Results 21 to 30 of about 25,009 (294)

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

Stable and radiogenic isotopes as tracers for soil degradation [PDF]

open access: yes, 2008
Soil erosion seriously threatens mountain slopes. Direct measurement of soil erosion in the field is difficult and needs long term recording. However, stable and radiogenic isotopes are potential tracers for soil erosion estimation and would enable a ...
Schaub, Monika
core   +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

The Guianese paradox: How can the freshwater outflow from the Amazon increase the salinity of the Guianan shore? [PDF]

open access: yes, 2007
French Guiana is notable for the extent of its rain forests, which occupy 97% of the country, and the influence of the Amazon along its shores. In fact, the shores and estuaries support a mangrove forest typical of saline conditions.
Muller, Etienne   +2 more
core   +1 more source

Bulk Hydrogen Isotopes in Ordinary Chondrites [PDF]

open access: yes, 2023
Bulk hydrogen isotopes in nominally anhydrous meteorites are a key component in our understanding of the distribution of hydrogen in our solar system, including the provenance of water on the Earth.
Cato, Michael J
core  

Oxygen Isotopes and Volatiles in Martian Meteorite [PDF]

open access: yes, 2013
Oxygen isotopes were measured in mineral separates from martian meteorites using laser fluorination and were found to be remarkably uniform in both δ18O and Δ17O, suggesting that martian magmas did not assimilate aqueously altered crust regardless of any
Channon, Melanie Beth
core   +1 more source

Dataset of oxygen and hydrogen isotopes in Mexican tap water [PDF]

open access: yes, 2023
Dataset of oxygen and hydrogen isotopes in Mexican tap water collected in June to July 2018. 
Saskia Ammer (8061680)
core   +1 more source

(Table 2) Stable hydrogen and carbon isotopes of C37 alkenones during Termination I and II of sediment core MD02-2594 [PDF]

open access: yes, 2014
(Table 1) Stable hydrogen and carbon isotopes of C37 alkenones during Termination I and II of sediment core MD96 ...
Anchelique Mets (2687539)   +11 more
core   +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

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

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