Results 21 to 30 of about 2,091,230 (337)

The oxygen trail: tissue oxygenation [PDF]

open access: yesBritish Medical Bulletin, 1999
Aerobic cellular respiration depends on the efficient supply of oxygen and substrate to the mitochondria. There is an oxygen cascade from the environment to the subcellular environment. Efficient oxygen delivery depends on the coordinated interaction between the respiratory and circulatory systems.
M Singer, A T Nathan
openaire   +3 more sources

Comparison of Oxygen Electrode Chronoamperometry and Spectrophotometry for Determination of Catalase Activity

open access: yesOxygen, 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

The Pro-Oxidant Effect of Class A CpG ODNs on Human Neutrophils Includes Both Non-Specific Stimulation of ROS Production and Structurally Determined Induction of NO Synthesis

open access: yesOxygen, 2023
Synthetic CpG oligonucleotides are promising components of immunomodulatory drugs for the treatment and prophylaxis of infectious diseases, cancers, and allergies.
Ekaterina A. Golenkina   +3 more
doaj   +1 more source

Efficacy of hyperbaric oxygen in treatment of prolonged disorders of consciousness after hypoxic-ischemic brain injury

open access: yesDi-san junyi daxue xuebao, 2021
Objective To investigate the effect of hyperbaric oxygen (HBO) therapy on consciousness and prognosis in patients with prolonged disorders of consciousness (pDOC) after hypoxic-ischemic brain injury (HIBI). Methods Clinical data of 78 pDOC patients after
CHEN Yan   +6 more
doaj   +1 more source

On the maximum value of the cosmic abundance of oxygen and the oxygen yield [PDF]

open access: yesMon.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.
arxiv   +1 more source

Beneficial effect of β-elemene alone and in combination with hyperbaric oxygen in traumatic brain injury by inflammatory pathway

open access: yesTranslational Neuroscience, 2018
Present study evaluates the neuroprotective effect of β-elemene alone and in combination with hyperbaric oxygen (HO) in traumatic brain injury (TBI).
Meng Xiangen   +7 more
doaj   +1 more source

Oxygen [PDF]

open access: yesBreathe, 2019
The September issue of Breathe focuses on medical oxygen http://bit.ly/2M83NLo.
openaire   +2 more sources

Constraining the rise of oxygen with oxygen isotopes [PDF]

open access: yesNature Communications, 2019
AbstractAfter permanent atmospheric oxygenation, anomalous sulfur isotope compositions were lost from sedimentary rocks, demonstrating that atmospheric chemistry ceded its control of Earth’s surficial sulfur cycle to weathering. However, mixed signals of anoxia and oxygenation in the sulfur isotope record between 2.5 to 2.3 billion years (Ga) ago ...
Pascal Philippot   +6 more
openaire   +8 more sources

Effect of Hyperbaric Oxygen Therapy on Polarization Phenotype of Rat Microglia After Traumatic Brain Injury

open access: yesFrontiers in Neurology, 2021
Background: The neurological defect caused by secondary damage following traumatic brain injury (TBI) is considered critical for the management of TBI.
Fang Liang   +5 more
doaj   +1 more source

Bonding, Conductance and Magnetization of Oxygenated Au Nanowires [PDF]

open access: yesPhys. Rev. Lett. 100, 046801 (2008), 2013
Spin-density-functional calculations of tip-suspended gold chains, with molecular oxygen, or dissociated oxygen atoms, incorporated in them, reveal structural transitions for varying lengths. The nanowires exhibit enhanced strength for both oxygen incorporation modes, and upon stretching tip atoms join the wire.
arxiv   +1 more source

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