A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Pressures
D002845
Chromatography
Techniques used to separate mixtures of substances based on differences in the relative affinities of the substances for mobile and stationary phases. A mobile phase (fluid or gas) passes through a column containing a stationary phase of porous solid or liquid coated on a solid support. Usage is both analytical for small amounts and preparative for bulk amounts.
Chromatographies
D001580
Benzopyrenes
A class of chemicals that contain an anthracene ring with a naphthalene ring attached to it.
Benzpyrene
D012906
Smoke
Visible gaseous suspension of carbon and other particulate matter emitted from burning substances.
D014026
Nicotiana
A plant genus of the family SOLANACEAE. Members contain NICOTINE and other biologically active chemicals; the dried leaves of Nicotiana tabacum are used for SMOKING.