Differential Evolution
Mostrando 25-36 de 307 artigos, teses e dissertações.
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25. Pruritic folliculitis of pregnancy
Abstract Pruritic folliculitis of pregnancy is a rare disease of unknown etiology. It occcurs primarily during pregnancy, usually with spontaneous resolution postpartum. It is characterized by a benign dermatosis, with papular and pustular follicular lesions that first appear on the torso and occasionally spread throughout the body. We report the case of a p
An. Bras. Dermatol.. Publicado em: 2016-10
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26. CHOOSING THE OPTIMAL GEL MORPHOLOGY IN ELECTROPHORESIS SEPARATION BY A DIFFERENTIAL EVOLUTION APPROACH (DEA)
Abstract This paper introduces an effective optimization approach to investigate the morphological effects of nanocomposite gel electrophoresis and operational parameters (see below) by integrating the numerical simulations based on finite element method and population-based search algorithm such as differential evolution. Simulations are performed to study
Braz. J. Chem. Eng.. Publicado em: 2016-03
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27. A STUDY OF PYROLYSIS OF MACADAMIA NUT SHELL: PARAMETRIC SENSITIVITY ANALYSIS OF THE IPR MODEL
Abstract The macadamia tree is known for producing fruit high in fats, enclosed in very hard woody shells. Macadamia nut shell, considered as a by-product from macadamia nut processing, may be a suitable option for pyrolysis. These residues are constituted of cellulose, hemicellulose, lignin and extractives. The Independent Parallel Reaction (IPR) Model has
Braz. J. Chem. Eng.. Publicado em: 2016-03
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28. Evolution of Complex Phases in Al-Fe-Si Systems
Phase transformations and composition of Al-Fe-Si, Al-Co-Si and Al-Ni-Si based rapidly quenched ribbons have been investigated. Different Al-Si based alloys with varying Si content and additions of third metallic element, namely Al80Si20, Al60Si40, Al75Fe5Si20, Al70Fe10Si20, Al75Co5Si20, Al70Co10Si20, Al75Ni5Si20, Al70Ni10Si20 were analyzed. Variation of pha
Mat. Res.. Publicado em: 17/11/2015
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29. INFLUÊNCIA DO CATALISADOR EM SOLUÇÕES POLIMÉRICAS PARA O PREPARO DE GÉIS ORGÂNICOS DE RESORCINOL-FORMALDEÍDO
Resorcinol-formaldehyde (RF) organic gels have been extensively used to produce carbon aerogels. The organic gel synthesis parameters greatly affect the structure of the resulting aerogel. In this study, the influence of the catalyst quantity on the polymeric solution sol-gel process was investigated. Sodium carbonate was used as a basic catalyst. RF gels we
Quím. Nova. Publicado em: 2015-11
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30. Insights into the dynamics of hind leg development in honey bee (Apis mellifera L.) queen and worker larvae - A morphology/differential gene expression analysis
Phenotypic plasticity is a hallmark of the caste systems of social insects, expressed in their life history and morphological traits. These are best studied in bees. In their co-evolution with angiosperm plants, the females of corbiculate bees have acquired a specialized structure on their hind legs for collecting pollen. In the highly eusocial bees (Apini a
Genet. Mol. Biol.. Publicado em: 21/08/2015
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31. Polytetrafluorethylene Membrane-Based Liquid Three-Phase Micro Extraction Combined with
in situ Differential Pulse Anodic Stripping Voltammetry for the Determination of Cadmium Ions Using Au-Nanoparticles Sol-Gel Modified Pt-WireIn this study, one particular application of in situ pulse anodic stripping voltammetry and polytetrafluoroethylene membrane-based liquid three-phase micro extraction is presented for the micro extraction and quantification of cadmium(II) ions in trace levels. The main factors influencing on preconcentration and micro extraction of cadmium ions
J. Braz. Chem. Soc.. Publicado em: 2015-07
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32. Paracoccidioidomycosis in southern Rio Grande do Sul: a retrospective study of histopathologically diagnosed cases
Paracoccidioidomycosis (PCM) is a systemic mycosis caused by the fungus Paracoccidioides brasiliensis and is endemic to Brazil. The aim of this study was to perform a retrospective analysis of the PCM cases in the countryside south of Rio Grande do Sul, Brazil. The files from four histopathology laboratories located in the city of Pelotas were obtained, and
Braz. J. Microbiol.. Publicado em: 2014
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33. Enhanced lipase recovery through RSM integrated differential evolutionary approach from the fermented biomass
The aim of this work was to apply a modeling integrated optimisation approach for a complex, highly nonlinear system for an extracellular lipase extraction process. The model was developed using mutation, crossover and selection variables of Differential Evolution (DE) based on central composite design of Response Surface Methodology. The experimentally vali
Braz. arch. biol. technol.. Publicado em: 2013-10
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34. Sinterability and microstructure evolution during sintering of ferrous powder mixtures
The present work is focused on ferrous powder metallurgy and presents some results of a development of a suitable masteralloy for use as an additive to iron powder for the production of sintered steels. The masteralloy was produced by melting a powder mixture containing approximately Fe + 20% Ni + 20% Mn + 20% Si + 1% C (wt%), in order to obtain a cast bille
Mat. Res.. Publicado em: 28/05/2013
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35. Tumor raro em mediastino: hamartoma
In the present paper we report a case of mediastinal tumor which we believe has never been reported. Since surgical treatment, the patient presented good evolution. We discuss the presentation, differential diagnosis and therapy. Finally, we stress the importance of the pathologic findings.
Rev. Col. Bras. Cir.. Publicado em: 2013-04
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36. Otimização da separação sólido-líquido em hidrociclones mediante modificações geométricas
Because of advantages such as low cost, simple structure, large capacity of suspension processing and small dimensions, hydrocyclones are widely used for separating dispersed phase (liquid or solids) from continuous one. The shape and size of a hydrocyclone has a decisive effect on the internal flow structure of the continuous phase, and therefore, the separ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/11/2012