| VF | left leg [electrode]; ventricular fibrillation; ventricular fluid; ventricular flutter; visual field... |
|---|---|
| ACF | accessory clinical findings; acute care facility; anterior cervical fusion; area correction factor; ... |
| AF | abnormal frequency; acid-fast; adult female; afebrile; aflatoxin; albumin-free; albumose-free; aldeh... |
| FFF | degree of fineness of abrasive particles; field-flow fractionation; flicker fusion frequency |
| FFT | fast Fourier transform; flicker fusion test or threshold |
| thermonuclear fusion | <radiobiology> Fusion achieved by heating the fuel into the plasma state to the point where ions have sufficient energy to fuse. Also used to characterise fusion between thermal ions as opposed to fusion involving injected beam ions. (09 Oct 1997) |
|---|---|
| tokamak fusion test reactor | <radiobiology> Large tokamak at Princeton, first machine to use 50-50 mix of D-T fuel, current world's record holder in fusion energy production. Largest tokamak in the United States. (09 Oct 1997) |
| enthalpy of fusion | <chemistry> The enthalpy change that occurs to melt a solid at its melting point. Synonym: heat of fusion. (09 Jan 1998) |
| flicker fusion | The point or frequency at which all flicker of an intermittent light stimulus disappears. (12 Dec 1998) |
| flicker fusion frequency technique | A technique of perimetry using the criterion of critical fusion frequency. Synonym: flicker fusion frequency technique. (05 Mar 2000) |
| laser fusion | <radiobiology> Form of inertial confinement fusion where laser beams are used to compress and heat the fuel pellet. (09 Oct 1997) |
| fusion | <radiobiology> A nuclear reaction in which light atomic nuclei combine to form heavier nuclei, typically accompanied by the release of energy. (See also Controlled Thermonuclear Fusion) (09 Oct 1997) |
| fusion area | The area in and about the macula retinae in which stimulation of noncorresponding retinal points nevertheless results in stereoscopic vision. Synonym: fusion area. (05 Mar 2000) |
| fusion energy | <chemistry, radiobiology> The binding energy of a nucleus is the minimum energy required to dissociate it into its component neutrons and protons. Neutron or proton binding energies are those required to remove a neutron or proton, respectively, from a nucleus. Electron binding energy is that required to remove an electron from an atom or a molecule. (16 Dec 1997) |
| fusion-fission hybrid | <radiobiology> Proposed nuclear reactor relying on both fusion and fission reactions. A central fusion chamber would produce neutrons to induce fission in a surrounding blanket of fissionable material. The neutron source could also be used to convert other materials into additional fissile fuels (breeder hybrid). Safer than a plain fission reactor because the fission fuel relies on the fusion neutrons, and therefore cannot achieve criticality. On the other hand, hybrids are more complex because of the fusion power core, and still generate fission's radioactive byproducts. But a fusion-fission hybrid could be more economical and have less stringent technical requirements than a pure fusion reactor. (05 Jan 1998) |
| fusion gene | <molecular biology> A hybrid gene created by joining portions of two different genes (to produce a new protein) or by joining a gene to a different promoter (to alter or regulate gene transcription). (05 Jan 1998) |
| fusion-inferred threshold test | Employment of the phenomenon of cerebral fusion of binaural sounds to substitute for conventional masking in hearing testing. Synonym: FIT test. (05 Mar 2000) |
| fusion protein | <protein> Protein formed by expression of a hybrid gene made by combining two gene sequences. Typically this is accomplished by cloning a cDNA into an expression vector in frame with an existing gene, perhaps encoding for example beta galactosidase. (18 Nov 1997) |
| fusion proteins, bcr-abl | Translation products of a fusion mRNA derived from the breakpoint cluster region (bcr) gene and a cellular abl (c-abl) gene translocated to chromosome 22. The p210(bcr-abl) fusion protein is found in patients with chronic myelogenous leukaemia. The p190(bcr-abl) fusion protein is found in patients with acute lymphocytic leukaemia. The activation of human c-abl by chromosomal translocation is essentially the same as the activation of murine c-abl by viral translocation in abelson murine leukaemia virus. (12 Dec 1998) |
| fusion proteins, gag-onc | General name for the translation products of a fusion mRNA consisting of a gag gene and a viral oncogene (v-onc). These products are thought to have the ability to transform cells. (12 Dec 1998) |