Results 21 to 30 of about 43,291 (164)

Deuterium retention in W and W-Re alloy irradiated with high energy Fe and W ions: Effects of irradiation temperature

open access: yesNuclear Materials and Energy, 2016
Neutron irradiation to W induces defects acting as traps against hydrogen isotopes and transmutation elements such as Re and Os. To investigate synergetic effects on radiation-induced defects and Re, deuterium (D) retention in W and W–5% Re samples were ...
Y. Hatano   +11 more
doaj   +1 more source

Quantifying Raindrop Evaporation Deficit in General Circulation Models from Observed and Model Rain Isotope Ratios on the West Coast of India

open access: yesAtmosphere, 2023
Raindrop evaporation is an important sub-cloud process that modifies rainfall amount and rainwater isotope values. Earlier studies have shown that various general circulation models (GCMs) do not incorporate this process properly during the simulation of
Saikat Sengupta   +3 more
doaj   +1 more source

RuKY Catalyst‐Packed Permeation Membrane for Quantitative Ammonia and d3‐Ammonia Dehydrogenation to Ultrapure Hydrogen

open access: yesChemistryOpen
Ammonia is a promising carbon‐free hydrogen carrier, but incomplete ammonia dehydrogenation (cracking) generates atmospheric emissions of NOx, a potent greenhouse gas. Additionally, incomplete cracking of ammonia leads to regulatory challenges in nuclear
Christopher J. Koch   +7 more
doaj   +1 more source

Deuterium Isotope Effects on 13C-NMR Chemical Shifts of 10-Hydroxybenzo[h]quinolines

open access: yesMolecules, 2013
Deuterium isotope effects on 13C-NMR chemical shifts are investigated in a series of 10-hydroxybenzo[h]quinolines (HBQ’s) The OH proton is deuteriated. The isotope effects on 13C chemical shifts in these hydrogen bonded systems are rather unusual.
Daniel T. Gryko   +2 more
doaj   +1 more source

Magnetoresistance in Pd–Co/Cu/Pd–Co trilayer under hydrogen–nitrogen gas mixture

open access: yesAIP Advances, 2023
The magnetoresistance of three Pd–Co(1)/Cu/Pd–Co(3) trilayers with different Pd–Co(3) thicknesses were evaluated in a H2–N2 gas mixture. The resistance of Pd–Co/Cu/Pd–Co increased with increasing hydrogen concentration in the gas phase, which is similar ...
Satoshi Akamaru   +2 more
doaj   +1 more source

Isotope characteristic of snow cover in Tomsk [PDF]

open access: yesE3S Web of Conferences, 2019
The snow cover has a high sorption ability that way it is a source of information in identifying anthropogenic pollution of the environment, and it also contains a climate signal.
Kalashnikova Daria   +3 more
doaj   +1 more source

Construction and testing of a low-cost device for the collection of rainfall samples destined for stable isotope analysis

open access: yesSouth African Journal of Science, 2023
Oxygen- and hydrogen-isotope ratios in rainfall provide important hydroclimatic information, yet despite a global network of rainfall isotope measurements, significant geographical gaps exist in data coverage, with only three long-term stations spanning
Jonathan A. Holmes, Jennifer M. Fitchett
doaj   +1 more source

Modeling of H/D isotope-exchange in crystalline beryllium

open access: yesNuclear Materials and Energy, 2019
A reaction-diffusion model with surface occupation dependent desorption [D. Matveev et al., Nucl. Instr. Meth. B 430 (2018) 23–30] has been updated to handle multiple hydrogen species to simulate hydrogen/deuterium isotope-exchange experiments performed ...
D. Matveev   +4 more
doaj   +1 more source

Effect of Pressure on Hydrogen Isotope Fractionation in Methane during Methane Hydrate Formation at Temperatures Below the Freezing Point of Water

open access: yesMethane, 2023
Isotopic fractionation of methane between gas and solid hydrate phases provides data regarding hydrate-forming environments, but the effect of pressure on isotopic fractionation is not well understood.
Akihiro Hachikubo   +3 more
doaj   +1 more source

Diffusion of Hydrogen Isotopes in Zirconium Alloys

open access: yesHe huaxue yu fangshe huaxue
Tritium is a common radioactive product in nuclear power plants. It is easy to diffuse, penetrate and be easily absorbed by organisms due to its small atomic radius.
Long WANG   +6 more
doaj   +1 more source

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