(n.) An aeriform fluid; -- a term used at first by chemists as synonymous with air, but since restricted to fluids supposed to be permanently elastic, as oxygen, hydrogen, etc., in distinction from vapors, as steam, which become liquid on a reduction of temperature. In present usage, since all of the supposed permanent gases have been liquified by cold and pressure, the term has resumed nearly its original signification, and is applied to any substance in the elastic or aeriform state.
(n.) A complex mixture of gases, of which the most important constituents are marsh gas, olefiant gas, and hydrogen, artificially produced by the destructive distillation of gas coal, or sometimes of peat, wood, oil, resin, etc. It gives a brilliant light when burned, and is the common gas used for illuminating purposes.
(n.) Laughing gas.
(n.) Any irrespirable aeriform fluid.
Example Sentences:
(1) Carbon dioxide (CO2) levels, volumes, and temperatures of expired gas were measured from the tracheal and esophageal tubes.
(2) Steady-state values of cell, glucose, and cellulase concentration oxygen tension, and outlet gas oxygen partial pressure were recorded.
(3) Blood samples were analysed by mass spectroscopy and gas chromatography.
(4) Optimum rates of acetylene reduction in short-term assays occurred at 20% O2 (0.2 atm (1 atm = 101.325 kPa] in the gas phase.
(5) Glycosyl ceramide concentration was determined by gas-liquid chromatography of the trimethylsilyl ethers of the methyl glycosides.
(6) Early recognition is facilitated by monitoring of arterial blood gas levels for hypoxemia.
(7) "There is … a risk that the political, trade, and gas frictions with Russia could lead to strong deterioration in economic relations between the two countries, with a significant drop in Ukraine's exports to and imports from Russia.
(8) He said Germany was Russia’s most important economic partner, and pointed out that 35% of German gas originated in Russia.
(9) Ether extracts were analyzed by gas chromatography-mass spectrometry (GC-MS) and various chlorinated and non-chlorinated compounds were detected, e.g.
(10) 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.
(11) It is a specific clinical picture with extensive soft tissue gas and swelling of the forearm.
(12) A neodymium YAG (Nd:YAG) laser was evaluated in a dog ulcer model used in the same manner as is recommended for bleeding patients (power 55 W, divergence angle 4 degrees, with CO2 gas-jet assistance).
(13) The flow of a specified concentration of test gas exits from the mixing board, enters a distributing tube, and is then distributed equally to 12 chamber tubes housing one mouse each.
(14) The corresponding hydrides, mono-n-butyltin hydride, di-n-butyltin hydride, tri-n-butyltin hydride, monophenyltin hydride, diphenyltin hydride triphenyltin hydride, are detected by electron-capture gas chromatography after clean-up by silica gel column chromatography.
(15) Airway closure (CV), functional residual capacity (FRC) and the distribution of inspired gas (nitrogen washout delay percentage, NWOD %) and arterial oxygen tension (PaO2) was measured by standard electrodes in eight extremely obese patients before and after weight loss (mean weights 142 and 94 kg, respectively) following intestinal shunt operation.
(16) They were like some great show, the gas squeezing up from the depths of the oil well to be consumed in flame against the intense black horizon, like some great dragon.
(17) The existence of 5alpha-androstane-3alpha,17beta-diol in the androstanediol fraction could be demonstrated by gas chromatography and mass spectrometry (GC-MS).
(18) A pilot study was undertaken to determine the prevalence of gas in the puerperal endometrial cavity and to determine whether this finding has any relationship to the mode of delivery or to the development of puerperal endometritis.
(19) Inner Ear Decompression Sickness (IEDCS)--manifested by tinnitus, vertigo, nausea, vomiting, and hearing loss--is usually associated with deep air or mixed gas dives, and accompanied by other CNS symptoms of decompression sickness (DCS).
(20) Subjects underwent measurement of lung volumes, arterial blood gas analysis and an incremental bicycle exercise test.
Mask
Definition:
(n.) A cover, or partial cover, for the face, used for disguise or protection; as, a dancer's mask; a fencer's mask; a ball player's mask.
(n.) That which disguises; a pretext or subterfuge.
(n.) A festive entertainment of dancing or other diversions, where all wear masks; a masquerade; hence, a revel; a frolic; a delusive show.
(n.) A dramatic performance, formerly in vogue, in which the actors wore masks and represented mythical or allegorical characters.
(n.) A grotesque head or face, used to adorn keystones and other prominent parts, to spout water in fountains, and the like; -- called also mascaron.
(n.) In a permanent fortification, a redoubt which protects the caponiere.
(n.) A screen for a battery.
(n.) The lower lip of the larva of a dragon fly, modified so as to form a prehensile organ.
(v. t.) To cover, as the face, by way of concealment or defense against injury; to conceal with a mask or visor.
(v. t.) To disguise; to cover; to hide.
(v. t.) To conceal; also, to intervene in the line of.
(v. t.) To cover or keep in check; as, to mask a body of troops or a fortess by a superior force, while some hostile evolution is being carried out.
(v. i.) To take part as a masker in a masquerade.
(v. i.) To wear a mask; to be disguised in any way.
Example Sentences:
(1) The blocking action may have masked and hindered detection of the stimulatory action of barium in other systems.
(2) Masking experiments are demonstrated for electrical frequency-modulated tone bursts from 1,000 to 10,000 cps and from 10,000 to 1,000 cps with superimposed clicks.
(3) Though immunocytochemistry did not show staining of synaptic regions this may be due to masking of the reactive epitope.
(4) Such factors can mask any interactions between biologic factors of the aging female reproductive system and other social factors that might otherwise detemine fertility during the later reproductive years.
(5) The interresponse-time reinforcement contingencies inherent in these schedules may actually mask the effects of overall reinforcement rate; thus differences in response rate as a function of reinforcement rate when interresponse-time reinforcement is eliminated may be underestimated.
(6) In gastric cancers the major finding was the occurrence of extensive masking of lectin binding sites by sialic acid which was not seen in normal mucosa.
(7) The expression of such secondary and tertiary syphilis is commonly masked and distorted by the long-term effects of subcurative doses of antibiotics; in fact, late latent and tertiary syphilis produce symptoms and immunosuppression similar to the profile of AIDS.
(8) After induction of anesthesia, the airway of those in group A was maintained with a conventional tracheal tube; in group B, with a laryngeal mask airway.
(9) To determine if the type of mechanical ventilation used (ie, face mask, nasal prongs, or endotracheal tube) was associated with GPNN, a matched case-control analysis was performed.
(10) Data were analyzed by investigators who were masked to treatment assignment or phase of study.
(11) The air entrainment devices from oxygen masks of four manufacturers (Henleys Medical Supplies Ltd, Vickers Medical, Intersurgical Ltd, C R Bard International Ltd) were studied.
(12) North Korea's blustering defiance at the annual US-South Korean exercises masks just a little fear that they could easily be turned into an all-out attack, and seems to work on the principle that the more you shout, the safer you will be.
(13) Since headache can often represent the warning symptom of a masked depression, in the present study sulpiride has been administered to patients suffering from nonorganic headache syndromes.
(14) • Police would be given discretion to remove face masks from people on the street "under any circumstances where there is reasonable suspicion that they are related to criminal activity".
(15) Analyses of this artificial curve allow estimation of that part of the internal interactions uninfluenced by the masking effect.
(16) Compared to previous masking studies of orientation selective units, non-oriented units have somewhat broader spatial frequency sensitivity curves, in agreement with primate neurophysiology.
(17) The contralateral masked condition was performed using 30-dB-SL 400-Hz narrow-band masking noise centered at frequency of test tone.
(18) But the research drills down into the data to examine different cohorts separately, and discovers that reassuring overall averages are masking some striking variations.
(19) Older subjects were found to be significantly more susceptible to the backward masking effect over longer delays between the target and masking stimuli.
(20) We have compared an alternative breathing system for preoxygenation comprising a Hudson face mask with high oxygen inflow (48 litre min-1) and a Mapleson A breathing system (100 ml kg-1 min-1).