Gases

"Gases" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

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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)


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This graph shows the total number of publications written about "Gases" by people in this website by year, and whether "Gases" was a major or minor topic of these publications.
Bar chart showing 18 publications over 13 distinct years, with a maximum of 4 publications in 2012
To see the data from this visualization as text, click here.