| PSD | particle size distribution; peptone, starch, and dextrose; periodic synchronous discharge; phase-sen... |
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| CHFD | controlled high flux dialysis |
| dB/dt | change of magnetic flux with time |
| FU | fecal urobilinogen; fetal urobilinogen; fluorouracil; follow-up; flux unit [ion]; fractional urinaly... |
| LDF | laser Doppler flux, laser Doppler fluxometry; limit dilution factor |
| LDF | Laser Doppler Flux |
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| PPF | Photosynthetic photon flux |
| EE | either extract |
| PCP | phenol-chloroform-petroleum either |
| GCP | Growth cone particle |
| either particle flux density | The particle fluence rate, or energy flux density, the energy fluence rate of intensity. Compare: fluence. (05 Mar 2000) |
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| flux density | <radiobiology> Total amount of a quantity passing through a unit surface area in unit time See: flux. (09 Oct 1997) |
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| either | 1. One of two; the one or the other; properly used of two things, but sometimes of a larger number, for any one. "Lepidus flatters both, Of both is flattered; but he neither loves, Nor either cares for him." (Shak) "Scarce a palm of ground could be gotten by either of the three." (Bacon) "There have been three talkers in Great British, either of whom would illustrate what I say about dogmatists." (Holmes) 2. Each of two; the one and the other; both; formerly, also, each of any number. "His flowing hair In curls on either cheek played." (Milton) "On either side . . . Was there the tree of life." (Rev. Xxii. 2) "The extreme right and left of either army never engaged." (Jowett (Thucyd)) Origin: OE. Either, aither, AS. Ger, ghwaeer (akin to OHG. Ogiwedar, MHG. Iegeweder); a + ge + hwaeer whether. See Each, and Whether, and cf. Or, conj. Precedes two, or more, coordinate words or phrases, and is introductory to an alternative. It is correlative to or. "Either he is talking, or he is pursuing, or he is in a journey, or peradventure he sleepeth." (1 Kings xviii. 27) "Few writers hesitate to use either in what is called a triple alternative; such as, We must either stay where we are, proceed, or recede." (Latham) Either was formerly sometimes used without any correlation, and where we should now use or. "Can the fig tree, my brethren, bear olive berries? either a vine, figs??" (James III. 12) Source: Websters Dictionary (01 Mar 1998) |
| bloody flux | The dysentery, a disease in which the flux or discharge from the bowels has a mixture of blood. Source: Websters Dictionary (01 Mar 1998) |
| net flux | The difference between the two unidirectional flux's. (05 Mar 2000) |
| integrated neutron flux | <radiobiology> Sum (integral) of the neutron flux (neutrons per unit time per unit area, see flux) over all time, total number of neutrons which passed through a unit area. Important figure-of-merit in testing effects of neutron radiation on materials, and in assessing how long such materials can survive exposure to neutron sources (such as fission reactor cores and D-T fusion plasmas). (09 Oct 1997) |
| toroidal flux | <radiobiology> Magnetic field flux in the toroidal direction. See: magnetic fields. (09 Oct 1997) |
| unidirectional flux | The flux of a substance from one surface of a boundary layer or membrane to the other, disregarding any counterbalancing flux in the other direction, as measured by tracer technique. (05 Mar 2000) |
| flux | <radiobiology> The total amount of a quantity passing through a given surface per unit time. Typical quantities include (magnetic) field lines, particles, heat, energy, mass of fluid, etc. Common usage in plasma physics is for flux by itself to mean magnetic field flux, unless specified otherwise. (09 Oct 1997) |
| flux, light | <microscopy> Sometimes called luminous flux, the visible portion of the radiant energy emitted by a light source. It is measured in lumens per solid angle. In electrical engineering, it is analogous to the lines of force in a magnetic field, spoken of as magnetic flux. (05 Aug 1998) |
| flux ratio | The ratio of the two unidirectional fluxes through a particular boundary layer or membrane. (05 Mar 2000) |
| luminous flux | The quantity of light emitted from a point source in a given time; its unit is the lumen. (05 Mar 2000) |
| alpha particle | <physics> A radioactive particle made up of two protons and two neutrons, these particles are created by the decay of a radioactive material or by nuclear bombardment, and they are the same as the nucleus of a helium-4 atom. (09 Oct 1997) |
| beta particle | <physics, radiobiology> An electron or positron emitted from a radioactive nucleus during beta decay. (09 Oct 1997) |
| genes, intracisternal a-particle | A family of retrovirus-like genetic elements coding for virus-like particles found regularly in early rodent embryos (2-cell to blastocyst stage), but which, under certain circumstances such as DNA hypomethylation, are transcribed in a wide variety of neoplasms, including plasmacytomas, neuroblastomas, rhabdomyosarcomas, teratocarcinomas, and colon carcinomas. (12 Dec 1998) |
| particle | <chemistry> A tiny mass of material. Origin: L. Particula, dim. Of pars = part (18 Nov 1997) |
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