(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.
Stopcock
Definition:
(n.) A bib, faucet, or short pipe, fitted with a turning stopper or plug for permitting or restraining the flow of a liquid or gas; a cock or valve for checking or regulating the flow of water, gas, etc., through or from a pipe, etc.
(n.) The turning plug, stopper, or spigot of a faucet.
Example Sentences:
(1) Using a conventional mixture of two units of packed red cells, two units of fresh frozen plasma and 500 ml crystalloid, a single line and a driving pressure of 300 mmHg, the highest flow in our study was 970 ml.min-1 (2.8 mm catheter, no stopcock).
(2) A three-way stopcock with double syringe allows concomitant administration of atropine to counteract the cholinergic side effects of edrophonium.
(3) Stopcocks with larger inner diameters may improve drainage over that achievable with the stopcocks that are currently available.
(4) The use of a three-way stopcock and connecting tube between catheter and syringe is suggested.
(5) Finally it is emphasized that careful handling of the catheters and avoidance of stopcocks and air bubbles are essential for obtaining accurate and reproducible values.
(6) With the prototype stopcock, drainage of water alone was reduced by 0-9% for the catheters of different sizes.
(7) The standard stopcock decreased drainage efficiency for these catheters by 13-42%.
(8) If the stopcock in the boy's toilet begins to stick, ring Michael Gove.
(9) Two outbreaks of pseudobacteraemia occurred related to the arterial line stopcock and to heparin used for biochemistry tests.
(10) Hematocrit and blood gases were measured after withdrawing 0, 2, 4, 6, 8, and 10 ml of flush-blood solutions before sampling from a 20-ga radial artery catheter and 7-ft pressure tubing and stopcock.
(11) Patients were randomized to receive fentanyl initially by an epidural (group A, n = 8) or IV (group B, n = 8) catheter for 6 h, after which they were crossed-over to the alternate route by means of a hidden three-way stopcock.
(12) We found that use of the novel sampling system resulted in significantly fewer episodes of internal bacterial contamination of the arterial monitoring line (7%) than did the use of a stopcock system (61%).
(13) A closed system device with teflon needle, sideholes, and attached stopcock was designed and evaluated for diagnosis and evacuation of neonatal pneumothoraces.
(14) The results showed that both sample volume and discarded volume required smaller amount with a T-connecter than with a three-way stopcock to obtain more accurate measurements.
(15) The safety and efficacy of high-pressure injection through a stopcock was tested using a disposable flow switch model.
(16) A double stopcock technique is described for sampling blood from umbilical catheters.
(17) Superior thyroid artery cannulation during carotid endarterectomy and coupling the cannula to a three-way stopcock with an anaeroid manometer allows the surgical team in the operating field to monitor mean pressures and to draw blood samples for gas analysis from the common, the internal, or the external carotid artery.
(18) Fluid or air may be removed from the chest intermittently with a three-way stopcock attached to the thoracostomy tube and a 60-ml syringe.
(19) A sample containing the dwell volume of the catheter and the stopcock (1 ml) was withdrawn and discarded, followed by fifteen 1 ml samples being taken for analysis.
(20) The electromyograms of the rectus abdominis (EMGra) and of the diaphragm (EMGdi) have been recorded on human subjects immersed at two bath temperatures (TW), 25 and 40 degrees C. The recordings were obtained during a calibrated isometric contraction sustained for 20 s against a closed stopcock at functional residual capacity (FRC) level for EMGra (expiratory effort) and at pulmonary volume greater than 90% vital capacity for EMGdi and EMGra (inspiratory effort).