Results 11 to 20 of about 3,218,520 (221)

Geochemical and microbiological controls on the transport of Uranium through soil [PDF]

open access: yes, 2009
Widespread use of depleted uranium (DU) in munitions around the world has raised questions about contamination of soils, water and vegetation with uranium (U).
Stone, Dorothy Grace
core   +7 more sources

Reduction of uranium(VI) phosphate during growth of the thermophilic bacterium thermoterrabacterium ferrireducens [PDF]

open access: yes, 2005
The thermophilic, gram-positive bacterium Thermoterrabacterium ferrireducens coupled organotrophic growth to the reduction of sparingly soluble U(VI) phosphate.
Coker, V.   +8 more
core   +4 more sources

Advances in Research on Uranium Isotope Fraction in Nature and Prospects

open access: yesHe huaxue yu fangshe huaxue, 2022
Uranium is the heaviest naturally occurring radioactive element in nature, and it is widely distributed in the earth’s crust. With the improvement of the technical accuracy of mass spectrometry to measure uranium isotope ratios, it is gradually ...
SONG Jing   +5 more
doaj   +1 more source

Quantum-mechanical study of the electronic properties of UxPuyOz compounds formed during the recovery of spent nuclear fuel [PDF]

open access: yesJournal of the Serbian Chemical Society, 2023
A promising way to recover spent nuclear fuel (SNF) is the method of extracting transuranium compounds from molten salt, which makes it possible to obtain a partial separation between transuranium compounds and lanthanides.
Galashev Alexander Y.   +2 more
doaj   +1 more source

Microbial reduction and precipitation of uranium using anaerobic bacteria Shewanella sp GCWx8 [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2019
The microbial reduction and precipitation of uranium using anaerobic bacteria are one of the effective methods considered during the last two decades to prevent permeation of the uranium to the environment.
A Zaheri, A Keshtkar, F Fatemi
doaj   +1 more source

Large Igneous Province Record Through Time and Implications for Secular Environmental Changes and Geological Time‐Scale Boundaries

open access: yesGeophysical Monograph Series, Page 1-26., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Richard E. Ernst   +8 more
wiley  

+6 more sources

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

Uranium mineralization formed through multi-stage superposition: Case of the Qianjiadian deposit in Songliao Basin, China

open access: yesEnergy Geoscience, 2021
The Qianjiadian uranium deposit is located in the Kailu Depression of Songliao Basin. It is a large-scale in-situ leachable uranium deposit of sandstone type and provides a typical case of the uranium deposits in the Songliao Basin.
Zhenyan Chen   +5 more
doaj   +1 more source

Optimization of uranium bioreduction by shewanella RCRI7 using Response Surface Design Method (RSM) in industrial waste [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2023
Uranium compounds are toxic and radioactive. Its poisonous properties can be fatal. So, it is necessary to prevent its excessive entry into nature due to uranium's chemical toxicity and radioactivity.
R. Ghasemi   +7 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

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