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Mostrando ítems 7021-7030 de 20881
Electrochemical Technologies for Detecting and Degrading Benzoquinone Using Diamond Films
(2019-01-01)
In this work, the detection and quantification of p-benzoquinone (BQ) was performed by differential pulse voltammetry (DPV) with a diamond film sensor. The calibration curve and the limits of detection and quantification ...
A Fisheye image matching method boosted by recursive search space for close range photogrammetry
(2019-06-01)
Close range photogrammetry (CRP) with large field-of-view images has become widespread in recent years, especially in terrestrial mobile mapping systems (TMMS). However, feature-based matching (FBM) with omnidirectional ...
Modeling spatial dynamics applied to the assessment of urban growth in the vicinity of pipelines in Rio de Janeiro
(2018-07-01)
The use of mathematical models in environmental studies allows significant scientific contributions to the physical planning of an area, since they help to understand the impact of changes in land cover and predict future ...
Six-month performance of restorations produced with the ethanol-wet-bonding technique: a randomized trial
(2019-07-01)
This double-blind randomized controlled clinical trial evaluated the effectiveness of dentin pretreatment with 100% ethanol (EWBT - ethanol wet bonding technique) and different adhesive protocols in noncarious cervical ...
Ultrastructure of cementum and periodontal ligament after continuous intrusion in humans: a transmission electron microscopy study
(Oxford Univ Press, 2001-02-01)
An ultrastructural study of the cementum and periodontal ligament (PDL) changes after continuous intrusion with two different and controlled forces in humans was carried out. Twelve first upper premolars, at stage 10 of ...
Clay slurries analysis using inductively coupled plasma optical emission spectrometry with axial view configuration
(Soc Brasileira Quimica, 2002-11-01)
The goal of this study was to evaluate the feasibility of direct introduction of clay slurries in an inductively coupled plasma optical emission spectrometer with axial view configuration. Calibration was performed using ...
Optimization of an x-rays fluorescence spectrometer for analyzing a tantalite sample
(2017-01-01)
X-rays fit the electromagnetic spectrum region between 0.1 and 100 Å. The X-rays fluorescence (XRF) analytical technique comprises the excitation process associated to the sample irradiation by a primary beam emanated from ...
Estimating daily global radiation from common meteorological variables in a humid subtropical environment
(Univ Federal Mato Grosso, 2019-11-01)
Knowledge of solar potential is essential in the design and simulation of systems that convert solar radiation in electric power or available heat in fluids, as well as in agricultural studies focused on irrigation management ...
Electroanalytical determination of a reactive dye currently used in affinity chromatography for protein purificaton
(Soc Brasileira Quimica, 2004-05-01)
ELECTROANALYTICAL DETERMINATION OF A REACTIVE DYE CURRENTLY USED IN AFFINITY CHROMATOGRAPHY FOR PROTEIN PURIFICATON. Procion Green HE-4BD is a reactive dye currently used in affinity purification, and commonly present as ...
Harmonization of color measurements for dental application
(Wiley-Blackwell, 2020-08-06)
This multicenter study evaluated the effect of harmonizing spectrophotometric (d/8 degrees) color measurements by using actual dental materials of clinically relevant thickness and translucency as calibration tiles. Ten ...