Quantitative Spectral Analysis
Mostrando 1-12 de 56 artigos, teses e dissertações.
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1. Ultrasonographic features of the normal thyroid gland in adult horses
RESUMO: Poucas análises foram publicadas com relação ao uso da ultrassonografia como método de avaliação da glândula tireoide hígida em equinos. Alguns trabalhos incluem a determinação das dimensões e características do parênquima. Por essas razões, este estudo teve como objetivo determinar com segurança as medidas tireoidianas a partir da com
Pesq. Vet. Bras.. Publicado em: 02/12/2019
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2. Quantitative image of fluorescence of ceramic and resin-cement veneers
Abstract The main of the study was quantify the effect of two ceramics with two underlying resin cements on apparent fluorescence levels. Buccal surfaces of two bovine incisors were ground flat producing one enamel and one dentin substrate. The veneers were fabricated (0.5 and 1.0 mm thickness) using two ceramics (IPSe.max Press and IPSe.max Zirpress, Ivocla
Braz. oral res.. Publicado em: 09/09/2019
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3. Mean scatterer space estimation from ultrasound signals combining singular spectral analysis and entropy
AbstractIntroduction: Ultrasound (US) is a nonionizing radiation capable of real time imaging at low cost. Its most attractive application is quantitative tissue characterization with the objective of differentiating normal tissues from diseased tissues. In this study, an automated method using singular spectrum analysis (SSA) to estimate the mean scatterer
Res. Biomed. Eng.. Publicado em: 2018-06
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4. NIR Monitoring and Modelling of Soybean Oil Methanolysis with Multivariate Curve Resolution-Alternating Least Squares with Correlation Constraint
Near infrared spectroscopy in-line monitoring and modelling of soybean oil methanolysis has been done using multivariate curve resolution alternating least squares (MCR-ALS) with correlation constraint. This constraint allows for quantitation of the methyl ester formed with little calibration effort and the MCR model provides additionally a general descripti
J. Braz. Chem. Soc.. Publicado em: 2017-05
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5. Ion Exchange Chromatography and Mass Bias Correction for Accurate and Precise Zn Isotope Ratio Measurements in Environmental Reference Materials by MC-ICP-MS
Precise and accurate d66/64Zn data for environmental reference materials (RMs) including rocks, sediments, soils and plants are presented in order to improve the metrological traceability and analytical control of Zn isotope ratio determinations in future environmental studies. Previously developed ion exchange chromatography protocols were adjusted to enabl
J. Braz. Chem. Soc.. Publicado em: 2017-02
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6. Morphological Interpretation of Reflectance Spectrum (MIRS) using libraries looking towards soil classification
The search for tools to perform soil surveying faster and cheaper has led to the development of technological innovations such as remote sensing (RS) and the so-called spectral libraries in recent years. However, there are no studies which collate all the RS background to demonstrate how to use this technology for soil classification. The present study aims
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-12
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7. As técnicas expandidas, figuras e configurações sonoras em Lopera per flauto de Salvatore Sciarrino
A presente pesquisa teve como objetivo descrever como as técnicas expandidas estão relacionadas com as configurações sonoras e as figuras descritas por Salvatore Sciarrino e utilizadas em suas peças para flauta solo, publicadas no caderno LOpera per Flauto. Tais técnicas e figuras são fundamentais para a compreensão de suas obras. Em nossa leitura an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/03/2012
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8. Análise da estacionariedade e gaussianidade da atividade elétrica neural, do ruído biológico e do ruído de instrumentação
This work analyzes signals of spontaneous neuronal electrical activity, measured by devices known as Multi-Electrode Arrays (MEA), which are the substrate of neuronal cultures of rat hippocampus. The database under investigation consists of five signals: (i) instrumentation noise, (ii) biological noise, (iii) inactive culture and (iv) two active culture expe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2011
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9. Comparative analysis of circular and triangular gold nanodisks for field enhancement applications
In this paper, we present a quantitative comparison of circular and triangular gold nanodisks with the same length and thickness. The method of moments is used to solve numerically the scattering problem. With this model, we investigate the spatial near field distribution, spectral response, far field diagrams, and bandwidth wavelength of these particles. Ou
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2010-12
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10. Urinary proteomics evaluation in interstitial cystitis/painful bladder syndrome: a pilot study
PURPOSE: Interstitial cystitis/painful bladder syndrome (IC/PBS) is characterized by chronic pain, pressure and discomfort felt in the pelvis or bladder. An in-depth shotgun proteomics study was carried out to profile the urinary proteome of women with IC/PBS to identify possible specific proteins and networks associated with IC/PBS. MATERIALS AND METHODS: U
International braz j urol. Publicado em: 2010-08
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11. Estudo da composição e distribuição da alteração hidrotermal do Cerro Aguas Calientes, Salta, Argentina a partir de imagens do sensor ASTER
The conception of the ASTER sensor by the end of the 1990s brought new benefit to the mapping of hydrothermal alteration zones, initiating a promising phase in remote sensing of earthly resources. Recent studies utilizing this sensor for mineralogical mapping have proved its effectiveness. This study tested the hyperspectral classification in ASTER multispec
Publicado em: 2009
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12. Analysis of spectral influence of the NMR CWFP parameters in flow quantitative measurements / Análise da influência dos parâmetros espectrais da RMN-CWFP em medidas quantitativas em fluxo
A seqüência de pulsos RMN-CWFP (Ressonância Magnética Nuclear - Precessão Livre de Onda Contínua) tem encontrado diversas aplicações na ciência. O presente trabalho analisa a grande sensibilidade dessa seqüência em relação a variações de seus parâmetros espectrais, exclusivamente em uma caracterização teórico-experimental da RMN-CWFP em fl
Publicado em: 2009