fluorine

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fluorine

 (F) [floor´ēn]
a chemical element, atomic number 9, atomic weight 18.998. (See Appendix 6.)
fluorine 18 a radioactive isotope of fluorine, atomic mass 18, having a half-life of 1.8925 hours; it has been used as a tracer in positron emission tomography.

fluor·ine (F),

(flōr'ēn), Avoid the mispronunciation fluorīne.
A gaseous chemical element, atomic no. 9, atomic wt. 18.9984032; 18F (half-life of 1.83 h) is used as a diagnostic aid in various tissue scans.
[L. fluere, flow]

fluor·ine

(F) (flōr-ēn')
A gaseous chemical element; atomic no. 9, atomic weight 18.9984032; 18F (half-life of 1.83 hours) is used as a diagnostic aid in various tissue scans.

fluor·ine

(F) (flōr-ēn')
A gaseous chemical element used as a diagnostic aid in various tissue scans.
References in periodicals archive ?
(3.) van Ravenstein, L, Ming, WH, van de Grampel, RD, van der Linde, R, de With, G, Loontjens, T, Thune, PC, Niemantsverdriet, JW, "Low Surface Energy Polymeric Films from Novel Fluorinated Blocked Isocyanates." Macromolecules, 37 (2) 408-413 (2004)
R-1234yf has a GWP of 4, (4) and among the fluorinated propene isomers is the one closest to commercialization.
(6) With both hydrophobic and oleophobic characteristics, the fluorinated portions of the polymer tend to migrate to the surface of the coating, providing the desired properties.
Suckling (4) subsequently pointed out how the fluorinated anaesthetics were linked to the refrigerants (known as "Arctons[TM]" by ICI in the U.K.).
Since Guntherodt and coworkers reported studies on mixed monolayer system containing fluorinated compounds estimated by friction force microscopy [6].
The labelling will clearly state the fluorinated gases included in products and oblige manufacturers to include manuals explaining their potential impact on the climate to consumers.
Each pump is constructed of PTFE (fluorinated plastics) on all wetted surfaces to handle acids, bases, and other aggressive vapors, and is virtually maintenance free with no water or oil needed to operate.
The polymer is highly resistant to elevated temperatures and harsh environments, bridging the performance gap between traditional polyamide and polyester polymers and exotic fluorinated plastic polymers.
FEP (Fluorinated Ethylene Propylene) is the most common insulation.
The SYGEF[R] PVDF HP Flex Tubing System offers a cost-effective solution for the conveyance of ultrapure water and chemicals versus PFA (perfluoroalkoxy) and FEP (fluorinated ethylene propylene) resin based tubing systems.
The introduction of fluorinated quinolones has revolutionized topical ototherapy.
The pump bodies for AM Series Pumps are constructed of reinforced thermoplastic polymers and internal components are composed of ceramic oxides, HD carbon and fluorinated elastomers so that no metal part comes in contact with the media being pumped.