Air Dissolution
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Effect of Multi-Pass Rolling on the Performance of AZ31 Magnesium Alloy Anode in Mg-Air Battery
In this work, the influence of rolling passes on microstructure, corrosion behavior, electrochemical performance, and battery performance of AZ31 magnesium alloy was studied. The experimental results show that the grain size decreases first and then increases with rolling passes. Among them, the grain size of three passes rolled sample is the smallest, while
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Unconstitutional limbo: why the Smithsonian Institution may violate the separation of powers doctrine
Resumo Com a abertura do Museu Nacional de História Afro-Americana, as pessoas estão novamente vindo em massa ao National Mall para ver a mais nova edição do Smithsonian. E quase todos americanos conhecem o Smithsonian - de modo que seu reconhecimento ultrapassa os 90% nas pesquisas públicas. Todos os anos, 30 milhões de pessoas visitam os museus Smith
Rev. Investig. Const.. Publicado em: 15/04/2019
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3. Estimativa do coeficiente de transferência de massa de oxigênio com o uso da técnica das sondas solúveis flutuantes: um estudo de laboratório
RESUMO A sonda solúvel flutuante (SSF) é considerada uma técnica de baixo custo para a estimativa do coeficiente de transferência de massa de oxigênio na interface ar-água (KL). Essa técnica se baseia no fato que KL pode ser correlacionado com a velocidade de dissolução do sólido solúvel (VS), uma vez que ambos os parâmetros são influenciados pe
Eng. Sanit. Ambient.. Publicado em: 21/03/2019
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4. Electrochemical corrosion characterization of nickel aluminides in acid rain
ABSTRACT Nickel aluminides have been extensively studied in recent decades to replace superalloys, in some components of aircraft turbines, because they have excellent corrosion resistance. Many industrial cities have the problem of air pollution, which has forced the study of the degradation of these alloys in the presence of acid rain. The aim of this work
Matéria (Rio J.). Publicado em: 19/07/2018
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5. Effect of dissolution kinetics on flotation response of calcite with oleate
Abstract Phosphate flotation performance can be influenced by the dissolution kinetics of the minerals that compose the ore. The purpose of this work was to investigate the effect of dissolution kinetics on flotation response with oleate (collector) of calcites from different origins and genesis. The calcite samples were first purified and characterized by x
Braz. J. Chem. Eng.. Publicado em: 2017-10
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6. Pedogenic Iron Oxides in Iron-Rich Oxisols Developed from Mafic Rocks
ABSTRACT Despite the considerable amount of information on the mineralogical characteristics of pedogenic Fe oxides in Brazilian soils, there are few studies on Fe-rich soils developed from mafic rocks with taxonomic identities at lower categorical levels. This study evaluated the mineralogical characteristics of pedogenic Fe oxides in B horizons (Bw) of Fe-
Rev. Bras. Ciênc. Solo. Publicado em: 27/04/2017
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7. Estudo do processo de aglomeração de pectina em leito fluidizado : efeito sobre as propriedades físico-químicas / Study of the pectin agglomeration process : effect on physicochemical properties
The agglomeration of food powders is commonly used to produce porous granules with higher wettability and dispersability. The agglomeration process promotes the particles enlargement and reduction of fines and result in some benefits, including lower rates of particles elutriation and danger reduction in handling or inhalation. Fluid bed agglomeration is com
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/03/2011
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8. A poesia de Cecília Meireles em busca do rosicler
This study investigates the imaginary in Metal rosicler by Cecilia Meireles, one of her last books which was published in 1960. The aim is to analyze the relation of this book and the structures of alchemy imaginary. As well as the spiritual alchemists searched for the transmutation of insignificant metal in order to make it possible for men to reach the enl
Publicado em: 2011
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9. New solution for the problem of air dissolution in hydropneumatic reservoir. / Nova solução para o problema da dissolução de ar em reservatório hidropneumático.
This work proposes to present a new solution for the problem of the air dissolution in hydropneumatic reservoir. In the introductory chapter are presented information and characteristics about hydropneumatic reservoir, mainly the ones related to his operation. In this chapter it is commented about the main solutions used to overcome the problem of the air di
Publicado em: 2009
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10. Study of Fluidized Bed Hot Melt Granulation using solid Dispersion of Indomethacin / Estudo da granulação por solidificação de materiais fundidos em leito fluidizado utilizando dispersão sólida de indometacina
Recently, there is a renewed interest in the fluidized bed hot melt granulation for the preparation of solid dosage forms in the pharmaceutical industry and academy. The several advantages of this technique have attracted may researchers, but the main advantage are undoubtedly the solvent free operation and the short processing times. The aim of this work wa
Publicado em: 2009
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11. Study of behavior of copper in systhetic rainwater of São Paulo and Rio de Janeiro and its protection against corrosion by coating and patino exposed to climate action. / Estudo do comportamento de cobre em águas de chuva sintéticas de São Paulo e Rio de Janeiro e sua proteção contra corrosão por revestimentos e pátinas expostos à ação climática.
Copper is one of the metals most widely used to produce metallic artifacts of the artistic and cultural heritage. This is partially due to its great ability to combine with other compounds, forming patinas of different colors. Many of such artifacts are permanently exposed to open air, being thus subjected to the action of atmospheric agents such as rain and
Publicado em: 2009
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12. Estudo da técnica de leito de jorro convencional para secagem de microcápsulas de caseína e pectina / Study of conventional spouted bed on casein and pectin microcapsule drying
The use of spouted bed technique in the drying of paste has been subject to many researches in the past years due to the possibility of obtaining high quality products at low cost. In present work the influence of this technique on microcapsule drug delivery systems performance was evaluated. Casein-pectin microcapsules with entrapped indomethacin and acetam
Publicado em: 2006