| nitriles | Organic compounds containing the -cn radical. The concept is distinguished from cyanides, which denotes inorganic salts of hydrogen cyanide. (12 Dec 1998) |
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| nitrilo- | <prefix> Prefix indicating a tervalent nitrogen atom attached to three identical groups; e.g., nitrilotriacetic acid, N(CH2COOH)3. (05 Mar 2000) |
| nitrilotriacetate dehydrogenase | <enzyme> From a denitrifying proteobacteria; does not use oxygen; forms iminodiacetate and glyoxylate; requires phenazine methosulfate as electron carrier Registry number: EC 1.7.99.- Synonym: nta dehydrogenase (26 Jun 1999) |
| nitrilotriacetate monooxygenase | <enzyme> Two component monooxygenase; catalyses nitrilotriacetate and NADH to iminodiacetate and glyoxylate and nad in the presence of h and oxygen Registry number: EC 1.14.13.- Synonym: nta monooxygenase (26 Jun 1999) |
| nitrilotriacetic acid | <chemical> Chemical name: Glycine, N,N-bis(carboxymethyl)- (12 Dec 1998) |
| nitrilotriacetic acid monooxygenase | <enzyme> Nadh and o2 required, forms ininodiacetic acid and glyoxylate Registry number: EC 1.7.- (26 Jun 1999) |
| nitrimuriatic acid | An extremely caustic mixture that contains 18 parts nitric acid and 82 parts hydrochloric acid. Synonym: aqua regia, aqua regalis, nitrimuriatic acid. (05 Mar 2000) |
| nitrite | <chemistry> A salt of nitrous acid. Amyl nitrite, a yellow oily volatile liquid, used in medicine as a depressant and a vaso-dilator. Its inhalation produces an instantaneous flushing of the face. Origin: Cf. F. Nitrite. See Niter. Source: Websters Dictionary (01 Mar 1998) |
| nitrite dehydrogenase | <enzyme> Nitrobacter enzyme oxidises nitrite to nitrate with reduction of o2 to water by intermolecular oxygen atom transfer; not the same as nitrate reductase Registry number: EC 1.7.3.- (26 Jun 1999) |
| nitrite reductases | <enzyme> A group of enzymes that oxidise diverse nitrogenous substances to yield nitrite. Registry number: EC 1. (12 Dec 1998) |
| nitrites | Salts of nitrous acid or compounds containing the group no2-. The inorganic nitrites of the type mno2 (where m=metal) are all insoluble, except the alkali nitrites. The organic nitrites may be isomeric, but not identical with the corresponding nitro compounds. (12 Dec 1998) |
| nitritoid reaction | A severe reaction resembling that following the administration of nitrites, sometimes following intravenous administration of arsphenamine or other drugs; consists of flushing of the face, oedema of the tongue and lips, vomiting, profuse sweating, a fall in blood pressure, and sometimes death. (05 Mar 2000) |
| nitrituria | The presence of nitrites in the urine, as a result of the action of Escherichia coli, Proteus vulgaris, and other microorganisms that may reduce nitrates. (05 Mar 2000) |
| nitro dye | <chemical> Dye's in which the chromophore is -NO2, which is so acidic that all dyes in this group are of the acid type; important examples in cytoplasmic staining are picric acid and naphthol yellow S. (05 Mar 2000) |
| nitro- | 1. <prefix> A combining form or an adjective denoting the presence of niter. 2. <chemistry> A combining form (used also adjectively) designating certain compounds of nitrogen or of its acids, as nitrohydrochloric, nitrocalcite; also, designating the group or radical NO2, or its compounds, as nitrobenzene. Nitro group, the radical NO2. Synonym: nitroxyl. (29 Oct 1998) |
Synonyms :
Synonyms :
Synonyms : Nitro-BT, Nitrotetrazolium Blue, Tetrazolium Nitroblue, Blue, Nitrotetrazolium, Nitroblue, Tetrazolium, Tetrazolium, Nitroblue
Synonyms :
Synonyms : Furadantine, Furadoine, Furadonine, Furantoin, Macrodantin, Nitrofurantoin Sodium Salt, Nitrofurantoin, Monohydrate, Monohydrate Nitrofurantoin, Sodium Salt, Nitrofurantoin
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| nisus |
In mythology, Nisus refers to two differerent people: *In Greek mythology, Nisus was King of Megara, and he was invincible as long as a lock of red hair still existed, hidden in his white hair. Minos, King of Crete attacked Megara but Nisus knew he could not be beaten because he still had his lock of red hair. His daughter, Scylla, fell in love with Minos and proved it by cutting the red hair off her father's head. Nisus died and Megara fell to Crete. ...
Ãâó: en.wikipedia.org/wiki/Nisus
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| nitinol |
A shape memory alloy (SMA) (also known as memory metal or smart wire) is a metal that remembers its geometry. After it is deformed, it regains its original geometry by itself during heating (one-way effect) or, at higher ambient temperatures, simply during unloading (pseudo-elasticity). These extraordinary properties are due to a temperature-dependent martensitic phase transformation from a low-symmetry to a highly symmetric crystallographic structure. ...
Ãâó: en.wikipedia.org/wiki/Nitinol
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| nitrohydrochloric acid |
Aqua regia (Latin for "royal water") is a highly corrosive, fuming yellow liquid, formed by a fresh mixture of concentrated nitric acid (otherwise known as aqua fortis) and concentrated hydrochloric acid, usually in the ratio of one to three. It is one of the few reagents able to dissolve gold and platinum. It was so named because it can dissolve the so-called royal, or noble metals, although tantalum and a few other extremely passive metals are able to withstand it. ...
Ãâó: en.wikipedia.org/wiki/Nitrohydrochloric_acid
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| Nix |
A "Unix-like" operating system is one that behaves in a manner similar to a UNIX system, while not necessarily conforming to or being certified to any version of the Single UNIX Specification. ...
Ãâó: en.wikipedia.org/wiki/*NIX
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| nicotine |
Nicotine is an organic compound, an alkaloid found naturally throughout the tobacco plant, with a high concentration in the leaves. It is considered a carcinogen, and constitutes 0.3 to 5% of the plant by dry weight. The biosynthesis takes place in the roots and it is accumulated in the leaves. It is a potent nerve poison and is included in many insecticides. ...
Ãâó: en.wikipedia.org/wiki/Nicotine
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| NI | nocturnal prowler of western United States and Mexico |
|---|---|
| NI | human excreta used as fertilizer |
| NI | an emotional episode (usually in young children) in which the person awakens in terror with feelings of anxiety and fear but is unable to remember any incident that might have provoked those feelings |
| NI | the ability to see in reduced illumination (as in moonlight) |
| NI | a watch during the night (as from midnight to 8 a.m.) |
| NI | a watchman who works during the night |
| NI | any of several cacti of the genus Cereus |
| NI | any of several cacti of the genus Hylocereus |
| NI | any of several night-blooming cacti of the genus Selenicereus |
| NI | a fishing line with baited hooks left in the water to catch fish over night |
| NI | lingerie consisting of a loose dress designed to be worn in bed by women |
| NI | the ability to see in reduced illumination (as in moonlight) |
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