(n.) A medium of great elasticity and extreme tenuity, supposed to pervade all space, the interior of solid bodies not excepted, and to be the medium of transmission of light and heat; hence often called luminiferous ether.
(n.) Supposed matter above the air; the air itself.
(n.) A light, volatile, mobile, inflammable liquid, (C2H5)2O, of a characteristic aromatic odor, obtained by the distillation of alcohol with sulphuric acid, and hence called also sulphuric ether. It is powerful solvent of fats, resins, and pyroxylin, but finds its chief use as an anaesthetic. Called also ethyl oxide.
(n.) Any similar oxide of hydrocarbon radicals; as, amyl ether; valeric ether.
Example Sentences:
(1) It was shown in experiments on four dogs by the conditioned method that the period of recovery of conditioned activity after one hour ether anaesthesia tested 7 to 7.5 days.
(2) After 3 and 6 months, blood collected by cardiocentesis using ether anesthesia and then sacrificed to remove CNS and internal organs.
(3) Glycosyl ceramide concentration was determined by gas-liquid chromatography of the trimethylsilyl ethers of the methyl glycosides.
(4) Ether extracts were analyzed by gas chromatography-mass spectrometry (GC-MS) and various chlorinated and non-chlorinated compounds were detected, e.g.
(5) 1 Rats were convulsed once daily for 7 days by exposure to the inhalant convulsant agent, flurothyl (Indoklon, bis (2,2,2-trifluouroethyl)ether).
(6) No impurities in the technical grade ether influenced the responses.
(7) Depletion of extracellular Ca2+ by EGTA [ethylene glycol-bis(beta-aminoethyl ether)-N,N,N'N'-tetraacetic acid] attenuated both [Ca2+]i increase and superoxide production induced by particles.
(8) It was presumed that thymohydroquinone is excreted as ethereal sulfuric acid conjugate in man.
(9) The authors have carried out an experimental study of an insufficiently explored problem of the diffusion capacity of the ethers of cholesterol through the skin and the possibility of their intra-articular transport with cholesterol ether of the oleic acid marked 1,2(3)H taken as an example.
(10) Chelation of extracellular calcium with ethyleneglycol-bis(beta-aminoethyl ether)N,N,N',N' tetraacetic acid (EGTA) did not abolish the increase in calcium.
(11) The UE and KE fractions were then separated by silicic acid column chromatography with a stepwise elution method using ether-hexane.
(12) The enzyme appears to be highly specific since D-dopachrome, alpha-methyldopachrome, dopaminochrome, adrenochrome methyl ether and deoxyadrenochrome are not substrates.
(13) After introduction of surgical anesthesia with general agents such as ether and chloroform, a large number of deaths due to anesthetic toxicity were reported.
(14) Data of ether-extracted total fat content versus data of fat marbling planimetry correlated well with r = 0.9.
(15) When the enzyme is inactivated with 16alpha-[2-3H]bromoacetoxyestradiol 3-methyl ether, amino acid analysis of acid hydrolysates reveals 3-carboxymethylhistidine and 1,3-dicarboxymethylhistidine.
(16) In addition these methods of estrogen treatment potentiated the ether-induced increase in plasma prolactin in the morning (9.00-11.00) beginning on week 2 and continuing for 3-8 weeks.
(17) Studies of structure-transacylation relationships for a series of acylhydroxamic acids of chlorinated biphenyl ethers and their related compounds by rat liver N-arylacylhydroxamic acid-dependent N-acyltransferase (AHNAT) are described.
(18) The biologically inactive phorbol ester 12-O-tetradecanoyl phorbol-13-acetate methyl ether (10 nM) had no effect on 45Ca2+ uptake.
(19) Steroids were extracted with ethyl ether, and cortisol was purified by gel column chromatography prior to assay.
(20) The method comprised adsorption on Extrelut column from alkaline plasma, elution with diethyl ether-methylene chloride, evaporation in the presence of 0.01 M hydrochloric acid and injection of the acid solution onto a mu Bondapak C18 column, using acetonitrile-0.025 M potassium dihydrogenphosphate as mobile phase and ultraviolet detection at 210 nm.
Oxygen
Definition:
(n.) A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15.96.
(n.) Chlorine used in bleaching.
Example Sentences:
(1) Steady-state values of cell, glucose, and cellulase concentration oxygen tension, and outlet gas oxygen partial pressure were recorded.
(2) It is concluded that amlodipine reduces myocardial ischemic injury by mechanism(s) that may involve a reduction in myocardial oxygen demand as well as by positively influencing transmembrane Ca2+ fluxes during ischemia and reperfusion.
(3) Heart rate (HR), pulmonary ventilation (V), oxygen consumption (VO2), carbon dioxide production (VCO2), and respiratory quotient (RQ) were measured.
(4) Manometric studies with resting cells obtained by growth on each of these sulfur sources yielded net oxygen uptake for all substrates except sulfite and dithionate.
(5) The data indicate that ebselen is likely to be useful in the therapy of inflammatory conditions in which reactive oxygen species, such as peroxides, play an aetiological role.
(6) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(7) Microelectrodes were used to measure the oxygen tension (PO2) profile within individual spheroids at different stages of growth.
(8) However, time in greater than 21% oxygen was significantly longer in infants less than 1000 g (median 30 days, 8.5 days in patients greater than 1000 g, p less than 0.01).
(9) Previous studies have not evaluated the potential for oxygen toxicity at 9.5 psia.
(10) The pH of ST solutions varied with the mode of oxygenation as follows: 7.9-8.2 in Groups I and IV; 8.7-8.9 in Groups II and V; 7.1-7.4 in Groups III and VI.
(11) The aim of this study was to plot the course of the transcutaneously measured PCO2 (tcPCO2) in the fetus during oxygenation of the mother.
(12) Blood gas variables produced from a computed in vivo oxygen dissociation curve, PaeO2, P95 and C(a-x)O2, were introduced in the University Hospital of Wales in 1986.
(13) Also for bronchogenic carcinoma with that a dependence could be shown between haemoglobin concentration--and by this the oxygen supply of the tumor--and the reaction of the primary tumor after radiotherapy.
(14) The present results using approximately 12% hemoglobin concentration in 0.1 M Bistris buffer at pD 7 and 27 degrees C with and without organic phosphate show that there is no significant line broadening on oxygenation (from 0 to 50% saturation) to affect the determination of the intensities or areas of these resonances.
(15) There was good agreement between the survival of normally oxygenated cells in culture and bright cells from tumors and between hypoxic cells in culture and dim cells from tumors over a radiation dosage range of 2-5 Gray.
(16) In presence of oxygen (air) the phototactic reaction values are somewhat lower than in its absence.
(17) A fiberoptic flow-directed catheter inserted into the hepatic vein continuously measures hepatic venous oxygen hemoglobin saturation (ShvO2).
(18) Anaesthesia was achieved by a mixture of oxygen, nitrous oxide and fluothane without use of muscle relaxants.
(19) The use of 100% oxygen to calculate intrapulmonary shunting in patients on PEEP is misleading in both physiological and methodological terms.
(20) Tachycardia, pulmonary hypertension, increased venous oxygen desaturation, and increasing core temperature develop as the syndrome progresses.