gas

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gas

 [gas]
any elastic aeriform fluid in which the molecules are widely separated from each other and so have free paths.
alveolar gas the gas in the alveoli of the lungs, where gas exchange with the capillary blood takes place.
blood g's the partial pressures of oxygen and carbon dioxide in blood; see blood gas analysis.
laughing gas nitrous oxide.
gas pains pains caused by distention of the stomach or intestines by accumulation of air or other gases. The presence of gas is indicated by distention of the abdomen, belching, or discharge of gas through the rectum. Gas-forming foods include highly flavored vegetables such as onions, cabbage, and turnips; members of the bean family; and fruits such as melons and raw apples. Some seasonings and other chemical irritants also produce gas.
tear gas any of various irritant vapors dispensed by aerosol and causing pain and severe lacrimation in humans; some also cause irritation of exposed mucous membranes as well as vomiting. Common ones include chloroacetophenone (CN), o-chlorobenzylidenemalononitrile (see CS), and dibenz(b,f)-1,4-oxazepine (see cr); the most common of the three is CS (also known as mace).

GAS

Abbreviation for group A streptococci , under streptococcus.

gas

(gas),
1. A thin fluid, such as air, capable of indefinite expansion but convertible by compression and cold into a liquid and, eventually, a solid.
2. In clinical practice, a liquid entirely in its vapor phase at one atmosphere of pressure because ambient temperature is above its boiling point.
[coined by J.B. van Helmont, Flemish chemist and physician, 1579-1644]

gas

(găs)
n. pl. gases or gasses
1.
a. The state of matter distinguished from the solid and liquid states by relatively low density and viscosity, relatively great expansion and contraction with changes in pressure and temperature, the ability to diffuse readily, and the spontaneous tendency to become distributed uniformly throughout any container.
b. A substance in the gaseous state.
2. A gaseous asphyxiant, irritant, or poison.
3. A gaseous anesthetic, such as nitrous oxide.
4.
a. Flatulence.
b. Flatus.
v. gassed, gassing, gases or gasses
v.tr.
1. To treat chemically with gas.
2. To overcome, disable, or kill with poisonous fumes.

GALNS

A gene on chromosome 16q24.3 that encodes N-acetylgalactosamine-6-sulfatase, a lysosomal exohydrolase required for the degradation of glycosaminoglycans, keratan sulfate and chondroitin 6-sulfate.

Molecular pathology
Defects of GALNS cause Morquio A syndrome, a lysosomal storage disease.

gas

A volatilized liquid. See Biogas, Compressed gas, Flammable gas, Greenhouse gas, Mustard, Natural gas, Oxidant gas, Phosgene gas Occupational medicine A gas phase contaminant. See Inhalant.

gas

(gas)
1. Fluid, like air, capable of indefinite expansion but convertible by compression and cold into a liquid and, eventually, a solid.
2. In clinical practice, a substance entirely in its vapor phase at 1 atmosphere of pressure because ambient temperature is above its boiling point.
[coined by J.B. van Helmont, Flemish chemist and physician, 1579-1644]

gas

(gas)
1. A thin fluid, such as air, capable of indefinite expansion but convertible by compression and cold into a liquid and, eventually, a solid.
2. In clinical practice, a liquid entirely in its vapor phase at one atmosphere of pressure because ambient temperature is above its boiling point.
[coined by J.B. van Helmont, Flemish chemist and physician, 1579-1644]

Patient discussion about gas

Q. why do i have gas and bloating my bowels are weird and my stomach is sour also. i have pain in the top of my stomach

A. There are many different things that can cause them. Do you also suffer from diarrhea? Do you have diabetes? Do you have pain that is relieved by eating or after going to the bathroom?

Among the more common causes there are IBS (http://en.wikipedia.org/wiki/Irritable_bowel_syndrome), diabetes, malabsorption (e.g. lactose intolerance http://en.wikipedia.org/wiki/Lactose_intolerance or celiac http://en.wikipedia.org/wiki/Coeliac_disease), all of these, unfortunately, can't be diagnosed over the net, so if it keeps bothering you or if you have warning sign (such as Nocturnal abdominal pain (sleep awakening), Weight loss, Blood in the stool , Severely tender abdomen , Succussion splash , Fever , Vomiting , fatty diarrhea , New onset diarrhea) you should see a doctor.

Q. I often have gases in my stomach. And it hurts. Is there specific food I should avoid? thanks

A. Why don't you try to run a log of what you eat and how did you feel after that? The digestive system of each of us is different, so it may not be possible to give you advice that would be good for you specifically. If these complaints bothers you, you may also want to consult a docotr.

www.nlm.nih.gov/medlineplus/ency/article/003124.htm

More discussions about gas
References in periodicals archive ?
| Timothy Curtin, left, was a boiler engineer at Nechells gasworks, right, in the 1950s - the gas holders have now been demolished
ALERT: Emergency crews in action after the Warrington gasworks bombing attack
My interest stems from the fact that my grandfather, Samuel Milner, was foreman fitter at the gasworks during World War II, and told us all about the difficulties at the time that he and his fitters had to deal with in providing access to, and stability of, the structure of the gasometer, for the bomb disposal team to defuse the land mine.
The site is on the former Crindau gasworks site and replaces the old supermarket on Heidenheim Drive.
GASWorkS provides Windows-based steady-state network modeling tools.
CLASSY Pollok strolled into the last eight of the Central League Cup with a stunning display of attacking football at Gasworks Park.
A novelty beer burglar alarm is available from Gasworks, Inc.
Installed in three sympathetic venues (Technopolis, the city's old gasworks; the new annex of the Benaki Museum; and the Ergostasio, at the School of Fine Arts), "Outlook" broke no new ground, nor was there a governing theoretical concept.
(Fourth invitee Gottfried Bohm's proposal, also stadtkrone-like, was more akin to a Wagnerian gasworks.) Surrounded by heavily trafficked streets, the orthogonal site dips from an easterly corner--the formal and photogenic entry court--to the west, where a steel ribbon canopy signals entry to REDCAT, the Roy and Edna Disney CalArts Theater, a supplementary arts space accommodated within the parking structure as it rises above street level.
Eugene Madsen of Cornell University and his colleagues tested their technique at a coal tar waste site associated with an old gasworks. The researchers labeled a test sample of naphthalene--a common, seemingly benign coal tar component--with the isotope carbon-13 and released the chemical into the soil.
It's a barren, toxic place defined by a typically Cronenbergain recurrent image: a polluting gasworks that looms malingly over-head.
In 1970 a cleaner in Belfast's Gasworks had a dream--of Northern Ireland's women working together for peace.