methane determination
111X-ray fluorescence — (XRF) is the emission of characteristic secondary (or fluorescent) X rays from a material that has been excited by bombarding with high energy X rays or gamma rays. The phenomenon is widely used for elemental analysis and chemical analysis,… …
112Enceladus (moon) — Infobox Planet name = Enceladus alt names = Saturn II adjectives = Enceladean caption = Degraded craters, fractures and disrupted terrain in Cassini mosaic of the north polar region of Enceladus bgcolour = #a0ffa0 discovery = yes discoverer =… …
113Carbon tetrachloride — IUPAC name …
114Carbon credit — This article deals with carbon credits for international trading. For carbon credits for individuals, see personal carbon trading. For voluntary schemes, see carbon offset. Part of a series on …
115Asphyxiant gas — dablink|For main article see Asphyxia. An asphyxiant gas is a non toxic or minimally toxic gas which dilutes or displaces the oxygen containing atmosphere, leading to death by asphyxiation if breathed long enough. Toxic gases in large enough… …
116Willard Frank Libby — (17 décembre 1908, Grand Valley, Colorado, États Unis 8 septembre 1980, Los Angeles) est un physicien et chimiste américain connu pour son rôle dans le développement de la méthode de datation par le carbone 14, qui a révolutionné l archéologie.… …
117plant — plantable, adj. plantless, adj. plantlike, adj. /plant, plahnt/, n. 1. any member of the kingdom Plantae, comprising multicellular organisms that typically produce their own food from inorganic matter by the process of photosynthesis and that… …
118Saturn — /sat euhrn/, n. 1. an ancient Roman god of agriculture, the consort of Ops, believed to have ruled the earth during an age of happiness and virtue, identified with the Greek god Cronus. 2. Astron. the planet sixth in order from the sun, having an …
119Ukraine — /yooh krayn , kruyn , yooh krayn/, n. a republic in SE Europe: rich agricultural and industrial region. 50,684,635; 223,090 sq. mi. (603,700 sq. km). Cap.: Kiev. Russian, Ukraina. Formerly, Ukrainian Soviet Socialist Republic. * * * Ukraine… …
120Pollution des sols — Certaines fumées industrielles chargées de résidus de combustion et de divers polluants sont une des sources de retombées susceptibles de polluer les sols …
