Results 31 to 40 of about 2,091,230 (337)
The Influence of the Atmospheric Electric Field on Soil Redox Potential
Oxygen, 2023 Atmospheric electric fields (AEFs) have recently been proposed to link to biogeochemical processes below the Earth’s surface by means of a charge separation.
Konstantinos Kourtidis, Michel Vorenhout
doaj +1 more source
Hydrogen/nitrogen/oxygen defect complexes in silicon from computational searches [PDF]
Phys. Rev. B 80, 144112 (2009), 2009 Point defect complexes in crystalline silicon composed of hydrogen, nitrogen, and oxygen atoms are studied within density-functional theory (DFT). Ab initio Random Structure Searching (AIRSS) is used to find low-energy defect structures. We find new lowest-energy structures for several defects: the triple-oxygen defect, {3O}, triple oxygen with a ...
arxiv +1 more source
Oxygen, 2022 Determination of abdominal aortic aneurysm (AAA) rupture risk involves the accurate prediction of mechanical stresses acting on the arterial tissue, as well as the wall strength which has a correlation with oxygen supply within the aneurysmal wall.
Alexis Throop +4 more
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Heliyon, 2022 Delayed encephalopathy after acute carbon monoxide poisoning (DEACMP) is a disease with an incomplete pathological mechanism, long treatment time, and uncertain factors affecting the therapeutic effect.
Fangling Huang +14 more
doaj
Oxygen, 2022 The current study aimed to evidence the strengths and weaknesses of two indirect methods for assessing the anaerobic alactic contribution to a specific CrossFit® workout.
Manoel Rios +4 more
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Computational Discovery of Fast Interstitial Oxygen Conductors [PDF]
arXiv, 2023 New highly oxygen-active materials may enhance many energy-related technologies by enabling efficient oxygen-ion transport at lower temperatures, e.g., below 400 Celsius. Interstitial oxygen conductors have the potential to realize such performance but have received far less attention than vacancy-mediated conductors.
arxiv
Factors controlling oxygen migration barriers in perovskites [PDF]
Solid State Ionics 296 (2016) 71-77, 2016 Perovskites with fast oxygen ion conduction can enable technologies like solid oxide fuel cells. One component of fast oxygen ion conduction is low oxygen migration barrier. Here we apply ab initio methods on over 40 perovskites to produce a database of oxygen migration barriers ranging from 0.2 to 1.6 eV. Mining the database revealed that systems with
arxiv +1 more source
Oxygen depletion hypothesis remains controversial: a mathematical model of oxygen depletion during FLASH radiation [PDF]
Radiation Research . 2022. 197(2):175-183, 2020 Background: Experiments have reported low normal tissue toxicities during FLASH radiation, but the mechanism has not been elaborated. Several hypotheses have been proposed to explain the mechanism. The oxygen depletion hypothesis has been introduced and mostly studied qualitatively.
arxiv +1 more source
Oxygen, 2022 The beers’ lag time measured with the PBN (N-t-Butyl-α-phenylnitrone) spin trapping experiments coupled with EPR spectroscopy is related to their antioxidant capacity and shelf life. The effect on the lag time of the alcohol content of the beer (starting
Maria Cristina Porcu +2 more
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Singlet Oxygen Generation as a Major Cause for Parasitic Reactions during Cycling of Aprotic Lithium-Oxygen Batteries [PDF]
Nature Energy 2, 17036 (2017), 2017 Non-aqueous metal-oxygen batteries depend critically on the reversible formation/decomposition of metal oxides on cycling. Irreversible parasitic reactions cause poor rechargeability, efficiency, and cycle life and have predominantly been ascribed to the reactivity of reduced oxygen species with cell components.
arxiv +1 more source