methane determination
91Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… …
92petroleum — petroleous, adj. /peuh troh lee euhm/, n. an oily, thick, flammable, usually dark colored liquid that is a form of bitumen or a mixture of various hydrocarbons, occurring naturally in various parts of the world and commonly obtained by drilling:… …
93triton — /truy ton/, n. Physics. a positively charged particle consisting of a proton and two neutrons, equivalent to the nucleus of an atom of tritium. Cf. deuteron. [1930 35; < Gk tríton, neut. of trítos THIRD, equiv. to trí TRI + ton neut. adj. suffix; …
94Triton — Tritonic /truy ton ik/, adj. /truyt n/, n. 1. Class. Myth. a son of Poseidon and Amphitrite, represented as having the head and trunk of a man and the tail of a fish, and as using a conch shell trumpet. 2. Astron. a moon of Neptune. 3. (l.c.) any …
95building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
96mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph …
97Discoveries of extrasolar planets — See also: List of extrasolar planet firsts Number of extrasolar planet discoveries per year as of 10 July 2011, with colors indicating method of detection …
98Oxydo-réduction en chimie organique — Les réactions d oxydo réduction sont d une importance capitale en chimie organique. Néanmoins, la structure des composés rend l approche assez différente de ce que l on observe en chimie inorganique ou en électrochimie notamment parce que les… …
99BIOLOGIE — Le terme «biologie» ( 廓晴礼﨟, vie, et礼塚礼﨟, science) désigne la science qui étudie la vie. Il est utilisé, pour la première fois, par l’Allemand G. R. Treviranus (1802), dans Biologie oder Philosophie der lebenden Natur (Biologie ou Philosophie de… …
100PÉTROLE - L’exploitation des gisements — S’il incombe aux équipes de prospection de trouver des gisements, le rôle de celles qui sont chargées de la production est d’en tirer le meilleur parti. Essentiellement empirique d’abord, l’extraction des hydrocarbures, pétrole et gaz naturel,… …
