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Thermal treatment effects on phase transitions in P(VDF-TrFE)
(1999-12-01)
Differential scanning calorimetry (DSC) studies were performed for 60/40 P(VDF-TrFE). The results not only confirm the importance of thermal history but also show that the samples with various configurations in terms of ...
NaF treatment increases TNF-alpha and resistin concentrations and reduces insulin signal in rats
(Elsevier B.V. Sa, 2012-04-01)
The use of fluoridated products has significantly contributed to the reduction in rates of dental caries. However, excessive sodium fluoride (NaF) intake promotes inhibition of glycolysis, decrease in insulin secretion, ...
Controlled fluorination of a-C:F:H films by PECVD of ethylene-hexafluorobenzene mixtures
(Elsevier B.V. Sa, 2008-12-25)
Highly fluorinated plasma polymers are chemically inert,acid resistant and have low friction coefficients, thereby being useful in chemical laboratories and for tribological applications. Here we report the plasma ...
Scandium fluorides
(1997-11-14)
A new modification of scandium fluoride has been synthesised. The compound is deficient in fluorine, with the composition ScF2.76. It belongs to the tetragonal system, lattice parameters being a = 3.792 and c = 6.740 Å and ...
Mechanical and tribological properties of a-C:H:F Thin Films
(2013-07-01)
a-C:H films were grown by plasma-enhanced chemical vapor deposition in atmospheres composed by 30 % of acetylene and 70 % of argon. Radiofrequency signal (RF) was supplied to the sample holder to generate the depositing ...
Urinary fluoride output in children following the use of a dual-fluoride varnish formulation
(Universidade de São Paulo (USP), Faculdade de Odontologia de Bauru, 2009-05-01)
Objective: This study evaluated the bioavailability of fluoride after topical application of a dual-fluoride varnish commercially available in Brazil, when compared to Duraphat T. Material and methods: The urinary fluoride ...
External control of the public water supply in 29 Brazilian cities
(Sociedade Brasileira de Pesquisa Odontológica (SBPqO), 2012-01-01)
The fluoridation of public water supplies is considered the most efficient public health measure for dental caries prevention. However, fluoride levels in the public water supply must be kept constant and adequate for the ...
Surface roughness and hardness of a composite resin: influence of finishing and polishing and immersion methods
(Universidade Federal de São Carlos (UFSCar), Dept Engenharia Materials, 2010-07-01)
This study evaluated the finishing and polishing effect on the surface roughness and hardness of the Filtek Supreme XT, in fluoride solutions. Specimens were prepared (n = 140) with half of the samples finished and polished ...
In(PO3)3 stabilised fluoroindate glasses
(1998-07-24)
Results on thermal and optical characterization of new lanthanide containing fluoroindate glasses in the system InF3-BaF2-In(PO3)3 are presented. Good optical quality and very stable glasses presenting up to 5 mm in thickness ...
Energy transfer between Pr3+ ions in a fluoroindate glass
(1998-06-01)
The efficiency of energy transfer (ET) between Pr3+ ions in a fluoroindate glass is determined. ET rates, WET, were determined for dilute samples and the results show a dependence of WET on the Pr3+ concentration. ET ...