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Rectificacion de aceros fragiles y ductiles: Parametros de entrada para obtener los mejores resultados
(2002-01-01)
In this work, the behavior of the steel surface grinding process with conventional grinding wheels was studied for various grinding conditions and a fixed dressing condition. The input parameters (wheel speed, workpiece ...
Effect of tillage on fractal indices describing soil surface microrelief of a Brazilian Alfisol
(Elsevier B.V., 2006-10-01)
Soil surface roughness is known to influence water infiltration, runoff and erosion. Soil surface roughness changes with management and weather and its mathematical description still remains an important issue. The main ...
Surface Roughness Analysis of Four Restorative Materials Exposed to 10% and 15% Carbamide Peroxide
(Quintessence Publishing Co Inc, 2011-03-01)
The aim of this study was to evaluate the effects of carbamide peroxide (CP) on surfaces of different restorative materials. Porcelain, composite resin, glass ionomer, and amalgam were analyzed in this study. Surface ...
Polishing methods of an alumina-reinforced feldspar ceramic
(2006-12-01)
The purpose of this study was to test the hypothesis that mechanical polishing methods of ceramic surfaces allow similar superficial roughness to that of glazed surfaces. Twenty-five Vitadur Alpha ceramic discs (5 mm x 2 ...
Argon-based atmospheric pressure plasma enhances early bone response to rough titanium surfaces
(Wiley-Blackwell, 2012-07-01)
This study investigated the effect of an Argon-based atmospheric pressure plasma (APP) surface treatment operated chairside at atmospheric pressure conditions applied immediately prior to dental implant placement in a ...
Quantitative fractography by digital image processing: NIH Image macro tools for stereo pair analysis and 3-D reconstruction
(Blackwell Science, 2001-10-01)
A set of NIH Image macro programs was developed to make qualitative and quantitative analyses from digital stereo pictures produced by scanning electron microscopes. These tools were designed for image alignment, anaglyph ...
Effect of brushing with conventional versus whitening dentifrices on surface roughness and biofilm formation of dental ceramics
(2012-05-01)
The aim of this study was to evaluate the effect of conventional and whitening dentifrices on the weight loss, surface roughness, and early in situ biofilm formation on the surface of dental ceramics. Standardized feldspar ...
Weight loss and surface roughness of hard chairside reline resins after toothbrushing: Influence of postpolymerization treatments
(2006-05-01)
Purpose: To evaluate the effect of 2 postpolymerization treatments on toothbrushing wear (weight loss) and surface roughness of 3 autopolymerized reline resins-Duraliner II (D) (Reliance Dental), Kooliner (K) (Coe ...
Study of polypropylene surface modification by air dielectric barrier discharge operated at two different frequencies
(2012-10-18)
In this work, air dielectric barrier discharge (DBD) operating at the line frequency (60 Hz) or at frequency of 17 kHz was used to improve the wetting properties of polypropylene (PP). The changes in the surface hydrophilicity ...
Effect of different finishing and polishing techniques on the surface roughness of microfilled, hybrid and packable composite resins
(Fundação Odontológica de Ribeirão Preto, 2005-04-01)
Este estudo avaliou a rugosidade superficial (Ra, µm) de 2 resinas compostas microparticuladas (Durafill; Perfection), 1 híbrida (Filtek Z250) e 2 compactáveis (Surefil; Fill Magic), antes (baseline) e após a realização ...