(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.
Heartburn
Definition:
(n.) An uneasy, burning sensation in the stomach, often attended with an inclination to vomit. It is sometimes idiopathic, but is often a symptom of often complaints.
Example Sentences:
(1) Nausea and heartburn occurred in 3 cases only and were controlled by reducing the dosage.
(2) A 62-year-old man with severe heartburn and persistent hiccups despite numerous diagnostic tests and therapeutic drug trials presented to our clinic.
(3) We speculate that hormone-related impairment of distal oesophageal clearance mechanisms may have a crucial bearing on whether heartburn develops in those individuals at greatest risk.
(4) Heartburn was induced by a meal consisting of chili, black coffee, and a spicy tomato drink mix.
(5) Heartburn was the most common symptom, more frequent in females than in males (p less than 0.01).
(6) Primary symptoms include dysphagia, odynophagia, heartburn and central chest pain.
(7) Symptoms of heartburn, regurgitation, and dysphagia were absent or minimal in most patients.
(8) The occurrence of heartburn did not correlate with the extent of reflux in the pH study.
(9) However, onions significantly increased all measures in heartburn subjects, compared with the no-onion condition, and compared with normals under the onion condition.
(10) Heartburn and epigastric pain, monitored every other week, were significantly relieved by both treatments, but to a significantly greater extent (70% vs 20% on average, p less than 0.01) and significantly faster (p less than 0.01) in the presence of triletide.
(11) 90 patients living more than 3 months complained of the following: heartburn, 18 (20%); reflux, 12 (13.3%); retrosternal pain, 3 (3.3%); stenotic sensation, 23 (25.6%); diarrhea, 10 (11.1%); abdominal pain, 14 (15.6%); and dumping syndrome, 6 (6.7%).
(12) Only ranitidine significantly reduced heartburn frequency and severity.
(13) 1) Symptom relief: Cisapride, usually at a dose of 10 mg t.i.d., was superior to placebo and metoclopramide in relief of daytime and night-time heartburn and regurgitation.
(14) Although heartburn, thought to indicate reflux of gastric contents into the oesophagus, occurs frequently in pregnant women during the last trimester, its aetiology is not clear.
(15) No patient experienced symptoms while swallowing water but one complained of heartburn and one developed symptomatic oesophageal 'spasm' during eating.
(16) Six subjects had mild subjective side effects after zindotrine (headache, dizziness, vertigo, flushing, and heartburn) compared with one report of lightheadedness after placebo.
(17) Logistic regression analysis showed increased risk of suffering heartburn with increasing gestational age (P < 0.0001), pre-pregnancy heartburn (P < 0.0001), parity (P < 0.0001) and inversely with maternal age (P < 0.05) but not with body mass index before pregnancy, race, or weight gain in pregnancy.
(18) Patients with gastroesophageal reflux often describe heartburn after "spicy meals."
(19) Heartburn, the most common presenting symptom, was abolished in 85.5% and epigastric pain in 84.6% of patients.
(20) Despite randomization of endoscopically normal patients, those treated with ranitidine had significantly more heartburn at baseline.