| time-varied gain control | In ultrasonography, an increase in receiver gain with time to compensate for loss in echo amplitude with depth, usually due to attenuation. Synonym: attenuation compensation, depth compensation, time compensation gain, time-compensated gain, time-varied gain control, time-varied gain. (05 Mar 2000) |
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| tonic control | Nerve impulses that maintain a normal tonus or level of activity in muscle or other effector organs. (05 Mar 2000) |
| topographical control | Those phenomena of cell behaviour in which the shape of the local substrate of the cell affects its behaviour. See: contact guidance. (18 Nov 1997) |
| transcriptional control | <molecular biology> Control of gene expression by controlling the number of RNA transcripts of a region of DNA. A major regulatory mechanism for differential control of protein synthesis in both pro and eukaryotic cells. (18 Nov 1997) |
| translational control | <molecular biology> The control of protein synthesis by regulation of the translation step, for example by selective usage of preformed mRNA or instability of the mRNA. (18 Nov 1997) |
| facility regulation and control | Formal voluntary or governmental procedures and standards required of hospitals and health or other facilities to improve operating efficiency, and for the protection of the consumer. (12 Dec 1998) |
| feedback control | The regulation of the activity of an enzyme by one of its products. (09 Oct 1997) |
| feedforward control | The process in which one of the products of a metabolic pathway induces an enzyme which participates in the metabolic pathway to act. (09 Oct 1997) |
| forms and records control | A management function in which standards and guidelines are developed for the developing, maintaining, and handling of forms and records. (12 Dec 1998) |
| locus control region | A regulatory region first identified in the human beta-globin locus but subsequently found in other loci. The region is believed to regulate transcription by opening and remodeling chromatin structure. It may also have enhancer activity. (12 Dec 1998) |
| locus of control | A theoretical construct designed to assess a person's perceived control over his/her own behaviour; classified as internal if the person feels in control of events, external if others are perceived to have that control. (05 Mar 2000) |