Heat Release Analysis
Mostrando 1-12 de 62 artigos, teses e dissertações.
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1. Verification of the reaction to fire of water-based and oil-based enamel paints used as finish of walls in residential buildings
ABSTRACT Among that materials whose behavior facing fire has not yet been understood thoroughly lie paints used as finish of interior and exterior walls of buildings. This study aimed to analyses the reaction to fire of enamel paints exposed to elevated temperatures, so two paints were tested: one water-based and one oil-based, both applied over a white unde
Matéria (Rio J.). Publicado em: 25/11/2019
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2. Influência do uso de cinza volante na elevação adiabática de temperatura e resistência à compressão de concretos
RESUMO A construção de grandes edifícios tem requerido a execução de blocos de fundação de grandes dimensões, com volumes que chegam a milhares de m3 de concreto. Em geral, estas estruturas são executadas em concretos autoadensáveis e/ou de altas resistências, resultando em elevados consumos de aglomerante. Nesses casos, o emprego de cinza volante
Matéria (Rio J.). Publicado em: 10/06/2019
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3. Composite-derived monomers affect cell viability and cytokine expression in human leukocytes stimulated with Porphyromonas gingivalis
Abstract Objectives: Dental composites release unreacted resin monomers into the oral environment, even after polymerization. Periodontal cells are, therefore, exposed to substances that potentially elicit the immune inflammatory response. The underlying molecular mechanisms associated with the interaction between resin monomers and human immune cells found
J. Appl. Oral Sci.. Publicado em: 03/06/2019
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4. Complexation and enhancement of temozolomide solubility with cyclodextrins
ABSTRACT Temozolomide is a poorly soluble anti-cancer drug used in the treatment of some brain cancers. Following literature reports about the enhancement of solubility and stability for these kinds of drugs upon complexation with cyclodextrins, we aimed to form an inclusion complex between temozolomide and the different types of cyclodextrins (CDs) to enhan
Braz. J. Pharm. Sci.. Publicado em: 26/07/2018
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5. Oxide Formation on NiTi Surface: Influence of the Heat Treatment Time to Achieve the Shape Memory
AbstractSeveral studies regarding superficial treatments of Nitinol (NiTi) shape-memory have been developed aiming to the improve corrosion resistance and to block the Ni release to adjacent tissues. The necessary heat treatment to achieve the shape memory effect normally occurs at temperatures between 500 and 600 °C. However, titanium oxide (TiO2) is forme
Mat. Res.. Publicado em: 2015-10
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6. Nickel-based Catalyst Precursor Prepared Via Microwave-induced Combustion Method: Thermodynamics of Synthesis and Performance in Dry Reforming of CH4
Nickel-based catalyst precursor for dry reforming of methane was successfully prepared by a self-combustion method. Three different amino acids: urea, glycine and citric acid were tested as fuels in the redox reaction with metal nitrates. For each fuel, a thermodynamic modeling of the combustion reaction was performed. The samples were characterized by X-ray
Mat. Res.. Publicado em: 25/08/2015
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7. Bagaço do sorgo: estimativa de parâmetros cinéticos e pirólise analítica
Pyrolysis is currently the one of the most important technologies for transforming biomass into more useful products to society. Aiming to deepen the knowledge of the kinetics of pyrolysis, this study conducted an exploratory study of the decomposition of sorghum bagasse by thermogravimetry analysis (TG). The physicochemical characterization of sorghum bagas
Publicado em: 2011
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8. Desenvolvimento e análise de uma fornalha para aquecimento direto e indireto de ar utilizando biomassa polidispersa / Development and analysis of a furnace for both direct- and indirect air heating by using polydispersive biomass
A heat-generation system with option to direct or indirect heating of the air, that could be used in drying agricultural products or heating zootechnical facilities was developed and evaluated. The developed furnace has a heat changer with concentric countercurrent-flux tube, and it was fed polydispersive biomass by pneumatic transport or manually with bioma
Publicado em: 2007
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9. Analysis of diesel engine operation with biodiesel blends / Analise da operação de motores diesel com misturas parciais de biodiesel
As conseqüências da adição de biodiesel ao óleo diesel foram estudadas estabelecendo-se relações de causa e efeito entre o desempenho do motor e os processos de combustão e formação de mistura. Foram incluídos, nesta discussão, aspectos como emissões poluentes, formação de mistura, dinâmica do processo de combustão, eficiência de conversão
Publicado em: 2006
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10. Dispersion of dense gas / Dispersão de gases densos na atmosfera
This work describes significant alterations in the computer code, DENZ, which is applied to the study of the consequences of accidentally releasing large quantities of heavy, i.e. havier than air, toxic or flammable gases to the atmosphere. lt also contains a discussion of the reasons why the study of such substances is necessary and describes the characteri
Publicado em: 2004
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11. The influence of the Pacific and Atlantic ssts in the South America monsoon rainfall / A influência das TSMS dos ocenos Pacíficos e Atlântico nas chuvas de monção da América do Sul
Monthly information of outgoing long wave radiation (OLR), sea surface temperature (SST), and rainfall from 22 meteorological stations in eastern South America were used to identify the rainfall characteristics of the South American Monsoon systems (SAMS). The 1961-1999 rainfall climatology for the area allowed the identification of two seasons with marked p
Publicado em: 2000
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12. Avaliação do efeito do polimento quimico sobre algumas propriedades fisico quimicas das resinas acrilicas ativadas quimica e termicamente
Although chemical polishing of dental acrylic resins have became a very used alternative, very litlle is known about tt:1e effect on the properties of acrylic resin. This study evaluated the effect of this polishing on the residual monomer release in the water, microhardness, transverse resistence and surface texture of heat and a could curing resins, compar
Publicado em: 1999