| AID | acquired immunodeficiency disease; acute infectious disease; acute ionization detector; Agency for I... |
|---|---|
| ECD | ectrodactyly; electrochemical detector; electron capture detector; endocardial cushion defect; enzym... |
| FID | flame ionization detector; free induction decay; fungal immunodiffusion |
| MFID | multielectrode flame ionization detector |
| DTF | detector transfer function |
| FID | Flame ionization detector |
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| NPD | Nitrogen-Phosphorous detector |
| DAD | diode array detector |
| ECD | electrochemical detector |
| E.C.D. | electron capture detector |
| spectrometry, mass, matrix-assisted laser desorption-ionization | A mass spectrometric technique that is used for the analysis of large biomolecules. Analyte molecules are embedded in an excess matrix of small organic molecules that show a high resonant absorption at the laser wavelength used. The matrix absorbs the laser energy, thus inducing a soft disintegration of the sample-matrix mixture into free (gas phase) matrix and analyte molecules and molecular ions. In general, only molecular ions of the analyte molecules are produced, and almost no fragmentation occurs. This makes the method well suited for molecular weight determinations and mixture analysis. (12 Dec 1998) |
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| ionization | <chemistry, radiobiology> Any process by which a neutral atom gains or loses electrons, thus acquiring a net charge, as the dissociation of a substance in solution into ions or ion production by the passage of radioactive particles. High temperatures, electrical discharges or nuclear radiations can cause ionisation. (16 Dec 1997) |
| ionization chamber | A chamber for detecting ionization of the enclosed gas; used for determining intensity of ionizing radiation. (05 Mar 2000) |
| flame ionization | Pyrolysis of organic compounds at the temperature of a hydrogen-air flame to produce ionic intermediates which can be collected and the resulting ion current measured by gas chromatography. (12 Dec 1998) |
| 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) |
| 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) |
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