Descriptor in English: | Gases |
Descriptor in Spanish: | Gases |
Descriptor in Portuguese: | Gases |
Descriptor in French: | Gaz |
Tree number(s): |
D01.362 SP4.031.100.200.247.458.014 SP4.097.069 SP8.473.654.412.052.065 |
Scope note: | The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (Grant & Hackh's Chemical Dictionary, 5th ed) |
Annotation: | does not include natural gas ( = NATURAL GAS see FOSSIL FUELS); does not include blood gases ( = OXYGEN /blood or CARBON DIOXIDE /blood); gas embolism = EMBOLISM, AIR; intestinal gases = GASES + INTESTINES /physiol unless clinically referred to as FLATULENCE (Cat C) |
Allowable Qualifiers: |
AD administration & dosage AE adverse effects AG agonists AI antagonists & inhibitors AN analysis BL blood CF cerebrospinal fluid CH chemistry CL classification CS chemical synthesis EC economics HI history IM immunology IP isolation & purification ME metabolism PD pharmacology PK pharmacokinetics RE radiation effects SD supply & distribution ST standards TO toxicity TU therapeutic use UR urine |
DeCS UI: | 5881 |
Descriptor UI: | D005740 |
Date Established: | 1966/01/01 |
Date of Entry: | 1999/01/01 |
Revision Date: | 2014/06/27 |
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CHEMICALS AND DRUGS
Inorganic Chemicals [D01]Inorganic Chemicals -
PUBLIC HEALTH
Environmental Health [SP4]Environmental Health -
PUBLIC HEALTH
Environmental Health [SP4]Environmental Health -
PUBLIC HEALTH
Disasters [SP8]Disasters
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Gases
- Preferred
Concept UI |
M0008995 |
Scope note | The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (Grant & Hackh's Chemical Dictionary, 5th ed) |
Preferred term | Gases |
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