| ICRC | infant care review committee; International Committee of the Red Cross |
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| IDS-SR | Inventory for Depressive Symptomatology-Systems Review |
| IRB | Institutional Review Board |
| JRC | CVT Joint Review Committee on Education in Cardiovascular Technology |
| JRC | DMS Joint Review Committee on Diagnostic Medical Sonography |
| Baer's law | The general organ characteristics found in all members of a group appear earlier in embryogenesis than the special organ characteristics that distinguish specific members of the group; this law is the predecessor of the recapitulation theory. (05 Mar 2000) |
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| Baruch's law | The effect of any hydriatric procedure is in direct proportion to the difference between the temperature of the water and that of the skin; when the temperature of the water is above or below that of the skin the effect is stimulating; when the two temperatures are the same the effect is sedative. (05 Mar 2000) |
| beer-lambert law | The equation A=ECL, where A is the absorbance at a given wavelength of light, E is the molar extinction coefficient, C is the concentration of the molar solution, and L is the length of the light path. In words, the equation means that the concentration of a substance in moles is proportional to the absorption of a given wavelength of light by a solution of the substance. The equation is used in the study of spectroscopy. (09 Oct 1997) |
| Beer's law | The intensity of a colour or of a light ray is inversely proportional to the depth of liquid through which it is transmitted; it is concluded that the absorption is dependent upon the number of molecules in the path of the ray. Compare: Beer-Lambert law. (05 Mar 2000) |
| Behring's law | Parenteral administration of serum from an immunised person provides a relative, passive immunity to that disease (i.e., prevents it, or favourably modifies its course) in a previously susceptible person. (05 Mar 2000) |
| Bell-Magendie law | The ventral spinal roots are motor, the dorsal are sensory. Synonym: Bell-Magendie law, Magendie's law. (05 Mar 2000) |
| Bell's law | The ventral spinal roots are motor, the dorsal are sensory. Synonym: Bell-Magendie law, Magendie's law. (05 Mar 2000) |
| Bernoulli's law | <physics> When friction is negligible, the velocity of flow of a gas or fluid through a tube is inversely related to its pressure against the side of the tube; i.e., velocity is greatest and pressure lowest at a point of constriction. Synonym: Bernoulli's principle, Bernoulli's theorem. (05 Mar 2000) |
| Berthollet's law | Salts in solution will always react with each other so as to form a less soluble salt, if possible. (05 Mar 2000) |
| biogenetic law | The theory that ontogeny recapitulates phylogeny, which means that one can trace the evolutionary development of a species by studying the development of an individual embryo or young of that species. The theory is still used, especially in paleontology, but has been found to not be strictly true when applied to problems in biology. (09 Oct 1997) |
| biot-savart law | <physics> General formula for determining the magnetic field due to a steady line (not space) current. Related to Ampere's Law. (19 Jan 1998) |
| Blagden's law | The depression of the freezing point of dilute solutions is proportional to the amount of the dissolved substance. (05 Mar 2000) |
| Bowditch's law | Consistently total response to any effective stimulus. Synonym: all or none law. (05 Mar 2000) |
| boyle's law | This law states that the volume of a sample of gas is, at a constant temperature, inversely proportional to the pressure of that gas. (09 Oct 1997) |
| Broadbent's law | Lesions of the upper segment of the motor tract cause less marked paralysis of muscles that habitually produce bilateral movements than of those that commonly act independently of the opposite side. (05 Mar 2000) |