| sp | act specific activity |
|---|---|
| TEFRA | Tax Equity and Fiscal Responsibility Act |
| TSCA | Toxic Substances Control Act |
| activated clotting time | The most common test used for coagulation time in cardiovascular surgery. (05 Mar 2000) |
|---|---|
| activated complex | <chemistry> State of highest energy during a reaction. When reactants form the activated complex, bond breaking and bond formation is occurring. Synonym: transition state. (09 Jan 1998) |
| activated fatty acid | A fatty acyl-coenzyme A thiol ester. (05 Mar 2000) |
| activated glucose | A nucleoside diphosphoglucose such as UDP glucose. (05 Mar 2000) |
| activated macrophage | A mature macrophage, in an active metabolic state, that is cytotoxic to tumour/target cells, usually following exposure to certain cytokines. Synonym: armed macrophage. (05 Mar 2000) |
| activated partial thromboplastin time | The time needed for plasma to form a fibrin clot following the addition of calcium and a phospholipid reagent; used to evaluate the intrinsic clotting system. (05 Mar 2000) |
| activated resin | Autopolymerizing resin, any resin that can be polymerised by chemical catalysis rather than by the application of heat; used in dentistry for dental restoration, denture repair, and impression trays. Synonym: activated resin, cold cure resin, cold-curing resin, quick cure resin, self-curing resin. (05 Mar 2000) |
| activated sludge | See: activated sludge method. (05 Mar 2000) |
| activated sludge method | A method of sewage disposal in which the sewage is treated with 15% bacterially active, liquid sludge, which is produced by repeated vigorous aeration of fresh sewage to form floccules or sediment; when this flocculation process is complete, the resulting activated sludge contains large numbers of bacteria, together with yeasts, molds, and protozoa, which actively effect the oxidation of organic compounds; this mixture is piped to a sedimentation tank, the effluent from which is completely treated sewage. (05 Mar 2000) |
| activated sludge process | <procedure> A method of treating sewage and wastewater through microbial oxidation. Sewage previously treated in settling tanks is aerated to encourage the growth of nonpathogenic aerobic microorganisms (bacteria, yeasts, moulds and protozoans) which break the organic matter down into carbon dioxide, water and simple salts. After this activated sludge is produced, the wastewater undergoes further processing through anaerobic digestion, filtering and chlorination. (29 Dec 1997) |
| activated state | <chemistry, radiobiology> An atom or nucleus which possesses more energy than its ground state energy. (16 Dec 1997) |
| activation | <radiobiology> Activation occurs when a particle interacts with an atomic nucleus, shifting the nucleus into an unstable state, and causing it to become radioactive. In fusion research, where deuterium-tritium is a common fuel mixture, the neutron released when (D + T) combine to form (4He + n) can activate the reactor structure. In this case the 4He is inert, the neutron sticks to another nucleus, and the neutron + nucleus reaction creates an actvation product. Sometimes called radioactivation. See: activation product, activation analysis. (09 Oct 1997) |
| activation analysis | <radiobiology> Method for identifying and measuring chemical elements in a sample of material. Sample is first made radioactive by bombardment with neutrons, charged particles, or gamma rays. Newly formed radioactive atoms in the sample then give off characteristic radiations (such as gamma rays) that tell what kinds of atoms are present, and how many. (09 Oct 1997) |
| activation energy | <chemistry> The amount of energy (expressed in joules) that is needed to convert all the molecules in one mole of a reacting substance from a ground state to the transition state. (06 May 1997) |
| activation product | <radiobiology> The unstable nucleus formed when activation occurs. (See activation above.) (09 Oct 1997) |
Synonyms : ATF1 Transcription Factor, Activating Transcription Factor-1, Transcription Factor, ATF1
Synonyms : ATF2 Transcription Factor, CRE-Binding Protein 1, CRE Binding Protein 1, Transcription Factor, ATF2
Synonyms : ATF3 Transcription Factor, Activating Transcription Factor-3, Transcription Factor, ATF3
Synonyms : ATF4 Transcription Factor, Tax-Responsive Enhancer Element B67, Tax Responsive Enhancer Element B67, Transcription Factor, ATF4
Synonyms : ATF6 Transcription Factor, Transcription Factor, ATF6
| active |
tending to become more severe or wider in scope; "active tuberculosis" engaged in or ready for military or naval operations; "on active duty"; "the platoon is combat-ready"; "review the fighting forces" disposed to take action or effectuate change; "a director who takes an active interest in corporate operations"; "an active antagonism"; "he was active in drawing attention to their grievances" taking part in an activity; "an active member of the club"; "he was politically active"; "the participating organizations" full of activity or engaged in continuous activity; "an active seaport"; "an active bond market"; "an active account" exerting influence or producing a change or effect; "an active ingredient" in operation; "keep hope alive"; "the tradition was still alive"; "an active tradition" of the sun; characterized by a high level activity in sunspots and flares and radio emissions expressing that the subject of the sentence has the semantic function of actor: "Hemingway favors active constructions" expressing action rather than a state of being; used of verbs (e.g. `to run') and participial adjectives (e.g. `running' in `running water') active agent: chemical agent capable of activity (of e.g. volcanos) erupting or liable to erupt; "active volcanos" active voice: the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb; "`The boy threw the ball' uses the active voice" a person devoted to the active life engaged in full-time work; "active duty"; "though past retirement age he is still active in his profession"
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| activator |
(biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription
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| Actinomycetaceae |
filamentous anaerobic bacteria
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| actinomycetous |
actinomycetal: of or belonging to the actinomycetes
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| actinomycin |
any of various red antibiotics isolated from soil bacteria
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| Act | of or related to actinomycosis infection |
|---|---|
| Act | parasites of worms |
| Act | parasites of worms |
| Act | any of a series of radioactive elements with atomic numbers 89 through 103 |
| Act | protozoa having stiff rodlike radiating pseudopods |
| Act | heliozoans |
| Act | (medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance |
| Act | no alternation of generations the medusoid phase being entirely suppressed: sea anemones |
| Act | sessile marine coelenterates including solitary and colonial polyps |
| Act | something done (usually as opposed to something said) |
| Act | the most important or interesting work or activity in a specific area or field |
| Act | a military engagement |