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Ion beam analysis of a-C:H films on alloy steel substrate
(2013-10-31)
An a-C:H thin film deposited by plasma immersion ion implantation and deposition on alloy steel (16MnCr5) was analyzed using a self-consistent ion beam analysis technique.In the self-consistent analysis, the results of ...
Calcium hydroxide root canal sealers: Evaluation of pH, calcium ion concentration and conductivity
(1997-12-01)
The calcium hydroxide ionization of four root canal sealers (Sealapex, CRCS, Sealer 26, and Apexit) was studied by measuring conductivity and pH and by conducting atomic absorption spectrophotometry. Samples 6 mm in diameter ...
SIMPLE AND ACCURATE EVALUATION OF HYDROGEN-ION CONCENTRATIONS IN AQUEOUS-SOLUTIONS OF FIXED IONIC-STRENGTH
(Elsevier B.V., 1979-01-01)
pH and calcium ion release evaluation of pure and calcium hydroxide-containing Epiphany for use in retrograde filling
(Universidade de São Paulo (USP), Faculdade de Odontologia de Bauru, 2011-01-01)
Objective: Hydroxyl (OH(-)) and calcium (Ca(++)) ion release was evaluated in six materials: G1) Sealer 26, G2) White mineral trioxide aggregate (MTA), G3) Epiphany, G4) Epiphany + 10% calcium hydroxide (CH), G5) Epiphany ...
Apocynin: Chemical and biophysical properties of a NADPH oxidase inhibitor
(2013-03-01)
Apocynin is the most employed inhibitor of NADPH oxidase (NOX), a multienzymatic complex capable of catalyzing the one-electron reduction of molecular oxygen to the superoxide anion. Despite controversies about its ...
Evaluation of the combined solar TiO2/photo-Fenton process using multivariate analysis
(2004-04-21)
The effect of combining the photocatalytic processes using TiO 2 and the photo-Fenton reaction with Fe3+ or ferrioxalate as a source of Fe2+ was investigated in the degradation of 4-chlorophenol (4CP) and dichloroacetic ...
pH-changes during intracoronal bleaching: An in vivo study
(2011-03-01)
Objectives: This study aimed to measure pH changes during 14 days intracoronal bleaching with hydrogen peroxide/sodium perborate and carbamide peroxide/sodium perborate. Materials and methods: Twenty patients presenting ...
Production, characterization and properties of polysaccharide depolymerizing enzymes from a strain of Curvularia inaequalis
(2001-12-01)
Xylanase, β-glucosidase, β-xylosidase, endoglucanase and polygalacturonase production from Curvularia inaequalis was carried out by means of solid-state and submerged fermentation using different carbon sources. β-Glucosidase, ...
Occurrence of killer yeasts in leaf-cutting ant nests
(2002-12-01)
Killer activity was screened in 99 yeast strains isolated from the nests of the leaf-cutting ant Atta sexdens against 6 standard sensitive strains, as well as against each other. Among this yeast community killer activity ...