| carbon source | Any carbon-containing organic molecule (carbohydrate, aminoacid) that an organism can use to produce energy in the form of ATP. (09 Oct 1997) |
|---|---|
| major source | A source that emits, or has the potential to emit, a pollutant regulated under the Clean Air act in excess of a specified rate in a nonattainment area. (05 Dec 1998) |
| common-source epidemic | <microbiology> An epidemic resulting from infection of a large number of people from a single contaminated source. (09 Oct 1997) |
| point source | In photometry, a very small source of light which is regarded as a geometrical point from which light emanates in straight lines in all directions. (05 Mar 2000) |
| power source | Devices that supply energy. (12 Dec 1998) |
| source emission reduction plan | (SERP) A contingency plan developed to reduce emissions during an air quality emergency. (05 Dec 1998) |
| at one | 1. In concord or friendship; in agreement (with each other); as, to be, bring, make, or set, at one, i. E, to be or bring in or to a state of agreement or reconciliation. "If gentil men, or othere of hir contree Were wrothe, she wolde bringen hem atoon." (Chaucer) 2. Of the same opinion; agreed; as, on these points we are at one. 3. Together. "He and Aufidius can no more atone Than violentest contrariety." (Shak) 2. To stand as an equivalent; to make reparation, compensation, or amends, for an offense or a crime. "The murderer fell, and blood atoned for blood." (Pope) "The ministry not atoning for their former conduct by any wise or popular measure." (Junius) Origin: OE. At on, atone, atoon, attone. Source: Websters Dictionary (01 Mar 1998) |
| benzalcoumaran-3-one | 1. 2-benzylidene-3(2H)-benzofuranone;the parent compound of a series of plant pigments; they are substituted coumaranones, and may be formed from chalcones. They are often found as glycosides. 2. A class of compounds based on aurone. Synonym: benzalcoumaran-3-one. (05 Mar 2000) |
| bufenolides (one double bond) | (05 Mar 2000) |
| gel diffusion precipitin tests in one dimension | Precipitin test's in which antigen solution and antibody incorporated in agar are layered in tubes, permitting effective diffusion in the vertical dimension; the antibody-containing agar may be overlaid directly with antigen solution (single (gel) diffusion in one dimension). (05 Mar 2000) |
| Gomori's one-step trichrome stain | <technique> A connective tissue stain that uses haematoxylin and a dye mixture containing chromotrope 2R and light green or aniline blue; muscle fibres appear red, collagen is green (or blue if aniline blue is used), and nuclei are blue to black. (05 Mar 2000) |
| NAD 3 alpha-hydroxy-5 alpha-pregnan-20-one-oxidoreductase | <enzyme> From rat liver microsomes Registry number: EC 1.1.1.- Synonym: nad-3-hp-20-oor (26 Jun 1999) |
| one-carbon fragment | The formyl group or the methyl group that takes part in transformylation or transmethylation reactions; by means of these reactions, a group containing a single carbon atom is added to a compound being biosynthesised, adding a methyl group (as in thymidine formation), adding a hydroxymethyl group (as in serine biosynthesis), or closing a ring (as in purine formation). (05 Mar 2000) |
| one-carbon group transferases | <enzyme> A subclass of transferases that transfer chemical groups containing a single carbon. These include the methyltransferases, the hydroxymethyl and formyl transferases, the carboxyl and carbamoyl transferases, and the amidinotransferases. Registry number: EC 2.1 (12 Dec 1998) |
| one-hand | Employing one hand; as, the one-hand alphabet. See: dactylology. (04 Mar 1998) |