| ECG | Electro-Cardio-Graphy(-Gram); ½ÉÀüµµ = EKG 1. Conducting System Structu... |
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| BPS | beats per second; Behavioral Pharmacological Society; biophysical profile score; bits per second; bo... |
| C2 | second cervical nerve; second cervical vertebra; second component of complement |
| AAPL | American Academy of Psychiatry and the Law |
| ASLM | American Society of Law and Medicine |
| s | 5-second |
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| ESL | English as Second Language |
| FEV1 | Forced Expiratory Volume at 1 second |
| FEV1 | Forced Expiratory Volume at one second |
| FEV1 | Forced expiratory volumes in 1 second |
| fick's law of diffusion | The principle that a substance put into solution will tend to diffuse towards constant concentration throughout the solution. (09 Oct 1997) |
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| Mendel's second law | Different hereditary factors assort independently when the gametes are formed; traits at linked loci are an exception. Synonym: Mendel's second law. (05 Mar 2000) |
| second law of thermodynamics | <physics> All of the chemical and physical processes in a closed system tend to drive that system toward maximum entropy. Clausius statement: No device can operate in a cycle and allow heat to transfer from a colder body to a hotter body unless other compensating activities are taking place. Kelvin-Planck statement: no device can operate in a constant-temperature cycle and convert the heat it receives into work, unless other other compensating activities are taking place. (09 Oct 1997) |
| Fick, Adolf | <person> German physician, 1829-1901. See: Fick principle, Fick method. (05 Mar 2000) |
| Fick method | In 1870 A. Fisk proposed that cardiac output can be calculated as the quotient of total body oxygen consumption divided by the difference in oxygen content of arterial blood and mixed venous blood. In the direct Fick method all variables are measured. The indirect Fick method employs a variety of means to avoid measuring mixed venous oxygen content. By extension, the Fick method may be used to measure cardiac output or organ blood flow with any indicator substance for which the rate of uptake or consumption, and the arterial and mixed venous concentrations, can be measured, provided the indicator does not enter or leave the system by any route not being measured. Synonym: Fick principle. (05 Mar 2000) |
| Fick principle | |
| Fick's laws of diffusion | The direction of movement of solutes by diffusion is always from a higher to a lower concentration and the diffusive flux JA of solute A across a plane at x is proportional to the concentration gradient of A at x; i.e., JA = -D(CA/x), the increase of concentration of solute A with time, CA/t, is directly proportional to the change in the concentration gradient, i.e., CA/t = D(fl2/x2). (05 Mar 2000) |
| antidepressive agents, second-generation | A structurally and mechanistically diverse group of drugs that are not tricyclics or monoamine oxidase inhibitors. The most clinically important appear to act selectively on serotonergic systems, especially by inhibiting serotonin reuptake. (12 Dec 1998) |
| burns, second degree | Second degree burns look similar to the first degree burns in that it is red and sensation is intact; however, the damage is severe enough to cause blistering of the skin and the pain is usually somewhat more intense. (12 Dec 1998) |
| centimeter-gram-second system | The scientific system of expressing the fundamental physical units of length, mass, and time, and those units derived from them, in centimeters, grams, and seconds; currently being replaced by the International System of Units based on the meter, kilogram, and second. (05 Mar 2000) |
| centimeter-gram-second unit | <unit> An absolute unit of the centimeter-gram-second system. (05 Mar 2000) |
| meter-kilogram-second system | An absolute system based on the meter, kilogram, and second; the basis of the International System of Units. (05 Mar 2000) |
| meter-kilogram-second unit | An absolute unit of the meter-kilogram-second system. (05 Mar 2000) |
| cycles per second | The number of successive compressions and rarefactions per second of a sound wave. The preferred designation for this unit of frequency is hertz. Acronym: cps (05 Mar 2000) |
| pregnancy trimester, second | Period of pregnancy from the beginning of the 15th through the 28th completed week (99 to 196 days) of gestation. (12 Dec 1998) |
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