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| ¿µ¹® | bleeding time | ÇÑ±Û | ÃâÇ÷½Ã°£ |
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| ¿µ¹® | prothrombin time | ÇÑ±Û | ÇÁ·ÎÆ®·Òºó½Ã°£ |
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| DVI | deep venous insufficiency; diastolic velocity integral; digital vascular imaging; Doppler velocity i... |
|---|---|
| TVI | time-velocity integral |
| VTI | velocity-time integral; volume thickness index |
| CT | calcitonin; calf testis; cardiac tamponade; cardiothoracic [ratio]; carotid tracing; carpal tunnel; ... |
| PTT | partial thromboplastin time; particle transport time; posterior tibial tendon (transfer); prothrombi... |
| VTI | Velocity time integral |
|---|---|
| FVI | flow velocity integral |
| FTI | force-time integral |
| VSL | velocity , straight line velocity |
| IMP | Integral membrane protein |
| integral | 1. Lacking nothing of completeness; complete; perfect; uninjured; whole; entire. "A local motion keepeth bodies integral." (Bacon) 2. Essential to completeness; constituent, as a part; pertaining to, or serving to form, an integer; integrant. "Ceasing to do evil, and doing good, are the two great integral parts that complete this duty." (South) 3. <mathematics> Of, pertaining to, or being, a whole number or undivided quantity; not fractional. Pertaining to, or proceeding by, integration; as, the integral calculus. Integral calculus. See Calculus. Origin: Cf. F. Integral. See Integer. 1. A whole; an entire thing; a whole number; an individual. 2. <mathematics> An expression which, being differentiated, will produce a given differential. See differential Differential, and Integration. Cf. Fluent. Elliptic integral, one of an important class of integrals, occurring in the higher mathematics; so called because one of the integrals expresses the length of an arc of an ellipse. Source: Websters Dictionary (01 Mar 1998) |
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| integral dose | The total energy absorbed by the body, the product of the mass of tissue irradiated and the absorbed dose; unit, the gram rad. (05 Mar 2000) |
| integral membrane protein | <protein> A protein that is firmly anchored in a membrane (unlike a peripheral membrane protein). most is known about the integral proteins of the plasma membrane, where important examples include hormone receptors, ion channels and transport proteins. An integral protein need not cross the entire membrane, those that do are referred to as transmembrane proteins. (18 Nov 1997) |
| integral proteins | Proteins that cannot be easily separated from a biomembrane. Synonym: intrinsic proteins. (05 Mar 2000) |
| Alfven velocity | <physics, radiobiology> Phase velocity of the Alfven wave, equal to the speed of light divided by the square root of (1 plus the ratio of the plasma frequency to the cyclotron frequency for a given species). Va = c / SQRT(1 + plasma frequency / cyclotron frequency) (13 Nov 1997) |
| blood flow velocity | A value equal to the total volume flow divided by the cross-sectional area of the vascular bed. (12 Dec 1998) |
| velocity | The time rate of motion, the distance traveled divided by the time required to travel that distance. (09 Oct 1997) |
| velocity coefficient | The rate of transformation of a unit mass of substance in a chemical reaction. (05 Mar 2000) |
| velocity constants | Proportionality constants equal to the initial rate of a reaction divided by the concentration of the reactant(s); e.g., in the reaction A → B + C, the rate of the reaction equals -d[A]/dt = k1[A]. The rate constant k1 is a unimolecular rate constant since there is only one molecular species reacting and has units of reciprocal time (e.g., sec-1). For the reverse reaction, B + C → A, the rate equals -d[B]/dt = d[A]/dt = k2[B][C]. The rate constant k2 is a bimolecular rate constant and has units of reciprocal concentration-time (e.g., m-1 sec-1). Synonym: velocity constants. (05 Mar 2000) |
| velocity space | <radiobiology> Mathematical space where each point corresponds not to a certain location in reality, but to a certain velocity. Distribution functions typically involve mixes of both position and velocity spaces. (See distribution function.) Contrast with position space where each point corresponds to a given location. (09 Oct 1997) |
| velocity space instability | <radiobiology> A class of instabilities driven by particle distributions (in velocity space) which are not in thermal equilibrium. (09 Oct 1997) |
| maximum velocity | The maximum rate of an enzyme-catalyzed reaction that can be achieved by progressively increasing the substrate concentration at a given enzyme concentration; in cases of substrate inhibition, Vmax is an extrapolated value in the absence of such inhibition; Cf.: Michaelis-Menten equation. The maximum initial rate of shortening of a myocardial fibre that can be obtained under zero load; used to evaluate the contractility of the fibre. (05 Mar 2000) |
| group velocity | <radiobiology> This is derived from the dispersion relation as Vgroup = dw/dk, the group velocity is the rate at which modulations or information within a wave travel through a given medium. (09 Oct 1997) |
| critical velocity | <biology> The maximum speed a device or organism can sustain over a specified distance or length of time, or the maximum velocity against which device or organism can sustain a position over a specified length of time. <marine biology> Velocity through which a fish will not swim, creating a velocity barrier. (09 Oct 1997) |
| sedimentation velocity | The rate of movement of a substance, typically a macromolecule, in centrifugation; these centrifugation studies provide data on the structure of the macromolecule. (05 Mar 2000) |
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