Results 21 to 30 of about 1,812,757 (349)

Redistribution of hydrogen and oxygen isotopes in groundwater flow systems: From altitude effect to depth effect

open access: yesShuiwen dizhi gongcheng dizhi, 2023
The hydrogen and oxygen isotopes in precipitation have the altitude effect, and they participate in the groundwater circulation after the infiltration of precipitation.
Pengfei HAN   +3 more
doaj   +1 more source

Phases of the hydrogen isotopes under pressure: metallic hydrogen

open access: yesAdvances in Physics: X, 2021
Hydrogen is the simplest molecule in nature. One of the key problems and challenges in condensed matter physics is to understand the phases, properties, and structure of hydrogen as a function of pressure and temperature.
Isaac F. Silvera, Ranga Dias
doaj   +1 more source

Solute diffusion of hydrogen isotopes in tungsten—a gas loading experiment

open access: yesPhysica Scripta, 2020
The diffusion of protium and deuterium in tungsten is measured in gas loading experiments as a function of temperature for a hydrogen isotope loading pressure of 500 mbar and temperatures between 1600 K and 2600 K.
G. Holzner   +3 more
semanticscholar   +1 more source

Recent Advances and Prospects in Design of Hydrogen Permeation Barrier Materials for Energy Applications—A Review

open access: yesMolecules, 2022
The hydrogen infrastructure involves hydrogen production, storage and delivery for utilization with clean energy applications. Hydrogen ingress into structural materials can be detrimental due to corrosion and embrittlement.
Ewa C. E. Rönnebro   +2 more
doaj   +1 more source

Isotopic Fingerprinting: A Promising Tool for Coffee Authenticity Checks

open access: yesProceedings, 2023
Almost every physical or chemical process in nature favors certain light stable isotopes over others, and thereby leaves an isotopic “fingerprint” on the substances involved.
Johannes Wintel   +4 more
doaj   +1 more source

Molecular Sieves for the Separation of Hydrogen Isotopes.

open access: yesACS Applied Materials and Interfaces, 2019
Stable molecular hydrogen isotopes, D2 and T2, are both scarce and essential in several energy, industrial, and large-scale fundamental research applications.
J. Perez-Carbajo   +4 more
semanticscholar   +1 more source

Hydrochemical and stable isotopes (δ2H and δ18O) changes of groundwater from a spring induced by local earthquakes, Northwest China

open access: yesFrontiers in Earth Science, 2023
It has been well reported that earthquakes can cause changes in groundwater chemistry and isotopes, and much of those changes were occurred in wells or hot springs; however, changes in cold spring caused by local small earthquakes have received less ...
Yang Xiang   +3 more
doaj   +1 more source

Affecting factors and application of the stable hydrogen isotopes of alkane gases

open access: yesPetroleum Exploration and Development, 2019
To study the composition, affecting factors of the stable hydrogen isotopes of alkane gases and their application to identification of the natural gas origin and maturities, the chemical and isotopic compositions of 118 gas samples of Carboniferous ...
Shipeng HUANG   +10 more
doaj   +1 more source

Datasets for spatial variation of O and H isotopes in waters and hair across South Korea

open access: yesData in Brief, 2020
The data presented here include the results of oxygen (δ18O) and hydrogen (δ2H) isotope analyses of water and human scalp hair samples collected from throughout the South Korea.
Mukesh Kumar Gautam   +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

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