| high energy particle generating unit | A machine capable of providing highly energised radiation for the purposes of radiotherapy treatment. (16 Dec 1997) |
|---|---|
| endothelin-valine-generating endopeptidase | <enzyme> Cleaves big endothelin between val22 and asn23 Registry number: EC 3.4.21.- Synonym: big-et-ge (26 Jun 1999) |
| energy-generating resources | Natural energy sources of power supply. (12 Dec 1998) |
| magnetic moment | <physics> (a) A vector associated with a magnet, current loop, or particle, the cross product of this vector with the magnetic field is equal to the torque which the field exerts on the system. (b) The adiabatic invariant associated with the rapid gyromotion of a charged particle in a slowly varying magnetic field. (The value of the magnetic moment in sense (b) is the magnitude of the vector in sense (a).) (13 Nov 1997) |
| moment | 1. A minute portion of time; a point of time; an instant; as, at thet very moment. "In a moment, in the twinkling of an eye." (1 Cor. Xv. 52) 2. Impulsive power; force; momentum. "The moments or quantities of motion in bodies." (Berkley) "Touch, with lightest moment of impulse, His free will." (Milton) 3. Importance, as in influence or effect; consequence; weight or value; consideration. "Matters of great moment." (Shak) "It is an abstruse speculation, but also of far less moment and consequence of us than the others." (Bentley) 4. An essential element; a deciding point, fact, or consideration; an essential or influential circumstance. 5. <mathematics> An infinitesimal change in a varying quantity; an increment or decrement. 6. <mechanics> Tendency, or measure of tendency, to produce motion, especially. Motion about a fixed point or axis. Moment of a couple, the product of the intensity of the force into the perpendicular distance from the point to the line of direction of the force, the product of that component of the force which is perpendicular to the plane passing through the line and the point of application of the force, into the shortest distance between the line and this point, the product of the force into the perpendicular distance of its point of application from the plane. Moment of inertia, of a rotating body, the sum of the mass of each particle of matter of the body into the square of its distance from the axis of rotation; called also moment of rotation and moment of the mass. Statical moment, the product of a force into its leverage; the same as moment of a force with respect to a point, line, etc. Virtual moment. See Virtual. Synonym: Instant, twinkling, consequence, weight, force, value, consideration, signification, avail. Origin: F. Moment, L. Momentum, for movimentum movement, motion, moment, fr. Movere to move. See Move, and cf. Momentum, Movement. Source: Websters Dictionary (01 Mar 1998) |
| product-moment correlation | A statistical procedure which yields the correlation coefficient referred to as r (-1.00 to +1.00) and involves the actual values, rather than the ranks (rank order) of the measurements. (05 Mar 2000) |
| overturning moment | <radiobiology> Torque (moment) on a toroidal field coil in a tokamak, about the device's radial direction, that results from out-of-plane forces on the coil due to the interactions between the coil current and the poloidal (vertical) magnetic field. This torque tends to overturn the vertical toroidal field coil, and must be engineered against. (09 Oct 1997) |
| acquired platelet function defect | <haematology> Platelet function can be affected by a number of different disease processes including polycythaemia vera, leukaemia, myelofibrosis, renal failure, multiple myeloma and some medications (for example penicillins, salicylates, phenothiazines). Disturbed blood clotting can be manifested by: easy bruising, bleeding gums, nosebleeds, abnormal vaginal bleeding, rectal bleeding, skin rash, vomiting blood, coughing up blood or blood in the urine. A measure of bleeding time and coagulation profile will be part of the evaluation. (29 Dec 1997) |
| allomeric function | The combined function of the several segments of the spinal cord and medulla, communicating with each other by means of the white matter. (05 Mar 2000) |
| aperture function | <microscopy> In a diffraction-limited optical system, the function that determines the relationship between the image and each point in the object. Modifying the aperture function changes the image according to the modified Fourier-filtering (or optical filtration) property of the aperture. (05 Aug 1998) |
| arousal function | The ability of a sensory event to arouse the cortex to vigilance or readiness. (05 Mar 2000) |
| atrial function | The haemodynamic and electrophysiological action of the atria. (12 Dec 1998) |
| atrial function, left | The haemodynamic and electrophysiological action of the left atrium. (12 Dec 1998) |
| atrial function, right | The haemodynamic and electrophysiological action of the right atrium. (12 Dec 1998) |
| atrial transport function | The role of the atria in filling and stretching the ventricles by their presystolic contraction, without which the force of ventricular contraction and hence the cardiac output may significantly decrease. (05 Mar 2000) |