Results 51 to 60 of about 3,736,497 (386)
Oxygen and Cation Ordered Perovskite, Ba2Y2Mn4O11 [PDF]
, 2004 A three-step route has been developed for the synthesis of a new oxygen-ordered double perovskite, BaYMn2O5.5 or Ba2Y2Mn4O11. (i) The A-site cation ordered perovskite, BaYMn2O5+d, is first synthesized at d ~ 0 by an oxygen-getter-controlled low-O2-pressure encapsulation technique utilizing FeO as the getter for excess oxygen.
arxiv +1 more source
Deciphering mechanisms of enhanced-retarded oxygen diffusion in doped Si [PDF]
Appl. Phys. Lett. 103, 251909 (2013), 2013 In this letter, we study enhanced-retarded diffusion of oxygen in doped silicon by means of first principle calculations. We found that the migration of oxygen dimers can not be significantly affected by strain, doping type or rate. We attribute the enhanced oxygen diffusion in p-doped silicon to reduced monomer migration energy, and the retarded ...
arxiv +1 more source
Reactive Oxygen Species Signaling Pathways: Arbiters of Evolutionary Conflict?
Oxygen, 2022 In the history of life, cooperation between biological units has led to increased complexity, e.g., eukaryotic cells and multicellular organisms. Cooperation requires limiting the gains of “defectors” in favor of the cooperative higher-level unit.
Neil W. Blackstone
doaj +1 more source
Oxygen and nitrogen abundances in nearby galaxies. Correlations between oxygen abundance and macroscopic properties [PDF]
Astron.Astrophys. 425 (2004) 849-869, 2004 We performed a compilation of more than 1000 published spectra of HII regions in spiral galaxies. The oxygen and nitrogen abundances in each HII region were recomputed in a homogeneous way, using the P-method. The radial distributions of oxygen and nitrogen abundances were derived.
arxiv +1 more source
Co₃O₄ nanocrystals on graphene as a synergistic catalyst for oxygen reduction reaction. [PDF]
Nature Materials, 2011 Catalysts for oxygen reduction and evolution reactions are at the heart of key renewable-energy technologies including fuel cells and water splitting.
Yongye Liang +6 more
semanticscholar +1 more source
Oxygen, 2022 This narrative paper reviews the current knowledge of Home Oxygen Therapy (HOT) in stable Chronic Obstructive Pulmonary Disease (COPD) and Interstitial Lung Disease (ILD), two major causes of Long-Term Oxygen Therapy (LTOT) prescription.
Andrea S. Melani +3 more
doaj +1 more source
Selective control of oxygen sublattice stability by epitaxial strain in Ruddlesden-Popper films [PDF]
APL Mater. 3, 126102 (2015), 2015 Oxygen-defect control has long been considered an influential tuning knob for producing various property responses in complex oxide films. In addition to physical property changes, modification to the lattice structure, specifically lattice expansion, with increasing oxygen vacancy concentrations has been reported often and has become the convention ...
arxiv +1 more source
Dose-Response, 2020 Objective: To investigate the therapeutic roles of hyperbaric oxygen exposure on high-altitude pulmonary edema and to determine whether aquaporin-1 and aquaporin-5 were involved in the pathogenesis of HAPE in rats.
Jiewen Tan MD +6 more
doaj +1 more source
Hyperbaric Oxygen Treatment Improves Intestinal Barrier Function After Spinal Cord Injury in Rats
Frontiers in Neurology, 2020 Intestinal barrier dysfunction is often observed clinically after spinal cord injury (SCI) and seriously affects long-term quality of life. Hyperbaric oxygen (HBO) treatment has been proved to promote barrier function recovery after injury, but the ...
Xuehua Liu +5 more
doaj +1 more source
Oxygen, 2022 Many environmental stresses cause an increase in reactive oxygen species in plants and alter their nutritional value. Plants respond to many stresses by producing increased amounts of compounds with antioxidant properties including vitamins ...
Duroy A. Navarre +2 more
doaj +1 more source