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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 601 for “"fluoride"”.
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Fluoride uptake by enamel from stannous fluoride and prophylaxis pastes
… paste (containing nine per cent stannous fluoride) prior to topical application of 10 per cent aqueous solution of stannous fluoride would promote a significantly greater enamel fluoride uptake than when the solution was applied alone; and (2) to determine whether rinsing the mouth with …
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Sodium Fluoride Hopper Crystals
… despite the current understanding and use of fluoride. Faster dissolving crystals of NaF in a dentifrice could improve the efficacy of current preventative treatments. In this study, crystals of sodium fluoride with a high surface area to volume ratio were prepared by the addition of an …
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The sorption of fluoride ion with special reference to fluoride removal from potable waters
… discovery that even very small concentrations of fluorides in drinking waters are sufficient to cause the serious dental dystrophy commonly known as mottled enamel, has around widespread interest and concern. Federal and State surveys have been conducted to determine the geographical distribution …
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Pipe Diffusion in Lithium-Fluoride
Made available in DSpace on 2015-05-12T17:12:22Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6100157.PDF: 2688214 bytes, checksum: 1c8733e4efd74ec9abe74eb5cc2558b8 (MD5) Previous issue date: 1960
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Lattice disorder in calcium fluoride.
Massachusetts Institute of Technology. Dept. of Metallurgy. Thesis. 1966. Sc.D.
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Available fluoride ion in solution and one minute fluoride release rate of a toothpaste formulation
… to occur, bioavailable calcium, phosphate, and fluoride ions must be present at the surface of the tooth. Toothpaste products supply bioavailable fluoride ions to the oral cavity. Calcium and phosphate ions are supplied primarily through the saliva, but in limited quantity. In this research, …
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Far-infrared superradiance in methyl fluoride
… emission, has been observed in methyl fluoride, which is optically pumped by a pulsed carbon dioxide TEA laser operated on the P(20) line at 9.55 ~m. The far-infrared (FIR) super-radiant pulses, at a wavelength of 496 microns, were identified by the pressure (p) dependence of their …
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Mechanism of hydrolysis of triphenylsilyl fluoride
Thesis: M.S., Massachusetts Institute of Technology, Department of Chemistry, 1948
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Fluoride Varnish Use Among Dentists in Virginia
Purpose: The purpose of this study was to asses fluoride varnish use by dental practitioners in Virginia. Methods: Using a cross sectional survey design, all dentists in Virginia who are members of the Virginia Dental Association (VDA) were sent an online survey about usage and knowledge of …
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High valent element fluorosulfates and fluoride- fluorosulfates
… (FOSO2F) in the preparation of mixedfluoride fluorosulfates of the type EF,(SO3F),„, some of them potential Lewis acids in both HF and HSO3F, was explored. Reactions involved the oxidative addition of FOSO2F to a number of binary fluorides (SF4, SeF4 and AsF3) as well as the …
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Metal carbonyl fluoride complexes / by Ernst Horn
Typescript (photocopy)
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Mechanism of fluoride-based etch and clean processes
Fluoride-containing solutions are widely used to etch silicon dioxide-based films. A critical issue in integrated circuit (IC) and microelectromechanical systems (MEMS) fabrication is achievement of adequate selectivity during the etching of different film materials when they are present in …
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Energy exchange processes in erbium-doped fluoride glasses
… for the spectroscopic behaviour of Er3+ ions in fluoride glass materials. The model particularly concentrates on Er3+ :ZB(L)AN glasses with very heavy Er3+ doping levels. Under these circumstances the energy level dynamics can be dominated by non-linear multiple-ion cross relaxation processes.
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CHARACTERIZATION OF ELECTROSPRAYED POLY(VINYLIDENE FLUORIDE)/CNT NANOCOMPOSITE
PVDF, Poly(vinylidene fluoride), is a polymer that has been studied for over four decades due to its good electromechanical properties, stability, and durability in various environments. Currently, PVDF is the only commercially available piezoelectric polymer. PVDF is a polymorph, which indicates …
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Selective fluoride removal by aluminum precipitation & membrane filtration
Fluoride is an anionic constituent of most natural surface and ground waters. At low concentrations it has the beneficial effect of improving dental health, but at high concentrations it causes skeletal and other problems. The drinking water standard for fluoride is 4.0 mg/L, but even at this level …
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Ionic liquids derived from nonafluorobutan-1-sulfonyl fluoride
… chloride and nonafluorobutane-1-sulfonyl fluoride. The quaternary imidazolium salts thus obtained constitute a new subfamily of thermally stable and remarkably hydrophobic ionic liquids with melting points in the range 0a??40oC and solubilities in water and organic solvents (aromatic …
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Preliminary investigations of gas phase hydrogen fluoride saccharification
Thesis (M.S.)--Michigan State University. Dept. of Chemical Engineering, 1985
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Terbium-based fluoride and oxide crystals for visible lasers
In the course of this thesis, Tb3+-doped fluoride and oxide materials have been investigated with regard to their properties as potential laser active materials with emission in the visible range. Main spectroscopic and laser investigations have been carried out in LiLuF4 and LiTbF4, KY3F10 and …
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