| REM | 1) Rapid Eye Movement; ±Þ¼Ó ¾È±¸ ¿îµ¿ 2) Radiation Equivalent to Man |
|---|---|
| rem | Roentgen Equivalent Man 1 rem = 1 rad x RBE |
| AEq | age equivalent |
| AET | absorption-equivalent thickness;S-(2-aminoethyl) isothiuronium |
| BE | bacillary emulsion; bacterial endocarditis; barium enema; Barrett's esophagus; base excess; below-el... |
| J | Joule |
|---|---|
| ERB | 1-equivalent rectangular bandwidth |
| TEQ | 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalent |
| BCE | Bone collagen equivalent |
| CGE | Cobalt Gray Equivalent |
| Joule's equivalent | The dynamic equivalent of heat; the amount of work converted to heat that will raise the temperature of 1 pound of water 1°F is 778 foot-pounds; in metric units, 1 calorie, which raises 1 gram of water 1°C, equals 4.184 × 107 dyne-centimeters, which equals 4.184 joules. (05 Mar 2000) |
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| joule | <unit> SI unit of energy. 1 Joule = 1E7 ergs = 1 Watt of power occurring for one second. 1 Joule is roughly 0.001 BTU and 1 calorie is roughly 4 joules. There are 3.6 million joules in a kilowatt hour. (14 Oct 1997) |
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| Joule, James | <person> British physicist, 1818-1889. See: joule, Joule's equivalent. (05 Mar 2000) |
| alu-equivalent family | A set of sequences in a mammalian genome that is related to the human Alu family. (05 Mar 2000) |
| barrel of oil equivalent | A unit of energy equal to the amount of energy contained in a barrel of crude oil. Approximately 5.78 million Btu or 1,700 kWh. A barrel is a liquid measure equal to 42 gallons. (05 Dec 1998) |
| gold equivalent | A unit of power of the protective colloids; the number of milligrams of protective colloid just sufficient to prevent the precipitation of 10 ml of a 0.0053 to 0.0058% gold solution by the action of 1 ml of a 10% sodium chloride solution. Synonym: gold number. (05 Mar 2000) |
| gram equivalent | The weight in grams of an element that combines with or replaces 1 gram of hydrogen, the atomic or molecular weight in grams of an atom or group of atoms involved in a chemical reaction divided by the number of electrons donated, taken up, or shared by the atom or group of atoms in the course of that reaction, the weight of a substance contained in 1 liter of 1 normal solution; a variant of. Synonym: combining weight, equivalent weight. (05 Mar 2000) |
| metabolic equivalent | The oxygen cost of energy expenditure measured at supine rest (1 MET = 3.5 ml O2 per kg of body weight per minute); multiples of MET are used to estimate the oxygen cost of activity, e.g., 3 to 5 METs for light work; more than 9 METs for heavy work. (05 Mar 2000) |
| roentgen-equivalent | <radiobiology> A unit of dose equivalent to that quantity of ionizing radiation of any type that produces in man the same biologic effect as one rad of X-rays or gamma rays; the number of rems is equal to the absorbed dose, measured in rads, multiplied by the quality factor of the radiation in question.100 rem = 1 Sv. (05 Mar 2000) |
| roentgen-equivalent physical | <radiobiology, unit> A roentgen equivalent physical is a unit of absorbed radiation approximately equivalent to a roentgen, an international unit of x- or gamma-radiation. An obsolete unit of measurement; that quantity of ionizing radiation of any kind which, upon absorption by living tissue, produces an energy gain per gram of tissue equivalent to that produced by 1 roentgen of X-rays or gamma-rays. Acronym: rep See: rad. (05 Mar 2000) |
| combustion equivalent | The heat value of a gram of carbohydrate or fat oxidised outside the body. (05 Mar 2000) |
| starch equivalent | The amount of oxygen consumed in the combustion of a given weight of fat as compared with that consumed in the combustion of an equal weight of starch; the figure is about 2.38, that for starch being taken as 1. (05 Mar 2000) |
| nitrogen equivalent | The nitrogen content of protein; used in calculating the protein breakdown in the body from the nitrogen excreted in the urine, 1 g of nitrogen considered as having originated in 6.25 g of protein catabolised. (05 Mar 2000) |
| toxic equivalent | The amount of toxin or other poison per kilogram of body weight necessary to kill an animal. (05 Mar 2000) |
| equivalent | Having the same value, neutralising or counterbalancing. Origin: L. Aequivalens, from aequus = equal, valere = to be worth (11 Nov 1997) |
| equivalent dose | In radiation protection, the absorbed dose averaged over a tissue or organ and weighted for the quality of the radiation of interest. The unit of equivalent dose is the sievert. (05 Mar 2000) |
| Joule's equivalent |
an expression of the relationship between mechanical energy and heat; numerically 4.186 joules = 1 calorie.
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