| hydrogenase |
enzyme (small bacterial protein), highly sensitive to the presence of oxygen, capable of causing a reversible catalytic reaction to produce hydrogen from protons and electrons
출처: www.cea.fr/gb/publications/Clefs44/an-clefs44/clef...
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| hydrogen chloride |
(See hydrochloric acid)
출처: www.seventhgeneration.com/site/pp.asp
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| hydrogen |
A chemical element consisting of one proton and one electron. Two hydrogen atoms combine with one oxygen atom to form a molecule of water. Hydrogen serves as the fuel for most fuel cells.
출처: americanhistory.si.edu/fuelcells/glossary.htm
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| hydrogenation |
The chemical addition of hydrogen to a material. In non-destructive hydrogenation, hydrogen is added to a molecule only if, and where, unsaturation with respect to hydrogen exists. In destructive hydrogenation, the operation is carried out under conditions which result in rupture of some of the hydrocarbon chains (cracking); hydrogen is added where the chain breaks have occurred.
출처: www.havoline.com/carcare/glossary/h.html
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| hydrogen |
The most abundant element in the Universe, its most common isotope has a single electron orbiting a proton.. Atomic hydrogen formed from the decoupling of electrons about 300,000 years after the Big Bang. It is the prime fuel for nucleosynthesis in stars. Its fusion into helium is the source of energy for main sequence stars such as our Sun.
출처: outreach.atnf.csiro.au/education/senior/astrophysi...
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