Results 41 to 50 of about 13,651 (294)
Stable isotopes of oxygen and hydrogen in precipitation and river water in Georgia
Journal of Hydrology and Hydromechanics, 2023 The article presents the first comprehensive evaluation of the isotopic composition of precipitation and runoff in Georgia. It is based on data from the monitoring of δ18O and δ2H in monthly precipitation at eleven precipitation stations and monthly ...
Holko Ladislav +7 more
doaj +1 more source
Hydrogen and oxygen isotope ratios in human hair are related to geography [PDF]
Proceedings of the National Academy of Sciences, 2008 We develop and test a model to predict the geographic region-of-origin of humans based on the stable isotope composition of their scalp hair. This model incorporates exchangeable and nonexchangeable hydrogen and oxygen atoms in amino acids to predict the δ 2 H and δ 18
James R, Ehleringer +5 more
openaire +2 more sources
Hydrogen in Nominally Anhydrous Crustal Minerals [PDF]
, 2003 Systematic infrared and nuclear magnetic resonance investigations of common crustal minerals were undertaken to better understand the geologic significance of minor components of structural hydrous species within these nominally anhydrous minerals ...
Johnson, Elizabeth Ann
core +1 more source
, 2023 In this study, fresh peach juice is taken as the research object, and the moisture in the peach juice sample is extracted without fractionation by using the full-automatic vacuum condensation extraction technology. The hydrogen and oxygen isotopes in the
ZHANG, Zhi-yong +4 more
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Oxygen and hydrogen isotopes measured on water bottle samples during EUROFLEETS cruise Iberia-Forams
, 2015 Oxygen and hydrogen isotopes measured on water bottle samples during EUROFLEETS cruise Iberia ...
Voelker, Antje H L +9 more
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The Significance of Hydrogen and Oxygen Stable Isotopes in the Water Vapor Source in Dingxi Area
, 2021 Deuterium excess and stable oxygen isotopes in precipitation have been widely applied to trace the source of water vapor. In this study, hydrogen and oxygen isotope analyses of samples were collected on seven sampling stations in Dingxi area from April ...
Xixi Wu +7 more
core +1 more source
Stable and radiogenic isotopes as tracers for soil degradation [PDF]
, 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
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Resolving the controls of water vapour isotopes in the Atlantic sector
Nature Communications, 2019 Water isotope modelling is an important tool in climate reconstructions, but there remain gaps in our understanding of the effects upon oxygen and hydrogen isotope fractionation, and thus the source of the deposited signal.
Jean-Louis Bonne +7 more
doaj +1 more source
Progress on the nephrite sources of jade artifacts in ancient China from the perspective of isotopes
Frontiers in Earth Science, 2022 The use of isotopes is crucial for understanding the origin of jade/nephrite. This article first contrasts recent studies on the radioisotopes and stable isotopes of contemporary nephrite deposits in China, Baikal region, and South Korean Peninsula.
Rong Wang, Xiaowei Shi
doaj +1 more source
Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment
Molecular Oncology, EarlyView.This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley +1 more source