| TCD | tapetochoroidal dystrophy; T-cell depletion; thermal conductivity detector; tissue culture dose; tra... |
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| TC | target cell; taurocholate; temperature compensation; teratocarcinoma; tertiary cleavage; tetracyclin... |
| AID | acquired immunodeficiency disease; acute infectious disease; acute ionization detector; Agency for I... |
| ECD | ectrodactyly; electrochemical detector; electron capture detector; endocardial cushion defect; enzym... |
| CCV | channel catfish virus; conductivity cell volume |
| EC | Electrical conductivity |
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| TOBEC | Total Body Electrical Conductivity |
| DTA | Differential Thermal Analysis |
| LTK | Laser thermal keratoplasty |
| TEA | Thermal Energy Analyzer |
| thermal conductivity | <radiobiology> Degree to which a substance transmits heat. (basic definition, I believe, is: (heat flow) = (thermal conductivity) (temperature gradient)) (09 Oct 1997) |
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| conductivity | <radiobiology> Degree to which a substance transmits (conducts) a given physical property, such as heat or electricity. See: electrical conductivity, thermal conductivity. (09 Oct 1997) |
| hydraulic conductivity | Ease of pressure filtration of a liquid through a membrane; specifically, Kf = η(Q/A) (dx/dP), where Kf = hydraulic conductivity, η = viscosity of the liquid being filtered, Q/A = volume of liquid filtered per unit time and unit area, and dx/dP = reciprocal of the pressure gradient through the membrane; solute concentrations should be identical on both sides of the membrane. Also applied more loosely to measurements on a total membrane of unknown area and thickness with unmeasured fluid viscosity (K = Q/dP). (05 Mar 2000) |
| solid-state detector | A detector that uses a crystalline scintillating material rather than an ionization chamber to detect or measure radiation. (05 Mar 2000) |
| detector | One who, or that which, detects; a detecter. "A deathbed's detector of the heart." (Young) Bank-note detector, a publication containing a description of genuine and counterfeit bank notes, designed to enable persons to discriminate between them. Detector lk. See Lock. Origin: L, a revealer. Source: Websters Dictionary (01 Mar 1998) |
| detector coil | A coil used in magnetic resonance imaging as an antenna to record radiofrequency emissions of stimulated nuclei, e.g., body coil, head coil. (05 Mar 2000) |
| electrical conductivity | <radiobiology> Degree to which a substance conducts electric current. Can be defined by: (current density) = (conductivity) (applied electric field) Electrons and ions both contribute to current in proportion to their mobility in the system. In a plasma with a magnetic field, there is no longer a one-to-one correspondence between current and electric field. Instead, the current in each direction can be due to combinations of the electric fields in all the other directions. In this case, the current density and the electric field are vectors, and the conductivity becomes a tensor (matrix) which relates them. (09 Oct 1997) |
| electric conductivity | The capacity to conduct an electric current. Conductivity is the reciprocal of resistance. (12 Dec 1998) |
| flame ionisation detector | <apparatus> A piece of equipment used in gas chromatography that uses a flame to decompose the neutral solute molecules into charged particles, then measures any changes in conductivity. (09 Oct 1997) |
| lie detector | 1. An instrument for multiplying copies of a writing; a manifold writer; a copying machine. 2. In bibliography, a collection of different works, either by one or several authors. Origin: Gr. Writing much; much, many + to write: cf. F. Polygraphe. Source: Websters Dictionary (01 Mar 1998) |
| British Thermal Unit | <unit> Unit of energy needed to raise one pound of water by one degree fahrenheit. It is equal to 252 calories or 1055 Joules. Acronym: BTU (13 Nov 1997) |
| differential thermal analysis | Technique by which phase transitions of chemical reactions can be followed by observation of the heat absorbed or liberated. (12 Dec 1998) |
| thermal | Pertaining to or characterised by heat. (18 Nov 1997) |
| thermal anaesthesia | Loss of temperature appreciation. (05 Mar 2000) |
| thermal barrier | <radiobiology> In magnetic mirror devices, this is a depression of electrostatic potential formed by enhancing ion loss in the region between the central cell and the positive potential plug. The thermal barrier significantly reduces the density requirements in the plug and lowers the overall power required to sustain the solenoidal plugging by thermally decoupling central cell electrons from the end plugs. (09 Oct 1997) |
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