choose to use this section to include any relevant information about the author(s) that may aid the reader's interpretation of the article, and understand the standpoint of the author(s). This may include details about the authors' qualifications, current positions they hold at institutions or societies, or any other relevant background information. Please refer to authors using their initials. Note this section should not be used to describe any competing interests.

Footnotes should be designated within the text using a superscript number. It is not allowed to use footnotes for references/citations.

Examples of the Vancouver reference style are shown below.

See our editorial policies for author guidance on good citation practice

Web links and URLs: All web links and URLs, including links to the authors' own websites, should be given a reference number and included in the reference list rather than within the text of the manuscript. They should be provided in full, including both the title of the site and the URL, as well as the date the site was accessed, in the following format: The Mouse Tumor Biology Database. http://tumor.informatics.jax.org/mtbwi/index.do . Accessed 20 May 2013. If an author or group of authors can clearly be associated with a web link, such as for weblogs, then they should be included in the reference.

Example reference style:

Article within a journal

Smith JJ. The world of science. Am J Sci. 1999;36:234-5.

Article within a journal (no page numbers)

Rohrmann S, Overvad K, Bueno-de-Mesquita HB, Jakobsen MU, Egeberg R, Tjønneland A, et al. Meat consumption and mortality - results from the European Prospective Investigation into Cancer and Nutrition. BMC Medicine. 2013;11:63.

Article within a journal by DOI

Slifka MK, Whitton JL. Clinical implications of dysregulated cytokine production. Dig J Mol Med. 2000; doi:10.1007/s801090000086.

Article within a journal supplement

Frumin AM, Nussbaum J, Esposito M. Functional asplenia: demonstration of splenic activity by bone marrow scan. Blood 1979;59 Suppl 1:26-32.

Book chapter, or an article within a book

Wyllie AH, Kerr JFR, Currie AR. Cell death: the significance of apoptosis. In: Bourne GH, Danielli JF, Jeon KW, editors. International review of cytology. London: Academic; 1980. p. 251-306.

OnlineFirst chapter in a series (without a volume designation but with a DOI)

Saito Y, Hyuga H. Rate equation approaches to amplification of enantiomeric excess and chiral symmetry breaking. Top Curr Chem. 2007. doi:10.1007/128_2006_108.

Complete book, authored

Blenkinsopp A, Paxton P. Symptoms in the pharmacy: a guide to the management of common illness. 3rd ed. Oxford: Blackwell Science; 1998.

Online document

Doe J. Title of subordinate document. In: The dictionary of substances and their effects. Royal Society of Chemistry. 1999. http://www.rsc.org/dose/title of subordinate document. Accessed 15 Jan 1999.

Online database

Healthwise Knowledgebase. US Pharmacopeia, Rockville. 1998. http://www.healthwise.org. Accessed 21 Sept 1998.

Supplementary material/private homepage

Doe J. Title of supplementary material. 2000. http://www.privatehomepage.com. Accessed 22 Feb 2000.

University site

Doe, J: Title of preprint. http://www.uni-heidelberg.de/mydata.html (1999). Accessed 25 Dec 1999.

Doe, J: Trivial HTTP, RFC2169. ftp://ftp.isi.edu/in-notes/rfc2169.txt (1999). Accessed 12 Nov 1999.

Organization site

ISSN International Centre: The ISSN register. http://www.issn.org (2006). Accessed 20 Feb 2007.

Dataset with persistent identifier

Zheng L-Y, Guo X-S, He B, Sun L-J, Peng Y, Dong S-S, et al. Genome data from sweet and grain sorghum (Sorghum bicolor). GigaScience Database. 2011. http://dx.doi.org/10.5524/100012 .

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See  General formatting guidelines  for information on how to format figures, tables and additional files.

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Sex and Gender in Research

We encourage our authors to include sex and gender considerations where relevant. Authors should use the terms sex (biological attribute) and gender (shaped by social and cultural circumstances) carefully in order to avoid confusing both terms. Article titles and/or abstracts should indicate clearly what sex(es) the study applies to. Authors should also describe in the background, whether sex and/or gender differences may be expected; report how sex and/or gender were accounted for in the design of the study; provide disaggregated data by sex and/or gender, where appropriate; and discuss respective results.

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Laboratory Animal Research is the official journal of the  Korean Association for Laboratory Animal Science . KALAS was established in 1985 in order to discuss the knowledge of the experiment, and promote the science and technology in laboratory animal sciences.

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How to write a good scientific review article

Affiliation.

  • 1 The FEBS Journal Editorial Office, Cambridge, UK.
  • PMID: 35792782
  • DOI: 10.1111/febs.16565

Literature reviews are valuable resources for the scientific community. With research accelerating at an unprecedented speed in recent years and more and more original papers being published, review articles have become increasingly important as a means to keep up to date with developments in a particular area of research. A good review article provides readers with an in-depth understanding of a field and highlights key gaps and challenges to address with future research. Writing a review article also helps to expand the writer's knowledge of their specialist area and to develop their analytical and communication skills, amongst other benefits. Thus, the importance of building review-writing into a scientific career cannot be overstated. In this instalment of The FEBS Journal's Words of Advice series, I provide detailed guidance on planning and writing an informative and engaging literature review.

© 2022 Federation of European Biochemical Societies.

Publication types

Mini-Review

The Journal of Physiological Sciences publishes peer-reviewed Mini-reviews, based on the principles and theories of modern physiology. Mini-reviews should be no longer than 3,000 words excluding References, providing a short overview of a particular subject. Mini-reviews are usually solicited by the editor.

In the process of online submission, authors are requested to choose a manuscript submission classification from the following 16 categories: Molecular Biology, Gastrointestinal Physiology, Biophysics, Heart and Circulation, Physiome, Endocrinology Metabolisms, Kidney and Body Fluid, Respiration, Adaptation, Exercise Physiology, Muscle Physiology, Autonomic Nervous System, Channels and Membrane Transport, Neurobiology and Behavior, Sensory Physiology, Excitable Membranes.

Graphical abstract

Authors are strongly encouraged to upload a graphical abstract at the time of submission of the revised manuscript. This is a picture which will appear underneath the Abstract on the journal website. It should be relevant to the topic covered and serve to attract readers' attention to the article. The graphical abstract image may be one of the images included in the article or any other image the authors feel to be appropriate. It may be a composite of more than one image. The image should have an aspect ratio of 2:5 and should be uploaded as a JPEG, PNG or SVG file. Please note that graphical abstract images must comply with BMC's copyright policy.

Preparing your manuscript

The information below details the section headings that you should include in your manuscript and what information should be within each section.

Please note that your manuscript must include a 'Declarations' section including all of the subheadings (please see below for more information).

The title page should:

  • "A versus B in the treatment of C: a randomized controlled trial", "X is a risk factor for Y: a case control study", "What is the impact of factor X on subject Y: A systematic review"
  • or for non-clinical or non-research studies: a description of what the article reports
  • if a collaboration group should be listed as an author, please list the Group name as an author. If you would like the names of the individual members of the Group to be searchable through their individual PubMed records, please include this information in the “Acknowledgements” section in accordance with the instructions below
  • indicate the corresponding author

The Abstract should be 100 to 150 words in length and unstructured. Please minimize the use of abbreviations and do not cite references in the abstract.

Four to six keywords representing the main content of the article.

The Background section should explain the background to the article, its aims, a summary of a search of the existing literature and the issue under discussion.

This should contain the body of the article, and may also be broken into subsections with short, informative headings.

Conclusions

This should state clearly the main conclusions and include an explanation of their relevance or importance to the field.

List of abbreviations

If abbreviations are used in the text they should be defined in the text at first use, and a list of abbreviations should be provided.

Declarations

All manuscripts must contain the following sections under the heading 'Declarations':

Ethics approval and consent to participate

Consent for publication, availability of data and materials, competing interests, authors' contributions, acknowledgements.

  • Authors' information (optional)

Please see below for details on the information to be included in these sections.

If any of the sections are not relevant to your manuscript, please include the heading and write 'Not applicable' for that section. 

Manuscripts reporting studies involving human participants, human data or human tissue must:

  • include a statement on ethics approval and consent (even where the need for approval was waived)
  • include the name of the ethics committee that approved the study and the committee’s reference number if appropriate

Studies involving animals must include a statement on ethics approval and for experimental studies involving client-owned animals, authors must also include a statement on informed consent from the client or owner.

See our editorial policies for more information.

If your manuscript does not report on or involve the use of any animal or human data or tissue, please state “Not applicable” in this section.

If your manuscript contains any individual person’s data in any form (including any individual details, images or videos), consent for publication must be obtained from that person, or in the case of children, their parent or legal guardian. All presentations of case reports must have consent for publication.

You can use your institutional consent form or our consent form if you prefer. You should not send the form to us on submission, but we may request to see a copy at any stage (including after publication).

See our editorial policies for more information on consent for publication.

If your manuscript does not contain data from any individual person, please state “Not applicable” in this section.

All manuscripts must include an ‘Availability of data and materials’ statement. Data availability statements should include information on where data supporting the results reported in the article can be found including, where applicable, hyperlinks to publicly archived datasets analysed or generated during the study. By data we mean the minimal dataset that would be necessary to interpret, replicate and build upon the findings reported in the article. We recognise it is not always possible to share research data publicly, for instance when individual privacy could be compromised, and in such instances data availability should still be stated in the manuscript along with any conditions for access.

Authors are also encouraged to preserve search strings on searchRxiv https://searchrxiv.org/ , an archive to support researchers to report, store and share their searches consistently and to enable them to review and re-use existing searches. searchRxiv enables researchers to obtain a digital object identifier (DOI) for their search, allowing it to be cited. 

Data availability statements can take one of the following forms (or a combination of more than one if required for multiple datasets):

  • The datasets generated and/or analysed during the current study are available in the [NAME] repository, [PERSISTENT WEB LINK TO DATASETS]
  • The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.
  • All data generated or analysed during this study are included in this published article [and its supplementary information files].
  • The datasets generated and/or analysed during the current study are not publicly available due [REASON WHY DATA ARE NOT PUBLIC] but are available from the corresponding author on reasonable request.
  • Data sharing is not applicable to this article as no datasets were generated or analysed during the current study.
  • The data that support the findings of this study are available from [third party name] but restrictions apply to the availability of these data, which were used under license for the current study, and so are not publicly available. Data are however available from the authors upon reasonable request and with permission of [third party name].
  • Not applicable. If your manuscript does not contain any data, please state 'Not applicable' in this section.

More examples of template data availability statements, which include examples of openly available and restricted access datasets, are available here .

BioMed Central strongly encourages the citation of any publicly available data on which the conclusions of the paper rely in the manuscript. Data citations should include a persistent identifier (such as a DOI) and should ideally be included in the reference list. Citations of datasets, when they appear in the reference list, should include the minimum information recommended by DataCite and follow journal style. Dataset identifiers including DOIs should be expressed as full URLs. For example:

Hao Z, AghaKouchak A, Nakhjiri N, Farahmand A. Global integrated drought monitoring and prediction system (GIDMaPS) data sets. figshare. 2014. http://dx.doi.org/10.6084/m9.figshare.853801

With the corresponding text in the Availability of data and materials statement:

The datasets generated during and/or analysed during the current study are available in the [NAME] repository, [PERSISTENT WEB LINK TO DATASETS]. [Reference number]  

If you wish to co-submit a data note describing your data to be published in BMC Research Notes , you can do so by visiting our submission portal . Data notes support open data and help authors to comply with funder policies on data sharing. Co-published data notes will be linked to the research article the data support ( example ).

All financial and non-financial competing interests must be declared in this section.

See our editorial policies for a full explanation of competing interests. If you are unsure whether you or any of your co-authors have a competing interest please contact the editorial office.

Please use the authors initials to refer to each authors' competing interests in this section.

If you do not have any competing interests, please state "The authors declare that they have no competing interests" in this section.

All sources of funding for the research reported should be declared. If the funder has a specific role in the conceptualization, design, data collection, analysis, decision to publish, or preparation of the manuscript, this should be declared.

The individual contributions of authors to the manuscript should be specified in this section. Guidance and criteria for authorship can be found in our editorial policies .

Please use initials to refer to each author's contribution in this section, for example: "FC analyzed and interpreted the patient data regarding the hematological disease and the transplant. RH performed the histological examination of the kidney, and was a major contributor in writing the manuscript. All authors read and approved the final manuscript."

Please acknowledge anyone who contributed towards the article who does not meet the criteria for authorship including anyone who provided professional writing services or materials.

Authors should obtain permission to acknowledge from all those mentioned in the Acknowledgements section.

See our editorial policies for a full explanation of acknowledgements and authorship criteria.

If you do not have anyone to acknowledge, please write "Not applicable" in this section.

Group authorship (for manuscripts involving a collaboration group): if you would like the names of the individual members of a collaboration Group to be searchable through their individual PubMed records, please ensure that the title of the collaboration Group is included on the title page and in the submission system and also include collaborating author names as the last paragraph of the “Acknowledgements” section. Please add authors in the format First Name, Middle initial(s) (optional), Last Name. You can add institution or country information for each author if you wish, but this should be consistent across all authors.

Please note that individual names may not be present in the PubMed record at the time a published article is initially included in PubMed as it takes PubMed additional time to code this information.

Authors' information

This section is optional.

You may choose to use this section to include any relevant information about the author(s) that may aid the reader's interpretation of the article, and understand the standpoint of the author(s). This may include details about the authors' qualifications, current positions they hold at institutions or societies, or any other relevant background information. Please refer to authors using their initials. Note this section should not be used to describe any competing interests.

Footnotes can be used to give additional information, which may include the citation of a reference included in the reference list. They should not consist solely of a reference citation, and they should never include the bibliographic details of a reference. They should also not contain any figures or tables.

Footnotes to the text are numbered consecutively; those to tables should be indicated by superscript lower-case letters (or asterisks for significance values and other statistical data). Footnotes to the title or the authors of the article are not given reference symbols.

Always use footnotes instead of endnotes.

Examples of the Basic Springer reference style are shown below. 

See our editorial policies for author guidance on good citation practice.

Web links and URLs: All web links and URLs, including links to the authors' own websites, should be given a reference number and included in the reference list rather than within the text of the manuscript. They should be provided in full, including both the title of the site and the URL, as well as the date the site was accessed, in the following format: The Mouse Tumor Biology Database. http://tumor.informatics.jax.org/mtbwi/index.do . Accessed 20 May 2013. If an author or group of authors can clearly be associated with a web link, such as for weblogs, then they should be included in the reference.

​​​​​​​ Example reference style:

Article within a journal

Smith J, Jones M Jr, Houghton L (1999) Future of health insurance. N Engl J Med 965:325-329.

Article by DOI (with page numbers)

Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. J Mol Med 78:74-80. doi:10.1007/s001090000086.

Article by DOI (before issue publication and with page numbers)

Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. J Mol Med. doi:10.1007/s001090000086.

Article in electronic journal by DOI (no paginated version)

Slifka MK, Whitton JL (2000) Clinical implications of dysregulated cytokine production. Dig J Mol Med. doi:10.1007/s801090000086.

Journal issue with issue editor

Smith J (ed) (1998) Rodent genes. Mod Genomics J 14(6):126-233.

Journal issue with no issue editor

Mod Genomics J (1998) Rodent genes. Mod Genomics J 14(6):126-233.

Book chapter, or an article within a book

Brown B, Aaron M (2001) The politics of nature. In: Smith J (ed) The rise of modern genomics, 3rd edn. Wiley, New York.

Complete book, authored

South J, Blass B (2001) The future of modern genomics. Blackwell, London.

Complete book, edited

Smith J, Brown B (eds) (2001) The demise of modern genomics. Blackwell, London.

Complete book, also showing a translated edition [Either edition may be listed first.]

Adorno TW (1966) Negative Dialektik. Suhrkamp, Frankfurt. English edition: Adorno TW (1973) Negative Dialectics (trans: Ashton EB). Routledge, London.

Chapter in a book in a series without volume titles

Schmidt H (1989) Testing results. In: Hutzinger O (ed) Handbook of environmental chemistry, vol 2E. Springer, Heidelberg, p 111.

Chapter in a book in a series with volume titles

Smith SE (1976) Neuromuscular blocking drugs in man. In: Zaimis E (ed) Neuromuscular junction. Handbook of experimental pharmacology, vol 42. Springer, Heidelberg, pp 593-660.

OnlineFirst chapter in a series (without a volume designation but with a DOI)

Saito, Yukio, and Hyuga, Hiroyuki. (2007) Rate equation approaches to amplification of enantiomeric excess and chiral symmetry breaking. Topics in Current Chemistry. doi:10.1007/128_2006_108.

Proceedings as a book (in a series and subseries)

Zowghi D (1996) A framework for reasoning about requirements in evolution. In: Foo N, Goebel R (eds) PRICAI'96: topics in artificial intelligence. 4th Pacific Rim conference on artificial intelligence, Cairns, August 1996. Lecture notes in computer science (Lecture notes in artificial intelligence), vol 1114. Springer, Heidelberg, p 157.

Article within conference proceedings with an editor (without a publisher)

Aaron M (1999) The future of genomics. In: Williams H (ed) Proceedings of the genomic researchers, Boston, 1999.

Article within conference proceedings without an editor (without a publisher)

Chung S-T, Morris RL (1978) Isolation and characterization of plasmid deoxyribonucleic acid from Streptomyces fradiae. In: Abstracts of the 3rd international symposium on the genetics of industrial microorganisms, University of Wisconsin, Madison, 4-9 June 1978.

Article presented at a conference

Chung S-T, Morris RL (1978) Isolation and characterization of plasmid deoxyribonucleic acid from Streptomyces fradiae. Paper presented at the 3rd international symposium on the genetics of industrial microorganisms, University of Wisconsin, Madison, 4-9 June 1978.

Norman LO (1998) Lightning rods. US Patent 4,379,752, 9 Sept 1998.

Dissertation

Trent JW (1975) Experimental acute renal failure. Dissertation, University of California.

Book with institutional author

International Anatomical Nomenclature Committee (1966) Nomina anatomica. Excerpta Medica, Amsterdam.

In press article

Major M (2007) Recent developments. In: Jones W (ed) Surgery today. Springer, Dordrecht (in press).  

Online document

Doe J (1999) Title of subordinate document. In: The dictionary of substances and their effects. Royal Society of Chemistry. Available via DIALOG. http://www.rsc.org/dose/title of subordinate document. Accessed 15 Jan 1999.

Online database

Healthwise Knowledgebase (1998) US Pharmacopeia, Rockville. http://www.healthwise.org. Accessed 21 Sept 1998.

Supplementary material/private homepage

Doe J (2000) Title of supplementary material. http://www.privatehomepage.com. Accessed 22 Feb 2000.

University site

Doe J (1999) Title of preprint. http://www.uni-heidelberg.de/mydata.html. Accessed 25 Dec 1999.

Doe J (1999) Trivial HTTP, RFC2169. ftp://ftp.isi.edu/in-notes/rfc2169.txt. Accessed 12 Nov 1999.

Organization site

ISSN International Centre (2006) The ISSN register. http://www.issn.org. Accessed 20 Feb 2007.

Figures, tables and additional files

See  General formatting guidelines  for information on how to format figures, tables and additional files.

Submit manuscript

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Annual Journal Metrics

2022 Citation Impact 2.3 - 2-year Impact Factor 3.0 - 5-year Impact Factor 0.878 - SNIP (Source Normalized Impact per Paper) 0.665 - SJR (SCImago Journal Rank)

2023 Speed 12 days submission to first editorial decision for all manuscripts (Median) 111 days submission to accept (Median)

2023 Usage 548,878   downloads 415 Altmetric mentions 

The Journal of Physiological Sciences

ISSN: 1880-6562

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  • General enquiries: [email protected]

Mini review

Mini review - two books and a smartphone demonstrating that the article type can be read anywhere

Mini Reviews are concise articles aiming to provide an insight into timely and relevant topics. The aim of these is to act as a 'state-of-the-art' overview of key areas for the journal's readers.

These should cover three aspects - the basis of the subject, the research undertaken so far, and what crucial next steps need to be taken.

Mini Reviews should consist of a maximum of 1000 words (excluding references, but including a short summary abstract), and one figure illustrating an important aspect of the topic in question.

Preparing your manuscript

The information below details the section headings that you should include in your manuscript and what information should be within each section.

Please note that your manuscript must include a 'Declarations' section including all of the subheadings (please see below for more information).

The title page should:

  • "A versus B in the treatment of C: a randomized controlled trial", "X is a risk factor for Y: a case control study", "What is the impact of factor X on subject Y: A systematic review"
  • or for non-clinical or non-research studies: a description of what the article reports
  • if a collaboration group should be listed as an author, please list the Group name as an author. If you would like the names of the individual members of the Group to be searchable through their individual PubMed records, please include this information in the “Acknowledgements” section in accordance with the instructions below
  • Large Language Models (LLMs), such as ChatGPT , do not currently satisfy our authorship criteria . Notably an attribution of authorship carries with it accountability for the work, which cannot be effectively applied to LLMs. Use of an LLM should be properly documented in the Methods section (and if a Methods section is not available, in a suitable alternative part) of the manuscript
  • indicate the corresponding author

The Abstract should not exceed 350 words and should be structured with a background, main body of the abstract and short conclusion. Please minimize the use of abbreviations and do not cite references in the abstract.

Three to ten keywords representing the main content of the article.

The Background section should explain the background to the article, its aims, a summary of a search of the existing literature and the issue under discussion.

This should contain the body of the article, and may also be broken into subsections with short, informative headings.

Conclusions

This should state clearly the main conclusions and include an explanation of their relevance or importance to the field.

List of abbreviations

If abbreviations are used in the text they should be defined in the text at first use, and a list of abbreviations should be provided.

Declarations

All manuscripts must contain the following sections under the heading 'Declarations':

Ethics approval and consent to participate

Consent for publication, availability of data and materials, competing interests, authors' contributions, acknowledgements.

  • Authors' information (optional)

Please see below for details on the information to be included in these sections.

If any of the sections are not relevant to your manuscript, please include the heading and write 'Not applicable' for that section. 

Manuscripts reporting studies involving human participants, human data or human tissue must:

  • include a statement on ethics approval and consent (even where the need for approval was waived)
  • include the name of the ethics committee that approved the study and the committee’s reference number if appropriate

Studies involving animals must include a statement on ethics approval and for experimental studies involving client-owned animals, authors must also include a statement on informed consent from the client or owner.

See our editorial policies for more information.

If your manuscript does not report on or involve the use of any animal or human data or tissue, please state “Not applicable” in this section.

If your manuscript contains any individual person’s data in any form (including any individual details, images or videos), consent for publication must be obtained from that person, or in the case of children, their parent or legal guardian. All presentations of case reports must have consent for publication.

You can use your institutional consent form or our consent form if you prefer. You should not send the form to us on submission, but we may request to see a copy at any stage (including after publication).

See our editorial policies for more information on consent for publication.

If your manuscript does not contain data from any individual person, please state “Not applicable” in this section.

All manuscripts must include an ‘Availability of data and materials’ statement. Data availability statements should include information on where data supporting the results reported in the article can be found including, where applicable, hyperlinks to publicly archived datasets analysed or generated during the study. By data we mean the minimal dataset that would be necessary to interpret, replicate and build upon the findings reported in the article. We recognise it is not always possible to share research data publicly, for instance when individual privacy could be compromised, and in such instances data availability should still be stated in the manuscript along with any conditions for access.

Authors are also encouraged to preserve search strings on searchRxiv https://searchrxiv.org/ , an archive to support researchers to report, store and share their searches consistently and to enable them to review and re-use existing searches. searchRxiv enables researchers to obtain a digital object identifier (DOI) for their search, allowing it to be cited. 

Data availability statements can take one of the following forms (or a combination of more than one if required for multiple datasets):

  • The datasets generated and/or analysed during the current study are available in the [NAME] repository, [PERSISTENT WEB LINK TO DATASETS]
  • The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.
  • All data generated or analysed during this study are included in this published article [and its supplementary information files].
  • The datasets generated and/or analysed during the current study are not publicly available due [REASON WHY DATA ARE NOT PUBLIC] but are available from the corresponding author on reasonable request.
  • Data sharing is not applicable to this article as no datasets were generated or analysed during the current study.
  • The data that support the findings of this study are available from [third party name] but restrictions apply to the availability of these data, which were used under license for the current study, and so are not publicly available. Data are however available from the authors upon reasonable request and with permission of [third party name].
  • Not applicable. If your manuscript does not contain any data, please state 'Not applicable' in this section.

More examples of template data availability statements, which include examples of openly available and restricted access datasets, are available here .

BioMed Central strongly encourages the citation of any publicly available data on which the conclusions of the paper rely in the manuscript. Data citations should include a persistent identifier (such as a DOI) and should ideally be included in the reference list. Citations of datasets, when they appear in the reference list, should include the minimum information recommended by DataCite and follow journal style. Dataset identifiers including DOIs should be expressed as full URLs. For example:

Hao Z, AghaKouchak A, Nakhjiri N, Farahmand A. Global integrated drought monitoring and prediction system (GIDMaPS) data sets. figshare. 2014. http://dx.doi.org/10.6084/m9.figshare.853801

With the corresponding text in the Availability of data and materials statement:

The datasets generated during and/or analysed during the current study are available in the [NAME] repository, [PERSISTENT WEB LINK TO DATASETS]. [Reference number]  

If you wish to co-submit a data note describing your data to be published in BMC Research Notes , you can do so by visiting our submission portal . Data notes support open data and help authors to comply with funder policies on data sharing. Co-published data notes will be linked to the research article the data support ( example ).

All financial and non-financial competing interests must be declared in this section.

See our editorial policies for a full explanation of competing interests. If you are unsure whether you or any of your co-authors have a competing interest please contact the editorial office.

Please use the authors initials to refer to each authors' competing interests in this section.

If you do not have any competing interests, please state "The authors declare that they have no competing interests" in this section.

All sources of funding for the research reported should be declared. If the funder has a specific role in the conceptualization, design, data collection, analysis, decision to publish, or preparation of the manuscript, this should be declared.

The individual contributions of authors to the manuscript should be specified in this section. Guidance and criteria for authorship can be found in our editorial policies .

Please use initials to refer to each author's contribution in this section, for example: "FC analyzed and interpreted the patient data regarding the hematological disease and the transplant. RH performed the histological examination of the kidney, and was a major contributor in writing the manuscript. All authors read and approved the final manuscript."

Please acknowledge anyone who contributed towards the article who does not meet the criteria for authorship including anyone who provided professional writing services or materials.

Authors should obtain permission to acknowledge from all those mentioned in the Acknowledgements section.

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A mini review on the separation of Al, Fe and Ti elements from coal fly ash leachate

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  • Published: 30 March 2024
  • Volume 11 , article number  24 , ( 2024 )

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  • Yuan Shi 1 ,
  • Fengqi Jiang 1 ,
  • Rongjiao Wang 1 ,
  • Sasha Yang 2 ,
  • Xiaofeng Zhu 1 &
  • Yingying Shen 1  

The electricity demand is increasing rapidly with the development of society and technology. Coal-fired thermal power plants have become one of the primary sources of electricity generation for urbanization. However, coal-fired thermal power plants produce a great amount of by-product coal fly ash every year. Coal fly ash disposal in landfills requires a sizable space and has negative environmental impacts. Therefore, it is crucial to develop new technologies and methods to utilize this enormous volume of solid waste in order to protect the environment. In this review, the fundamental physical and chemical characteristics of coal fly ash are introduced, and afterward the disposal policies and utilization ways of coal fly ash are discussed to gain a comprehensive understanding of the various ways this waste. The leaching of valuable metals in coal fly ash and the extraction of metal elements in leachate under different conditions are also summarized. Furthermore, the possibility of coal fly ash to serve as a supplementary source for mineral resources is analyzed, providing a basis for its extensive use as a raw material in the metal industry in China and worldwide.

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Strategies for Collection, Treatment, and Recycling of Fly Ash from Thermal Power Plants

Avoid common mistakes on your manuscript.

1 Introduction

Coal fly ash (CFA) can be divided into traditional pulverized coal furnace (CF) fly ash and circulating fluidized bed boiler derived (CFB) fly ash. CF fly ash is a common industrial solid waste generated from coal-fired power plants, with an estimated global production of approximately 600–800 million tons per year (Jayaranjan et al. 2014 ; Xiao et al. 2021 ). CFB fly ash is solid waste discharged from thermal power plants using circulating fluidized bed boilers and has different characteristics to fly ash produced by pulverized coal boiler units due to the relatively low combustion temperatures used (850–900 °C) (He et al. 2021 ). By summarizing the basic characteristics and current status of utilization of CFA, a comprehensive understanding of the interrelationships between different applications can be obtained.

1.1 Main characteristics of the CF fly ash and CFB fly ash

CF fly ash usually shows a spherical or spherical structure after drying (Shi et al. 2022 ) with its physical appearance, ranging from dark brown to light grey (Qiu et al. 2021 ; Ram and Mohanty 2022 ), determined by the amount of unburned carbon remaining after the coal combustion process (Gollakota et al. 2019 ; Yang et al. 2022 ). The carbon content is generally lower (higher) when the color is lighter (darker). The chemical makeup of CF fly ash is significantly influenced by factors of coal type and combustion conditions, while CF fly ash consists of approximately 90%–99% inorganic components, 1%–9% organic components, and less than 0.5% fluid components (Besari et al. 2022 ). In addition, Zhang et al. ( 2018a ) proposed that the surface of CF fly ash will form a large amount of mullite and encapsulate the amorphous phase material during coal combustion. In general, the primary constituents of CF fly ash include SiO 2 (35 wt%–65 wt%), Al 2 O 3 (9 wt%–45 wt%), and Fe 2 O 3 (1%–20%) (Wang et al. 2021 ; Mushtaq et al. 2019 ). Moreover, CaO, MgO, K 2 O, Na 2 O, TiO 2 and other oxides (Lee et al. 2017 ; Shi et al. 2020 ), as well as Hg, Cr, Ni, Co, Pb, V, As, Se and other trace hazardous elements (Ramanathan et al. 2020 ) are also included.

Compared to CF fly ash, CFB fly ash has a smaller particle size and a larger specific surface area (Liu et al. 2019 ). The main chemical components of CFB fly ash exist in the form of oxides, including SiO 2 , Al 2 O 3 , CaO, Fe 2 O 3 (0.1 wt%–30 wt%), SO 3 (0.5 wt%–40 wt%), where the chemical composition of SiO 2 , Al 2 O 3 , and CaO varies from 0 to over 50 wt% (Ohenoja et al. 2020 ). In addition, CFB fly ash contains some trace elements such as chloride, Na, Ti, As, Cd, Cr, Hg, Ni, and Pb etc. (Yang et al. 2019 ).

CFA is commonly categorized into two different types based on the content of silica, aluminum, and iron. That is, according to the American Society for Testing and Materials (ASTM) C618 standard, when the total percentage of this ingredient is less than 60%, it is named Class C, and more than 70% is defined as Class F. The chemical constituents of CFA from different literature are listed in Table  1 .

Improper handling of CFA can lead to serious environmental pollution due to the presence of toxic elements (Wang et al. 2020a ). On the other hand, inhaling abandoned or hoarded CFA can also pose health risks to humans, potentially leading to various illnesses (Hong et al. 2021 ). Moreover, CFA has the potential to adversely impact the environment through groundwater contamination (Almahayni and Vanhoudt 2018 ). Therefore, making the harmless and environmentally friendly utilization of CFA is crucial. In recent years, the extraction of valent metals in CFA has received a lot of attention. It is one of the ways of high value-added application of CFA with good economic benefits.

1.2 The development strategy for the CFA

CFA is classified as a special waste by regulations, and its treatment in an ordinary landfill is prohibited (Gupta et al. 2020 ), so to reduce the environmental contamination created by coal-fired power facilities, the waste is separated from the flue gas in the chimney by a dust collector to realize the standardized production of CFA (Asl et al. 2018 ). However, it has been shown that CFA ponds and landfills leach harmful substances into streams and drinking water (Singh et al. 2016 ). CFA will have a long-term impact on the ecosystem due to its weathering environment that cannot maintain continuous isolation. As a result, the current waste treatment regulations require the isolation of CFA deposits in the containment system to avoid contaminants from seeping (Bhatt et al. 2019 ). To lower the leaching rate of heavy metals in the trash during landfill treatment, the Environmental Protection Agency rules additionally promote the disposal of CFA using new methods such as sintering (Biernacki et al. 2008 ) and geopolymer matrix stabilization (Gupta et al. 2020 ).

Most nations regulate CFA reuse under the Environmental Protection Agency's (EPA) Coal Combustion Residuals regulation, although there have been occasional failures to establish necessary protections for community and environmental health (SACE, Southern Alliance for Clean Energy 2020 ). Based on the USEPA's CFA rules, some health and safety simulation experiments are required for projects using CFA over 12,400 tons on land. (SACE, Southern Alliance for Clean Energy 2020 ). Numerous environmental laws are supportive of innovative approaches that can effectively minimize CFA production and promote its recycling or use as a more environmentally friendly alternative (Khatri and Rani 2008 ).

China's rapid economic development has caused serious environmental pollution and resource waste, such as heavy metal pollution (Zhou and Wang 2019 ), sand storms (Li et al. 2018 ), haze (Sun et al. 2016 ), etc. With the growing awareness about environmental protection, the Chinese government adopted a series of tough environmental legislation in 2013, 2015, and 2016 to avoid pollution, including the national strategy to reduce air, water, and soil pollution. On the one hand, the act's implementation has imposed a significant burden on the cement sector (Hu et al. 2018 ), and several small and medium-sized cement manufacturing firms have been compelled to halt operations to comply with new environmental rules. On the other hand, with the demand for stronger environmental rules, it is more necessary to handle the problem of CFA pollution. Therefore, the harmless and efficient use of CFA needs further research.

1.3 CFA utilization

Annually coal consumption in the thermal power industry surpasses 4100 Mt (Chen et al. 2022a ), resulting in annual CFA output of roughly 620 Mt (Mushtaq et al. 2019 ; Luo et al. 2019 ). The according quantity of CFA produced is projected to expand more as power consumption rises. CFA, being the major solid waste product from coal-fired power stations, accounts for a considerable fraction of solid waste released globally today, giving it a high potential for utilization (Yao et al. 2015 ). However, the degree of comprehensive coal fly ash utilization remains at a “low-grade” level for quite a while. In this regard, the coal fly ash use rate for China was 70.1%, India was 43.9%, and the US was 56% (Fig.  1 ) (Valeev et al. 2022 ).

figure 1

Adapted with permission (Valeev et al. 2022 )

Indicators for the generation and disposal of CFA in various countries.

In recent years, there has been growing global attention towards the comprehensive utilization of CFA, leading to an increase in the utilization rate of coal fly ash. One application is the inclusion of CFA as an additive to different kinds of construction supplies to boost their strength (Teixeira et al. 2022 ), including sintering bricks (Gupta et al. 2019 ), concrete (Ragipani et al. 2021 ), cement (Teixeira et al. 2019 ), and mine backfilling (Cavusoglu et al. 2021 ). At present, new ways of using CFA with high additional value utilization are being developed gradually. For instance, CFA can be utilized as a potential resource since it includes iron ore (Nyarko-Appiah et al. 2022 ), mullite (Chen et al. 2022b ), and quartz (Ma et al. 2021 ). Recovery of useful substances from CFA can save production expenses, safeguard mineral resources, reduce contamination, and preserve the ecosystem (Huang et al. 2020 ). As a result, it is critical to extract high additional value components from CFA to achieve efficient use of resources.

1.4 Separation technology of elements in the CFA leachate

The composition of CFA varies from different origins. CFA can be divided into high alumina fly ash, high iron fly ash and common fly ash. The Fe 3 O 4 content of high iron CFA can reach 49 wt%, which is a good raw material for iron extraction (You et al. 2019 ). Fe, a major component in CFA, can adversely affect the selective recovery of target metals. It is important to remove iron for the recovery of valuable metals. Ti is an associated element in the leaching of valuable metals. It is a waste of resources if Ti is not recovered.

The extraction of Al, Fe, Ti and other valuable metals from CFA has been extensively studied. The whole extraction process is carried out in two steps: firstly, the CFA leachate is obtained and then the metal, oxide or hydroxide is extracted from the CFA leachate (Shi et al. 2020 ). CFA leachate can be extracted from CFA using the acids (Shi et al. 2020 ), alkali (Su et al. 2011 ), alkaline-acid combination (Ma et al. 2019 ), or ammonium methods (Xu et al. 2021 ), where all of these methods have been extensively investigated. Electrolytic (Shi et al. 2021 ), precipitation (Zhang et al. 2018b ), extraction (Wang et al. 2020b ) or biological (Fan et al. 2019 ) methods are commonly used for the extraction of metals, oxides, or hydroxides from CFA leachate. For example, iron in CFA leachate can be extracted by adding oxalic acid (Hu et al. 2017 ), microorganisms (Kim et al. 2004 ) or P507 (Wang et al. 2020c ). Then, carbonization (Cao et al. 2021 ), electrolysis (Shi et al. 2020 ) or pyrolysis method (Bai et al. 2011 ) can be applied to extract aluminum from leachate. At the same time, Ti is extracted mainly by hydrolysis with the addition of strong bases, ammonia, NaCO 3 and other reaction products (Ma et al. 2021 ). However, the extraction of Al, Fe and Ti from CFA leachate is a complex and lengthy process, which consumes a lot of energy and causes secondary pollution.

The increase in global CFA production is a serious environmental issue, and improper disposal can cause severe damage to public health and the natural environment. In recent years, the recovery of valuable metals from CFA becomes very valuable as mineral resources decline and demand continues to increase, and is currently a challenging topic for international research.

2 Results and discussion

2.1 cfa as an alternative to bauxites at china alumina refineries.

China emits around 50 Mt of high-alumina CFA yearly, the alumina levels of which can exceed 50 wt%. Long-lasting hoarding has resulted in the squandering of aluminum resources (Wang et al. 2019 ). At the moment, bauxite is the primary raw material source for alumina manufacturing (Chen et al. 2022c ). China's alumina manufacturing capacity has topped 50% of global total output, but due to a severe scarcity of bauxite resources and a relatively low proportion of high-quality ore, the yearly import of bauxite has overtaken the output (Chao et al. 2022 ). Fine-grained CFA can be used as a raw material for the production of the aluminum industry, and is widely and inexpensive (Valeev et al. 2022 ). Therefore, as a result, making rational use of current bauxite resources and aggressively exploring possible alternative bauxite mineral resources is important for the long-term development of China's alumina sector.

2.2 Composition of CFA and CFA leachate

Table  1 displays the concentration of some major oxides found in CFA. However, it does not provide information on the lower mass proportion elements such as La, Ce, Nd, Ga, and Li. Nonetheless, it is worth noting that these elements are often present in CFA, even though they are not specifically mentioned in the table.

As presented in Table  2 , the research on leaching targets included common metals and rare elements. Aluminum, iron extraction from CFA is a common practice due to their economic value and their significant proportion in CFA (Wang et al. 2020c ). Regarding titanium, lanthanum, cerium, neodymium, gallium, lithium, and other elements, despite their relatively low percentage in CFA, their extraction is worthwhile due to their rarity and high value in various applications (Rezaei et al. 2022 ). The target components in CFA can be leached or eliminated, but other elements will always be leached. This phenomenon has little influence on the overall removal of elements in CFA but has a substantial impact on the purity of the extracted target elements. As a result, in the case of valuable element extraction, a suitable leaching agent or a feasible and efficient leaching method, if we want to achieve a high selectivity for the target element, is needed.

The common processes used to leach target metals from CFA are acid leaching or activation by roasting of CFA mixed with alkalis. Yang et al.( 2021 ) conducted leaching experiments on high-alumina fly ash using sulfuric acid at room temperature, and it was found that the leaching effect of Fe and Ti was poor, and Ti was more difficult to leach. Ma et al. ( 2021 ) used a mixture of H 2 SO 4 and NH 4 HSO 4 as a leaching agent, along with microwave-assisted roasting, and the leaching rates of Al and Ti were 82.4% and 55.6%, respectively, under the optimal conditions. Fang et al. ( 2023 ) mechanically activated the mixture of CFA and Na 2 S 2 O 7 and then added Na 2 S 2 O 8 for pressurized leaching, and the leaching rate of Al was 95.58%, which reached a high level. CFA was mixed with Na 2 CO 3 , calcined at 800 °C for 2 h, and then leached with hydrochloric acid at concentrations of 34.2 and 30.7 g/L for aluminum and iron, respectively (Yan et al. 2016 ).

A great deal of research has been carried out on different processes for the extraction of metals and significant results have been obtained, while some special methods exist. Using the above documented processes and methods it is possible to leach one or more elements simultaneously and then extract them with good economic benefits.

2.3 Developing technologies to extract valuable metals from CFA leachate

A giant quantity of CFA containing heavy metals will reason significant environmental harm. CFA provides advantages for both the economy and the environment when it is used to extract titanium, iron, and alumina. Acid, alkali, and other techniques are commonly employed for the extraction of valuable components from CFA. Electrolysis, precipitation, extraction and biological methods are used to extract valuable metals from CFA leachate.

2.3.1 Electrolytic method

The electrochemical method is a kind of hydrometallurgy. Electrochemical methods are considered to be a promising method to combine with renewable resources to achieve a sustainable recovery process for metals (Kim et al. 2021 ). Electrodeposition is a simple and widely used method for modulating product nucleation, growth, morphology and composition during the electrolysis process (Hussein et al. 2020 ; Shi et al. 2022 ). The electrodeposition method enables the separation and recovery of the desired metals from multicomponent mixed solutions by setting key parameters according to the reduction potential of the component metals (Liu et al. 2017 ). During electrolysis, the anode loses electrons and an oxidation reaction occurs, and the cathode gains electrons and a reduction reaction occurs. The equation of the reaction occurring in an acidic solution is as follows:

Anode reactions:

Cathode reactions:

Chemical reactions:

Alumina, iron, and titanium were simultaneously separated from CFA at the same time using an electrolysis–hydrolysis process (Shi et al. 2022 ). The techniques for this study involved two steps: leaching of the target elements from the CFA, followed by successive extraction of Ti, Fe, and Al 2 O 3 from the leachate.

2.3.1.1 Obtaining leachate from coal fly ash

In this first stage, CFA leachate is obtained from CFA, including the baking process and leaching processes (Shi et al. 2020 ). The reaction equation during the baking process can be represented as follows:

After baking, all the clinkers are dissolved in varying quantities of deionized H 2 O for 10 min at 95 °C and 400 rpm for the leaching procedure. Filtration is used to separate the leachate and CFA residue to produce leachates of varying concentrations. The produced soluble compounds (Fe 2 (SO 4 ) 3 , Al 2 (SO 4 ) 3 , and Ti(SO 4 ) 2 ) and a slightly soluble component (CaSO 4 ) were ionized during this leaching process, as Eqs. ( 10 )–( 13 ) states.

2.3.1.2 Sequential extraction of titanium, iron, and alumina from coal fly ash leachate

The method for extracting alumina from CFA by electrolysis–hydrolysis is proposed. Ti(OH) 4 , Fe, and Al(OH) 3 were extracted successively from the coal fly ash extract, consisting of two electrolysis phases. The separation of Ti(OH) 4 and Fe from the CFA leachate is the initial phase of the electrolysis process. During electrolysis, Fe can be produced at the cathode, as Eq. ( 14 ) shows.

Hydrolysis can produce Ti(OH) 4 , as Eq. ( 15 ) shows.

Following the elimination of titanium and iron in the initial phase of electrolysis, the leachate of coal fly ash was diluted to an Al 3+ concentration of 0.05–0.40 M in the next phase of electrolysis to obtain Al(OH) 3 on the cathode (Eq. ( 16 )).

This task involves two electrolysis phases, as illustrated in Fig.  2 . The initial stage of electrolysis involved a hydrolysis procedure to recover heat and form the leachate containing Ti(OH) 4 precipitate. During this stage, Fe was removed from the cathode. In the subsequent phase of electrolysis, following the preceding process, Al(OH) 3 was recovered from the cleaned coal fly ash leachate. The focus of this research is on the electrolysis–hydrolysis process (red part in Fig.  2 ) and the mechanics of the electrolysis–hydrolysis process are depicted in Fig.  3 .

figure 2

Flowchart for extraction of titanium, iron, and alumina from CFA (Shi et al. 2022 )

figure 3

Adapted with permission (Shi et al. 2022 )

Proposed mechanism of the electrolysis–hydrolysis process.

This research involves two stages of electrolysis, and the results of these two phases were evaluated at the cathode. During electrolysis, Fe and Al 2 O 3 were produced at the cathode. The cathode reaction is primarily responsible for the formation of iron and alumina precipitates. The primary molecules and ions in the coal fly ash leachate were Al 3+ , Fe 3+ , \({\text{Ti}}{\text{(OH)}}_{3}^{+}\) , and H 2 O, according to the findings of iron speciation at various pH levels.

The stated electrolysis–hydrolysis process offers significant advantages over existing technologies. Firstly, the stated electrolysis–hydrolysis technique mentioned above allows for the simultaneous recovery of Fe, Ti(OH) 4 , and Al(OH) 3 from the same solution. Secondly, this approach may create Fe and Al(OH) 3 selectively by altering the charge sequence of ions during the electrolysis process without the need for additives. Thirdly, the stated technique efficiently recovers heat from titanium. Additionally, the stated approach is non-polluting and does not emit hazardous gases. Furthermore, this technology allows for the simultaneous extraction of Fe, Ti(OH) 4 , and Al(OH) 3 from CFA leachate at a single location. Nieto et al. ( 2019 ) discovered that the cost of electricity generated by photovoltaic power is decreasing, further reducing the overall cost of implementing this technology. As a result, this research offers an alternative and effective approach for extracting Ti, Al 2 O 3 , and Fe from CFA leachates.

2.3.2 Precipitation method

The precipitation method, being a more traditional and extensively studied approach, is relatively simple to operate. However, it requires the use of significant amounts of strong acids and bases during the production process, necessitating equipment with high corrosion resistance. Over the years, research efforts have aimed not only at enhancing the yield of valuable elements but also at continuously optimizing operating conditions and the utilization of agents in order to minimize environmental impact and improve overall efficiency.

Wang et al. ( 2014 ) proposed a new technology for NH 4 HSO 4 mixed roasting to extract Al 2 O 3 from coal fly ash (Fig.  4 ). This process includes baking, aluminum precipitation, alkali dissolution of aluminum residue, carbonization decomposition, and calcination. Under the optimal conditions, the extraction rate of Al 2 O 3 reaches more than 90%, and 99% of α-Al 2 O 3 products are finally obtained. Equations ( 17 )–( 23 ) shows the baking process principle of this method.

figure 4

Flowsheet of ammonium hydrogen sulfates inter process (Wang et al. 2014 )

High aluminum CFA mixed with NH 4 HSO 4 at 400 °C:

The sintered clinker was leached with water and heated, and then NH 4 HCO 3 was added to precipitate Al and Fe in the leaching solution:

In the precipitation method, the separation of Fe and Al in NaOH solution with different solubility, and then the Al 2 O 3 product was achieved through carbon fraction and calcination. However, iron presents a significant challenge as a strong interfering contaminant, as it can adversely affect the quality of the α-Al 2 O 3 product. Therefore, efficient separation of iron from aluminum is crucial to ensure high-quality α-Al 2 O 3 production. To separate aluminum and iron, the dissolution of Al(OH) 3 in NaOH solution can be employed. The dose of NaOH (solid) can be estimated based on the Al concentration in the mixture of Al(OH) 3 and Fe(OH) 3 precipitation. The alkali dissolution process was examined at a mass ratio of 1:1–1:5 of Al(OH) 3 to NaOH. Heat the sodium hydroxide (solid) and 250 mL deionized water mixture to a temperature range of 25–99 °C. When the temperature is reached and maintained constant, the mixture of precipitates is added to the NaOH solution. Continuous stirring is applied during this period, followed by filtration of the mixture. The resulting filtrate is the NaAl(OH) 4 solution, while the residue consists of the deposit of Fe(OH) 3 .

In this process, the following reaction could occur, as shown in Eq. ( 24 ):

Single-factor tests were conducted to establish three crucial parameters, including temperature, the ratio by mass of Al(OH) 3 to NaOH, and heat preservation time.

By heating the NaAl(OH) 4 solution, the temperature is reached 25–99 °C. CO 2 at a gas flow rate of 20–100 mL/min was injected into the solution at the chosen temperature. The solution in this reaction undergoes agitation and is then filtered under air pressure. The resulting filter cake consists of Al(OH) 3 precipitation, while the filtrate is a Na 2 CO 3 solution that may be subjected to causticization by the addition of CaO. The following Eqs. ( 25 ) and ( 26 ) describe the chemical reactions occurred during this process:

Carbonation breakdown required two critical steps. The first was the neutralization reaction between NaOH with CO 2 , and the second step was the Al(OH) 3 precipitation procedure. Single-factor tests were used to investigate three essential parameters: temperature, CO 2 gas flow rate, and holding time.

The carbonated solution was further utilized by adding it to lime milk for recycling. However, the ammonium hydrogen sulfate baking method has low energy consumption and cost, but the process is relatively complex. During the baking process, the release of NH 3 occurs, and the material recycling efficiency is low.

It is a brand-new processing method that has been designed and thoroughly studied to extract Al and Ti from CFA (Ma et al. 2021 ). In this study, the roasting process used earlier was modified to microwave heating method, and H 2 SO 4 and NH 4 HSO 4 solutions were used as extractants. Compared to conventional acidic baking procedures, this approach improved the Al and Ti extraction efficiencies while reducing energy use and gas emissions. The proposed flowchart for the method of extracting Al and Ti from CFA in this work is shown in Fig.  5 . The first stage of the process facilitated the transfer of Al and Ti to the aqueous solution with the aid of a microwave and water leaching. To break down the CFA during the baking process, a solution of H 2 SO 4 and NH 4 HSO 4 was chosen. After cooling at a low pH, Al 3+ was then preferentially precipitated from the leach liquor by alum (NH 4 Al(SO 4 ) 2 ·12H 2 O) precipitation. The iron in solution is reduced from Fe 3+ to Fe 2+ using iron powder, and TiO 2+ is precipitated by a neutralization reaction.

figure 5

Proposed flowchart for recovering Al and Ti from CFA (Ma et al. 2021 )

Al 3+ , TiO 2+ , and certain contaminants including Na + , Ca 2+ , and Fe 3+ were present in the final leach solution. Due to the strong temperature dependence of the water solubility of NH 4 Al(SO 4 ) 2 ·12H 2 O, the recovery of Al 3+ from the leaching solution can be achieved through alum precipitation using NH 4 Al(SO 4 ) 2 . This precipitation process can be carried out under low pH conditions. The relevant reactions involved in this process are described by Eqs. ( 27 ) and ( 28 ).

The major goal of the conventional extraction procedure is to recover aluminum from CFA by decomposing the stable mullite phase using acid or alkali techniques (Valeev et al. 2022 ). Despite having considerable economic importance, the presence of iron and silicon compounds in CFA has typically been ignored in recent studies. Alkali desilication, carbonation, and acid leaching were combined to create a cascade extraction process (Zhao et al. 2023 ) that can effectively separate and recover all aluminum, silicon, and iron compounds from CFA. Activation of aluminum, acidic leaching, and Fe/Al deposition make up the four main components of the cascade extraction process used by the CFA, resulting in the simultaneous recovery of various resources (Fig.  6 ). Prior to adding Ca(OH) 2 to the dedicated unit's supernatant to produce CaSiO 3 , alkali leaching was employed to disilicate the raw CFA. The objective was to release silicon species and the corresponding reaction is shown in Eq. ( 29 ).

figure 6

Adapted with permission (Zhao et al. 2023 )

Schematic diagram of cascade extraction process for comprehensive utilization and resource recovery of CFA.

The desilication supernatant is treated with Ca(OH) 2 , and the CaSiO 3 crystals are recovered in such a way that lye consumption and waste liquor outflow are reduced. To convert mullite to the nepheline phase, the dedicated CFA was activated by carbonate calcination, increasing the acid-leaching dissolving efficiencies of Al 2 O 3 and Fe 2 O 3 to 90.4% and 92.3%, respectively. Additionally, acid leaching transformed the silicious components in activated CFA into 93.9% pure silicic acid. Fe(OH) 3 and Al(OH) 3 products with purities of 70.6% and 90.8% were produced using stepwise precipitation. The produced CaSiO 3 , silica gel, Fe(OH) 3 , and Al(OH) 3 can all be used again as flame retardants, and the recovered Al(OH) 3 can be transformed into NaAlO 2 for the removal of chloride from saline wastewater. Without producing solid waste, the cascade extraction of CFA is both ecologically friendly and economically advantageous.

2.3.3 Extraction method

The extraction method is to add a second solution to the original solution so that the solute in the original solution into another solution due to the difference in solubility, thus concentrating the original solution. The key to using solvent extraction is to select a suitable extraction agent. Acid dissolution is the extraction of Al 2 O 3 from CFA compared with the pre-silica-alkali lime sintering method, which greatly reduces the discharge of waste residue.

Ding and Zhang ( 2017 ) used hydrochloric acid to leach CFA with the relevant reactions of Eqs. ( 30 ) and ( 31 )

Selecting the extractants to separate the ferric chloride and aluminum chloride. P204-kerosene extractant, P204 is extractant, kerosene is diluent, V p204 : V kerosene  = 3:2, the ratio of organic phase to the aqueous phase is 1:1, extraction time is 20 min, medium speed stirring, the extraction rate of iron can reach 94% (the concentration of hydrochloric acid is 0.1 mol/L). Extraction conditions: at normal temperature, the concentration of hydrochloric acid concentration is 3 mol/L, and iron concentration of 5 g/L for extraction. Then an aluminum chloride solution is obtained, which can react with concentrated ammonia water, as Eq. ( 32 ) shows:

The obtained aluminum hydroxide precipitation was subjected to multiple washes to remove the ammonium chloride solution. Then, the ammonium chloride was decomposed at a high temperature to recycle the hydrochloric acid. Aluminum hydroxide was then roasted to obtain alumina. The individual products can be recovered separately and HCl can be reused in this method. This study presents a new technology for alumina production through CFA extraction.

2.3.4 Biological method

Bioleaching technology, which utilizes acids produced by microbial metabolism, prevents the generation of more solid waste during the extraction process and plays an important role in the cost-effective recovery of valuable metals from CFAs. In bioprocessing, bacterial microorganisms are used as catalysts to promote leaching of metals either directly or indirectly. The process is usually applied to low-grade sulfides because the microorganisms utilize the low solubility metal sulfates as an energy source to metabolically generate H 2 SO 4 , which can be used in the leaching of metals (Rasoulnia et al. 2021 ). Seidel et al. ( 2001 ) pointed out that most bacterial microorganisms usually colonize at low pH, and therefore, the slow growth of bacteria in alkaline species such as CFA results in low leaching efficiency of the target elements. However, additional energy can be provided by the addition of monomeric sulfur to improve leaching efficiency (Seidel et al. 2001 ). Seidel et al.( 2001 ) performed batch experiments in which Fe and Al 2 O 3 were extracted by suspending 10% CFA in a sulfur-containing thiobacillus oxidans inoculum and incubated for 21 days, with recoveries as high as 25% and 22%, respectively. It was found that the precipitation of CaSO 4 interfered with the attachment of the cells to the sulfur particles, thus slowing down the growth rate of the cells. Pretreatment of CFA with HCl to remove CaO had no significant effect, resulting in, low alumina selectivity and slow leaching kinetics. Fan et al. ( 2019 ) first activated CFA using Na 2 CO 3 roasted at 850 °C for 2 h. CFA was then mixed with pyrite (sulfur source) and pH adjusted to 1.5–2.5 with H 2 SO 4 . Mesophilic thiobacillus ferrooxidans was used as a source of pyrite oxidation, resulting in the production of H 2 SO 4 and Fe 3+ (Eqs. ( 33 )–( 35 )). After 12 d and 8 d of incubation, aluminum and cerium recoveries were 91.2% and 63.4%, respectively.

3 Future research prospects

Extraction techniques for elements in CFA leachate

CFA is a potential supplementary source of bauxite. The low and diverse content of most of the elements and the difficulty of extracting multiple elements simultaneously from the leachate pose some challenges for extraction. Therefore, a method that can extract multiple elements simultaneously needs to be investigated further.

Efficiency, sustainability and environmental benefits of different methods of extracting valuable metals

CFA stacking can pose a serious threat to the environment and human health, as well as being a waste of resources. The extraction of valuable metals in CFA which has good environmental and economic benefits. Electrolysis is a cleaner method of extraction, and the use of wind and solar power to provide electricity makes the cost lower. It has good prospects for development. Biological methods also offer good environmental benefits, but have a long production cycle and should focus on the cultivation of more efficient bacteria in the future. Both chemical and extraction methods require secondary treatment of the extracted solution, which is more harmful and costly. Cleaner and more efficient additives are needed in the future.

4 Conclusions

CFA, a major solid waste generated by coal-fired power plants, poses a serious threat to the environment. The extraction of valuable metals can alleviate the resource crisis and environmental pollution. This study aims to introduce the basic physical and chemical properties of CFA, discuss its disposal policy, especially the recovery methods of valuable metals. Among the methods of CFA valence metals recovery, the precipitation method is more traditional and straightforward to operate but uses large quantities of strong acids and bases in the production process and requires high corrosion protection of the equipment. The extraction method offers high efficiency and easy product separation but involves a longer process and requires secondary treatment of the extracted solution. The electrolysis method, on the other hand, offers a clean, non-polluting, and cost-effective option, enabling the extraction of target elements from complex solutions. However, effective separation of target elements becomes challenging when their deposition potentials are similar. The biological method is also a method with good environmental benefits, but it has stringent system requirements and a long reaction cycle. It limits its industrial application. This study provides solutions to environmental problems that are important for the sustainable clean utilization of CFA and promoting a more sustainable future.

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Acknowledgements

This study was supported by Major science and technology projects of Gansu Province (22ZD6GA008, 22ZD6GA014). National Natural Science Foundation of China (52304368, 52164034). Science and Technology Project of Gansu Province (Postdoctoral project at the station) (23JRRA781, 23JRRA812). Science and Technology Project of Gansu Province (Special Project of Science and Technology Specialist) (23CXGA0068). The Tamarisk Outstanding Young Talents Program of Lanzhou University of Technology. The 74th batch of China Postdoctoral Science Foundation (Regional Special Support Program) (2023MD744218).

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Shi, Y., Jiang, F., Wang, R. et al. A mini review on the separation of Al, Fe and Ti elements from coal fly ash leachate. Int J Coal Sci Technol 11 , 24 (2024). https://doi.org/10.1007/s40789-024-00683-z

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Mini review article, toxicology, environmental chemistry, ecotoxicology, and one health: definitions and paths for future research.

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  • Département de Chimie, Université de Montréal, Montreal, QC, Canada

The definitions of toxicology, environmental toxicology, environmental chemistry, environmental risk, and ecotoxicology are closely related and sometimes used as synonyms, whereas One Health is a more recent, complementary concept. This contribution examines the origins of the usages of these terms, explores their interchangeability (whether appropriate or not), and proposes some paths to better define each. The usage of these terms is evolving, and current research and paradigms are progressing toward the integration of broader, more integrative perspectives, such as the One Health approach. One Health is a holistic approach that helps link and integrate work on environmental and human health impacts. Definitions and research should not necessarily strive to segregate human vs. environmentally focused work, and most of the problems are complex and interconnected. Future research endeavors and funding programs must better reflect the multidisciplinary nature of environmental toxicology, and more broadly, One Health research and environmental research must recognize the interrelationships of human health, environmental health, ecotoxicology, and a multitude of geochemical, microbiological, and ecological processes.

Toxicology is the science of poisons

The simplest definition of toxicology is that it is “the science of poisons” and hence evolved from Paracelsus, assuming that too much of anything can kill. In essence, much of toxicology is focused on finding the dose–response, i.e., which quantity of a component will elicit a biological response, what concentration is without effects, when does it seem positive (whether through a hormesis effect or not), when could it be negative, and a wide range of sublethal responses that culminate in evaluating when does the exposure kill or affect the organism. We must also consider the need for more nuanced responses as we rarely get a binary biological response to a given challenge. Organisms or systems will be affected differently in different contexts, and it is critical to improve how we report environmental toxicology data to improve reproducibility, credibility, and transparency ( Fleeger, 2020 ). This includes reporting the statistical significance of results, including error estimates of our toxicological assays and negative results (including a lack of toxic response), without limiting ourselves to testing for the significance of a null hypothesis ( Erickson and Rattner, 2020 ) and making sure to properly measure exposure and not presume that nominal additions represent actual concentrations.

Langman and Kapur have proposed that toxicology is multidisciplinary and developed into three specialized branches: environmental, clinical, and forensic ( Langman and Kapur, 2006 ). This context seems anthropocentric, and environmental toxicology was initially concerned primarily with environmental exposure from chemicals in the air we breathe, the water we drink, or the food we eat. In this definition, some of the work in environmental chemistry would feed into a component of environmental toxicology. Clinical toxicology was focused on potential adverse effects of chemicals that are intentionally administered for therapeutic purposes. Forensic toxicology is looking into the medicolegal aspects of chemicals and poisons and understanding what has happened.

A simple yet very effective definition is that “toxicology is the study of the adverse effects of chemical, biological, or physical agents on living organisms” ( Radenkova, 2008 ). This definition has a great advantage where it is not by itself anthropocentric and encompasses all living organisms and pretty much any form of agents that could potentially have negative biological impacts—thus going beyond the testing of the impact of a single chemical. Toxicology could then be divided into the toxicology of human health and environmental toxicology, encompassing all the organisms, entities, and systems that the environment is hosting. One must emphasize that in many ways, the toxicology of humans is easier to handle as it is focused on a single species and, for the most part, at the level of the individual, whereas environmental toxicology looks at the full breadth of biological organisms and must also consider ecotoxicological and ecological implications that move beyond the impacts on individuals and must integrate populational impacts ( Belden, 2020 ).

We tend to have higher concerns for human health than environmental health, and we devote much more resources to protecting the former over the latter. However, the processes and research are similar in terms of what is needed to understand how toxicants affect the homo sapiens species relative to how toxicity would be expressed in some of the more than 6,000 recognized mammal species (considering many that are now extinct) ( Burgin et al., 2018 ). Research needs to integrate greater complexity, such as mixtures of contaminants and how climate change may alter biological responses to exposures, and we must evaluate the impacts on different organisms, microbial processes, their interactions, or even on the integrity and balance of ecological systems.

Ecotoxicology, environmental toxicology, and environmental chemistry are intertwined

The concept of ecotoxicology has evolved from an early concept of the study of exposure pathways, uptake, and effects of chemicals on organisms, populations, communities, and ecosystems ( Connell et al., 1999 ). Vasseur et al. proposed an interesting storyline for the evolution of the concept of ecotoxicology ( Vasseur et al., 2021 ), with the initial use of the term “ecotoxicology” attributed to Jouany (1971) and phrased as “the study of the influence of nuisances on the relationship between an individual [species] and his [its] environment could simply be termed ecotoxicology” with “nuisances” defined as “harmful and inimical factors induced by humans” (translated from French) ( Vasseur et al., 2021 ).

This was paraphrased as “toxicology in an ecological perspective,” aiming to study the deleterious effects of chemical, physical, and biological agents on living organisms and the interrelations within communities and their interaction with the environment ( Vasseur et al., 2021 ). This vision is similar to Hodgson’s definition: “ Environmental toxicology is concerned with the movement of toxicants and their metabolites and degradation products in the environment and in food chains and with the effect of such contaminants on individuals and, especially, populations” ( Hodgson and Hodgson, 2004 ).

Leblanc has further defined environmental toxicology as the study of the fate and effects of chemicals in the environment (encompassing both naturally found chemicals (venoms or natural toxins) and those of anthropogenic origin) ( Leblanc and Hodgson, 2004 ). He also divided environmental toxicology into environmental health toxicology and ecotoxicology . Environmental health toxicology focuses on the adverse effects of environmental chemicals on human health, while ecotoxicology involves the study of the adverse effects of toxicants on a myriad of organisms that compose ecosystems, ranging from microorganisms to top predators ( Leblanc and Hodgson, 2004 ).

Early vocabulary for environmental toxicology and ecotoxicology could be considered synonymous or closely related, but they have a distinct difference from “toxicology,” which solely focuses on human health, while environmental toxicology and ecotoxicology deal with the effects on the environment and all of the species and ecosystems that could be impacted.

Moriarty mentioned that “ecotoxicology is concerned ultimately with the effects of pollutants on populations not individuals. Sublethal effects, and changes to the environment, can have a greater impact on population size than does acute toxicity” ( Moriarty, 1988 ), thus hinting at a more ecologically oriented definition of ecotoxicology. Chapman further emphasized that ecotoxicology stems from “ecological toxicology” and integrates ecology and toxicology. As such, it should be inspired from ecological risk assessment ( Chapman, 2002 ). He further emphasized that ecotoxicology’s “objective is to understand and predict effects of chemicals on natural communities under realistic exposure conditions” ( Chapman, 2002 ). Much of toxicological research work is focused on testing specific chemicals individually, while multiple contaminants are generally simultaneously present in the environment. Furthermore, critical ecological impacts are not always linked to exposure to a single toxic chemical as they are related to habitat loss, introduced species, nutrient enrichment, and global climate change ( Chapman, 2002 ).

Environmental impacts are multifaceted and difficult to assess in simple metrics. The tendency to recalculate everything in equivalence of tons of carbon dioxide is a good example of the weakness, albeit this is useful to compare the potential warming impacts of releases of methane relative to carbon dioxide or other gases. Using carbon dioxide equivalence is hardly appropriate to assess the endocrine disruption potential of pharmaceuticals, the problems caused by tons of plastic pieces affecting marine fauna, and the various toxicological effects caused by emerging contaminants in the environment. Ecotoxicology should be viewed as the portion of environmental toxicology that takes a holistic perspective to look at potential impacts, with special considerations to ecological impacts and disruptions of ecosystems, and “ecotoxicology” should not be focused on single-species testing of single toxicants (albeit such testing is certainly useful, they should be viewed as environmental toxicology work, not specifically ecotoxicological).

For a long time, toxicology focused on human health, with environmental toxicology work being segregated into other venues and endeavors. Nevertheless, this is evolving, and many of the impacts on human health can be traced back to a broader environmental issue having effects on other species or environmental processes. We must recognize that the environment as a whole, including humans, is a complex multi-component system and that Homo sapiens is but one of the many species that need to be protected.

One Health offers a holistic perspective

This is where the “ One Health ” approach, which recognizes that “the health of humans, domestic and wild animals, plants, and the wider environment are closely linked and interdependent,” shows that it is somewhat futile to deal separately with problems related to human health or to environmental health and that ultimately, all biological organisms are somewhat interdependent and interconnected ( Larsson et al., 2023 ). There is a plethora of definitions, but this version was proposed by the One Health High-Level Expert Panel ( WHO, 2023 ) from a quadripartite initiative of international agencies that adopted it: the Food and Agriculture Organization of the United Nations (FAO), the World Organization for Animal Health (OIE), the UN Environment Program (UNEP), and the World Health Organization (WHO). The current definition is as follows:

“One Health is an integrated, unifying approach that aims to sustainably balance and optimize the health of people, animals, and ecosystems. It recognizes that the health of humans, domestic and wild animals, plants, and the wider environment (including ecosystems) are closely linked and interdependent. The approach mobilizes multiple sectors, disciplines, and communities at varying levels of society to work together to foster well-being and tackle threats to health and ecosystems while addressing the collective need for clean water, energy, and air, safe and nutritious food, taking action on climate change, and contributing to sustainable development.”

This highlights that even from an anthropocentric point of view, we should put a lot of research efforts and corrective actions focused on the environment as it has significant impacts on humans and their health (however, we should not forget that the environment fully deserves to be protected for itself).

Moving forward for environmental toxicology research

Toxicology research must better integrate the One Health approach and realize that humans, farm animals, and wildlife are interconnected and further dependent on invisible microbiological organisms and complex ecosystem interactions. Albeit specific studies need a clear focus, the complexity, interdependence, and potential transferability of results must be considered when designing new experiments. This type of research also needs better recognition and better support by granting agencies—environmental toxicology and even more so “One Health” projects are, by definition, multidisciplinary and are often at the uncomfortable interface of sections, divisions, and sectors and, as a result, often more difficult to evaluate and fund through usual granting programs. In addition to being multidisciplinary and at the crossroads of different disciplines, it is also at the interface of fundamental and applied research and too often left aside—if the data are needed for regulatory agencies, granting agencies will be reluctant to fund the research, and if the data are deemed research-oriented, regulatory agencies then would want research granting agencies to fund it. One would think that being at the interface would prove easier to get the research funded, but in reality, it is often more difficult.

There should be more funding and professional support dedicated specifically to aid interdisciplinary research at the interface of disciplines and that focus on One Health—we need work that combines concepts and expertise in toxicology and chemistry to connect seemingly traditionally disparate research topics and draw conclusions on broader environmental and human health concerns and integrating risk assessment.

Funds for environmental toxicology research should be increased to better match the efforts dedicated toward human health because our lack of understanding of other environmental issues, whether from contamination or management problems, will ultimately come back to haunt the health of human populations. We must rethink how we design environmental research and make sure that toxicological work, whether focused on humans or other biological organisms, integrates the “One Health” approach and the complexity of the interactions among biological organisms and a very wide range of processes, whether microbial, biochemical, within the environment, or through an organism’s internal metabolic pathways, ecological interactions, and many others.

We must do a better job to assess the toxicological impacts of the combinations of chemical toxicants—both in developing better testing systems and better accounting for potential interactions and finding ways to integrate toxicant interactions into environmental quality guidelines. It will be even more complicated to model or account for interactions of chemical toxicity with other “non-chemical” challenges (pathogens, invasive species, global warming, eutrophication, rising sea levels, shorter snow/ice cover, loss of habitat, etc.).

Even privately funded toxicological research is problematic as companies are reluctant to publish or release information that could potentially reduce the competitiveness of the products they commercialize. Even when they do release some information, the capacity to selectively pick and choose what they release and what information they retain greatly reduces the trust we can give to such partial results ( Sauvé, 2019 ). Health and environmental agencies should refuse to use any data that are not peer-reviewed and not available for outside experts to use and criticize. Companies seeking approbation for new chemicals (or legacy products seeking reapproval or derogatory measures) should provide data based on impartial work that must be peer-reviewed and publicly available (this research could still be funded by private interest but at arm’s length and without any say on how the studies are designed, how the results are interpreted, and whether or not the data should be published).

Finally, we must further improve how we perform toxicological testing, integrate more chronic exposure and nonlethal effects, and further develop our tools to test for endocrine disruption; there is certainly a lot of work left on how to best correlate environmental concentrations, chemical speciation, body burdens, and actual toxicological effects.

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Hodgson, E. (2004). “Introduction to toxicology,” in A textbook of modern toxicology . Editor E. Hodgson (Hoboken, NJ, USA: Wiley-Interscience ), 3–12.

Jouany, J. (1971). Ecologie et nuisances. Actual Pharm. 69, 12–22.

Langman, L. J., and Kapur, B. M. (2006). Toxicology: then and now. Clin. Biochem. 39 (5), 498–510. doi:10.1016/j.clinbiochem.2006.03.004

Larsson, D. G. J., Gaze, W. H., Laxminarayan, R., Topp, E., and Amr, (2023). AMR, one health and the environment. Nat. Microbiol. 8 (5), 754–755. doi:10.1038/s41564-023-01351-9

Leblanc, G. (2004). in Basics of environmental toxicology . Editor E. Hodgson (Hoboken, NJ, USA: Wiley-Interscience ), 463–478.

Moriarty, F. (1988). Ecotoxicology. Hum. Toxicol. 7 (5), 437–441. doi:10.1177/096032718800700510

Radenkova, J. (2008). Historical development of toxicology. Acta Medica Bulg. 35 (1), 47–52.

Sauvé, S. (2019). Pesticide research must stay transparent and independent. Conversat.

Sauvé, S., Barbeau, B., Bouchard, M. F., Verner, M.-A., and Liu, J. (2023). How should we interpret the new water quality regulations for per- and polyfluoroalkyl substances? ACS ES&T Water 3 (9), 2810–2815. doi:10.1021/acsestwater.3c00217

Vasseur, P., Masfaraud, J.-F., and Blaise, C. (2021). Ecotoxicology, revisiting its pioneers. Environ. Sci. Pollut. Res. 28 (4), 3852–3857. doi:10.1007/s11356-020-11236-7

Who, (2023). WHO one health high-level expert Panel (OHHLEP). https://www.who.int/groups/one-health-high-level-expert-panel .

Keywords: environmental toxicology, ecotoxicology, One Health, definitions, research funding, environmental chemistry

Citation: Sauvé S (2024) Toxicology, environmental chemistry, ecotoxicology, and One Health: definitions and paths for future research. Front. Environ. Sci. 12:1303705. doi: 10.3389/fenvs.2024.1303705

Received: 28 September 2023; Accepted: 02 February 2024; Published: 19 March 2024.

Reviewed by:

Copyright © 2024 Sauvé. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

*Correspondence: Sébastien Sauvé, [email protected] a

‘Bigger than the Super Bowl’: Americans are spending big on eclipse tourism

Eclipse viewing parties are everywhere, from alpaca farms in texas to ski slopes in vermont.

what is a mini review in research

For those hoping to catch a glimpse of the total solar eclipse in April, there’s no shortage of options. Six Flags Over Texas is hosting a “Solar Coaster” viewing party. Holland America has a 22-day Solar Eclipse Cruise. And after filling up one path-of-totality flight, Delta Air Lines has added a second, promising unadulterated views from “extra-large” windows.

But almost everything is sold out.

The total solar eclipse, which will be visible from more than a dozen states , is fueling a small spending boom across the nation. Hotels are booked, campgrounds are full and rental cars are nowhere to be found around the April 8 event. States including Arkansas and Indiana are expecting record-breaking travel and spending.

“This is likely going to be the single biggest tourism event we’ve ever had,” said Michael Pakko, an economist at the University of Arkansas at Little Rock, who is projecting a statewide windfall of $105 million. “Obviously, it’s going to be a short duration — a long weekend — but for that concentrated period of time, it’s going to be a very big deal.”

It’s also rare. A total solar eclipse — in which the moon completely covers the sun for a few minutes, creating a pitch-black “path of totality” — is a once-in-a-lifetime opportunity for many. It’s been 99 years since New York had one, and 218 years for Ohio. This time around, the path of totality will stretch from Texas to Maine, covering parts of several states, including Missouri, Kentucky and Pennsylvania, along the way.

The boost to those local economies could be significant. Texas, which is expected to get the biggest influx of visitors, could pocket $428 million in eclipse-related spending, according to Ray Perryman, an economist in Waco. Johnson County, Ind., is forecasting as much as $25 million in extra revenue, while Rochester, N.Y., expects about $10 million.

Americans emerged from the pandemic ready to shell out, especially for memorable experiences. The total solar eclipse is the ultimate example, with the next one being two decades away for most of the United States. In all, as many as 3.7 million people are expected to travel to the path of totality for the eclipse, according to estimates from geographer Michael Zeiler.

Robust consumer spending — which has continued despite high prices — has kept the economy chugging along at a time when many had feared a recession. Spending on international travel and live entertainment surged nearly 30 percent last year, five times the rate of overall spending growth, as Americans splurged on European vacations and Taylor Swift concerts. Eclipse travel is expected to fuel another mini spending boom.

Indiana, for example, is preparing for a record 500,000 visitors — more than seven times the attendance at the 2012 Super Bowl in Indianapolis, according to Amy Howell, vice president of tourism at the Indiana Destination Development Corporation.

State officials in transportation, natural resources and homeland security have been meeting for months to iron out logistics, such as port-a-potty availability and traffic plans, she said. Some schools are closed that day, and garbage collection will be on hold.

“We know how to host big events, but this is huge — bigger than the Super Bowl and the Indy 500 put together, plus the state fair, which is 18 days long,” she said. “We’re expecting to have all of those visitors in one day.”

A thousand miles away, Steven Wright is making similar calculations at his Vermont ski resort. The 900 rooms at Jay Peak have been sold out since last spring, with the earliest eclipse-related reservations arriving five years ago. In all, some 8,000 people are expected to take part in the resort’s festivities, which start at $365 for two people.

A Pink Floyd cover band will play the “Dark Side of the Moon” album right as the eclipse begins. Also unfolding then: a 50-person wedding on the mountain’s peak.

“It’s an awful lot of buildup for a few minutes,” said Wright, the property’s general manager.

These types of viewing parties are cropping up everywhere, including at alpaca farms in Texas, Hot Springs National Park in Arkansas and the Indianapolis Motor Speedway . For those seeking a more exclusive experience, T.E.I. Tours and Travel is offering private path-of-totality flights starting at $9,750 per person.

The Planetary Society, a nonprofit headed by Bill Nye “the Science Guy,” is hosting a 1,000-person camp-out at a wedding venue in Fredericksburg, Tex. There will be astronomy talks in the glass chapel and telescopes and games on the lawn. Tickets are $325 a pop, and so far the attendee list includes people from nearly all 50 states, plus Finland, Japan and Spain.

“We are huge space nerds, and seeing a total solar eclipse, it stirs something deeply profound inside of us,” spokeswoman Danielle Gunn said. “People travel all over the world to see this — and once you see one total eclipse, you get why.”

This will be the third total eclipse for Nazmus Nasir. He and his wife began planning their trip from Boston to Marble Falls, Tex., seven years ago, after seeing the last one in Tennessee. They nabbed an Airbnb in 2022, as soon as bookings went online, and plan to drive the 30 hours to central Texas in a rented minivan with their 11-month-old son.

“I don’t think words can describe how it feels to be under totality,” said Nasir, a 34-year-old software engineer and amateur astro-photographer. “Nothing really prepares you for it. I knew what was happening, but my brain still couldn’t believe what I was looking at.”

That’s the experience Otilia Vindfeldt Jensen is hoping for. She and her husband are flying from Denmark to Mesquite, Tex., for the town’s “ Solar Rodeo .”

“The way people talk about it, there’s so much awe and they find it difficult to find words for what they’ve seen,” she said. “I really want to be a part of that.”

Jensen, a 31-year-old clinical researcher, and her husband talked about it for over a year, she said, before finally booking $1,500 flights last month. The couple plans to spend three weeks in the United States, most of it driving across Texas.

The rush of visitors is expected to give many small towns and rural areas an unprecedented boost. In Greenville, Maine, the Lodge at Moosehead Lake has been booked for months in anticipation of the eclipse. But people are still calling — even offering to pay for a spot on the inn’s back deck or its parking lot, owner Beverly Burgess said.

Burgess has turned down those requests and is instead focused on figuring out how to manage the crowds. She’s loading up on extra food, has a generator on hand in case the power goes out and has hired a parking attendant for the day of the eclipse, when Greenville’s population is projected to swell from about 1,400 to more than 30,000.

“This is certainly more people than we’ve ever seen before,” she said. “It’s a lot for this little town.”

Julieann Taylor, 66, is determined to see the eclipse — and has hotel rooms booked in three states, just in case. The retired nurse, who lives in northwest Indiana, is planning to drive to Arkansas with her husband, sister, adult son and dachshund, Dieter. But if that falls through or the weather is bad , she’s also reserved rooms closer to home, in Indianapolis and Findlay, Ohio.

Taylor saw the partial eclipse in 2017, but wishes she’d experienced totality. “In that moment, I said, ‘If we’re still alive, we’re going to go to the next one,’” she said. “This is probably our last chance in our lifetime, so we’re going to make the effort.”

Taylor has spent about $2,500 on hotel bookings and says she can barely contain her excitement. Her husband, though, is less enthused: “He’s just not into this at all,” she said. “He’s complaining, ‘Why are we going? We could be going somewhere fun other than Arkansas.’”

In any case, Taylor is powering on. She’s poring over satellite maps to find the best viewing areas and filling a Yeti cooler with water, fruit and cheese sticks in case they’re stuck on the road for long stretches.

“If we miss it,” she said, “it won’t be for a lack of trying.”

what is a mini review in research

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Creating a Corporate Social Responsibility Program with Real Impact

  • Emilio Marti,
  • David Risi,
  • Eva Schlindwein,
  • Andromachi Athanasopoulou

what is a mini review in research

Lessons from multinational companies that adapted their CSR practices based on local feedback and knowledge.

Exploring the critical role of experimentation in Corporate Social Responsibility (CSR), research on four multinational companies reveals a stark difference in CSR effectiveness. Successful companies integrate an experimental approach, constantly adapting their CSR practices based on local feedback and knowledge. This strategy fosters genuine community engagement and responsive initiatives, as seen in a mining company’s impactful HIV/AIDS program. Conversely, companies that rely on standardized, inflexible CSR methods often fail to achieve their goals, demonstrated by a failed partnership due to local corruption in another mining company. The study recommends encouraging broad employee participation in CSR and fostering a culture that values CSR’s long-term business benefits. It also suggests that sustainable investors and ESG rating agencies should focus on assessing companies’ experimental approaches to CSR, going beyond current practices to examine the involvement of diverse employees in both developing and adapting CSR initiatives. Overall, embracing a dynamic, data-driven approach to CSR is essential for meaningful social and environmental impact.

By now, almost all large companies are engaged in corporate social responsibility (CSR): they have CSR policies, employ CSR staff, engage in activities that aim to have a positive impact on the environment and society, and write CSR reports. However, the evolution of CSR has brought forth new challenges. A stark contrast to two decades ago, when the primary concern was the sheer neglect of CSR, the current issue lies in the ineffective execution of these practices. Why do some companies implement CSR in ways that create a positive impact on the environment and society, while others fail to do so? Our research reveals that experimentation is critical for impactful CSR, which has implications for both companies that implement CSR and companies that externally monitor these CSR activities, such as sustainable investors and ESG rating agencies.

  • EM Emilio Marti is an assistant professor at the Rotterdam School of Management (RSM) at Erasmus University Rotterdam.
  • DR David Risi is a professor at the Bern University of Applied Sciences and a habilitated lecturer at the University of St. Gallen. His research focuses on how companies organize CSR and sustainability.
  • ES Eva Schlindwein is a professor at the Bern University of Applied Sciences and a postdoctoral fellow at the University of Oxford. Her research focuses on how organizations navigate tensions between business and society.
  • AA Andromachi Athanasopoulou is an associate professor at Queen Mary University of London and an associate fellow at the University of Oxford. Her research focuses on how individuals manage their leadership careers and make ethically charged decisions.

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THE400 Mini review: "your dad's first Atari PC is back"

THE400 Mini sitting on cartridges

GamesRadar+ Verdict

The Atari 400 Mini serves up cute, convenient access to the microcomputer's best capers, making for an adorable homage to a historic system. The mini plug and play console itself is going to look fantastic sitting on your shelf or desk, and while it could have gone further in terms of interactive design, attention to detail and accurate software emulation make for a tremendous trip through videogame history.

Adorable, authentic design

25 built-in games

Save and rewind functions

USB controller compatibility

Lacks interactive design features

Why you can trust GamesRadar+ Our experts review games, movies and tech over countless hours, so you can choose the best for you. Find out more about our reviews policy.

In many ways, microcomputers like the Atari 400 are my Roman empire. The THE400 Mini has made that fact even clearer to me, as the experience of flicking through my personal collection of old microcomputer games and trying them out on the plug and play homage became a hyper fixation during testing. I can’t say any other mini console has managed to steal several hours of my time at once quite like this one, and that in itself is a testament to its capabilities.

Coming in at $119.99 / £99.99, there’s no getting round the fact that the THE400 is an expensive mini retro console . For that reason, I was expecting quite a lot from PLAION and Retro Games Ltd’s collab, especially since better known systems have released in the past with a lower MSRP. Thankfully, this latest recreation strikes a balance between style and substance that will be universally appreciated, whether you’re a vintage gamer or someone who casually appreciates old classics. 

Arguably, systems like the THE400 are helping to keep the mini console scene alive. It feels like only yesterday the NES Classic Edition sparked a plug and play craze, with a craving for tiny systems starting to fizzle out as the 2010s came to a close. Unlike those popular platforms, getting hold of an original Atari 400 is pretty pricey, so you could argue gamers will benefit more from this microcomputer than something like the Dreamcast 2. Am I going to regret saying that? Maybe, but as someone who has most old consoles to hand, Sega ’s ‘90s hardware is a lot easier to deal with in 2024 than the ageing ‘70s microcomputer. 

Specs 

Hand holding THE400 Mini console next to plants

Before we dive into how freaking adorable the THE400 is, let’s run over its specs. Since we’re talking about a plug and play designed to emulate 8-bit computer games from over 40 years ago, it makes sense that it’d opt for a ARM Cortex-A7 processor, 256MB RAM, and 128MB flash memory. Keeping the hardware featherlight means you can power the console using 5V 1A via USB-C, all while still enjoying 720p visuals and plenty of USB ports.

In terms of IO, you’ll have HDMI out and five USB-A ports at your disposal, four of which live up front as “controller jacks”. Unlike the Atari 2600+ that landed in November 2023, THE400 doesn’t feature a cartridge slot or any means to directly run your physical collection, which perhaps makes sense given that it’s smaller than some old cart boxes. Am I slightly disappointed that I can’t whack some of my obscure favorites into the top of this mini PC? Slightly, but we’ll get onto why there’s enough going on software wise to make up for it soon.

In the box, you’ll also get a replica of the OG joystick dubbed the THECXSTICK, and it’s not just a USB version of the controller bundled with the Atari 2600+. Instead, it wields some extra buttons that make navigating the OS possible, like a home option and quick access to the settings menu. It’s fine, especially if you’re looking for a completely authentic experience, but I’d be lying if I said I didn’t immediately reach for an alternative controller. FIY, most options will play ball, providing you’ve got enough buttons on the pad to suit relevant games and parts of the software.  

At this stage, I pretty much expect every mini console to look like the hardware it's based on. So, it’s not entirely shocking that the THE400 resembles a shrunken Atari 400 computer, but I’m still impressed with the detailing included with the model. The keyboard, while purely for aesthetic purposes, features the same sort of texture as the membrane pad on the original system, and it’s even got the same side function buttons with a red LED sandwiched in between. 

For convenience, the power button and jack have been moved to the back. Doing so makes practical sense from both a design and usage standpoint, but I would have been impressed if the original layout was retained. That aside, every ridge and vent is exactly where it should be on the mini’s beige body, including that shuttle-style cartridge door that rounds off the ‘70s futurism vibes. The catch? The hatch is just for show, and that’s the part I’m really upset about.

I could live with the keyboard not being functional, as that’s been the story since the C64 Mini. However, I feel like I’ve been spoiled in terms of interactive design traits by the likes of the Sega Genesis Mini and PC Engine Mini, both of which feature tiny novelties like cartridge flips, removable doors for expansion ports, and even lock mechanisms that would have held Hu Cards on the original PC Engine in place. 

I’m not in the business of designing tiny retro consoles, but if I was the big cheese in charge of this project, I’d have used the cartridge door to hide a USB port. Being able to flip the lid up and physically plugging something in (a USB stick rather than a cart in this case) would have perfected the experience in terms of physical authenticity. I’d have even settled for a little easter egg of some kind within the bay, but alas, it’s simply a pretty plastic mold. 

Features  

THE400 Mini console sitting on cartridges on woodgrain desk

Retro Games Ltd knows how to pack features into a mini system, and the THE400 doesn’t skimp on software perks. Having 25 games baked in is already a massive boon, but the operating system providing access pulls off being functional and fun. Jaunty chiptune music accompanies a carousel style menu-system that makes diving into each included outing easy, with artwork adding that extra level of nostalgic pizazz. 

I’m a big fan of the presentation here, particularly when it comes to the synopsis blurb included with every built-in adventure. That said, this console is compatible with more than just the Atari 400, and for whatever reason, the menu doesn’t tell you which console each game belongs to. For example, I managed to confuse myself when playing Berzerk, as I almost thought there was a microcomputer release I hadn’t played. It turns out that it’s actually the Atari 5200 version, but there’s no way of telling from the menu screen.

Small labelling omissions aside, there are a bunch of handy options in the settings menu that are worth using. For instance, if you love the look of old CRT TVs, you’ll be able to toggle scanlines, and you can even choose between a 4:3 aspect ratio or a ‘pixel perfect’ mode that remedies artefacts. Those tweaks are accompanied by a bunch of fun borders that will mask off the vertical letterboxing, just in case you can deal with your entire display not being filled. 

THE400 Mini connected to Dough Spectrum monitor with game save menu on screen

As for in-game tricks, there’s a save system and a 30 second rewind mode, so you’ll have some modern comforts to help overcome those ‘80s arcade levels of difficulty. However, arguably the biggest game-related feature is the ability to run your own ROMs using a USB stick, something that’s normally omitted from mini consoles. As I already touched on, this lil PC runs more than just Atari 400 romps, boasting support for XL and XE series as well as the Atari 5200, meaning you’ll have a massive selection of games to try out (providing you’ve got your own digital backups).

While it’s a bit niche, it’s also possible to load up BASIC using the THE400. I’d say this is an essential feature, as it’ll help place you in the shoes of someone trying to program back in the ‘80s. I’ve always wanted to give using the old OS a proper whirl, and while I do think old keys are charming, I’d much rather use a modern gaming keyboard at my desk to rattle out lines of code. 

Games 

I’m going to avoid getting into an argument about the best Atari games, but there’s a respectable collection included with the THE400. Classics like Berzerk, Boulder Dash, Lee, Miner 2049er, and Centipede are all present, and there’s a few I’d personally never heard of (Flip and Flop won me over instantly by featuring a kangaroo called Flip and a Monkey called Mitch). 

THE400 built-in game list:

THE400 Mini main game menu with Airball on screen

  •  Airball 
  •  Asteroids 
  •  Basketball 
  •  Battlezone
  •  Berzerk
  •  Boulder Dash 
  •  Bristles
  •  Capture the Flag
  •  Centipede
  •  Crystal Castles
  •  Elektraglide
  •  Encounter!
  •  Flip and Flop
  •  Henry’s House
  •  Hover Bovver
  •  Lee (aka, Bruce Lee)
  •  M.U.L.E.
  •  Millipede
  •  Miner 2049er
  •  Missile Command
  •  O’Riley’s Mine
  •  Star Raiders II
  • The Seven Cities of Gold
  •  Wavy Navy 
  •  Yoomp!    

Naturally, there are a bunch of games by publishers that are missing, particularly on the 5200 front. But, let’s be real, the chances of Donkey Kong and Mario Bros ending up on this thing were next to none. Yet, I was holding out for some of the more distinctly Atari outings, like Robotron: 2084, Defender, and Pacman, so some grumbling about the included list is allowed. 

Of course, part of the appeal of the THE400 is being able to load in your own ROMs, and doing so is a sure fire way to expand the experience. I know I’ll personally be on a mission to collect and back up more Atari 5200 carts, as we didn’t actually get that specific console in the UK. Sure, I could go try and get a hold of the original hardware, but that’d likely mean importing the system, and I feel like this plug and play can adequately fill the gap.

Performance 

THE400 Mini with Pacman on screen

Since it’s 2024, I’d half expect my toaster to be able to run games from 40 years ago. Still, it’s important to place systems like the THE400 under the microscope, as for over $100, I’m expecting a flawless experience. And, as far as I can tell, the mini machine runs everything flawlessly, even going as far as to mimic bugs that also happen on my Atari 600XL.

For context, it’s an Atari 600XL I’m using as a comparison point, as I sadly don’t own the exact system the THE400 is based on. Both are effectively still the same machine, and the games I’m using for testing are physical carts I own that work on both versions. My benchmark selection includes a few personal favorites, like Caverns of Mars, Mountain King, and Turmoil, as I’m pretty familiar with how they should look and sound.

Again, I didn’t pick up on anything that sounded off or felt laggy, and each game looks pretty spectacular thanks to the THE400’s clean 720p signal. My 600XL has a composite out port, so it doesn’t look quite as bad as the Atari 400’s RF output. Nevertheless, we’re talking about a less than stellar analogue signal versus modern HD visuals, and I know what I’d pick any day.

I was also pleasantly surprised by the fact I could swap out the old school Atari joystick for a very slightly newer school 8bitdo Neo Geo pad, with buttons instantly self-mapping to system functions and specific game buttons. I haven’t tried too many different pads yet, but I’m willing to bet quite a few will work seamlessly with this console. Alternatively, you could pick up one of the new pads designed with the mini in mind. 

Should you buy the THE400 Mini? 

THE400 Mini next to original cartridges on woodgrain table

It’s safe to say that the THE400 is a must have mini for Atari fan, serving as an adorable homage to a historic system. Its price tag isn’t exactly casual friendly, and it caters more to players who are curious about the realm of 8-bit gaming. Simply put, your dad's first PC is back in a big (small) way, and that’s sure to delight those of you old enough to remember the platform and enthusiast collectors alike. 

If we end up with a different version of the THE400, I’d love to see the precious 80s PC time capsule gain some more physically interactive elements, as it’d help paint a perfect picture of what it was like to use the microcomputer. I can think of a few tiny gamers in my family who think DVDs are a novelty, never mind a spaceship you jam cartridges into, so it’s the one improvement I can think of that’d elevate this mini to full score greatness.

How I tested the THE400 Mini

For a week, I swapped out my Nintendo Switch for the THE400, using my spare time to explore the mini console's built-in library of games as well as run my own collection via USB. During that time, I also set up my Atari 600XL microcomputer using an OSSC upscaler to compare its visuals against THE400's emulation, checking aspects like latency and audio for imperfections. 

If you'd like to learn more about how we test mini consoles and other retro gaming gadgets, swing by our GamesRadar+ Hardware Policy to learn more.

Looking for something more portable? Check out the best gaming handheld options for system's that'll run your retro collection. Alternatively, take a peek at the best gaming monitors and best gaming TVs for screens that'll bring the classics to live.

Phil Hayton

I’ve been messing around with PCs, video game consoles, and tech since before I could speak. Don’t get me wrong, I kickstarted my relationship with technology by jamming a Hot Wheels double-decker bus into my parent’s VCR, but we all have to start somewhere. I even somehow managed to become a walking, talking buyer’s guide at my teenage supermarket job, which helped me accept my career fate. So, rather than try to realise my musician dreams, or see out my University degree, I started running my own retro pop culture site and writing about video games and tech for the likes of TechRadar, The Daily Star, and the BBC before eventually ending up with a job covering graphics card shenanigans at PCGamesN. Now, I’m your friendly neighbourhood Hardware Editor at GamesRadar, and it’s my job to make sure you can kick butt in all your favourite games using the best gaming hardware, whether you’re a sucker for handhelds like the Steam Deck and Nintendo Switch or a hardcore gaming PC enthusiast.

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IMAGES

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COMMENTS

  1. PDF How to Write a Mini Literature Review

    Do Review Papers Have Abstracts? • Yes, but there are two kinds of abstract: - Informative: Used for research reports. They summarize the study, including the findings and conclusions. - Descriptive: Used for reviews. They summarize the subject of the review and the approach the reviewer has taken in his or her coverage of the subject.

  2. Writing a Mini-Review: A Crucial Task in PhD Research

    What is a mini-review. A mini-review (like a book review) is simply the careful summary of a particular scholar's work. It is usually a 2-3 page articulation of a work's main thesis, supporting arguments and major points. After this is complete, a final step in the mini-review is to take the content of 1-2 pages and shrink that down to one ...

  3. Mini-review

    Mini-reviews provide a concise summary of a specific research topic or field relevant to Bioelectronic Medicine. They put previous research and findings in context and present current developments in a critical and focused manner. Key aims of mini-reviews are to provide coverage of mature or emerging subjects, evaluations of progress in ...

  4. Ten Simple Rules for Writing a Literature Review

    A full review will have the advantage of more freedom to cover in detail the complexities of a particular scientific development, but may then be left in the pile of the very important papers "to be read" by readers with little time to spare for major monographs. There is probably a continuum between mini- and full reviews.

  5. 10 Tips: How to Write a Scientific Mini Review 2024

    The research question should be clear, concise, and specific. It should address a gap in knowledge or a problem that needs to be solved in the field. 3. Conduct a comprehensive literature search. To write a scientific mini review, you need to conduct a thorough literature search to identify relevant research articles.

  6. Introduction to Mini-Review

    Mini-reviews summarize the most salient concepts related to a topic while reporting the most relevant and current findings. Their short format allows easy digestion of those topics in the literature so that more practitioners can benefit from them. In the field of geriatric orthopedics and rehabilitation, the need is ever greater for the mini ...

  7. PDF Mini Review format for the Fundamentals of 21st Century ...

    Mini Reviews are peer-reviewed, have a maximum word count of 3,000 and may contain no more than 2 Figures/Tables. Authors are required to pay a fee (B-type article) to publish a Mini Review. The collection of review articles from this Research Topic will serve as literature references to a new course on the Principles of Neuroscience.

  8. Mini-Reviews

    Criteria. Mini-reviews are summaries of recent insights or advances in specific research areas within the scope of AMB Express. A key aim of mini-reviews is to evaluate recent progress in a specific field, put research findings published in the preceding years into context and explain future directions for research as appropriate.

  9. Evidence informing practice: introducing the mini-review

    A mini review highlights or summarizes a particular emerging area of interest in a simple, quick and easy way by showing potential gaps in literature and areas of research development (Hanafin et ...

  10. How to Write a Literature Review

    Show how your research addresses a gap or contributes to a debate; Evaluate the current state of research and demonstrate your knowledge of the scholarly debates around your topic. Writing literature reviews is a particularly important skill if you want to apply for graduate school or pursue a career in research. We've written a step-by-step ...

  11. Mini review

    The Mini review article type denotes a review with a more concise format compared with a standard review article. Preparing your manuscript. Title page. The title page should: ... Nature Research Editing Service이용시 10% 할인을 요청하기 위해서는 ...

  12. Mini-Review

    Mini-reviews covers abreast of advances and trends in biomedical research. This type applies same format as standard Review articles, but main body text should not exceed 2,000 words with no more than 100 references. ... "What is the impact of factor X on subject Y: A systematic review" or for non-clinical or non-research studies: a description ...

  13. How to write a good scientific review article

    A good review article provides readers with an in-depth understanding of a field and highlights key gaps and challenges to address with future research. Writing a review article also helps to expand the writer's knowledge of their specialist area and to develop their analytical and communication skills, amongst other benefits. Thus, the ...

  14. Mini-Review

    The Journal of Physiological Sciences publishes peer-reviewed Mini-reviews, based on the principles and theories of modern physiology. Mini-reviews should be no longer than 3,000 words excluding References, providing a short overview of a particular subject. Mini-reviews are usually solicited by the editor. In the process of online submission ...

  15. Mini review

    Criteria. Mini Reviews are concise articles aiming to provide an insight into timely and relevant topics. The aim of these is to act as a 'state-of-the-art' overview of key areas for the journal's readers. These should cover three aspects - the basis of the subject, the research undertaken so far, and what crucial next steps need to be taken.

  16. How do I write a short commentary/mini-review for my accepted ...

    1 Answer to this question. Answer: Firstly, congrats on your paper being accepted! So, it appears that the journal editor wants you to prepare the short commentary or mini-review to talk about or promote your paper once it is published. This should be a fairly easy task, given that you have prepared the article and have in-depth knowledge of ...

  17. Types of Reviews

    This site explores different review methodologies such as, systematic, scoping, realist, narrative, state of the art, meta-ethnography, critical, and integrative reviews. The LITR-EX site has a health professions education focus, but the advice and information is widely applicable. Types of Reviews. Review the table to peruse review types and ...

  18. Literature review as a research methodology: An ...

    This is why the literature review as a research method is more relevant than ever. Traditional literature reviews often lack thoroughness and rigor and are conducted ad hoc, rather than following a specific methodology. Therefore, questions can be raised about the quality and trustworthiness of these types of reviews.

  19. Mini Reviews

    This mini-review focuses on recent topics on basic research in hypertension from the several points of view. The recent topics indicate that interorgan communication has received particular attention.

  20. Mini-review What is new and relevant for sequencing-based microbiome

    The aim of this review is therefore to provide a general introduction to the technical opportunities and challenges of microbiome research, as well as to make experimental and bioinformatic recommendations, i.e. (i) to avoid, reduce and assess the confounding effects of sample storage, nucleic acid isolation and microbial contamination; (ii) to ...

  21. How Long Mini Literature Review for your Short or Long Essay

    The length of your literature review should be between 3 and 4 pages - double-spaced. Generally, a mini literature review should be around 5 pages depending on the type of project or the length of the project. The maximum length of a Mini Literature Review article, including references, should be less than 5 pages.

  22. Mini Literature Review: A new type of literature review article

    Mini Literature Review: A new type of literature review article. Dr. Lorna Collins, Editor-in-chief. Every PhD scholar is required to complete a literature review as part of their research study. However, relatively few of these reviews are published. In an effort to increase the number and quality of literature reviews being published in the ...

  23. A mini review on the separation of Al, Fe and Ti elements ...

    The electricity demand is increasing rapidly with the development of society and technology. Coal-fired thermal power plants have become one of the primary sources of electricity generation for urbanization. However, coal-fired thermal power plants produce a great amount of by-product coal fly ash every year. Coal fly ash disposal in landfills requires a sizable space and has negative ...

  24. Research Roundup: How the Pandemic Changed Management

    The review highlights the numerous ways in which employees, teams, leaders, organizations, and societies were impacted and offers lessons for managing through future pandemics or other events of ...

  25. Research: How Women Can Build High-Status Networks

    Summary. Despite the potential career benefits of building high-status networks, research has long shown that women face greater obstacles in establishing these networks compared to men. The ...

  26. Frontiers

    The definitions of toxicology, environmental toxicology, environmental chemistry, environmental risk, and ecotoxicology are closely related and sometimes used as synonyms, whereas One Health is a more recent, complementary concept. This contribution examines the origins of the usages of these terms, explores their interchangeability (whether appropriate or not), and proposes some paths to ...

  27. The total solar eclipse is driving a mini spending boom

    A total solar eclipse — in which the moon completely covers the sun for a few minutes, creating a pitch-black "path of totality" — is a once-in-a-lifetime opportunity for many. It's been ...

  28. Creating a Corporate Social Responsibility Program with Real Impact

    His research focuses on how companies organize CSR and sustainability. ES Eva Schlindwein is a professor at the Bern University of Applied Sciences and a postdoctoral fellow at the University of ...

  29. THE400 Mini review: "your dad's first Atari PC is back"

    THE400 Mini is an exceptional homage to Atari's classic microcomputer, and it'll provide convenient access to multiple 8-bit retro game libraries.