| 词汇 | amine |
| 释义 | amine noun[ C ] uk /ˈeɪ.miːn/ us /əˈmiːn/ any of a group of substances formed from ammonia by replacing hydrogen atoms with a group of atoms containing carbon胺 Chemicals, chemical compounds & gases acetic acid acetone acrolein acrylamide activated charcoal adenine agglomerate ethyl alcohol H2O HCFC HFC hyaluronic acid hydrochloric acid hydrochlorofluorocarbon laughing gas limescale metho meths oxyacetylene tartaric acid It was early recognized that the alkaloids were complex amines or ammonia derivatives. Strychnine has been found to be a tertiary amine. amine | American Dictionaryamine noun[ C ] us/əˈmin, ˈæm·in/ chemistry any of a group of substances formed from ammonia by replacing hydrogen atoms with a group of atoms containing carbon Examples of amineamine In fact, there are specific postnatal critical periods and developmental sequences for the appearance of the biogenic amines dopamine and noradrenaline. The active compounds share a common structural motif : a protonatable amine moiety separated from an ionized sulfonate moiety by 2 or 3 methylene groups. In the other isomers, where the two groups are linked together, the carbonyl group attracts the electrons, which destabilizes the protonated amine. Biogenic amines were selected on the basis of their effects during frequency of movement assays. Table 2 depicts the data for the biogenic amines and their metabolites under basal and separation conditions. The major inactivation of biogenic amines is performed by monoamine oxidase, an enzyme located solely in mitochondria. Trace amines are endogenous amine compounds structurally related to the classical monoamine neurotransmitters. The effects of the fetal environment on the development of biogenic amine systems have received less attention than genetic or postnatal environmental factors. The primary aim was to determine whether prenatal stress persistently alters the activity of brain biogenic amine systems. Clinical treatment was instituted initially, using high doses of diuretics, peripheral vasopressor and vasodilator amines. But this problem would not hamper data collection on hydrogen bonds to amines, since amino protons exchange readily with solvent. A longitudinal study of the effects of different rearing environments on cerebrospinal fluid norepinephrine and biogenic amine metabolites in rhesus monkeys. Consequently, the same isomers were studied as before, first protonated on the acid group, then on the amine group. Red regions are around the carboxyl oxygens, and blue regions are around hydrogens and the amine group. Biotinylated dextran amine as an anterograde tracer for single- and double-label studies. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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