| H+ | hydrogen ion |
|---|---|
| [H+] | hydrogen ion concentration |
| HCl | hydrogen chloride |
| HDP | hexose diphosphate; high-density polyethylene; hydrogen diphosphonate; hydroxydimethylpyrimidine |
| HF | Hageman factor; haplotype frequency; hard filled [capsule]; hay fever; head of fetus; head forward; ... |
| hydrogenium | <chemistry> Hydrogen; called also in view of its supposed metallic nature. Origin: NL. See Hydrogen. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| hydrogenize | <chemistry> To combine with hydrogen; to treat with, or subject to the action of, hydrogen; to reduce; contrasted with oxidize. Origin: Hydrogenised; Hydrogenising. Source: Websters Dictionary (01 Mar 1998) |
| hydrogenlyase | <enzyme> An enzyme which oxidizes hydrogen (removes its electrons) and attaches it to another molecule. (09 Oct 1997) |
| hydrogenobyrinic acid synthase | <enzyme> Pseudomonas denitrificans enzyme which is proposed to transfer a methyl group from c-11 to c-12 of precorrin-8x Registry number: EC 5.4.99.- Synonym: cobh gene product (26 Jun 1999) |
| hydrogenosome | <cell biology> Organelle found in certain anaerobic trichomonad and some ciliate protozoa: contains hydrogenase and produces hydrogen from glycolysis. Origin: Gr. Soma = body (05 May 1997) |
| hydrogensulfite reductase | <enzyme> Catalyses the reduction of sulfite mainly to trithionate with concomitant formation of thiosulfate and sulfide in the dissimilatory sulfate reduction pathway; see also trithionate reductase system Registry number: EC 1.8.99.3 Synonym: bisulfite reductase, dissimilatory sulfite reductase, desulfoviridin, desulforubidin, desulfofuscidin (26 Jun 1999) |
| hydrogen bromide |
a colorless gas that yields hydrobromic acid in solution with water
Ãâó: wordnet.princeton.edu/perl/webwn
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|---|---|
| hydrogen chloride |
a colorless corrosive gas (HCl)
Ãâó: wordnet.princeton.edu/perl/webwn
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| hydrogen bond |
a relatively weak, primarily electrostatic, bond between a hydrogen atom bound to a highly electronegative element (such as oxygen or nitrogen) in a given molecule, or part of a molecule, and a second highly electronegative atom in another molecule or in a different part of the same molecule. The hydrogen bond is generally represented by three dots, eg, X
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| hydrogen |
A hydrogen car is an automobile which uses hydrogen (usually obtained from decomposition of methane, and sometimes from water using electrolysis) as its primary source of power for locomotion. The main benefit of using pure hydrogen as a power source is that it uses oxygen from the air to produce only water vapor as exhaust, moving the source of atmospheric pollution from many cars back to a single power plant, where it can be more easily dealt with. ...
Ãâó: en.wikipedia.org/wiki/Hydrogen_(car)
|
| hydrogen cyanide |
Hydrogen cyanide is a chemical compound with chemical formula H-C≡N. A solution of hydrogen cyanide in water is called hydrocyanic acid or prussic acid. Pure hydrogen cyanide is a colorless, very poisonous, and highly volatile liquid that boils slightly above room temperature at 26
Ãâó: en.wikipedia.org/wiki/Hydrogen_cyanide
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