halogens Also found in:Thesaurus,Medical,Encyclopedia,Wikipedia. The elements fluorine, chlorine, bromine, iodine, astatine. Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited Want to thank TFD for its existence?Tell a friend about us, add a li...
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Fig. 1: Depth profiles of environmental and microbial parameters. Oxygen concentration and chlorophyll fluorescence (A,B), viral (C,D) and bacterial concentrations (E,F), VMR (G,H), and FIC (I,J) at each station are displayed. Error bars represent standard deviations of the means of trip...
—a view made even more explicit byHildebrandin 1918 when he wrote that “the term oxidation is applied whenever valence takes on a more positive (or less negative) value. ——这一观点被更加明确地表达,来自希尔德布兰德于1918 年,当时他写道:“术语氧化可被使用,只要化合价呈现出更大的正值(或更小...
They take many other snipes at climate science by the approach of pointing out a term or dependency has been “neglected” (for example, like conduction through the atmosphere) without showing that the neglect has a significant impact – except in the case of conduction where (unwittingly?) the...
atomic number 17,chlorine,Cl- a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water) ...
select article Identifying imprints of externally derived dust and halogens in the sedimentary record of an Iberian alpine lake for the past ∼13,500 years – Lake Peixão, Serra da Estrela (Central Portugal) Research articleAbstract only Identifying imprints of externally derived dust and...
This is especially true for the Lahbari Member, composed of structureless beige mud, a sustained hyperarid period, which we term the Neogene Arabian Desert climaX (NADX). Palynological investigations reveal for the beginning of NADX a herbal halophytic desertic vegetation dominated by Chenopodiaceae...
The syntheses are shown in Scheme 1, wherein formula (II) is abbreviated as Ar—OH (II), and R4, R5, R6, R7, R15 and R16 are the same as defined above, and Hal means halogen. Compounds of formula (II) can be reacted with 1-chloro-2-nitrobenzene derivatives to result in nitrophen...
The term “parent” or “parental sequence” as used herein with reference to a polypeptide indicates the polypeptide from which a “variant” is derived, typically, after one manipulation step (e.g., one round of mutagenesis). The term “engineer” with reference to a polypeptide such as an...