Physical Processes
Mostrando 1-12 de 894 artigos, teses e dissertações.
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1. Characterization of micaceous minerals occurring in phosphate ores in Brazil: emphasis on the interstratified phyllosilicates
Abstract Micaceous minerals were characterized in three phosphatic ores from mines in Western Minas Gerais State, Brazil, all having complex chemical and mineralogical compositions, with emphasis on interstratified phyllosilicates. Knowledge of the relationship between the physical and chemical characteristics of the phyllosilicates contributed to a better u
REM - International Engineering Journal. Publicado em: 2022
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2. Diesel-Like Biofuels Production Using Fatty Waste
According to the waste-to-energy (WTE) valorization and circular economy principles, the use of waste oil and grease (WOG) for obtaining biofuels shows the tendency towards sustainability, makes the interest in green chemistry, and the development of environmentally friendly processes grow. Three different fatty wastes (from the fat trap of a sewage station,
Journal of the Brazilian Chemical Society. Publicado em: 2022
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3. PROPRIEDADES DE PROTEÇÃO TÉRMICA DO CARBETO DE SILÍCIO EM REVESTIMENTOS CERÂMICOS
In recent years, research on the development of protective materials has expanded significantly in order to find efficient and economically viable solutions for application in various industrial segments. Among these materials, those aimed at protecting metallic substrates against high temperatures that end up causing corrosive processes, stand out due to th
Quím. Nova. Publicado em: 2021-01
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4. ASPECTOS ESTRUTURAIS DE ESFERAS DE QUITOSANA/PVA RETICULADAS COM GLUTARALDEÍDO SUBMETIDAS A DIFERENTES TRATAMENTOS TÉRMICOS
Chitosan is a biopolymer derived from chitin and the most abundant polysaccharide in nature after cellulose. This biopolymer has been applied in different areas due its biodegradability and biocompatibility properties. Modifications of chitosan structure by cross-linking chemical agents can alter its physical, chemical, and morphological characteristics. The
Quím. Nova. Publicado em: 2020-09
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5. Seed quality of 22 quinoa materials (Chenopodium quinoa Willd.) from the department of Boyacá
ABSTRACT Chenopodium quinoa Willd. is a pseudocereal with seeds that are a rich source of vitamins and minerals. However, there are few studies on quinoa seed quality, especially for the Colombian germplasm. So, the objective of this research was to determine the quality of 22 quinoa materials from the Department of Boyacá by evaluating the physical (color,
Rev. Ceres. Publicado em: 2020-08
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6. Physical and chemical characterization of sewage sludge with different proportions of diatomaceous earth
ABSTRACT The use of residues for agricultural production is an alternative for the achievement of sustainability. When mixed with diatomaceous earth (DE) from biofuel filtration, sewage sludge (SS) plays an important role as soil conditioning agent. As a result, the objective of this work was to make a DE vermicompost at different proportions: 0; 7.53; 15.06
Rev. Ceres. Publicado em: 2020-02
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7. Brazilian version of the Self-Estimated Functional Inability because of Pain questionnaire for musculoskeletal injuries relating to dance and sport: translation and cross-cultural adaptation
ABSTRACT BACKGROUND: Self-Estimated Functional Inability because of Pain (SEFIP) is a questionnaire specifically designed to measure musculoskeletal pain or discomfort. OBJECTIVE: To perform translation and cross-cultural adaptation of the SEFIP for dancers (SEFIP-dance), for use in Brazilian Portuguese. In addition, as a secondary objective, we adapted
Sao Paulo Med. J.. Publicado em: 2020-02
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8. Processos Psicossociais da Aquisição de uma Deficiência
Resumo A aquisição de uma deficiência pode ter extenso impacto na vida de uma pessoa, pois ocorre, muitas vezes, sob condições traumáticas e obriga tanto a ressignificações subjetivas quanto a adaptações práticas no cotidiano. O principal objetivo do trabalho aqui descrito consistiu em compreender aspectos psicossociais do processo de aquisição
Psicol. cienc. prof.. Publicado em: 20/12/2019
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9. AVALIAÇÃO DE DIFERENTES CULTURAS STARTERS NA ELABORAÇÃO DE SALAME TIPO ITALIANO
Resumo O Salame Tipo Italiano produzido no Brasil é predominantemente obtido de carne suína, com maturação aproximada de 30 dias, atingindo pH em torno de 5,4. O uso das bactérias do gênero Lactobacillus como culturas iniciadoras propicia o processo de fermentação e a obtenção de produtos uniformes e seguros, com redução do tempo de maturação d
Ciênc. anim. bras.. Publicado em: 13/12/2019
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10. Cidadania, corpo e punição: expansão e violação de direitos civis de adolescentes internados na antiga Febem/SP
Resumo Este artigo discute a garantia de direitos civis e a proteção contra agressões físicas para adolescentes em cumprimento de medida de internação. A relação entre direitos civis e proteção do corpo dos adolescentes é aqui entendida a partir do conceito de cidadania disjuntiva e da noção de corpo incircunscrito, que remetem aos processos con
Soc. estado.. Publicado em: 09/12/2019
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11. DENSITY CALCULATIONS OF AQUEOUS AMINE SOLUTIONS USING AN EXCESS GIBBS BASED MODEL
Abstract Accurate representation of the physical properties of a solvent is essential for design and simulation of processes. Density and viscosity, for instance, have an important role in modelling and designing absorption and desorption towers. In the present work, a model to accurately calculate the density of aqueous amine solutions used in CO2 capture w
Braz. J. Chem. Eng.. Publicado em: 09/12/2019
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12. SISTEMAS PEDOGEOMORFOLÓGICOS NA INTERPRETAÇÃO DA EVOLUÇÃO DE PAISAGENS QUATERNÁRIAS EM CLIMAS TROPICAIS ÚMIDOS
Resumo As relações entre solo e relevo são constantes em paisagens de climas tropicais e subtropicais úmidos, devido aos espessos mantos regolíticos resultantes de acelerado intemperismo físico, químico e biológico. A investigação dos sistemas pedogeomorfológicos merece destaque em análises sistêmicas, que objetivam o estudo da gênese e dos pro
Mercator (Fortaleza). Publicado em: 09/12/2019