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With more than 5 million dissertations and theses ,  ProQuest Dissertations & Theses  Global  is the most comprehensive collection of dissertations and theses in the world. PQDT Global connects scholarship from 4,100 universities, diverse voices, ideas, and perspectives can be viewed within a singular global context.

ProQuest Dissertations & Theses Global  is the official dissertations repository for the Library of Congress. It   includes access to international scholarly works from USA, UK to Continental Europe, Africa to India and China. Our partnerships with universities have been key to expanding the reach and impact of graduate works. By working together, the visibility of both the institution and its PhD dissertation production are enhanced in the worldwide research community. In 2017, ProQuest joined forces with China Academic Library and Information System (CALIS) to provide first-ever global access to abstracts of the graduate output of 80 Chinese Universities.

ProQuest Dissertations & Theses Global  is updated weekly and features 24 indexed and searchable fields, including full text searchability for the entire text of full-text dissertations. Around, 200,000 dissertation works added annually.

ProQuest Dissertations & Theses Global  allows students, faculties, and research scholars:

• To Check the Uniqueness of Dissertations Titles : T o find titles related to their scholarly interests and to make sure that their proposed thesis or dissertation topics have not already been written about
• Global Network of Knowledge: PQDT Global connects scholarship from 4,100 universities globally, diverse voices, ideas, and perspectives. PQDT Global database gives instant access to high-quality, multidisciplinary research materials to Uncover new ideas and innovations with more confidence and effectiveness.
• Equitable Search Results: A dedicated ProQuest editorial team reviews every title and applies enhancements to create equitable discoverability across subjects and institutions, consistently delivering quality, relevant results
• Connections to Insights: Each full text dissertation in PQDT Global is fully searchable providing an unparalleled resource for text and data mining analysis making connections that generate new insights.
• The Undiscovered: PQDT Global helps the students and research scholars to uncover the “undiscovered research” insight and intelligence which is often overlooked because the majority of scholarly research is never formally published into books and articles. Rich with new and niche information on every topic imaginable, dissertations are a wealth of potential insights for all levels of researchers.
• Citations Connection - Citation Connections deliver Foundational Research and Similar Dissertations documents. User can extract Dissertation citations which are cross-linked, searchable, and offering a “ready-made” list of sources on a topic .

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ProQuest™ Dissertations & Theses Citation Index

The ProQuest™ Dissertations & Theses Citation Index (PQDT) is the world's most comprehensive curated collection of multi-disciplinary dissertations and theses, offering over 5.5 million records representing dissertations and theses from thousands of universities around the world.

Extending from they early 1600s to present, PQDT coverage is broadly multidisciplinary and includes foundational research in the life sciences, mathematics, computer science, engineering, social sciences, and humanities. Within dissertations and theses is a wealth of scholarship, yet it is often overlooked because most go unpublished.

Key Features

The ProQuest Dissertations & Theses Citation Index will be a standalone database and included in an All Databases search by default. WoS users also have filter options available in each search so that they can search broadly and then narrow focus on a particular collection, subject category, document type, etc. If a user wants to locate dissertations or theses specifically, they can also search of ProQuest Dissertations & Theses Citation Index only.

Standalone and aggregated search

PQDT is included in ALL Database search and can also be searched as a unique collection.

Track citation activity in Web of Science Core Collection

Dissertations and theses that have been cited by Web of Science Core Collection records will include a citation count and a link to the citing articles.

Claim dissertation or theses to a Web of Science Researcher Profiles

Researchers can manually claim their dissertation or thesis to their Web of Science Researcher Profile and make it part of the public view of their profile.

Links to Full Text of dissertations and theses on ProQuest platform

Institutions that subscribe to PQDT Global on the ProQuest platform will be able to link directly to their entitled full text.

Note: ProQuest Dissertation and Theses Citation Index will be released to customers in two phases. Phase 1: In July 2023, ProQuest Dissertations and Theses Citation Index will go live with metadata records for 5.5+ million dissertations and theses. The records will not include cited reference indexing, which means that functionality such as Related Records and Cited References lists and associated navigation will not display. Phase 2: In late 2023, Linked Cited References lists and Related Records will be released to fully connect dissertations to the Web of Science citation network. If you have any questions regarding PQDT entitlement or functionality, please contact the Web of Science support team .

Dissertation Essentials

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Writing a dissertation is a serious and lengthy task, with so many steps to complete, revise, and perfect. The NU Dissertation Template provides a lot of helpful info, but students still often have many questions and need additional guidance.  Seeing completed examples helps a lot.  This guide will help you to access completed NU dissertations in the NU library to inspire and inform your own research and writing.

Accessing completed NU dissertations can help students with the following common issues:

• Finding examples/inspiration for methodology, focus, topic, and other “big-picture” concerns.
• Identifying specifics on length/depth/breadth of each section of the dissertation.
• Seeing examples of formatting in context, such as APA style headings.
• Understanding specific dissertation committee expectations.
• Finding new references on completed reference lists.
• Supporting your peers’ scholarly work by reading their dissertations and participating in the scholarly community.

It’s easy to locate completed NU dissertations in the NU Library!

• Log into NCUOne and click on the NU Library link  - https://resources.nu.edu
• Access the pull-down menu on left entitled “Research Resources” and click on “Find Dissertations”.
• Access the pull-down menu for Vendors/Providers in the top middle of the page and click on “ProQuest”.
• Click on ProQuest Dissertations & Theses @ Northcentral University .

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Once you have located the published NU dissertations, you can narrow your search, just like you would with any other library resource.  Try the following strategies to start:

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• Dates (Tip – Consider narrowing your search to only the past 5 years).
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• Committee members.
• References/citations you plan to use.
• Just like with any other library resource, you can perform an advanced search using a combination of these strategies.
• In addition to the NU dissertations, you may want to consider accessing non-NU dissertations via the general ProQuest link on the pull-down menu (see steps outlined above).  This can be helpful if your topic is extremely specific, if you are very far along in your work, and if you need to broaden your search.

Now that you have accessed the completed NU Dissertations in the NU Library, the possibilities to inspire and guide you in your own work are endless.  Be excited that one day soon, your own dissertation will be published in the NU library!

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Dissertation/Thesis Correction Policy

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To make corrections to a published dissertation/thesis, ProQuest requires the following:  

• A letter or email from the graduate office at your university, giving authorization for the changes to be made to your published dissertation/thesis.
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• A correction fee in the amount of $47.00. Credit card payment may be made over the phone with a customer service representative once university approval and the corrected document have been submitted.

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Some results uranium dioxide powder structure investigation

• Processes of Obtaining and Properties of Powders
• Published: 28 June 2009
• Volume 50 , pages 281–285, ( 2009 )

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• E. I. Andreev 1 ,
• K. V. Glavin 2 ,
• A. V. Ivanov 3 ,
• V. V. Malovik 3 ,
• V. V. Martynov 3 &
• V. S. Panov 2  

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Features of the macrostructure and microstructure of uranium dioxide powders are considered. Assumptions are made on the mechanisms of the behavior of powders of various natures during pelletizing. Experimental data that reflect the effect of these powders on the quality of fuel pellets, which is evaluated by modern procedures, are presented. To investigate the structure of the powders, modern methods of electron microscopy, helium pycnometry, etc., are used. The presented results indicate the disadvantages of wet methods for obtaining the starting UO 2 powders by the ammonium diuranate (ADU) flow sheet because strong agglomerates and conglomerates, which complicate the process of pelletizing, are formed. The main directions of investigation that can lead to understanding the regularities of formation of the structure of starting UO 2 powders, which will allow one to control the process of their fabrication and stabilize the properties of powders and pellets, are emphasized.

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Andreev, E.I., Bocharov, A.S., Ivanov, A.V., et al., Izv. Vyssh. Uchebn. Zaved., Tsvetn. Metall. , 2003, no. 1, p. 48.

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Elektrostal’ Polytechnical Institute (Branch), Moscow Institute of Steel and Alloys, ul. Pervomaiskaya 7, Elektrostal’, Moscow oblast, 144000, Russia

E. I. Andreev

Moscow Institute of Steel and Alloys (State Technical University), Leninskii pr. 4, Moscow, 119049, Russia

K. V. Glavin & V. S. Panov

JSC “Mashinostroitelny Zavod”, ul. K. Marksa 12, Elektrostal’, Moscow oblast, 144001, Russia

A. V. Ivanov, V. V. Malovik & V. V. Martynov

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Correspondence to K. V. Glavin .

Additional information

Original Russian Text © E.I. Andreev, K.V. Glavin, A.V. Ivanov, V.V. Malovik, V.V. Martynov, V.S. Panov, 2009, published in Izvestiya VUZ. Poroshkovaya Metallurgiya i Funktsional’nye Pokrytiya, 2008, No. 4, pp. 19–24.

About this article

Andreev, E.I., Glavin, K.V., Ivanov, A.V. et al. Some results uranium dioxide powder structure investigation. Russ. J. Non-ferrous Metals 50 , 281–285 (2009). https://doi.org/10.3103/S1067821209030183

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Published : 28 June 2009

Issue Date : June 2009

DOI : https://doi.org/10.3103/S1067821209030183

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• nuclear fuel
• uranium dioxide
• uranium protoxide-oxide
• crystallite
• agglomerate
• conglomerate
• surface morphology
• ADU-ammonium diuranate
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• Victor Mukhin

Victor M. Mukhin was born in 1946 in the town of Orsk, Russia. In 1970 he graduated the Technological Institute in Leningrad. Victor M. Mukhin was directed to work to the scientific-industrial organization "Neorganika" (Elektrostal, Moscow region) where he is working during 47 years, at present as the head of the laboratory of carbon sorbents.     Victor M. Mukhin defended a Ph. D. thesis and a doctoral thesis at the Mendeleev University of Chemical Technology of Russia (in 1979 and 1997 accordingly). Professor of Mendeleev University of Chemical Technology of Russia. Scientific interests: production, investigation and application of active carbons, technological and ecological carbon-adsorptive processes, environmental protection, production of ecologically clean food.   

Title : Active carbons as nanoporous materials for solving of environmental problems

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