Results 21 to 30 of about 2,160,052 (296)

New Experimental Tools to Use Noble Gases as Artificial Tracers for Groundwater Flow

open access: yesFrontiers in Water, 2022
Labeling groundwater by injecting an artificial tracer is a standard and widely used method to study groundwater flow systems. Noble gases dissolved in groundwater are potentially ideal artificial tracers, as they are not subject to biogeochemical ...
Matthias S. Brennwald   +8 more
doaj   +1 more source

Theoretical Prediction on the New Types of Noble Gas Containing Anions OBONgO− and OCNNgO− (Ng=He, Ar, Kr and Xe)

open access: yesMolecules, 2020
The fluorine-less noble gas containing anions OBONgO− and OCNNgO− have been studied by correlated electronic structure calculation and density functional theory.
Cheng-Cheng Tsai, Yu-Wei Lu, Wei-Ping Hu
doaj   +1 more source

Pathway to cryogen free production of hyperpolarized Krypton-83 and Xenon-129. [PDF]

open access: yesPLoS ONE, 2012
Hyperpolarized (hp) (129)Xe and hp (83)Kr for magnetic resonance imaging (MRI) are typically obtained through spin-exchange optical pumping (SEOP) in gas mixtures with dilute concentrations of the respective noble gas.
Joseph S Six   +4 more
doaj   +1 more source

Noble gases in the Cameroon line and the He, Ne, and Ar isotopic compositions of high mu (HIMU) mantle [PDF]

open access: yes, 1999
Ultramafic xenoliths, basaltic lavas, and CO2 gases from the Cameroon line volcanic chain provide the first characterization of combined He, Ne, and Ar isotopes in a high-time-integrated 238U/204Pb = μ (HIMU) magmatic system. Helium isotopic compositions
Alex N. Halliday   +16 more
core   +1 more source

Computation-informed optimization of Ni(PyC)₂ functionalization for noble gas separations [PDF]

open access: yes, 2021
Metal-organic frameworks (MOFs) are promising nanoporous materials for the adsorptive capture and separation of noble gases at room temperature. Among the numerous MOFs synthesized and tested for noble gas separations, Ni(PyC)₂ (PyC = pyridine-4 ...
Maxwell W., Terban   +9 more
core   +2 more sources

Noble gas cluster ions

open access: yesEPJ Web of Conferences, 2018
In this work, a reaction mechanism of formation of noble gas (Ng) cluster ions has been theoretically investigated in detail. The kinetic studies of formation of Xe+Xe cluster in Xe, Ar+Ar cluster ions in Ar, and Ne+Ne cluster ions in Ne have been made ...
Kaya Yunus, Kalkan Yalçin, Veenhof Rob
doaj   +1 more source

The Effect of Past Saturation Changes on Noble Gas Reconstructions of Mean Ocean Temperature

open access: yesGeophysical Research Letters, 2023
The ocean's immense ability to store and release heat on centennial to millennial time scales modulates the impacts of climate perturbations. To gain a better understanding of past variations in mean ocean temperature (MOT), a noble gas‐based proxy ...
Frerk Pöppelmeier   +6 more
doaj   +1 more source

Geochemical Characteristics and Gas Source Contributions of Noble Gases of the Sulige Large Tight Gas Field of Upper Paleozoic in Ordos Basin, China

open access: yesFrontiers in Earth Science, 2022
Tight gas is the fastest developing unconventional natural gas resource, becoming the principal part for gas reserves and production growth in China. The Sulige gas field is the largest gas field and also the typical low porosity and low permeability ...
Wang Xiaobo   +18 more
doaj   +1 more source

The Use of Noble Gases to Constrain Subsurface Fluid Dynamics in the Hydrocarbon Systems

open access: yesFrontiers in Earth Science, 2022
Geochemical techniques have been widely applied to study the generation and migration of hydrocarbons in sedimentary basins over the last several decades.
Yan Li   +6 more
doaj   +1 more source

Water quality at Chaco Culture National Historical Park and the potential effects of hydrocarbon extraction

open access: yesJournal of Hydrology: Regional Studies, 2023
Study region: Chaco Culture National Historical Park (CCNHP) is in the San Juan Basin of northwestern New Mexico, U.S.A. Its only water supply is in Gallup Sandstone aquifer, stratigraphically surrounded by layers long targeted for oil and natural gas ...
Benjamin S. Linhoff   +3 more
doaj   +1 more source

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