Results 1 to 10 of about 4,512,152 (372)
On the maximum value of the cosmic abundance of oxygen and the oxygen yield [PDF]
Mon.Not.Roy.Astron.Soc.376:353-360,2007, 2007 We search for the maximum oxygen abundance in spiral galaxies. Because this maximum value is expected to occur in the centers of the most luminous galaxies, we have constructed the luminosity - central metallicity diagram for spiral galaxies, based on a large compilation of existing data on oxygen abundances of HII regions in spiral galaxies.
Allende Prieto +68 more
arxiv +3 more sources
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 ...
Andrew J. Morris +3 more
arxiv +3 more sources
Domain formation on oxidized graphene [PDF]
, 2012 Using first-principles calculations within density functional theory we demonstrate that the adsorption of single oxygen atom results in significant electron transfer from graphene to oxygen. This strongly disturbs the charge landscape of the C-C bonds at the proximity.
Ciraci, S., Topsakal, M.
arxiv +4 more sources
Acknowledgment to the Reviewers of Oxygen in 2022
Oxygen, 2023 High-quality academic publishing is built on rigorous peer review [...]
Oxygen Editorial Office
doaj +1 more source
Biology, 2023 Background. Ozone is an allotrope of oxygen whose use in medicine has rapidly grown in recent years. Ozonated blood allows for the use of ozone in a safe modality, as plasma and blood cells are endowed with an antioxidant system able to quench ozone’s ...
Salvatore Chirumbolo +12 more
doaj +1 more source
A case report of heat stroke with early severe brain edema
环境与职业医学, 2023 Heat stroke can be divided into two types: exertional and classic, mainly manifested as a clear history of exposure to hot temperature/high heat environment or intense physical activity in hot environment, core temperature exceeding 40 ℃, accompanied by ...
Tuoying WEN, Shisheng LUO, Liya PAN
doaj +1 more source
Cells, 2021 Mesenchymal stem cells (MSCs) are known to migrate to tissue injury sites to participate in immune modulation, tissue remodelling and wound healing, reducing tissue damage.
Thierry Franck +4 more
doaj +1 more source
In vitro oxygen imaging of acellular and cell-loaded beta cell replacement devices
Scientific Reports, 2023 Type 1 diabetes (T1D) is an autoimmune disease that leads to the loss of insulin-producing beta cells. Bioartificial pancreas (BAP) or beta cell replacement strategies have shown promise in curing T1D and providing long-term insulin independence. Hypoxia
Mrignayani Kotecha +7 more
doaj +1 more source
Oxygen, 2023 Molecular mechanisms based on photo-physical processes involving dietary carotenoids, their radicals, and the role of oxygen are discussed and used to suggest explanations of the poorly understood and often contradictory results related to mainly skin ...
Fritz Boehm +2 more
doaj +1 more source
Oxygen, 2023 Catalase is a key antioxidative enzyme, and a deficiency or malfunction of catalase is hypothesized to be related to various diseases. To investigate catalase activity, it is important to use reliable methods and experimental protocols enabling ...
Michal Szczepanczyk +3 more
doaj +1 more source