| oxygen effect | Enhancement of radiosensitivity of cells in a high concentration of oxygen. (05 Mar 2000) |
|---|---|
| oxygen electrode | A sensitive method to detect oxygen consumption, involves a PTFE (Teflon) membrane. (18 Nov 1997) |
| oxygen inhalation therapy | Inhalation of oxygen aimed at restoring toward normal any pathophysiologic alterations of gas exchange in the cardiopulmonary system, as by the use of a respirator, nasal catheter, tent, chamber, or mask. (12 Dec 1998) |
| oxygen isotopes | Stable oxygen atoms that have the same atomic number as the element oxygen, but differ in atomic weight. O-17 and 18 are stable oxygen isotopes. (12 Dec 1998) |
| oxygen poisoning | A body disturbance resulting from breathing high partial pressures of oxygen; characterised by visual and hearing abnormalities, unusual fatigue while breathing, muscular twitching, anxiety, confusion, incoordination, and convulsions; although the mechanism for development of the condition is obscure, a disruption of enzymatic activity is likely, perhaps as a result of free radical formation. Synonym: oxygen poisoning. (05 Mar 2000) |
| oxygen radical | <chemistry> Any oxygen species that carries an unpaired electron (except free oxygen). Examples are the hydroxyl radical and the superoxide anion. These radicals are very powerful oxidizing agents and cause structural damage to proteins and nucleic acids. They mediate the damaging effects of ionising radiation. (18 Nov 1997) |
| oxygen radioisotopes | Unstable isotopes of oxygen that decay or disintegrate emitting radiation. O atoms with atomic weights 13, 14, 15, 19, and 20 are radioactive oxygen isotopes. (12 Dec 1998) |
| oxygen tent | A transparent enclosure, suspended over the bed and enclosing the patient, used to supply a high concentration of oxygen. (05 Mar 2000) |
| oxygen therapy | Treatment in which an increased concentration of oxygen is made available for breathing, through a nasal catheter, tent, chamber, or mask. (05 Mar 2000) |
| oxygen toxicity | A body disturbance resulting from breathing high partial pressures of oxygen; characterised by visual and hearing abnormalities, unusual fatigue while breathing, muscular twitching, anxiety, confusion, incoordination, and convulsions; although the mechanism for development of the condition is obscure, a disruption of enzymatic activity is likely, perhaps as a result of free radical formation. Synonym: oxygen poisoning. (05 Mar 2000) |
| oxygen utilization coefficient | The extraction coefficient for oxygen in any given tissue. (05 Mar 2000) |
| oxygen-15 | A cyclotron-produced, positron-emitting radioisotope of oxygen with a half-life of 122.2 seconds; used in studies of respiratory function and in positron emission tomography. (05 Mar 2000) |
| oxygen-16 | The common oxygen isotope, making up 99.76% of natural oxygen. (05 Mar 2000) |
| oxygen-17 | The rarest of the stable oxygen isotopes, making up 0.04% of natural oxygen. (05 Mar 2000) |
| oxygen-18 | A stable oxygen isotope making up 0.20% of natural oxygen; used in mass spectrometry and in NMR studies of tissue. Synonym: heavy oxygen. (05 Mar 2000) |
Synonyms :
Synonyms : Anadrol, Anapolon 50, Oxymethalone, Oxymetholone, (17 beta)-Isomer, Oxymetholone, (5 alpha, 17 alpha)-Isomer
Synonyms : Bristol-Myers Squibb Brand of Oxymorphone Hydrochloride, Endo Brand of Oxymorphone Hydrochloride, MRZ 2593-Br, MRZ-2593, Methylnaloxone, N-Methylnaloxone, N-Methylnaloxone Bromide, Naloxone MB, Naloxone Methobromide, Naloxone Methylbromide, Numorphan, MRZ 2593
Synonyms : Glicentin (33-69), Proglucagon (33-69)
Synonyms : Belmac Brand of Oxyphenbutazone, Diflamil, Novartis Ophthalmics Brand of Oxyphenbutazone, Oxyphenylbutazone, Tanderil
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| oxidation-reduction reaction |
a reaction in which electrons are transferred between species or in which atoms change oxidation number
Ãâó: library.thinkquest.org/19957/redox/glossary.html
|
|---|---|
| oxidoreductase |
An enzyme that catalyses oxidation
Ãâó: www.nature.com/nrm/journal/v6/n2/glossary/nrm1569_...
|
| oxytocin |
Pituitary hormone that stimulates breast milk production.
Ãâó: www.ehealthmd.com/library/pregnancy/PGW_glossary.h...
|
| oxidative phosphorylation |
The phosphorylation of ADP to ATP in a process driven by the generation of a proton gradient in the mitochondrial inner membrane that drives ATP synthase.
Ãâó: www.genpromag.com/Glossary~LETTER~O.html
|
| oxytocin |
A hormone that stimulates milk flow in lactating mammals (females nursing their young), and contractions of the muscles of the reproductive tract in many species.
Ãâó: www.peteducation.com/dict_alpha_listing.cfm
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