Brown, Alexander

Crum Brown, Alexander. On the Theory of Chemical Combination, M.D. thesis. University of Edinburgh, 1861. Published verbatim by Edinburgh Neill, 1879. 

Shortly after the tetravalent nature of carbon was proposed, extensions to the Kekule-Couper theory were made w7hen the possibility of multiple bonding between atoms was suggested. Emil Erlenmeyer proposed a carbon-carbon triple bond for acetylene, and Alexander Crum Brown proposed a carbon-carbon double bond for ethylene. In 1865, Kekule provided another major advance when he suggested that carbon chains can double back on themselves to form rings of atoms. 

Brown, James Campbell and Alexander Watt. Catalogue of books illustrating the history of alchemy and early chemistry. Liverpool , 1890. lip. 

Stirpe, Fiorenzo, Luigi Barbieri, Ada Abbondanza, Anna Ida Falasca, Alex N.F. Brown, Kirsten Sandvig, Sjur Olsnes, and Alexander Pihl. "Properties of Volkensin, a Toxic Lectin from Adenia volkensii." The Journal of Biological Chemistry 260 (1985) 14589-595. 

With the exception of some unique symbols of William Higgins in 1789, generally, straight lines appeared in published chemical formulas only when Archibald Couper introduced them in 1858 to indicate valences (units of atomicity, saturation capacity, or quantivalence).77 Whereas innocent accent marks or superscript dashes had been used at midcentury to indicate valence or value, straight lines now suggested a less abstract meaning, despite disclaimers like Alexander Crum Brown s that the lines indicated the "chemical," not "physical," positions of atoms. 78... 

Clear, colorless, watery liquid with a penetrating or pungent rubber-like odor. Becomes yellow to yellowish-brown on exposure to air. Experimentally determined odor threshold concentrations in air for inhibited and unhibited styrene were 0.1 and 0.047 ppmv, respectively (Leonardos et al., 1969). Experimentally determined detection and recognition odor threshold concentrations were 220-640 pg/m (52-150 ppbv) and 64 pg/m (15 ppbv), respectively (Heilman and Small, 1974). At 40 °C, the average odor threshold concentration and the lowest concentration at which an odor was detected were 65 and 37 pg/L, respectively. At 25 °C, the lowest concentration at which a taste was detected was 94 pg/L, respectively (Young et al., 1996). The average least detectable odor threshold concentrations in water at 60 °C and in air at 40 °C were 3.6 and 120 pg/L, respectively (Alexander et al., 1982). 

Baja) G, Alexander SR, Browne R, Sakarcan A, Seikaly MGorfm (1996) Pediatr Nepbrol 10 25... 

Boswell. G. A., Jr.. 21 Brand, William W., 18 Brewster, James H., 7 Brown, Herbert C.. 13 Brown, Weldon G., 6 Bruson, Herman Alexander, 5 Bublitz, Donald E., 17 Buck, Johannes S., 4 Bufali, Simone, 68 Buisine, Olivier, 68 Buike, Steven D., 26 Butz, Lewis W., 5... 

Browne, C. A., Alexander von Humboldt as historian of science in Latin... 

After N. G. Sefstrom had discovered vanadium in a soft cast iron from Eckersholm, Sweden, no mineral containing it as an essential constituent was known until Wohler analyzed the specimen of brown lead from Zimap n which del Rio had sent to Europe by Baron Alexander von Humboldt (73). Wohlers researches (45) proved that he had been... 

Following the publication of stractural theory for all to examine, the next major players in its development were the Russian, Aleksandr Mikhailovich Butlerov (1828-1886), the Scot, Alexander Cmm Brown (1838-1922), and the Austrian, Joharm Josef Loschmidt (1821-1895). 

Humboldt, Alexander von, 1847-8. Cosmos Sketch of a Physical Description of the Universe, translated under the superintendence of E. Sabine, 2 vols. London Longman, Brown, Green Longmans. 

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