| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
|---|---|
| CK-MB | Creatine Kinase MB Fraction |
| EF study | Ejection-Fraction study |
| FiO2 | Fraction of Inspired Oxygen; ÈíÀÔ »ê¼Ò ³óµµ |
| PPF | Plasma Protein Fraction |
| Fraction 1 | fraction |
|---|
| EF | Ejection Fraction |
|---|---|
| EF | Etiologic Fraction |
| FF | Filtration Fraction |
| F | Fraction |
| Fr. | Fraction |
| fraction | In chemistry, one of the separable constituents of a substance. (18 Nov 1997) |
|---|---|
| fraction collector | A device used to collect the eluate from a column in column chromatography. (05 Mar 2000) |
| fraction I protein | <protein> See ribulose bisphosphate carboxylase/oxidase RUBISCO). (18 Nov 1997) |
| fractional | 1. Of or pertaining to fractions or a fraction; constituting a fraction; as, fractional numbers. 2. Relatively small; inconsiderable; insignificant; as, a fractional part of the population. <chemistry> Fractional crystallization, a process of distillation so conducted that a mixture of liquids, differing considerably from each other in their boiling points, can be separated into its constituents. Source: Websters Dictionary (01 Mar 1998) |
| fractional condensation | A lab technique used to separate the components of a vapor containing a mixture of substances. This is done by taking advantage of the fact that the different chemicals have different boiling points. The mixture undergoes repeated condensations, where the chemical with the highest boiling point condenses out of the vapor first and can be separated from the rest, then the chemical with the next highest boiling point condenses out, etc. (09 Oct 1997) |
| fractional distillation | Distillation of a compound liquid at varying degrees of heat whereby the components of different boiling points are collected separately. (05 Mar 2000) |
| fractional dose | A definite fraction of a full dose; given repeatedly at short intervals so that the full dose is taken within a specified period, usually one day. Synonym: fractional dose. (05 Mar 2000) |
| fractional epidural anaesthesia | Insertion of a catheter into the lumbar or caudal epidural space for the repeated injection of local anaesthetic solutions as a means of prolonging duration of anaesthesia. Synonym: fractional epidural anaesthesia. (05 Mar 2000) |
| fractional spinal anaesthesia | Insertion of a catheter into the spinal subarachnoid space and leaving it in situ to permit serial intermittent injection of local anaesthetic solution for prolonged spinal anaesthesia. Synonym: fractional spinal anaesthesia. (05 Mar 2000) |
| fractional sterilization | Exposure to a temperature of 100°C (flowing steam) for a definite period, usually an hour, on each of several days; at each heating the developed bacteria are destroyed; spores, which are unaffected, germinate during the intervening periods and are subsequently destroyed. Synonym: discontinuous sterilization, intermittent sterilization, tyndallization. (05 Mar 2000) |
| fractionation | A term used to describe any method for separating and purifying biological molecules. See: cell fractionation. (18 Nov 1997) |
| aetiological fraction | <epidemiology> The reduction in disease when a risk factor is removed. If I* is the number of people that a risk factor is responsible for and I is the total number of cases over the same period, then the aetiological fraction is I*/I. Equivalently, the aetiological fraction is (I-Io)/I. Where Io is the number of cases in the absence of the risk factor. Also known as the attributable fraction. (05 Dec 1998) |
|---|---|
| amorphous fraction of adrenal cortex | Noncrystalline residue of an acetone extract of the adrenal cortex after crystalline steroids, e.g., corticosterone, deoxycorticosterone, etc., have been isolated. (05 Mar 2000) |
| attributable fraction | <epidemiology> The same as aetiological fraction. (05 Dec 1998) |
| recombination fraction | The proportion of progeny of a mating pair of specific genotype and coupling phase that are recombinant; there must be no differential selection among the possible types of progeny, and the recombination fraction should be the same regardless of the alleles involved or their coupling phase. (05 Mar 2000) |
| regurgitant fraction | The amount of blood regurgitated into a cardiac chamber divided by the stroke output; normally, no blood regurgitates; in patients with severe valvular lesions such as mitral or aortic insufficiency, regurgitation can approach 80%; this fraction affords a quantitative measure of the severity of the valvular lesion. (05 Mar 2000) |
| microsomal fraction | Artifactual vesicles formed from the endoplasmic reticulum when cells are disrupted. They are isolated by differential centrifugation and are composed of three structural features: rough vesicles, smooth vesicles, and ribosomes. Numerous enzyme activities are associated with the microsomal fraction. (glick, glossary of biochemistry and molecular biology, 1990; from rieger et al., glossary of genetics: classical and molecular, 5th ed) (12 Dec 1998) |
| mole fraction | The ratio of the moles of one component of a system to the total moles of all the components present. (05 Mar 2000) |
| human antihemophilic fraction | A lyophilised concentrate of factor VIII, obtained from fresh normal human plasma; used as a haemostatic agent in haemophilia. Synonym: antihemophilic globulin, human antihemophilic fraction. (05 Mar 2000) |
| human plasma protein fraction | A sterile solution of selected proteins derived from the blood plasma of adult human donors, containing 4.5 to 5.5 g of protein per 100 ml, of which 83 to 90% is albumin and the remainder is alpha-and beta-globulins; used as a blood volume supporter. (05 Mar 2000) |
| dried human plasma protein fraction | Freeze-dried human plasma protein fraction. (05 Mar 2000) |
| ejection fraction | <cardiology> A measure of ventricular contractility, equal to normally 65 |
| filtration fraction | The fraction of the plasma entering the kidney that filters into the lumen of the renal tubules, determined by dividing the glomerular filtration rate by the renal plasma flow; normally, it is around 0.17. (05 Mar 2000) |
Synonyms :
Synonyms : Fractional Precipitations, Precipitation, Fractional, Precipitations, Fractional
Synonyms : SdFFF
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| fraction |
a component of a mixture that has been separated by a fractional process a small part or item forming a piece of a whole the quotient of two rational numbers divide: perform a division; "Can you divide 49 by seven?"
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|---|---|
| fractional distillation |
fractionation of a liquid by distillation
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|
| fractionation |
a process that uses heat to separate a substance into its components separation into portions
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| fractional |
constituting or comprising a part or fraction of a possible whole or entirety; "a fractional share of the vote"; "a partial dose"
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|
| fractionate |
separate into constituents or fractions containing concentrated constituents obtain by a fractional process
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|
| fraction | a small part or item forming a piece of a whole |
|---|---|
| fraction | the quotient of two rational numbers |
| fraction | a component of a mixture that has been separated by a fractional process |
| fraction | perform a division |
| fraction | constituting or comprising a part or fraction of a possible whole or entirety |
| fraction | paper currency in denominations less than the basic monetary unit |
| fraction | fractionation of a liquid by distillation |
| fraction | a monetary unit that is valued at a fraction (usually one hundredth) of the basic monetary unit |
| fraction | a process that uses heat to separate a substance into its components |
| fraction | obtain by a fractional process |
| fraction | separate into constituents or fractions containing concentrated constituents |
| fraction | separation into portions |
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