Curve Fitting
Mostrando 25-36 de 138 artigos, teses e dissertações.
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25. Desidratação parcial de tomate cereja em secador de bandejas vibradas com reciclo
In this essay, it has been analyzed the partial dehydration of oval cherry tomato Lycopersicum sp. Mill, by using a vibrated tray dryer with recycle until the tomatoes reached 15% of its initial water content what represents 70,19% of humidity in wet basis or 2,35 kg of water/kg of dry mass in dry basis. The dryer used consists basically of a vertical dryer
Publicado em: 2011
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26. Regionalização de vazões de referência Q7,10 e Q90
The main objective of the research was the study and application of different methods for estimating ten years return period minimum annual seven consecutive days low flows (Q7,10) and minimum flows associated with remaining 90% in time (Q90), for the region between Doce and Itabapoana basins, through the hydrological regionalization. The three compared meth
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/08/2010
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27. Efeito fotoiniciador sobre propriedades físicas, mecânicas e térmicas de compósitos experimentais fotoativados por luz de lâmpada halógena e LEDs / Effect of the photo-initiator on physical, mechanics and thermal properties of experimental composites photo-activated for halogen lamp and LEDs
The aim of this study was to analyze the spectrum of different lightcuring units (LCUs) and photo-initiators and yours influence in the physical and thermal properties and bond strength (BS) of experimental resin composites with different photo-initiators. A blend with BisGMA, UDMA, BisEMA, TEGDMA and 65 wt% of silanated filler particles was prepared with CQ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/08/2010
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28. Eliminação de artefatos de estímulo em potenciais evocados somatossensitivos. / Removal of stimulus artifact in somatosensory evoked potentials.
Os potenciais evocados têm uma consagrada utilização em clínica. Sua obtenção é dificultada pela presença de outros sinais biológicos, de artefatos de movimento, de ruído eletrônico, de interferência da rede elétrica e de artefatos de estímulo. A média síncrona ou promediação é um método que elimina os sinais que não estejam sincronizado
Publicado em: 2010
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29. Study of metrological dispersions in Mulltilayer Perceptrons, one type of artificial neural networks, through calibration curve application. / Estudo das dispersões metrológicas em redes neurais artificiais do tipo Multilayer Perceptrons através da aplicação em curvas de calibração.
The present study investigates metrological dispersions in fitting partially or totally unknown functions. An alternative method is the application of a multilayer perceptron neural network used here to fit functions. The fitting functions are calibration curves from calibration indications of measurement systems or instruments. These curves hold metrologica
Publicado em: 2009
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30. Regression models for growth description of the irrigated and unirrigated pruned coffee tree / Modelos de regressão para descrição do crescimento do cafeeiro irrigado e não irrigado após recepa
The irrigated coffee crop grown has expanded throughout the national territory, especially where production is more significant as Minas Gerais, Espirito Santo and São Paulo. Thus, irrigation has been a great producer ally, because, if well conducted, has reduced losses and increased profitability. The aim of this study was to test the linear and nonlinear
Publicado em: 2009
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31. Efeito de substituiÃÃo atÃmica no calor especÃfico da L-arginina fosfatada monohidratada e do FexZn1-xF2
A Physical Properties Measurement System â PPMS was assembled to perform heat capacity (Cp) measurements in the temperature range 1.8 â 390 K. The system was used to investigate the temperature dependence of Cp in samples of L-arginine phosphate monohydrated (LAP) at low temperatures. The measurements were carried out in pure LAP and in doped samples: Cu(0
Publicado em: 2009
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32. Medida de uma curva contínua do poder de freamento de partículas alfa em Al na região do pico de Bragg / Mensure of the stopping power continuous curve for alpha particles in Al foils around the Bragg peak energy
We present in this work experimental energy loss curves for alpha particles in Al foils around the Bragg peak energy. Our method is based on an integration of the energy spectrum, combining elastic scattering in thick targets with transmission method, providing an almost continuous energy loss curve with $2-3\%$ precision. To achieve this precision we perfor
Publicado em: 2008
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33. Estimação não parametrica da trajetoria percorrrida por um veiculo autonomo / Non-parametric curve estimation of an autonomous vehicle trajectory
The objective of this study is to find a smooth function joining two points A and B with minimum length constrained to avoid fixed subsets. A penalized nonparametric method of finding the best path is proposed. The method is generalized to the situation where stochastic measurement errors are present. In this case, the proposed estimator is consistent, in th
Publicado em: 2008
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34. Modelo de von Bertalanffy generalizado aplicado a curvas de crescimento animal / Generalized von Bertalanffy model applied to growth animal curves
The objective of this work is to study the curve of growth in weight of several animaIs specimens, to establish standards of metabolism for animal class. The parameters of the non-linear generalized form of the von Bertalanffy mo deI applied to weight growth curves were adjusted to identify with ones describe better the growth of the animal on the areas of a
Publicado em: 2008
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35. Determinação turbidimétrica do antidepressivo amitriptilina em sistema fia explorando a formação do par iônico com lauril sulfato de sódio
The present work purposes the development of an analytical method for amitriptyline determination in pharmaceutical formulations using FIA system. It was based on interaction of amitriplyline with sodium lauryl sulphate in acid medium (pH 2.5) resulting in the ion-pair formation turbidimetrically detected at 410 nm. The fitting regression equation for range
Química Nova. Publicado em: 2008
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36. Distribuição generalizadas de desvanecimento de curto prazo : medições de campo e validações / Generalized short term fading distributions : field measurements and validations
This thesis provides a thorough comparison among the various short term fading distributions, which are handled so as to give their best fit over data obtained from field measurements. Such distributions include those already well known in the literature - namely Rayleigh, Rice, Nakagami, Hoyt e Weibull - as well as two recently proposed models, namely k-µ
Publicado em: 2008