Mass spectrometric measurement of hydrogen isotope fractionation for the reactions of chloromethane with OH and Cl [PDF]
Atmospheric Chemistry and Physics, 2018 Chloromethane (CH3Cl) is an important provider of chlorine to the stratosphere but detailed knowledge of its budget is missing. Stable isotope analysis is a potentially powerful tool to constrain CH3Cl flux estimates.
F. Keppler +11 more
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Temperature dependence of hydrogen isotope effect in LaNi5-H(D) system
Nuclear Analysis, 2023 To study inverse effect of hydrogen isotopes in LaNi5 for hydrogen isotope separation at ambient temperature, temperature dependence of hydrogen isotope effect in LaNi5－H(D) system was investigated in the temperature range -70 °C to 3 °C.
Weiwei Wang +6 more
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The effectiveness of using carbonate isotope measurements of body tissues to infer diet in human evolution: Evidence from wild western chimpanzees (Pan troglodytes verus)* [PDF]
, 2015 Changes in diet throughout hominin evolution have been linked with important evolutionary changes. Stable carbon isotope analysis of inorganic apatite carbonate is the main isotopic method used to reconstruct fossil hominin diets; to test its ...
Boesch, Christophe +7 more
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Isotope Effects on Chemical Shifts in the Study of Intramolecular Hydrogen Bonds
Molecules, 2015 The paper deals with the use of isotope effects on chemical shifts in characterizing intramolecular hydrogen bonds. Both so-called resonance-assisted (RAHB) and non-RAHB systems are treated. The importance of RAHB will be discussed.
Poul Erik Hansen
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Empirical evidence for the fractionation of carbon isotopes between diamond and iron carbide from the Earth’s mantle [PDF]
, 2014 S.M. would like to thank the Engineering and Physical Sciences Research Council, the Diamond Trading Company, and the Department of Physical Sciences, The Open University (UK) for financial support during his time as a PhD student at University College ...
Krispin, Catherine +16 more
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Origin and pathways of pro- and retrograde fluids, PTt paths and fluid-mineral equilibria from Alpine veins of the Central Alps : case studies of the Fibbia and Amsteg areas [PDF]
, 2006 In order to constrain the conditions of and processes related to vein formation and the origins of mineralising fluids, field work, multiple geochemical methods applied to whole rocks, minerals, and fluid inclusions, as well as thermodynamic modeling ...
Heijboer, Tjerk Cornelis
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Quantitative Prediction of Selectivity in Iridium-Catalysed Hydrogen Isotope Exchange Reactions [PDF]
, 2020 A pallette of commonly used directing groups, including various pharmaceutically relevant nitrogen-containing heterocycles, are quantitatively ranked based on the results of intermolecular hydrogen isotope exchange competition reactions using two iridium
William, Kerr +3 more
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Periodicity in the isotope chemistry of hydrogen [PDF]
Proceedings of the National Academy of Sciences, 1981 Periodicities and regularities are established among the deuterium to protium isotopic reduced partition function ratios, ln( s / s ′) f , of 39 diatomic and 19 polyatomic hydrides. It is shown that ln( s / s ′)
openaire +2 more sources
The isotopic composition of methane in the stratosphere : high-altitude balloon sample measurements [PDF]
, 2011 The isotopic composition of stratospheric methane has been determined on a large suite of air samples from stratospheric balloon flights covering subtropical to polar latitudes and a time period of 16 yr.
Brass, Marc +11 more
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Bifunctional catalytic activity of anion-doped LaSrCoO4 for oxygen reduction and evolution reactions
Royal Society Open ScienceHere, we synthesized Co-based, anion-incorporated Ruddlesden–Popper perovskite electrocatalysts (LaSrCoO4−x X y ) and compared their catalytic performances in the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER).
Ittoku Nozawa, Hidehisa Hagiwara
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