Average Rate Of Change
Mostrando 25-36 de 222 artigos, teses e dissertações.
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25. Determination of non-isothermal crystallization rate constant of a rotational molding grade LLDPE
The purpose of the present paper was to test the validity of the nonlinear regression method for calculating the non-isothermal crystallization rate constant of the Nakamura's model of a rotational molding grade LLDPE directly from non-isothermal crystallization experiments carried out in a single cell DSC. Cooling rates of 50, 40, 30, 20, 10 and 5 oC/min we
Matéria (Rio J.). Publicado em: 2015-03
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26. Crossflow microfiltration of sugarcane juice: effects of processing conditions and juice quality
Sugarcane juice with passion fruit pulp was clarified using microfiltration under different T (temperature), P (pressure), and V (tangential velocity). The effects of these processing parameters were evaluated applying a rotational central composite experimental design (RCCD) and response surface methodology (RSM). The tests were performed at a filtration pi
Food Sci. Technol. Publicado em: 2014-03
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27. Production parameters and forage loss of oat and rye grass pastures managed with beef heifers fed diets with energy supplementation
Production parameters of intercropped pastures of oat and rye grass managed with beef heifers supplemented with brown rice meal and/or protected fat were evaluated. Twenty-eight Charolais × Nellore crossbred heifers at initial average age of 18 months and initial average live weight of 274.9 kg were utilized in the experiment. Animals were kept on oat + rye
R. Bras. Zootec.. Publicado em: 2012-08
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28. Impacto financeiro de 2010 a 2030 do envelhecimento dos beneficiários em operadoras de plano de saúde de Minas Gerais:: um estudo de caso
The portfolio aging of individual health plans, combined with epidemiological changes and the regulatory legislation of the National Health Insurance, is a challenge to be faced by the health insurance market. The aim of this dissertation is to analyze what the financial impact over the next 20 years for health insurance carriers would be, if prices do not c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011
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29. Efeito da aclimatação a altas temperaturas em suínos selecionados para consumo residual / Effect of acclimation to high ambient temperature of pigs selected for residual feed intake
Thirty-six Large White castrate males belonging to two divergent lines in residual feed intake, with average initial body weight of 50.5 0.9 kg and approximately 92 days of age, were used to evaluate the effects of acclimation to high temperature on the performance, thermoregulatory responses and blood parameters of pigs divergently selected for low and high
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/07/2011
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30. Estudo do desgaste e atrito em ensaios micro-abrasivos por esfera rotativa fixa em condições de força normal constante e pressão constante. / Wear and friction study in micro-abrasive wear testing by rotative fixed ball under conditions of constant normal force and constant pressure.
The micro-scale abrasive wear test by rotative ball has gained large acceptance in universities and research centers, being widely used in studies on the abrasive wear of materials. Two wear modes are usually observed in this type of test: rolling abrasion results when the abrasive particles roll on the surface of the tested specimen, while grooving abrasion
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/06/2011
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31. Resposta do arroz de terras altas a diferentes doses de carvão vegetal: desenvolvimento da planta e deficiência hídrica / Resposta do arroz de terras altas a diferentes doses de carvão vegetal: desenvolvimento da planta e deficiência hídrica / Response of upland rice to different doses of charcoal, plant development and water deficit / Response of upland rice to different doses of charcoal, plant development and water deficit
The average national rice yield was 11,3 million tones, with a harvested area of about 2,7 million hectares (IBGE 2010). Part of this comes from upland production systems in savannas that have high acidity, low fertility, with low phosphorus and potassium levels, low cation exchange capacity and high aluminum saturation. Upland rice in the Brazilian savannas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/02/2011
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32. Uma proposta para o ensino de noções de Cálculo no Ensino Médio
Este trabalho pretende discutir uma proposta de inclusão do ensino de noções de Cálculo Diferencial no Ensino Médio. Também comento a inclusão do ensino de Cálculo no currículo escolar e como é abordado atualmente em alguns livros didáticos adotados no ensino médio. A seguir, são apresentadas duas propostas de atividades que envolvem a introduç
Publicado em: 2011
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33. Concentração de triptofano e variáveis cinemáticas a diferentes percentuais da velocidade crítica no nado crawl
The aim of this study was to investigate the changes in plasma tryptophan concentration ([TRP]) and kinematic variables in a series of interval training in different percentages of the critical speed (CS) in front crawl. Volunteers were 14 competitive male swimmers with at least four years experience in this style and swimming 48 ± 11 km per week. The subje
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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34. Ensaios sobre o custo marginal do financiamento público no Brasil
The main theme of the three essays of this dissertation is the Marginal Cost of Public Funds (MCF) in Brazil. The analysis of MCF is of great importance in economics, since it can provide a measure of the marginal welfare loss incurred by the households resulting from high marginal taxes. In our first paper we estimate the MCF associated with major existing
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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35. Efeitos agudos do fumo sobre a hemodinâmica da circulação feto-materno-placentária / Acute effects of maternal smoking on fetal-placental- maternal system hemodynamics
Objective - To study acute hemodynamic alterations in the fetal-placental maternal system immediately after maternal exposure to nicotine. Methods - This is a noncontrolled experimental study involving 21 pregnant smoking women, randomly selected, with uncomplicated pregnancies and without risk factors for fetal heart disease. Patients underwent ultrasound a
Publicado em: 2010
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36. Exercício de baixa intensidade na Insuficiência Cardíaca Grave: segurança, respostas agudas e seguimento em médio prazo. / Low-intensity exercise in severe heart failure: safety, the acute responses and medium term follow-up.
Objectives: To study the cardiovascular behavior and safety during protocol of lowintensity exercise in patients with severe heart failure (HF), awaiting heart transplantation. Methods: We studied 21 patients with severe HF the list for a heart transplant at the University Hospital of UNIFESP. After evaluation, patients underwent exercise protocol with six s
Publicado em: 2010