Exponential Function
Mostrando 1-12 de 496 artigos, teses e dissertações.
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1. ESTIMATION OF WOOD TOUGHNESS IN BRAZILIAN TROPICAL TREE SPECIES
ABSTRACT Wood has been used for several purposes such as in civil and rural construction. Knowing wood mechanical behavior under short-term loading is essential for safer structural designs. However, wood toughness is a mechanical property little investigated for this purpose. Thus, this study aimed to evaluate, using exponential and polynomial regression mo
Eng. Agríc.. Publicado em: 2020-04
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2. The effect of encapsulants on the heat of sorption in vacuum-dried cajá powder
RESUMO Dados de umidade de equilíbrio do pó da poupa de cajá (PC) (Spondias mombin, L.) com e sem aditivos - 58% de maltodextrina (MD) ou 58% de goma arábica (GA) - foram determinadas em 20; 30; 40 e 50 °C, utilizando o método gravimétrico estática numa faixa de atividade de água de 0,06 a 0,90. As isotermas obtidas foram sigmóide, típica tipo III
Rev. Ciênc. Agron.. Publicado em: 04/11/2019
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3. A GENERALIZED ABOVEGROUND BIOMASS MODEL FOR JUVENILE INDIVIDUALS OF Rhododendron arboreum (SM.) IN NEPAL
ABSTRACT Carbon in the juvenile plants contribute significant share to the total carbon stock in forests. A precise estimate of aboveground biomass of the juvenile stages of trees is therefore very important. We developed a generalized allometric biomass model for the prediction of aboveground biomass of the juvenile individuals of Rhododendron arboreum (Sm.
CERNE. Publicado em: 09/09/2019
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4. Use of sweet ‘Pêra’ peel as an adsorbent in the treatment of textile effluents
RESUMO O lançamento de águas residuárias industriais em corpos aquáticos, sem o devido tratamento, pode causar danos severos ao meio ambiente e à saúde humana. O objetivo deste estudo foi realizar a secagem da casca de laranja cultivar Pêra (Citrus sinensis L. Osbeck) e avaliar a viabilidade do seu uso como biossorvente para remoção de um corante di
Rev. bras. eng. agríc. ambient.. Publicado em: 12/08/2019
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5. A new class of lifetime models and the evaluation of the confidence intervals by double percentile bootstrap
Abstract: In this paper, we introduce a new three-parameter distribution by compounding the Nadarajah-Haghighi and geometric distributions, which can be interpreted as a truncated Marshall-Olkin extended Weibull. The compounding procedure is based on the work by Marshall and Olkin 1997. We prove that the new distribution can be obtained as a compound model w
An. Acad. Bras. Ciênc.. Publicado em: 08/04/2019
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6. Influence of the Micromechanics Models and Volume Fraction Distribution on the Overall Behavior of SiC/Al Functionally Graded Pressurized Cylinders
Abstract The assessment of the differences in results obtained from various micromechanics homogenization schemes, as well as the implications of assuming different volume fraction profiles was carried out in the present work. The functionally graded composite chosen for the analysis was Al-SiC and comparisons were made in terms of stress and strain distribu
Lat. Am. j. solids struct.. Publicado em: 08/04/2019
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7. The Impact of Private Equity and Venture Capital Funds on post-IPO Operational and Financial Performance in Brazilian invested companies
RESUMO O presente artigo buscou analisar o legado e sua persistência ao longo do tempo, em termos de políticas de financiamento e performances operacional e financeira, de empresas investidas por fundos de Private Equity e Venture Capital (PE/VC). A indústria de PE/VC é caracterizada pela função de identificar empresas com grandes potenciais de retorno
BBR, Braz. Bus. Rev.. Publicado em: 2019-02
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8. Actos de disenso como urbanismo democratizador: el espacio político en Santiago de Chile
Resumo Este artigo procura avançar na teorização de um urbanismo da dissidência. Confrontado com o descrédito experimentado pela democracia representativa, os cidadãos escolheram a rua e marcha como um meio para expressar a raiva. Esse fenômeno está aumentando e a cidade torna-se, então, um som que produz desconforto público. Usando o ambiente urb
urbe, Rev. Bras. Gest. Urbana. Publicado em: 21/01/2019
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9. Dificultades conceptuales y matemáticas del modelo convencional de oscilaciones amortiguadas
Abstract A mathematical study on the subject of damped oscillations is expounded, focused on the computation of the constants of the equation of movement, their mathematical meaning and their implications on the behavior of systems. Examples are given of the initial value method for computing the constants, both for free and damped oscillations. Algebraic ex
Rev. Bras. Ensino Fís.. Publicado em: 06/12/2018
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10. The interaction of a naturally occurring membranous collagen with high-saline dye solutions – mechanistic features from unusual multi-step biosorption
ABSTRACT It is known that wastewaters containing dyes are very difficult to treat, since many dyes are stable and recalcitrant molecules. In this way, sorption may suitable for effectively remove dyes in this specific application field. In this work, a first approach for using polymeric membranous collagen of fish scales for sorption of saline methylene blue
Matéria (Rio J.). Publicado em: 06/12/2018
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11. Minimization of polymerization shrinkage effects on composite resins by the control of irradiance during the photoactivation process
Abstract High levels of shrinkage stress caused by volumetric variations during the activation process are one of the main problems in the practical application of composite resins. Objective The aim of this study is to reduce the shrinkage stress and minimize the effects caused by composite resin volumetric variation due to the photopolymerization. In thi
J. Appl. Oral Sci.. Publicado em: 18/06/2018
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12. Structural, Thermal, Optical, and Photoacoustic Study of Mechanically Alloyed Nanocrystalline SnTe
A nanostructured SnTe phase was produced by mechanical alloying after 2 h of milling. Part of the as-milled powder was annealed and its X-ray diffraction (XRD) pattern was recorded. The XRD patterns of the as-milled and annealed samples were refined using the Rietveld method. After annealing, partial decomposition of the SnTe phase was observed and corrobora
Mat. Res.. Publicado em: 07/06/2018