| fluoride | <chemical> The fluoride ion. Low levels of fluoride in drinking water markedly decrease the incidence of dental caries, probably because bacterial metabolism is much more sensitive to low fluoride levels. (18 Nov 1997) |
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| fluoride number | The percent inhibition of pseudocholinesterase produced by fluorides; used to differentiate normal from atypical pseudocholinesterases. See: dibucaine number. (05 Mar 2000) |
| fluoride poisoning | Gen or unspecified fluoride; prefer /pois with specific fluoride term (12 Dec 1998) |
| fluorides | Inorganic salts of hydrofluoric acid, hf, in which the fluorine atom is in the -1 oxidation state. (12 Dec 1998) |
| fluorides, topical | Fluorides, usually as pastes or gels, used for topical application to reduce the incidence of dental caries. (12 Dec 1998) |
| fluoridization | Therapeutic use of fluorides to reduce the incidence of dental decay; sometimes used to refer to the topical application of fluoride agents to the teeth. (05 Mar 2000) |
| fluorimetry | The measurement of the amount of fluorescence. (09 Oct 1997) |
| fluorinated hydrocarbon | A molecule which is almost entirely carbon and hydrogen, but has had at least one fluorine atom introduced to it that has replaced one of the hydrogen atoms. (09 Oct 1997) |
| fluorine | <chemistry, element> A non-metallic, gaseous element, strongly acid or negative, or associated with chlorine, bromine, and iodine, in the halogen group of which it is the first member. It always occurs combined, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepared nor kept in glass vessels. If set free it immediately attacks the containing material, so that it was not isolated until 1886. It is a pungent, corrosive, colourless gas. Fluorine unites with hydrogen to form hydrofluoric acid, which is the agent employed in etching glass. It occurs naturally, principally combined as calcium fluoride in fluorite, and as a double fluoride of aluminium and sodium in cryolite. Atomic weight: 19 Abbreviation: F Origin: NL. Fluorina: cf. G. Fluorin, F. Fluorine. So called from its occurrence in the mineral fluorite. (30 Mar 1998) |
| fluorine compounds | Inorganic compounds that contain fluorine as an integral part of the molecule. (12 Dec 1998) |
| fluorine radioisotopes | Unstable isotopes of fluorine that decay or disintegrate emitting radiation. F atoms with atomic weights 17, 18, and 20-22 are radioactive fluorine isotopes. (12 Dec 1998) |
| fluorite | <chemical> Calcium fluoride, a mineral of many different colours, white, yellow, purple, green, red, etc, often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a flux. Some varieties are used for ornamental vessels. Also called fluor spar, or simply fluor. Source: Websters Dictionary (01 Mar 1998) |
| fluorite objective | Microscope objective corrected for spherical and chromatic aberration at two wavelengths. Better than an ordinary objective corrected at one wavelength but inferior to (and much cheaper than) a planapochromatic objective. (18 Nov 1997) |
| fluoro- | See: fluor-. (05 Mar 2000) |
| fluoro-2,4-dinitrobenzene | A reagent used to combine with the free NH2 group of the NH2-terminal amino acid residue in a peptide, thus marking this residue; the combined forms are known as DNP-proteins, Dnp-aminoacyl, etc., the fluorine having been replaced to leave a dinitrophenyl residue (DNP, Dnp, or N2Ph-) attached to the NH2 group. Synonym: Sanger's reagent. Acronym: FDNB (05 Mar 2000) |
Synonyms : Fluorinated Telomer Alcohols, Fluoro-Telomer Alcohols, Polyfluorinated Telomer Alcohols, Telomer Fluorocarbons, Alcohols, Fluorinated Telomer, Alcohols, Fluoro-Telomer, Alcohols, Polyfluorinated Telomer, Emulsions, Fluorocarbon, Fluoro Telomer Alcohols
Synonyms : 18F-FDG, Fluorine-18-fluorodeoxyglucose, Fluorodeoxyglucose F 18, 2 Fluoro 2 deoxy D glucose, 2 Fluoro 2 deoxyglucose, F 18, Fludeoxyglucose, F 18, Fluorodeoxyglucose, F18, Fluorodeoxyglucose, Fluorine 18 fluorodeoxyglucose, Fluorodeoxyglucose, 18F
Synonyms : 5-Fluoro-2'-Deoxyuridine-5'-Monophosphate, FdUMP, 5 Fluoro 2' Deoxyuridine 5' Monophosphate
Synonyms : Assay, Immunofluorometric, Assay, Time-Resolved Immunofluorometric, Assays, Immunofluorometric, Assays, Time-Resolved Immunofluorometric, Fluoroimmunoassays, Immunofluorometric Assay, Time-Resolved, Immunofluorometric Assays
Synonyms : Alcon Brand of Fluorometholone, Allergan Brand 1 of Fluorometholone, Allergan Brand 2 of Fluorometholone, Allergan Brand 3 of Fluorometholone, Cortisdin, Efflumidex, FML, FML Forte, FML Liquifilm, Flucon, Fluor-Op, Fluoro-Ophtal, Fluoropos, Isopto Flucon, Fluor Op
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| fluorocarbon |
a halocarbon in which some hydrogen atoms have been replaced by fluorine; used in refrigerators and aerosols
Ãâó: wordnet.princeton.edu/perl/webwn
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| fluorescent antibody technique |
an immunofluorescence technique in which antigen in tissue sections is located by homologous antibody labeled with fluorochrome (the single-layer technique) or by treating the antigen with unlabeled antibody followed by a second layer of labeled antiglobulin which is reactive with the unlabeled antibody (double-layer technique). Variations include direct, indirect, inhibition, and complement staining techniques.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| fluent aphasia |
a type of receptive aphasia in which speech is well articulated with satisfactory melodic intonation, syllable stress, and phrasing but has gross errors in grammatical structure and is lacking in content.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| fluoroscopy |
Fluoroscopy is used to provide moving picture X-rays which are shown on a monitor. Like normal X-rays it delivers a dose of ionizing radiation to the patient and so must only be used when the benefits to the patient outweigh the risk of developing cancer due to the radiation. Modern fluoroscopy is performed with devices called image intensifiers which provide acceptable images at relatively low doses of radiation. ...
Ãâó: en.wikipedia.org/wiki/Fluoroscopy
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| fluoroscope |
Fluoroscopy is used to provide moving picture X-rays which are shown on a monitor. Like normal X-rays it delivers a dose of ionizing radiation to the patient and so must only be used when the benefits to the patient outweigh the risk of developing cancer due to the radiation. Modern fluoroscopy is performed with devices called image intensifiers which provide acceptable images at relatively low doses of radiation. ...
Ãâó: en.wikipedia.org/wiki/Fluoroscope
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| Flu | a nonmetallic univalent element belonging to the halogens |
|---|---|
| Flu | a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light |
| Flu | an acid of fluorine and boron |
| Flu | a salt of fluoroboric acid |
| Flu | a halocarbon in which some hydrogen atoms have been replaced by fluorine |
| Flu | a plastic made with fluorocarbon |
| Flu | any of various fluorescent substances used in fluorescence microscopy to stain specimens |
| Flu | colorless gas haloform CHF3 (similar to chloroform) |
| Flu | an X-ray machine that combines an X-ray source and a fluorescent screen to enable direct observation |
| Flu | examination of body structures using a fluoroscope |
| Flu | a pathological condition resulting for an excessive intake of fluorine (usually from drinking water) |
| Flu | an antimetabolite used to treat certain cancers |
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