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Showing 1-25 of 25 results for "372757" within Papers
[Fluoride].
B Herazo Acuna et al.
Revista de la Federacion Odontologica Colombiana, 33(148), 61-87 (1984-01-01)
Pradip B Sarawade et al.
Journal of hazardous materials, 173(1-3), 576-580 (2009-09-18)
In this article we report recovery of mesoporous silica from the waste material (hexafluorosilicic acid) of phosphate fertilizer industry. The process involves the reaction of hexafluorosilicic acid (50 ml, 24 wt% H(2)SiF(6)) and 100ml, 0.297 M Na(2)CO(3) to generate the
Fluoride shortage has become acute in Canada.
Journal (Canadian Dental Association), 48(11), 702-703 (1982-11-01)
Hidemasa Shimpo
Journal of prosthodontics : official journal of the American College of Prosthodontists, 17(4), 300-307 (2008-01-22)
Titanium dentures have recently increased in popularity. A decrease in the retentive force of the titanium clasps has frequently been observed. This study investigated the effect of retentive arm design and chemical polishing of titanium clasps. Four Akers clasps with
K L Prado et al.
Medical physics, 11(4), 474-479 (1984-07-01)
Samples of potassium hexafluorosilicate (K2SiF6) and polytetrafluoroethylene (C2F4)n were irradiated in the bremsstrahlung beam from a clinical linear electron accelerator at integral values of endpoint energy between 13 and 32 MeV. Sample positron activities produced by the reactions 39K(gamma, n)
H H Xu et al.
Operative dentistry, 25(2), 90-97 (2001-02-24)
Currently available glass-ionomer, resin-modified glass-ionomer, and compomer materials have relatively low strength and toughness and, therefore, are inadequate for use in large stress-bearing posterior restorations. In the present study, ceramic single-crystalline whiskers were mixed with fluorosilicate glass particles and used
H Inoue et al.
The journal of adhesive dentistry, 3(2), 129-136 (2001-09-26)
To compare the microtensile bond strength (MTBS) of two single-step adhesive systems to two types of bur-prepared dentin. Using either of two adhesives, the experimental MZ-2000 (MZ) and the commercial One-Up Bond F (OUB), resin composite was bonded to flat
Toshiyuki Suge et al.
Dental materials : official publication of the Academy of Dental Materials, 26(1), 29-34 (2009-09-15)
Ammonium hexafluorosilicate [SiF: (NH(4))(2)SiF(6)] was prepared in order to overcome the tooth discoloration caused by diamine silver fluoride [AgF: (NH(3))(2)AgF] application. We employed a single concentration of SiF solution in our previous study; therefore, it is still unclear how the
T G Reeves
Community dental health, 13 Suppl 2, 21-26 (1996-09-01)
This paper summaries the technical aspects of water fluoridation in the United States, and gives an overview of the engineering aspects of water fluoridation world-wide. The status of water fluoridation in the USA is summarised. Fluoride chemicals used in the
T Mito et al.
Investigative ophthalmology & visual science, 33(1), 172-177 (1992-01-01)
We studied ouabain-sensitive Na-K adenosine triphosphatase (ATPase) activities in the iris-ciliary body of rabbit eyes after lensectomy-vitrectomy. Changes in enzyme activities were quantitatively investigated in the plasma membrane of iris-ciliary body at 0 or 7 hours and at days 1
Stefan Bücker et al.
Talanta, 94, 335-341 (2012-05-23)
The surface of raw multicrystalline silicon wafers is treated with HF-HNO(3) mixtures in order to remove the saw damage and to obtain a well-like structured surface of low reflectivity, the so-called texture. The industrial production of solar cells requires a
L Chen et al.
Anesthesiology, 63(6), 608-610 (1985-12-01)
Hypoxic pulmonary vasoconstrictor (HPV) responses were measured with repeated intermittent hypoxic challenges in eight non-traumatized closed chest dogs anesthetized with pentobarbital. The right lung was ventilated continuously with 100% O2 while the left lung was either ventilated with 100% O2
Fate of fluorosilicate drinking water additives.
Edward Todd Urbansky
Chemical reviews, 102(8), 2837-2854 (2002-08-15)
G M Whitford et al.
Archives of oral biology, 53(11), 1037-1041 (2008-06-03)
Fluoride in drinking water may be present from natural sources or added as sodium fluoride (NaF), sodium silicofluoride (Na(2)SiF(6)) or fluorosilicic acid (H(2)SiF(6)). Results from an early study with rats suggested that, when ingested as Na(2)SiF(6), the absorption and excretion
Mbarka Gouider et al.
Journal of hazardous materials, 170(2-3), 962-968 (2009-06-16)
Fluoride content and flow-rate of fertilizer plant wastewater from phosphoric acid and/or triple superphosphate (TSP) production lead to the discharge of several thousand tons of fluoride (F(-)) per year and even more for phosphate (PO4(3-)). Since sustainability is an important
Water fluoridation: pollutant or panacea?
D Mac Auley
Irish medical journal, 93(6), 165-166 (2000-12-06)
Rosangela M M Sawan et al.
Toxicology, 271(1-2), 21-26 (2010-03-02)
Higher blood lead (BPb) levels have been reported in children living in communities that receive fluoride-treated water. Here, we examined whether fluoride co-administered with lead increases BPb and lead concentrations in calcified tissues in Wistar rats exposed to this metal
B Raikhlin-Eisenkraft et al.
Harefuah, 126(5), 258-259 (1994-03-01)
A fatal case of poisoning due to ingestion of an apparently innocuous household product is described. A healthy 28-year-old man accidentally drank floor polish (Cristalizador, a Spanish import). On arrival at the emergency room a few hours later he passed
[Experimental study of the biological effect of salts of hydrofluosilicic acid].
G I Rumiantsev et al.
Gigiena i sanitariia, (11)(11), 80-82 (1988-11-01)
L R Petersen et al.
American journal of public health, 78(6), 711-713 (1988-06-01)
For 12 hours, excess hydrofluorosilicic acid was diverted to a 127-home community water supply. Fluoride levels peaked at 51 parts per million (ppm). Water acidification caused copper to leach from the domestic plumbing; raising copper levels to 25-41 ppm. Fifty-two
A Villa et al.
Community dental health, 26(3), 132-137 (2009-09-29)
To assess whether there was any significant difference in the average fractional urinary fluoride excretion (FUFE) values among adults consuming (NaF) fluoridated Ca-free water (reference water), naturally fluoridated hard water and an artificially (H2SiF6) fluoridated soft water. Sixty adult females
In pursuit of truth.
R Masters
British dental journal, 199(10), 656-656 (2005-11-29)
Vladimir O Gelmboldt et al.
Dalton transactions (Cambridge, England : 2003), (27)(27), 2915-2924 (2007-07-04)
Two novel compounds, (L(1)H)(2)[SiF(6)] x 2H(2)O (1) and (L(2)H)(2)[SiF(5)(H(2)O)](2) x 3H(2)O (2), resulting from the reactions of H(2)SiF(6) with 4'-aminobenzo-12-crown-4 (L(1)) and monoaza-12-crown-4 (L(2)), respectively, were studied by X-ray diffraction and characterised by IR and (19)F NMR spectroscopic methods. Both
J A Lalumandier et al.
Journal of public health dentistry, 61(2), 92-98 (2001-07-28)
We determined the knowledge level of water plant operators who fluoridate drinking water, and we compared small and large water plants. A pretested survey was sent to 2,381 water plant operators in 12 states that adjust the fluoride concentration of
[Evaluation of 2 kinds of food poisoning caused by fluoride compounds].
U Werner et al.
Zeitschrift fur die gesamte Hygiene und ihre Grenzgebiete, 31(10), 568-570 (1985-10-01)
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