Apparent Permeability
Mostrando 1-12 de 169 artigos, teses e dissertações.
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1. Development of hollow fiber membranes with alumina and waste of quartzite
The development of ceramic membranes with different geometries and compositions extends the possibilities of industrial applications, inducing advantages in terms of increased permeability, membrane area by volume module and chemical, thermal and mechanical resistance. The use of low-cost raw materials is a trend that has grown in scientific research. The ai
Mat. Res.. Publicado em: 12/08/2019
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2. Efeito da adição de resíduos da construção e demolição (RCD) nas propriedades hidromecânicas de um solo areno-argiloso
RESUMO Diante de uma produção cada vez mais evidente dos resíduos sólidos resultantes das ações humanas, tais como os Resíduos da Construção e Demolição (RCD), destinar adequadamente estes materiais tem ganho importância no cenário atual, pois quando dispostos irregularmente atuam de forma degradante sobre o meio ambiente e contribuem com a prol
Matéria (Rio J.). Publicado em: 10/06/2019
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3. Influence of thickness on properties of plasticized oat starch films
The aim of this study was to investigate the effect of thickness (between 80 and 120 µm) on apparent opacity, water vapor permeability and mechanical properties (tensile and puncture) of oat starch films plasticized with glycerol, sorbitol, glycerol:sorbitol mixture, urea and sucrose. Films were stored under 11, 57, 76 and 90% relative humidity (RH) to stud
Braz. arch. biol. technol.. Publicado em: 2013-08
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4. Membrane permeability alteration of some bacterial clinical isolates by selected antihistaminics
Several antihistaminics possess antibacterial activity against a broad spectrum of bacteria. However, the exact mechanism of such activity was unclear. Hence, the aim of this study is to investigate their mechanism of antibacterial activity especially their effect upon the permeability of the bacterial cytoplasmic membrane. The effects of azelastine, cetiriz
Brazilian Journal of Microbiology. Publicado em: 2011-09
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5. Controle da liberação do éster etílico de indometacina a partir de nanocápsulas poliméricas através da variação da concentração do monoestearato de sorbitano / Controlled release of indomethacin ethyl ester from polymeric nanocapsules with the variation of the concentratio of sorbitan monostearate
O trabalho tem como objetivo determinar a influencia da concentração de monoestearato de sorbitano, componente do núcleo oleoso das nanocápsulas, na cinética de liberação do éster etílico de indometacina a partir de nanocápsulas de poli(ε-caprolactona) (PCL). Com este propósito o éster etílico de indometacina foi associado a cada sistema e sua
Publicado em: 2008
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6. A produção do paradoxo entre homem e real: ressentimento e rebeldia em Feliz Ano Novo / The paradox between man and reality: ressentment and rebellion in Feliz Ano Novo
This present dissertation had intended, in the first moment, to discuss the marking lines of the knowledges with which literature dialogues constantly, specially with philosophy. In the attempt of making visible the permeability of these knowledges, confronting borders and breaking the epistemological limits, we have analysed the book of short-histories Feli
Publicado em: 2008
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7. A study on the influence of titanium and cobalt ions in the magnetic and electromagnetic absorption properties of barium hexaferrite / Estudo da influência de íons titânio e cobalto nas propriedades magnéticas e absorvedoras de ondas eletromagnéticas de hexaferrita de bário / Estudo da influência de íons titânio e cobalto nas propriedades magnéticas e absorvedoras de ondas eletromagnéticas de hexaferrita de bário / A study on the influence of titanium and cobalt ions in the magnetic and electromagnetic absorption properties of barium hexaferrite
In this work Cobalt and Titanium doped Barium hexaferrites were synthesized by the ceramic method in order to study their use as electromagnetic absorbing materials in high frequencies. The dopants were used individually (Ti and Co) and with both simultaneously (CT). Ceramic characteristics and magnetic properties of calcined powders, as well as of their pel
Publicado em: 2008
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8. Efeitos da inibição da protoporfirinogênio IX oxidase sobre as trocas gasosas e fluorescência da clorofila a em plantas de soja (Glycine max L. Merrill) / Effects of inhibition of protoporphyrinogen oxidase IX on gas exchange and chlorophyll fluorescence of soybean plants (Glycine max L. Merrill)
The photosynthetic fixation of CO2 depends on the capture of light energy by the harvest complex (chlorophyll b and carotenoids), which transfer the energy to the photosystems reaction centers (chlorophyll a). The electrons transfer chain established between the photosystems generates reducing power necessary for the CO2 fixation in the Calvin cycle. The int
Publicado em: 2008
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9. Moisture effective diffusivity in porous solid mixtures / Difusividade efetiva de agua em misturas de solidos porosos
Porous solids have been applied in several industrial sectors, mainly as mixture of different solids. The physical characterization as well as the effective diffusivity of these materiaIs are important to the optimization of industrial processes that apply mass transport in porous solids. Investigations about effective diffusivity in solid mixture indicated
Publicado em: 2007
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10. Study of the toxicity induced by the anti-inflammatory sulindac and its metabolites, sulindac sulfone and sulindac sulfide / Estudo da toxicidade induzida pelo antiinflamatório sulindaco e seus metabólitos sulfona e sulfeto
Sulindac is a nonsteroidal anti-inflammatory drug (NSAID) known to inhibit non-selectively ciclooxygenases (COX) 1 and 2. Sulindac is therapeutically used as anti-inflammatory and analgesic in the symptomatic treatment of acute and chronic rheumatoid arthritis, osteoarthritis, and ankylosing spondylits. In addition to this property, a role in the prevention/
Publicado em: 2006
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11. Relationship of apparent and actual thickness of free phase gasoline and E-20 in column experiment / "Relação entre a espessura real e aparente da gasolina com etanol e da gasolina pura em colunas de laboratório"
Commercial gasolines sold in Brazil are added ethanol from 20 to 24% by volume. This oxygenated additive raises the octane level and reduces carbon monoxide emissions to the atmosphere. Underground storage tanks and gasoline lines are a major potential problem for soil and groundwater contamination. Since ethanol has cosolvent properties that alter the behav
Publicado em: 2003
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12. ASSESSMENT OF MERCURY (II) SPECIES BIOAVAILABILITY USING A BIOLUMINESCENT BACTERIAL BIOSENSOR
Mercury and its compounds are highly toxic, especially methylmercury - a potent neurotoxin. It has caused a significant number of human fatalities in several accidents around the world. Due to its wide dispersion through the atmosphere, mercury is considered a global pollutant, being deposited even in remote pristine aquatic systems, where it is biomagnified
Publicado em: 2003