Results 21 to 30 of about 19,638 (264)

Estimation of Surface and Groundwater Interaction by Stable Isotopic Techniques – A Case Study of Chengalpattu District, OMR Region [PDF]

open access: yesNature Environment and Pollution Technology
Isotopes are atoms of an element having the same atomic number but different mass numbers. Isotopes in hydrology and water resources are used for identifying its occurrence, movement, residence times, recharge, and discharge process.
Surendar Natarajan
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

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

Characteristics of Stable Hydrogen and Oxygen Isotopes of Soil Moisture under Different Land Use in Dry Hot Valley of Yuanmou

open access: yesOpen Chemistry, 2019
Soil moisture, stable hydrogen, and oxygen isotopes were sampled and determined in a demonstration area of soil and moisture conservation at the Laocheng Town of Yuanmou County in Chuxiong Prefecture, Yunnan of three land use types: Leucaena Benth ...
Han Jiao-Jiao   +3 more
doaj   +1 more source

Membrane Processes for the Nuclear Fusion Fuel Cycle

open access: yesMembranes, 2018
This paper reviews the membrane processes for the nuclear fusion fuel cycle—namely, the treatment of the plasma exhaust gases and the extraction of tritium from the breeding blankets.
Silvano Tosti, Alfonso Pozio
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

Separation of Hydrogen Isotopes by Metal-Organic Framework Quantum Sieving Effect

open access: yesHe huaxue yu fangshe huaxue
Due to the similar physical and chemical properties of hydrogen isotopes, the separation of high-purity hydrogen isotopes has become one of the major problems in modern separation technology. The realization of high-purity hydrogen isotope separation can
Peng LIU, Jia-xian CHENG, Fu-qiu MA
doaj   +1 more source

Composition and Spatial Distribution Characteristics of Hydrogen and Oxygen Isotopes of Surface Water in Altay, Xinjiang Province

open access: yesYankuang ceshi, 2021
BACKGROUND Hydrogen and oxygen isotopes can be used to identify water sources and trace water cycles and have been used in hydrogeochemistry since the 1950s.
GAO Juan-qin   +6 more
doaj   +1 more source

Low-frequency orbital variations controlled climatic and environmental cycles, amplitudes, and trends in northeast Africa during the Plio-Pleistocene

open access: yesCommunications Earth & Environment, 2023
The eastern Mediterranean sapropels, paced by insolation, provide a unique archive of African monsoon strength over the Late Neogene. However, the longer-term climate of this region lacks characterization within the context of changes in ice volume, sea ...
Rachel Lupien   +6 more
doaj   +1 more source

Periodicity in the isotope chemistry of hydrogen [PDF]

open access: yesProceedings 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(
openaire   +2 more sources

Home - About - Disclaimer - Privacy