Uranium Dioxide
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Determination of U3O8 in UO2 by infrared spectroscopy
Abstract The oxygen-uranium (O-U) system has various oxides, such as UO2, U4O9, U3O8, and UO3. Uranium dioxide is the most important one because it is used as nuclear fuel in nuclear power plants. UO2 can have a wide stoichiometric variation due to excess or deficiency of oxygen in its crystal lattice, which can cause significant modifications of its proprie
REM, Int. Eng. J.. Publicado em: 2017-03
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2. Estudo da remoção de manganês de efluentes de mineração utilizando cal, calcário e dióxido de manganês / Study of manganese removal from mining effluent using lime, limestone and manganese dioxide
Manganese is a common component of acid mine drainage (AMD). Due to its high solubility over a wide pH range, it is notoriously difficult to remove it from contaminated waters. The AMD that occurs in Mineral Industrial Complex of Poços de Caldas (CIPC) which belongs to the Nuclear Industries of Brazil (INB), is due to the great amount of su
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/06/2009
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3. Processo alternativo para obtenção de tetrafluoreto de urânio a partir de efluentes fluoretados da etapa de reconversão de urânio / DRY URANIUM TETRAFLUORIDE PROCESS PREPARATION USING THE URANIUM HEXAFLUORIDE RECONVERSION PROCESS EFFLUENTS.
It is a well known fact that the use of uranium tetrafluoride allows flexibility in the production of uranium silicide and uranium oxide fuell. To its obtention there are two conventional routes, the one which reduces uranium from the UF6 hydrolisis solution with stannous chloride, and the hydrofluorination of a solid uranium dioxide. In this work we are int
Publicado em: 2008
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4. Estudo do mecanismo de bloqueio da sinterização no sistema UO2-Gd2O3 / Studies on the sintering blockage mechanism in the UO2-Gd2O3 system
A incorporação do gadolínio diretamente no combustível de reatores nucleares para geração de eletricidade é importante para compensação da reatividade e para o ajuste da distribuição da densidade de potência, permitindo ciclos de queima mais longos, com intervalo de recarga de 18 meses, otimizando-se a utilização do combustível. A incorporaç�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/03/2001
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5. REDUCTION OF INORGANIC COMPOUNDS WITH MOLECULAR HYDROGEN BY MICROCOCCUS LACTILYTICUS I. : Stoichiometry with Compounds of Arsenic, Selenium, Tellurium, Transition and Other Elements
Woolfolk, C. A. (University of Washington, Seattle) and H. R. Whiteley. Reduction of inorganic compounds with molecular hydrogen by Micrococcus lactilyticus. I. Stoichiometry with compounds of arsenic, selenium, tellurium, transition and other elements. J. Bacteriol. 84:647–658. 1962.—Extracts of Micrococcus lactilyticus (Veillonella alcalescens) oxidize
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6. A Hydrogen-Oxidizing, Fe(III)-Reducing Microorganism from the Great Bay Estuary, New Hampshire
A dissimilatory Fe(III)- and Mn(IV)-reducing bacterium was isolated from bottom sediments of the Great Bay estuary, New Hampshire. The isolate was a facultatively anaerobic gram-negative rod which did not appear to fit into any previously described genus. It was temporarily designated strain BrY. BrY grew anaerobically in a defined medium with hydrogen or la
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7. Molecular genetics of Thiobacillus ferrooxidans.
Thiobacillus ferrooxidans is a gram-negative, highly acidophilic (pH 1.5 to 2.0), autotrophic bacterium that obtains its energy through the oxidation of ferrous iron or reduced inorganic sulfur compounds. It is usually dominant in the mixed bacterial populations that are used industrially for the extraction of metals such as copper and uranium from their ore