Results 1 to 10 of about 5,191 (118)

Stochastic optimization of a uranium oxide reaction mechanism using plasma flow reactor measurements [PDF]

open access: yesScientific Reports, 2023
In this work, a coupled Monte Carlo Genetic Algorithm (MCGA) approach is used to optimize a gas phase uranium oxide reaction mechanism based on plasma flow reactor (PFR) measurements.
Mikhail Finko   +7 more
doaj   +2 more sources

Transient interactions of boron carbide with molten uranium oxide

open access: yesNuclear Materials and Energy, 2021
Thermodynamic equilibrium calculations have shown that, at the elevated temperatures anticipated during severe accidents, uranium oxide-boron carbide interactions are likely to result in significant boron volatilization and the formation of uranium ...
Christophe Journeau   +6 more
doaj   +1 more source

X-ray-Fluorescence-Based Screening Method for Uranium in Contaminated Brackish Water Using Graphene Oxide Nanosheets

open access: yesMembranes, 2023
In the event of uranium release into the environment due to an accident, confirming the presence of uranium contamination is difficult because uranium is a naturally occurring element. In this study, we developed a method based on X-ray fluorescence (XRF)
Hiroshi Yoshii   +3 more
doaj   +1 more source

Evaluation of the acid leaching technique for recovery of U3O8 and ThO2 in niobium/tantalum slag

open access: yesBrazilian Journal of Radiation Sciences, 2023
This study presented the recovery of uranium oxide and thorium oxide from aluminothermic slag from the metallurgical processing of columbite – a niobium/tantalum mineral with the presence of U3O8 and ThO2 – from a mining-industrial facility.
Vanderlei Vilaça Moura   +2 more
doaj   +1 more source

Research Advances in Graphene Oxide Composites for Uranium Adsorption

open access: yesHe huaxue yu fangshe huaxue, 2023
Due to its excellent adsorption properties, graphene oxide has attracted great attention in the field of radioactive wastewater treatment. The adsorption properties of graphene oxide can be further improved with functional modification.
LIU Peng, RUAN Hui, XUE Yun, MA Fu-qiu
doaj   +1 more source

Neutronic Performance of the VVER-1000 Reactor Using Thorium Fuel with ENDF Library

open access: yesScience and Technology of Nuclear Installations, 2021
In this paper, neutronic calculations and the core analysis of the VVER-1000 reactor were performed using MCNP6 code together with both ENDF/B-VII.1 and ENDF/B-VIII libraries.
Sonia M. Reda   +3 more
doaj   +1 more source

Maleic Anhydride-β-Cyclodextrin Functionalized Magnetic Nanoparticles for the Removal of Uranium (VI) from Wastewater

open access: yesCrystals, 2022
New maleic anhydride-β-cyclodextrin functionalized magnetic iron oxide nanoparticles (IONPs@MAH-β-CD) were prepared through the simple chemical coprecipitation method.
Xing Zhong   +6 more
doaj   +1 more source

Effect of oxygen containing compounds in uranium tetrafluoride on its non-adiabatic calciothermic reduction characteristics

open access: yesNuclear Engineering and Technology, 2021
Uranium ingot is produced by metallothermic reduction of uranium tetrafluoride using magnesium or calcium as reductant. Presence of oxygen containing compounds viz.
Sonal Gupta   +3 more
doaj   +1 more source

Pore structure evolution characteristics of sandstone uranium ore during acid leaching

open access: yesNuclear Engineering and Technology, 2021
To better understand the permeability of uranium sandstone, improve the leaching rate of uranium, and explore the change law of pore structure characteristics and blocking mechanism during leaching, we systematically analyzed the microstructure of acid ...
Sheng Zeng   +5 more
doaj   +1 more source

Model for calculating the temperature in the fuel rods of the fa-x fuel assembly produced for subcritical instillation and reactor wwr-m

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2020
The TVS-X fuel rod model designed by NSC KIPT as an alternative fuel for subcritical assembly (SCA, KIPT, Kharkov) and research reactor (WWR-M, INR, Kiev) is described.
Ігор Олександрович Чернов   +1 more
doaj   +3 more sources

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