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Dissertations / Theses on the topic 'Uranite'

Author: Grafiati
Published: 4 June 2021
Last updated: 27 July 2025

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1

Fernandes, Teresa. "Geochemical behaviour of uranium and thorium in the waste of a uranium conversion facility." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/460838.

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Los residuos contenidos en las balsas de decantación de la planta de conversión de uranio de Comurhex - Malvési, Francia, han sido caracterizados con el objectivo de investigar el comportamiento de uranio y torio en este entorno específico. El residuo es una sucesión de estratos heterogénea que comprende una mezcla de los efluentes del proceso con el suelo (que han tenido su origen en la re-construcción de los diques de las balsas, el efluente de lodo, y los antiguos desechos de las minas de azufre y de flotación de residuos sobre las que las balsas han sido localizadas. El efluente de l
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2

Gronowski, Adrian. "Effects of uranium mining on groundwater - Geochemical modeling of aqueous uranium speciation due to changing redox conditions." Thesis, KTH, Mark- och vattenteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-161064.

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As a consequence of rising uranium prices an interest in Sweden’s U deposits has emerged. This raises the important question of the possible environmental impacts of U mining operations. One of the most significant and serious issues is the contamination of groundwater by U following mining activities. The processes of uranium release and subsequent transport in groundwater is closely tied to its aqueous chemistry i.e. aqueous speciation, adsorption to mineral surfaces and dissolved organic carbon (DOM). The chemical parameters exerting the most control over these processes are pH and redox po
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3

Achin, Isabelle. "Caractérisation des sources d'uranium à l'Archéen : mécanismes de genèse des gisements d'uranium les plus anciens (3,0 à 2,2 Ga) et des préconcentrations uranifères paléoprotérozoïques." Thesis, Nancy 1, 2010. http://www.theses.fr/2010NAN10045/document.

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Les plus anciens gisements d’uranium connus sur Terre sont les gisements de type paléo-placer hôtes de conglomérats à cailloux de quartz d’âge compris entre 3,09 et 2,2 Ga. Ces gisements représentent les reliques de l’ancienne croûte continentale archéenne maintenant érodée. L’origine de leurs concentrations primaires, correspondant à des accumulations de grains détritiques d’uraninite, est toujours sujette à controverse et la nature et les processus de formation des roches sources archéennes demeurent incertains.Ce travail présente l’analyse minéralogique et géochimique détaillée des minérali
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4

Robit-Pointeau, Véronique. "Etude des phases néoformées lors de la dissolution du combustible nucléaire en condition de stockage géologique : influence des ions silicate." Paris 11, 2005. http://www.theses.fr/2005PA112330.

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Le combustible nucléaire usé en condition de stockage géologique peut s'altérer par oxydation locale à l'interface combustible/eau sous l'influence de la radiolyse alpha. Cependant l'environnement restera réducteur par le fort pouvoir tampon redox des matériaux de champ proche (produits de corrosion du conteneur, milieu géologique). Dans ces conditions, on admet généralement que l'uranium formerait des phases secondaires d'uranium (IV). La coffinite USiO4. N(H20) pourrait être une phase d'altération appropriée à considérer (relative abondance dans les réacteurs à fission naturels d'Oklo au Gab
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5

Tourneux, Jean-Christophe. "Complexes carbéniques nucléophiles de l'uranium." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112028/document.

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Les seuls complexes carbéniques stables (hors NHC) des métaux f présentent des groupes R2C(2-) comportant un ou deux atomes de phosphore en position alpha du carbone central. L’objectif de ce travail a été de développer la chimie des carbènes de l’uranium (métal 5f) avec le dianion C{Ph2P(=S)}2(2-) (SCS(2-)) afin d’étendre la chimie organométallique de cet élément à ses divers degrés d’oxydation (+3 à +6), et pour révéler l’effet des orbitales 5f sur la nature et la réactivité de la liaison double U=C.Nous avons tout d’abord isolé les réactifs M(SCHS) (M = Li et K) et montré le rôle du cation
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6

Silva, Márcio Luiz da [UNESP]. "Estudo hidroquímico e dos isótopos de urânio nas águas subterrâneas em cidades do Estado do Amazonas (AM)." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/102901.

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Made available in DSpace on 2014-06-11T19:32:18Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-06-23Bitstream added on 2014-06-13T19:02:50Z : No. of bitstreams: 1 silva_ml_dr_rcla.pdf: 21027584 bytes, checksum: 7cb732b23cad6eb774812ecce2087b54 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Este trabalho tem por objetivo investigar a hidroquímica elementar, assim como o comportamento geoquímico dos isótopos de 238U e 234U nas águas de subsuperfície em quinze cidades do estado do Amazonas, de maneira a proceder a caracterização de contaminantes ou poluentes q
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7

Nepali, Chandra Shekhar. "Phenomenological Predictions for Uranium + Uranium Collisions at RHIC." Kent State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=kent1207939432.

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8

Conde, Puigmal Marta. "Resistance to Mining. Enabling Factors and control of knowledge in uranium mining conflicts in Africa." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/328709.

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La resistencia a la minería no es una novedad y sin embargo, la extracción de recursos se ha ido expandiendo material y geográficamente durante los últimos 150 años, llegando a nuevas fronteras, moviendo cantidades más grandes de tierra y agua e impactando a más comunidades. Las resistencias que han surgido contribuyen cada vez más a la forma de la frontera de extracción siendo a su vez un factor importante en la política económica de la expansión minera. Así pues, es cada vez más crucial entender porque surge resistencia social a la minería y como está evolucionando. Esta tesis focaliza la
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9

LEITAO, JUNIOR CLAUDIO B. "Estudo dos parametros de processo da reducao do tricarbonato de amonio e uranilo a dioxido de uranio em forno de leito fluidizado." reponame:Repositório Institucional do IPEN, 1992. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10297.

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10

Östlund, Jacob, and Kristian Kierkegaard. "Uranium Mining Industry : -A valuation of uranium mining companies." Thesis, Jönköping University, JIBS, Accounting and Finance, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-927.

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<p>Background:</p><p>Over the last three years uranium prices have soard from US $14 per pound (lb) to the current price of US $120/lb and this rapid incline of the commodity have created a boom within the uranium prospecting and min-ing industry. There are currently 435 nuclear reactors all over the world and these reactors demand 180 millions of pounds of uranium each year to run at full production. Currently the uranium mining industry only sup-plies 110 million pounds of the demanded quantity. The remaining 70 mil-lion pounds are coming from secondary sources such as decommissioned nuclear
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11

Kweto, Bundjoko. "Recovery of uranium from uranium residue by alkaline leaching." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/40822.

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The purpose of this work was to recover uranium from residue originating from the production of molybdenum -99. Carbonate solutions containing hydrogen peroxide or oxygen gas as oxidants were used as leachants. Experimental parameters included: different peroxide and carbonate concentrations, dissolution time and temperature. Results indicate complete dissolution of the residue at 60 oC, after thirty minutes, in ammonium carbonate solution enriched with hydrogen peroxide. Almost two hours were needed to achieve the same extent in the presence of oxygen. The yield and rate of uranium ext
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12

Lundgren, Emil. "Preparation of uranium carbide through carbothermic reduction of uranium dioxide." Thesis, KTH, Fysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-149675.

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The project started with a preparatory literature study and thermodynamic consid- erations. The main purpose was to synthesise uranium carbide through carbothermic reduction. The synthesis method was developed through a serie of experiments. Ele- mental analysis for carbon, oxygen and nitrogen was performed on the product and modifcations were made to the method based on the results in the analysis. In addition, XRD was performed to complement the elemental analysis and obtain in- formation about the structure and phases present in the product. The purest product contained 1.9 wt. % oxygen, 1.
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13

Nicholls, Laura E. "Uranium silicate complexes as models for surface immobilised uranium catalysts." Thesis, University of Sussex, 2015. http://sro.sussex.ac.uk/id/eprint/58059/.

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Chapter 1 provides an insight into the current areas of research that could provide answers to the global energy problems outlined in Appendix A, namely the reductive functionalisation of carbon oxides and as an extension to this, the activation of other small molecules. The review predominantly concentrates on the chemistry of the 5f elements which already contain examples of reductive functionalisation of carbon oxides, albeit in homogeneous phase. In addition the chapter provides an overview of the current research in surface science and by extension, the development of molecular models tha
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14

Yakubu, Nuru A. "Biosorption of uranium." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/38200.

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15

Buckley, Denis. "Proton irradiated uranium." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/37955.

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16

Kovrugin, Vadim M. "Cristallochimie de nouveaux composés d’oxyde du Se4+ et du Se6+." Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10072/document.

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Ce manuscrit est consacré à la synthèse et la caractérisation de nouveaux matériaux d'oxyde à base de sélénium dans les états d’oxydation +4 ou +6. Les types structuraux rencontrés parmi les 33 oxy sélénites minéraux montrent une diversité structurale étonnante, et couvrent le champ des dimensionnalités 0D à 3D, offrant ainsi des potentialités inexploitées en termes des propriétés physiques. Cette thèse a visé la synthèse de l’étude de nouveaux composés du Se, en utilisant des méthodes de synthèse essentiellement inspirées des conditions de croissance des minéraux. Les informations basées sur
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17

Amaral, Janúbia Cristina Bragança da Silva. "Recuperação de tório e urânio a partir do licor gerado no processamento da monazita pela INB/Caldas, MG." CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2006. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=37.

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Este trabalho apresenta o desenvolvimento de um processo para extração simultânea de tório e urânio, pela técnica de extração por solventes, a partir do licor sulfúrico proveniente da lixiviação do minério de monazita realizado pela Industrias Nucleares do Brasil INB, unidade de Caldas MG. Na primeira etapa do estudo, investigou-se as variáveis de processo através de ensaios descontínuos para estabelecimento das melhores condições de operação. Na segunda etapa foram realizados experimentos contínuos de extração do tório e urânio com base nos resultados dos testes descontínuos, objetivando ot
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18

Silva, Márcio Luiz da. "Estudo hidroquímico e dos isótopos de urânio nas águas subterrâneas em cidades do Estado do Amazonas (AM) /." Rio Claro : [s.n.], 2005. http://hdl.handle.net/11449/102901.

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Orientador: Daniel Marcos Bonotto<br>Banca: Uriel Duarte<br>Banca: Francisco Yukio Hiodo<br>Banca: Flavio Juarez Távora<br>Banca: Elisabete Maria Pascholati<br>Resumo: Este trabalho tem por objetivo investigar a hidroquímica elementar, assim como o comportamento geoquímico dos isótopos de 238U e 234U nas águas de subsuperfície em quinze cidades do estado do Amazonas, de maneira a proceder a caracterização de contaminantes ou poluentes que possam estar afetando a qualidade dos recursos hídricos subterrâneos, bem como avaliar a potencialidade do uso dos isótopos naturais de urânio como traçadore
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19

Beeler, Benjamin Warren. "Atomistic investigations of uranium." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49055.

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Uranium (U) exhibits a high temperature body-centered cubic (bcc) allotrope that is often stabilized by alloying with transition metals such as Zr, Mo, and Nb for technological applications. One such application involves U–Zr as nuclear fuel, where radiation damage and diffusion (processes heavily dependent on point defects) are of vital importance. Metallic nuclear fuels swell under fission conditions, creating fission product gases such as helium, xenon and krypton. Several systems of U are examined within a density functional theory framework utilizing projector augmented wave pseudopoten
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20

Mohammed, T. J. "Some uranium halide complexes." Thesis, University of Sussex, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380492.

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21

Sililo, Bernard Liswani. "Modelling uranium leaching kinetics." Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/61336.

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The uranium price decline has negatively impacted on the uranium mining industry. This decline in price requires that uranium metallurgical processes be made to operate more efficiently. Some key parameters that influence the dissolution and kinetics of leaching uraninite (one of the main minerals from which uranium can be extracted) are pH, oxidationreduction potential and iron concentration. A good understanding of the effect these parameters have on the leach kinetics would lead to an efficient operation of metallurgical processes. The objective of this work was therefore to investiga
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22

Martz, Pierre. "Caractéristiques, chronologie et rôles des circulations fluides dans le bassin d'Athabasca et son socle : implications dans la formation et l'évolution du gisement d'uranium de Cigar Lake." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0221/document.

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Les principales cibles d'exploration pour les gisements d’uranium de type discordance du bassin d’Athabasca (Canada) sont les structures graphiteuses du socle. Toutes ces structures ne sont pourtant pas fertiles et elles présentent des histoires plus ou moins complexes de circulations fluides successives. Cette thèse propose de déconvoluer les caractéristiques propres à chaque évènement de circulations fluides par une étude multidisciplinaire focalisée sur l’exemple de l’environnement proche du gisement de Cigar Lake. Au cours de l’exhumation tardi-orogénique du socle, la formation de failles
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23

Hochman, Mark Brett McEwen. "The application of artificial thermoluminescence to uranium exploration and uranium ore genesis studies." Title page, abstract and contents only, 1989. http://web4.library.adelaide.edu.au/theses/09PH/09phh6825.pdf.

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Dewu, Bala Bellow Muhammad. "Distribution of uranium in granites and mobility of uranium during low-temperature alteration processes." Thesis, University of Exeter, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236543.

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Lewis, Matthew R. (Matthew Robert) 1969. "The behavior of uranium in the environment : bacterial reduction of an aqueous uranium species." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/8840.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 2000.<br>Includes bibliographical references (p. 379-382).<br>Experimental and analytical studies were performed to investigate the behavior of uranium with bacteria in an anaerobic environment. Laboratory studies used Shewanella putrefaciens because of its ability to grow rapidly in aerobic conditions and reduce metals in anaerobic conditions. Under anaerobic conditions, Shewanella putrefaciens use aqueous uranium as the electron acceptor in lieu of oxygen. The reduction of U(VI) to U(IV) removes uranium from
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26

Singer, David Marc. "Uranium and strontium (bio)geochemistry : limits on uranium and strontium mobility in the environment /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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27

Bachmaf, Samer. "Uranium sorption on clay minerals." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2010. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-62404.

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The objective of the work described in this thesis was to understand sorption reactions of uranium occurring at the water-clay mineral interfaces in the presence and absence of arsenic and other inorganic ligands. Uranium(VI) removal by clay minerals is influenced by a large number of factors including: type of clay mineral, pH, ionic strength, partial pressure of CO2, load of the sorbent, total amount of U present, and the presence of arsenate and other inorganic ligands such as sulfate, carbonate, and phosphate. Both sulfate and carbonate reduced uranium sorption onto IBECO bentonite due to
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Bechtel, Ryan Daniel. "Uranium-232 Beryllide Neutron Source." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14650.

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A [U-232]UBe13 neutron source was designed and modeled and the fluence and flux distributions were calculated. The [U-232]U decay chain emits six high energy alpha particles in quick succession and is ideal for use in a beryllium (a,n) neutron source. [U-232]U is an undesirable byproduct in the production of [U-233]U in the thorium fuel cycle; its concentrations can vary from 5-3000 ppm in bred [U-233]U. A 1.1018-cm diameter by 1.1018-cm tall cylinder of [U-233]UBe13 with 300ppm U-232 at 0.74 GBq (20 mCi) was modeled and found to have a peak yield of 3.5*105 n/s after 10.17 years. At this peak
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Stuttard, Garry P. "Studies of mixed uranium oxides." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335866.

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Moore, Alexander Patrick. "Computational properties of uranium-zirconium." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50339.

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The metallic binary-alloy fuel Uranium-Zirconium is important for use in the new generation of advanced fast reactors. Uranium-Zirconium goes through a phase transition at higher temperatures to a (gamma) Body Centered Cubic (BCC) phase. The BCC high temperature phase is particularly important since it corresponds to the temperature range in which the fast reactors will operate. A semi-empirical Modified Embedded Atom Method (MEAM) potential is presented for Uranium-Zirconium. This is the first interatomic potential created for the U-Zr system. The bulk physical properties of the Uranium-
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Valter, Mikael. "Thermal Conductivity of Uranium Mononitride." Thesis, Linköpings universitet, Tunnfilmsfysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-122337.

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Thermal conductivity is a crucial parameter for nuclear fuel, as it sets an upper limit on reactor operating temperature to have safety margins. Uranium mononitride (UN) is a prospective fuel for fast reactors, for which limited experimental studies have been conducted, compared to the currently dominating light-water reactor fuel, uranium dioxide. The aim of this thesis is to determine the thermal conductivity in UN and to determine its porosity dependence. This was done by manufacturing dense and porous high-purity samples of UN and examining them with laser flash analysis, which with data o
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Lopes, Filipa. "Uranium glass in museum collections." Master's thesis, FCT - UNL, 2008. http://hdl.handle.net/10362/1954.

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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Conservação e Restauro Área de especialização – Vidro<br>The presence of uranium glass objects in museum and private collections has raised radiation protection concerns resulting from possible exposure to ionizing radiation emitted by this type of object. Fourteen glass objects with different uranium contents were studied. Dose rates (β + γ radiation) were measured with a beta/gamma probe at several distances from the glass objects. In general the determined dos
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VanEngelen, Michael Robert. "Molecular aspects of uranium toxicity." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/vanengelen/VanEngelenM1209.pdf.

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Carter, Helen. "Uranium separations using extraction chromatography." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/11261.

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In the analysis of environmental samples for uranium and thorium pollutants and at natural levels for the dating of geological samples there was felt a need to develop better uranium and thorium separation procedures to replace the established anion exchange method used at AEA Technology plc. This was the first aim of the PhD research. Separation of uranium from thorium prior to measurement of the isotopes by alpha spectrometry was necessary due to the similar alpha energies of234U and 230Th. TRU and UTEVA extraction chromatography resins (EIChroM Industries) were investigated as potential rep
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Matthews, Isaac A. "Global terrestrial uranium supply and its policy implications : a probabilistic projection of future uranium costs." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62704.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering; and, (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 99-104).<br>An accurate outlook on long-term uranium resources is critical in forecasting uranium costresource relationships, and for energy policy planning as regards the development and deployment of nuclear fuel cycle alternatives. In this study, which was part of the MIT
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Smith, Mitchell Martinis. "Zeolite characteristics for maximum uranium uptake from solution and potential for uranium immobilization in soils." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 1997. http://digitalcommons.auctr.edu/dissertations/2565.

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Zeolites, having stable porous structures and high ion exchange capabilities are potential buffer materials that can be added to a soil matrix to improve the ion exchange ability. This study investigated the performance of various zeolites for the uptake of uranium as soluble UO22+, with the ultimate goal being to develop an in situ ion trap to immobilize potentially leachable residue in uranium contaminated soils. The natural zeolite, clinoptilolite and synthetic zeolites, K-L, LZY, 13X, and mordenite were evaluated for the uptake of UO22+ in both batch and column percolation studies. In the
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Santos, Elizangela Augusta dos. "Recuperação de urânio de rejeito de mina por meio de lixiviação alcalina." CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2010. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=130.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Um dos principais problemas ambientais ligados as indústrias minerárias é o gerenciamento adequado dos seus resíduos. O armazenamento destes em locais não apropriados à espera de tratamento é uma questão que exige solução. A mina Osamu Utsumi localizada na cidade de Caldas, Minas Gerais, vem enfrentando esse problema. O resíduo desta mina consiste em uma lama alcalina gerada a partir da neutralização do pH da drenagem ácida de mina e é rico em vários metais, dentre os quais encontra-se o urânio. A recuperação do urânio por técnicas
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BEDIA, CARLOS E. M. de. "Gestão do conhecimento organizacional através da identificação e análise das competências essenciais: o caso USEXA." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11650.

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George, Brigitte. "Comportement naturel de l'uranium en milieu volcanique et approche expérimentale /." Vandœuvre-lès-Nancy : Centre de recherches sur la géologie de l'uranium, 1988. http://catalogue.bnf.fr/ark:/12148/cb349283370.

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Geißler, Andrea. "Prokaryotic microorganisms in uranium mining waste piles and their interactions with uranium and other heavy metals." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek &quot;Georgius Agricola&quot, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:105-5486188.

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The influence of uranyl and sodium nitrate under aerobic and anaerobic conditions on the microbial community structure of a soil sample from the uranium mining waste pile Haberland in Germany was studied by using the 16S rRNA gene retrieval. The results demonstrate a shifting in the bacterial populations depending on the treatment, whereas the archaeal community was changed independently of the treatment. By using the nitrate reductase gene (narG) as a functional marker, it was additionally demonstrated that some of the bacteria stimulated possess the membrane-bound nitrate reductase. In addit
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41

Bergen, Laura. "Uranium in the environment: a characterization and comparison of uranium mobility in ancient and modern sediments." American Mineralogist, 2012. http://hdl.handle.net/1993/14431.

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The behavior of U in near surface sedimentary environments has changed throughout geologic time. There is a marked shift in U (IV) mineral stability and deposit style at approximately 2200 Ma due to changes in the concentration of O in the atmosphere. For example, prior to 2200 Ma, fluvial U deposits could form and U(IV) were stable in surface and near-surface environments. In modern, anthropogenic sedimentary systems such as U tailings, U (IV) minerals are not stable and readily oxidize to U (VI) minerals. In addition, U is much more mobile in modern sediments relative sediments that were
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42

Gordon, Sue Carleton University Dissertation Geology. "The environmental geochemistry of total uranium and 226 RA at the South March Uranium Occurrence, Ontario." Ottawa, 1986.

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43

Talbot, Collin. "Effects of relative humidity on the fluorescence of uranine (disodium fluorescein)." Oklahoma City : [s.n.], 2009.

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44

Dueber, Ross E. "Study of uranium oxide insertion compounds." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333325.

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45

Beverini, Gianluca. "Phase transformations in binary uranium alloys." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292647.

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46

Walker, Susan M. "Structure evolution in hydrothermal uranium chemistry." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249301.

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47

Rotter, Ben E. G. "Modelling bioremediation of uranium contaminated aquifers." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/2573.

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Radionuclide extraction, processing and storage have resulted in a legacy of radionuclide-contaminated groundwater aquifers worldwide. An emerging remediation technology for such sites is the in situ immobilisation of radionuclides via biostimulation of dissimilatory metal reducing bacteria. While this approach has been successfully demonstrated in experimental studies, advances in understanding and optimization of the technique are needed. Mass transfer processes in heterogeneous and structured porous media may significantly affect the geochemical and microbial processes taking place in conta
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48

Gardner, Benedict Matthew. "The chemistry of uranium triamidoamine complexes." Thesis, University of Nottingham, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.582015.

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With the ever-diminishing reserves of fossil fuels, it is inevitable that nuclear power will represent a major source for global energy production in the not too distant future. The principal nuclear fuel, uranium, interacts with numerous other elements from all over the Periodic Table during its life in the nuclear energy cycle. A more profound appreciation of the chemical behaviour of uranium and its compounds represents a significant and important link in the chain towards the development of better nuclear fuel materials and cleaner long-term waste treatment solutions. However, the f-block
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49

Obermoller, H. D. "Uranium Isotope Separation by Ion Exchange." Thesis, Imperial College London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518938.

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50

Manara, Dario. "Melting transition measurements in uranium dioxide." Thesis, University of Warwick, 2004. http://wrap.warwick.ac.uk/66996/.

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The broad objective of research described in this thesis was the experimental determination of the solid / liquid transition in both stoichiometric and hyperstoichiometric uranium dioxide. Experimental information in this field constitutes a necessary reference for the analysis of hypothetical nuclear reactor accidents and, in particular, for the formulation of an equation of state (EOS) for uranium dioxide. A review of previous research on the same topic revealed that only few and uncertain experimental data were available prior to this work, obtained with conventional thermal analysis techni
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