Gravimetric Composition
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. Biomassa de espécies florestais para produção de carvão vegetal
Resumo Devido à alta demanda das empresas por geração de energia oriunda de fontes renováveis, o objetivo deste estudo foi analisar as propriedades da madeira e do carvão proveniente de três espécies florestais: Ceiba pentandra (L.) Gaertn. (Sumaúma), Guatteria sp. (Envirão) e Brosimum sp. (Mumuré). O material foi coletado na Empresa Rosa Madeireir
Ciênc. Florest.. Publicado em: 02/12/2019
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2. CHEMICAL AND ENERGETIC CHARACTERIZATION OF Eucalyptus grandis × Eucalyptus urophylla CLONES SUBJECT TO WIND DAMAGE
RESUMO Danos por ventos são frequentes em plantações florestais, e a utilização desta madeira pode minimizar os prejuízos causados. O objetivo foi avaliar a composição química e o potencial energético da madeira e carvão de árvores sujeitas a danos pelos ventos. Oito clones de Eucalyptus grandis × Eucalyptus urophylla com idade de dois anos fora
Rev. Árvore. Publicado em: 28/11/2019
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3. Análise estatística da caracterização gravimétrica de resíduos sólidos domiciliares: estudo de caso do município de Juiz de Fora, Minas Gerais
RESUMO Parte dos resíduos coletados nos municípios brasileiros ainda são destinados de forma inadequada, resultando em transtornos à qualidade de vida e à saúde pública. Assim, a caracterização gravimétrica dos resíduos é um importante instrumento de gestão integrada, uma vez que permite conhecer quantitativamente as frações geradas. Nesse sen
Eng. Sanit. Ambient.. Publicado em: 30/05/2019
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4. Chemical characterization and bioactive compounds of an unconventional vegetable - Erechtites valerianifolia (Wolf) DC.
Abstract Erechtites valerianifolia (Wolf) DC is an unconventional vegetable found in the Brazilian Atlantic Forest. Is consumed in high proportions by the population living in this biome. The objective of this study was to investigate the general chemical composition, occurrence and content of carotenoids, vitamins (C and E) and minerals in this vegetable. B
Food Sci. Technol. Publicado em: 27/05/2019
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5. Biology of non-native species (Rhaphiodon vulpinus Agassiz, 1829) (Characiformes, Cynodontidae) in a cage fish farm area, Upper Paraná River Basin, Brazil
Resumo Objetivo Verificar os aspectos alimentares, populacionais e parasitológicos da espécie de peixe silvestre não-nativa Rhaphiodon vulpinus em área sob influência de uma piscicultura em tanques-redes, no reservatório de Ilha Solteira, São Paulo. Métodos Cinquenta e um exemplares de R. vulpinus foram capturados entre setembro de 2014 e agosto
Acta Limnol. Bras.. Publicado em: 18/02/2019
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6. Water sorption isotherms of cooked hams as affected by temperature and chemical composition
Abstract This study was focused on the determination of the chemical composition and experimentally obtaining the sorption isotherms for four samples of commercial cooked ham subjected to simulated commercial storage conditions. The isotherms were determined using the gravimetric method. The mathematical models of Guggenhein, Anderson and de Boer; Brunauer,
Food Sci. Technol. Publicado em: 13/12/2018
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7. Buriti of the cerrado of Minas Gerais, Brazil: physical and chemical characterization and content of carotenoids and vitamins
Abstract The fruit species of the Brazilian Cerrado, such as buriti (Mauritia vinifera ), occupy a prominent position in the ecosystem since they contribute to the economic potential of the region and have high nutritional value. We aimed to evaluate the physical characteristics, chemical composition and content of vitamin C, carotenoids, vitamin E and fola
Food Sci. Technol. Publicado em: 30/07/2018
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8. Estudio de la composición de una fase gaseosa por FTIR. Cloración de MoO3 en presencia de carbón de fructosa
ABSTRACT Chlorination and carbochlorination studies available in the literature were conducted using gravimetric and thermogravimetric techniques. These studies were focused on the overall reaction through analysis of the condensed reaction products, thermodynamic calculations and mass change generated during the reaction. The composition of the gaseous phas
Matéria (Rio J.). Publicado em: 19/07/2018
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9. Determination of sulfate in the wet-process of phosphoric acid by reverse flow injection
An improved method based on reverse flow injection is proposed for determining sulfate concentration in the wet-process of phosphoric acid (WPA). The effect of reagent composition, flow rate, temperature, acid concentration, length of the reaction coil, and linear response range on the flow system is discussed in detail. Optimal conditions are established fo
Quím. Nova. Publicado em: 2014
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10. Preparation and characterization of PbTi0(3) ceramics modified by a natural mixture of rare earth oxides of xenotime
Lead titanate ceramics modified by xenotime (Xm) with nominal composition (Pb, Xm)TiO3, Xm 10 or 15 mol %, were prepared by the conventional oxide mixture technique. Xenotime is a natural mineral consisting of a mixture of rare earth oxides. Thermal, structural and electric properties were investigated through differential and gravimetric thermal analysis, X
Mat. Res.. Publicado em: 23/08/2013
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11. Formation reaction of Mg2FeH6: effect of hydrogen absorption/desorption kinetics
In this paper we address some aspects of the kinetics of hydrogen absorption and desorption of Mg2FeH6 nanocomposite powder. The Mg2FeH6 material was prepared from a 2Mg-Fe composition by reactive milling under H2 pressure at room temperature. After mechano-chemical processing, the material was mainly constituted of Mg2FeH6 having a hydrogen gravimetric capa
Mat. Res.. Publicado em: 29/07/2013
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12. Subsídios para implantação do processo de compostagem em município de pequeno porte : estudo de caso em Corumbataí-SP / Subsidies for the implementation of the composting process in a small municipality. Case study: Corumbataí-SP
University of São Carlos, 2012. Composting is one of the oldest processes of recycling organic waste. Despite being an environmentally appropriate treatment, their use is still little known regarding the management of municipal solid waste (MSW). This study aimed to investigate the management of MSW in Corumbataí - SP. For this purpose gravimetric characte
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/08/2012