| DA | dark adaptation; dark agouti [rat]; daunomycin; degenerative arthritis; delayed action; Dental Assis... |
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| F344 | Fischer 344 [rat] |
| fa | fatty [rat] |
| FRE | Fischer rat embryo; flow-related enhancement |
| GH | general health; general hospital; genetic hypertension; genetically hypertensive [rat]; geniohyoid; ... |
| rate 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) |
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| rate equation | A mathematical expression for a chemical, radiochemical, or enzyme-catalyzed reaction. (05 Mar 2000) |
| rate meter | A device that continuously displays the magnitude of events averaged over varying time intervals. (05 Mar 2000) |
| rate schedule | A price list showing how the electric bill of a particular type of customer will be calculated by an electric utility company. (05 Dec 1998) |
| rate setting and review | A method of examining and setting levels of payments. (12 Dec 1998) |
| rate, basal metabolic | A measure of the rate of metabolism. For example, someone with an overly active thyroid will have an elevated basal metabolic rate. (12 Dec 1998) |
| rate, birth | The birth rate is usually given as the number of live births divided by the average population (or the population at midyear). This is termed the crude birth rate. In 1995, for example, the crude birth rate per 1,000 population was 14 in the united states, 16.9 in Australia, etc. (12 Dec 1998) |
| rate, death | The number of deaths in the population divided by the average population (or the population at midyear) is the crude death rate. In 1994, for example, the crude death rate per 1,000 population was 8.8 in the united states, 7.1 in Australia, etc. A death rate can also be tabulated according to age or cause. (12 Dec 1998) |
| rate, erythrocyte sedimentation | A sedimentation rate, or sed rate , is a blood test that detects and is used to monitor inflammation activity. It is measured by recording the rate at which red blood cells (rbcs) sediment in a tube over time. It increases (the rbcs sediment faster) with more inflammation. (12 Dec 1998) |
| rate, foetal mortality | The ratio of foetal deaths divided by the sum of the births (the live births + the foetal deaths) in that year. In the united states, the foetal mortality rate plummeted from 19.2 per 1,000 births in 1950 to 9.2 per 1,000 births in 1980. (12 Dec 1998) |
| rate, heart | Number of heart beats per minute. The normal resting adult heart beats regularly at an average rate of 60 times per minute. (young children's hearts beat faster). The speed of the heartbeat (heart rate) is governed by the speed of electrical signals from the pacemaker of the heart, the sa node, located in the right atrium (upper chamber of the heart). The electrical signals from the sa node travel across the atria and cause these two upper heart chambers to contract, delivering blood into the lower heart chambers, the ventricles. The electrical signals then pass through the av node to reach the ventricles. Electrical signals reaching the ventricles cause these chambers to contract, pumping blood to the rest of the body, generating the pulse. During rest, the speed of electrical signals originating from the sa node is slow, so the heart beats slowly. During exercise or excitement, the speed of signals from the sa node increases, and the heartbeat quickens. (12 Dec 1998) |
| rate, infant mortality | The number of children dying under a year of age divided by the number of live births that year. The infant mortality rate in the united states, which was 12.5 per 1,000 live births in 1980, fell to 9.2 per 1,000 live births in 1990. (12 Dec 1998) |
| rate, maternal mortality | The number of maternal deaths related to childbearing divided by the number of live births (or by the number of live births + foetal deaths) in that year. The maternal mortality rate in the united states in 1993 (and 1994) was 0.1 per 1,000 live births, or 1 mother dying per 10,000 live births. (12 Dec 1998) |
| rate, neonatal mortality | The number of children dying under 28 days of age divided by the number of live births that year. The neonatal mortality rate in the united states, which was 8.4 per 1,000 live births in 1980, declined to 5.8 per 1,000 live births in 1990. (12 Dec 1998) |
| rate, pulse | The pulse rate is most often taken at the wrist. It measures the number of pulsations in the radial artery each minute. (12 Dec 1998) |
Synonyms : Brattleboro Rats
Synonyms : Gunn Rats
Synonyms : Rats, ACI, ACI Rat, ACI Rat, Inbred, ACI Rats, ACI Rats, Inbred, Inbred ACI Rat, Inbred ACI Rats, Rat, ACI, Rat, Inbred ACI
Synonyms : Rats, BB, BB Rat, BB Rat, Inbred, BB Rats, BB Rats, Inbred, Bio Breeding Inbred Rats, Bio-Breeding Inbred Rat, Inbred BB Rat, Inbred BB Rats, Inbred Rat, Bio-Breeding, Inbred Rats, Bio-Breeding, Rat, BB, Rat, Bio-Breeding Inbred, Rat, Inbred BB, Rats, BB Wistar
Synonyms : Rats, BN, BN Rat, BN Rat, Inbred, BN Rats, BN Rats, Inbred, Inbred BN Rat, Inbred BN Rats, Rat, BN, Rat, Inbred BN
| Rattus |
common house rats; upper incisors have a beveled edge
출처: wordnet.princeton.edu/perl/webwn
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| rate responsive pacemaker |
an artificial cardiac pacemaker that can deliver stimuli at a rate adjustable to some parameter independent of atrial activity, such as respiratory rate, physical activity level, blood temperature, or mixed venous oxygen saturation level.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| rational medicine |
practice of medicine based upon actual knowledge; opposed to empiricism.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| Rattus |
A rat is a small nearly omnivorous rodent of the genus Rattus which comprises 56 different species of what is commonly known as the Old World Rats or true rats who originated in Asia. Rats are bigger than their relatives the mice, but seldom weigh over 500 grams. The common term rat is also used in the names of other small mammals which are not true rats. ...
출처: en.wikipedia.org/wiki/Rattus
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| Rathke's duct |
that part of the ductus paramesonephricus lying between its main part and the sinus pocularis.
출처: www.merckmedicus.com/pp/us/hcp/thcp_dorlands_conte...
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| rat | an exhausting routine that leaves no time for relaxation |
|---|---|
| rat | any of various nonvenomous rodent-eating snakes of North America and Asia |
| rat | any of several breeds of terrier developed to catch rats |
| rat | acute infection caused by rickettsia and transmitted by the bite of an infected flea |
| rat | commonly cultivated tropical American cactus having slender creeping stems and very large showy crimson flowers that bloom for several days |
| rat | a series of short sharp taps (as made by strokes on a drum or knocks on a door) |
| rat | a series of short sharp taps (as made by strokes on a drum or knocks on a door) |
| rat | a workman employed to destroy or drive away vermin |
| rat | a thin round file shaped like the tail of a rat |
| rat | a series of short sharp taps (as made by strokes on a drum or knocks on a door) |
| rat | the quality of being capable of being rated or estimated |
| rat | (British) the state of being liable to assessment or taxation |