Atmospheres
Mostrando 1-12 de 270 artigos, teses e dissertações.
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1. Fatty acid profile and physicochemical, optical and thermal characteristics of Campomanesia adamantium (Cambess.) O. Berg seed oil
Abstract The aim of this study was to characterize the oil obtained from seeds of Campomanesia adamantium by physicochemical quality parameters, oxidative stability, antioxidant activity, quality indexes, optical and thermal stability and its fatty acid profile. These seeds were a relevant source of oil (83 mg g-1) with high potential antioxidant activity (I
Food Sci. Technol. Publicado em: 2020-12
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2. Avaliação de desvio dimensional em Inconel 718 após a retificação em diferentes técnicas de lubri-refrigeração
RESUMO O Inconel 718 é uma liga à base de níquel que possui elevada resistência à fadiga e à fluência, ductilidade, rigidez, inércia química e capacidade de operar em elevadas temperaturas, por isto é bastante utilizada na fabricação de peças aeronáuticas de alto rendimento. Estas peças exigem tolerâncias dimensionais e geométricas estreitas
Matéria (Rio J.). Publicado em: 25/11/2019
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3. PREPARATION AND CHARACTERIZATION OF CARBON FROM THE FRUIT OF BRAZIL NUT TREE ACTIVATED BY PHYSICAL PROCESS
RESUMO Carvão ativado é o nome de um grande grupo de materiais que apresentam alto grau de porosidade e, consequentemente, extensa área superficial interna, com propriedades adsortivas de caráter físico e químico. Inúmeros materiais podem ser utilizados como precursores, especialmente biomassa. O objetivo deste trabalho foi obter carvão ativado a par
Rev. Árvore. Publicado em: 14/11/2019
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4. Quality and functional properties of ‘Tupy’ blackberry stored in modified atmosphere conditions
Resumo O objetivo deste trabalho foi avaliar o efeito da temperatura de armazenamento, em atmosfera modificada (AM) passiva, e da composição atmosférica em AM ativa sobre a manutenção da qualidade, do teor de compostos fenólicos totais (CFT) e da atividade antioxidante total (AAT; métodos DPPH e ABTS) de amoras-preta ‘Tupy’. Foram conduzidos dois
Rev. Bras. Frutic.. Publicado em: 24/01/2019
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5. Credibility, audacity and joy: Brand personalities that connect users to social media
Abstract The main purpose of this article is to evaluate the influence brand personality has on customer loyalty in the context of social networks as brands. We conducted a survey of 268 social networks users in Brazil and analyzed data through Structural Equation Modeling. As a result, brand personality dimensions Credibility, Audacity and Joy were found to
BAR, Braz. Adm. Rev.. Publicado em: 21/01/2019
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6. La afectividad docente: narrativa sentimental, trabajo emocional y atmósferas afectivas en la labor de los maestros en Argentina (1920-1940)
Resumo: Este artigo forma parte de uma investigação que tem como objetivo estudar a configuração da afetividade nos professores do ensino primário na Argentina (1870-1970). Centrando-se no período de 1920-1940, são escolhidos alguns conceitos - amor romântico, trabalho emocional e atmosferas afetivas -, para estabelecer um dialogo com o corpus seleci
Rev. Bras. Hist. Educ.. Publicado em: 14/01/2019
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7. Thermal Behavior of Pyrite in the CO2 and N2 Atmosphere for Obtaining Pyrrhotite: A Magnetic Material
In the southern of Brazil the coal is composed of a large amount of pyrite (FeS2), an environmental problem for this region because the pyrite turns a waste. This work investigated the behavior of pyrite in CO2 and N2 atmospheres, aiming to identify better thermal treatment conditions of the pyrite waste that favor obtaining a material with magnetic properti
Mat. Res.. Publicado em: 18/10/2018
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8. Behaviour of cementitious matrices subjected to the combined action of chloride ions and carbonation
ABSTRACT Carbonation and chloride action are the two leading causes of degradation in reinforced concrete structures. Despite the combined action of these two mechanisms being a reality, there is little research on the effect of this combination in cementitious matrices. Furthermore, the incorporation of fly ash in cementitious matrices has been frequently u
Matéria (Rio J.). Publicado em: 18/10/2018
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9. Non-isothermal decomposition kinetics of conductive polyaniline and its derivatives
Abstract The non-isothermal decomposition kinetics of conductive polyaniline (PANI) and its derivatives, poly(o-methoxyaniline) (POMA) and poly(o-ethoxyaniline) (POEA), was investigated by thermogravimetric analysis (TGA), under inert and oxidative atmospheres, using Flynn-Wall-Ozawa’s approach to assess the kinetic parameters of the decomposition process
Polímeros. Publicado em: 21/09/2018
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10. Survival of Salmonella spp. in minced meat packaged under vacuum and modified atmosphere
Abstract The effect of different modified atmosphere packaging regimes on the behavior of Salmonella spp. on minced meat was studied. Minced meat was experimentally contaminated with a Salmonella spp. cocktail (S. Enteritidis, S. Typhimurium, S. Infantis and S. Arizonae), packaged under vacuum or modified atmosphere with initial headspaces containing 20%O2/5
Braz. J. Microbiol.. Publicado em: 2018-09
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11. EVALUATION OF LIMESTONE IMPURITIES IN THE DESULFURIZATION PROCESS OF COAL COMBUSTION GAS
Abstract Limestones have been used to capture SO2 emitted during the combustion of coal for decades. However, due to the complexities of the variables involved in this process, many issues are still being studied. Some tests were performed in a fluidized bed reactor, which was used to evaluate the performance of the limestones in the bed for flue gas desulfu
Braz. J. Chem. Eng.. Publicado em: 2017-01
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12. The Effect of Atmosphere on Elemental Mercury Release During Thermal Treatment of Two Bituminous Coals
The dynamic release behavior of elemental Hg (Hg0) during thermal treatment of two bituminous coals was studied under N2, CO2 and air atmospheres. The results show that the profiles of Hg0 released present several peaks during thermal treatment of two bituminous coals. The Hg peak profiles for the same coal are different with the different atmosphere used. T
J. Braz. Chem. Soc.. Publicado em: 2016-12