Results 21 to 30 of about 464,807 (207)

Thermal transport study in actinide oxides with point defects

open access: yesNuclear Engineering and Technology, 2019
We use a molecular dynamics simulation to explore thermal transport in oxide nuclear fuels with point defects. The effect of vacancy and substitutional defects on the thermal conductivity of plutonium dioxide and uranium dioxide is investigated.
Alex Resnick   +4 more
doaj   +1 more source

Influence of Chironomus riparius (Diptera, Chironomidae) and Tubifex tubifex (Annelida, Oligochaeta) on oxygen uptake by sediments. Consequences of uranium contamination [PDF]

open access: yes, 2009
The diffusive oxygen uptake (DOU) of sediments inhabited by Chironomus riparius and Tubifex tubifex was investigated using a planar oxygen optode device, and complemented by measurements of bioturbation activity.
Lagauzère, Sandra   +13 more
core   +1 more source

Laboratory simulation of uranium metal corrosion in different soil moisture regimes

open access: yesMethodsX, 2020
A novel laboratory simulation system has been developed for the study of the corrosion of uranium metal in soils. Corrosion and transportation of depleted uranium (DU) as the metal undergoes weathering as a buried material within the soil environment ...
Qinku Zhang   +6 more
doaj   +1 more source

Thermodynamic properties of uranium dioxide: Electronic contributions to the specific heat [PDF]

open access: yes, 1980
It has recently been proposed that the anomalous specific heat of uranium dioxide be ascribed to the effect of electronic defects rather than Frenkel disorder on the union sub-lattice.
Masri, P.   +5 more
core   +1 more source

Modeling Uranium Transport in Koongarra, Australia: The Effect of a Moving Weathering Zone [PDF]

open access: yes, 2001
Natural analogues are an important source of long-term data and may be viewed as naturally occurring experiments that often include processes, phenomena, and scenarios that are important to nuclear waste disposal safety assessment studies.
Hassanizadeh, S.M.   +2 more
core   +1 more source

Configurational analysis of uranium-doped thorium dioxide [PDF]

open access: yes, 2015
While thorium dioxide is already used industrially in high temperature applications, more insight is needed about the behaviour of the material as part of a mixed-oxide (MOX) nuclear fuel, incorporating uranium.
de Leeuw, Nora   +2 more
core   +6 more sources

Theoretical analysis of uranium-doped thorium dioxide: Introduction of a thoria force field with explicit polarization

open access: yesAIP Advances, 2015
Thorium dioxide is used industrially in high temperature applications, but more insight is needed into the behavior of the material as part of a mixed-oxide (MOX) nuclear fuel, incorporating uranium.
A. E. Shields   +2 more
doaj   +1 more source

Development and justification of fuel efficiency for subcritical installation driven by electron accelerator

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2017
The variants of design and technological features of manufacturing of fuel assemblies for the subcritical nuclear installation “Neutron Source” controlled by an electron accelerator, with rod-type fuel elements are presented.
Krasnorutskii V. S.   +4 more
doaj   +7 more sources

Identifying chemically similar multiphase nanoprecipitates in compositionally complex non-equilibrium oxides via machine learning

open access: yesCommunications Materials, 2022
Characterizing fission products in uranium dioxide nuclear fuel is important for predicting its long-term properties. Here, machine learning is used to mine microscopy images of precipitates and nanoscale gas bubbles in high-burn-up fuels, providing ...
Keyou S. Mao   +9 more
doaj   +1 more source

Defect Clustering in Irradiated Thorium Dioxide and alpha-Uranium

open access: yes, 2023
Thorium dioxide (ThO2) and metallic uranium (alpha-U) represent important alternative nuclear fuels. Investigating the behavior of defects introduced into these materials in an irradiation environment is critical for understanding microstructure ...
Sanjoy Kumar Mazumder (16634130)
core   +1 more source

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