Dynamic Rheology
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Optimization of bread quality with quinoa flour of different particle size and degree of wheat flour replacement
Abstract The study aimed to assess the influence of quinoa flour of different particle size and degree of wheat flour replacement on dough and bread characteristics. Dynamic rheology and farinographs were used to describe the dough parameters. Specific volume, texture, porosity, color, overall quality and chemical assessment were performed as well. It could
Food Sci. Technol. Publicado em: 2020-06
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2. Optimization of bread quality with quinoa flour of different particle size and degree of wheat flour replacement
Abstract The study aimed to assess the influence of quinoa flour of different particle size and degree of wheat flour replacement on dough and bread characteristics. Dynamic rheology and farinographs were used to describe the dough parameters. Specific volume, texture, porosity, color, overall quality and chemical assessment were performed as well. It could
Food Sci. Technol. Publicado em: 11/11/2019
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3. Rheology applied to the environmental management of mineral tailings: focus on safer disposal and water reuse
Abstract Mining activities worldwide are subject to serious geotechnical accidents involving tailings dams. Therefore, many studies have focused on tailings dewatering before their deposition. This article studies the rheological properties of flocculated and thickened nickel tailings in order to determine the effect of the initial solid concentration and ty
REM, Int. Eng. J.. Publicado em: 2019-06
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4. Crystallization, thermal and mechanical behavior of oligosebacate plasticized poly(lactic acid) films
Abstract The biodegradable aliphatic oligoester oligo(trimethylene separate) (OTS) was synthesized by polycondensation and used to plasticize poly(lactic acid) (PLA). Casting films of PLA and PLA/OTS with concentrations of 1, 5 and 10 wt.% were prepared, and these films were characterized by thermal analyses, crystallinity, rheology and mechanical tests. DS
Polímeros. Publicado em: 29/11/2018
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5. EFFECTS OF NANOPARTICLES AND SURFACTANT CHARGE GROUPS ON THE PROPERTIES OF VES GEL
Abstract Application of viscoelastic surfactant (VES) fluids in hydraulic fracturing is still in the development stage, though shear thinning behavior and water solubility are the two important characteristics behind increasing interest in their use in fracturing jobs. Effects of ionic characteristics and the concentration of different surfactants on the rhe
Braz. J. Chem. Eng.. Publicado em: 2017-01
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6. Thermal, rheological and morphological properties of poly (Lactic Acid) (PLA) and talc composites
In this study, composites based on poly(lactic acid) (PLA)/talc were prepared at different compositions by melt mixing in a twin screw extruder. The effect of a nucleating agent, talc, on the crystallization behavior, rheological and morphological properties of PLA was investigated. DSC results showed that the addition of the mineral filler in the range betw
Polímeros. Publicado em: 27/05/2014
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7. Efeito de materiais particulados em sistemas modelos de biomembranas / Effect of Particulate Material on Biomembrane Model Systems
This work presents some of the properties of mimetic systems of pulmonary surfactants (PS) composed of dipalmitoylphosphatidylcholine (DPPC) and DPPC/cholesterol and their interactions with particulate material (PM) originated from the burning of sugar cane leaves which is known by clinical studies as an injurious agent of the respiratory airways. The PM des
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/05/2012
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8. Sistema microemulsionado: caracterização e aplicação na indústria de petróleo
Os tensoativos alquil-polietoxilados são amplamente utilizados em diferentes campos, desde a explotação de petróleo até aplicações na indústria farmacêutica. Uma das características mais interessantes destes tensoativos é a sua capacidade de formar sistemas micelares que apresentam uma geometria micelar específica, a chamada micela wormlike, tipo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/08/2011
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9. Evaluation of dynamic viscosity of implantable materials into vocal folds: comparison among superficial layer of temporalis fascia, deep layer of temporalis fascia and abdominal fat / Avaliação da viscosidade dinâmica de materiais implantáveis em pregas vocais: comparação entre camada superficial de fáscia temporal, camada profunda de fáscia temporal e gordura abdominal
OBJECTIVE: To compare the dynamic viscosity of superficial layer of temporalis fascia with that of other biological tissues traditionally used for vocal fold implants to treat vocal fold rigidity. STUDY DESIGN: Experimental. METHOD: Measurement of dynamic viscosity of samples of superficial layer of temporalis fascia, deep layer of temporalis fascia and abdo
Publicado em: 2010
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10. Saponinas dos frutos de ilex paraguariensis A. St. Hil. (mate) : desenvolvimento de metodologia analítica, estudos físico-químico e biológico
O presente trabalho teve por objetivo a avaliação físico-química e biológica de uma fração de saponinas enriquecida, obtida a partir de frutos verdes de Ilex paraguariensis A. St. Hil (mate). A espécie apresenta grande importância econômica para vários países sul-americanos, dentre eles o Brasil. Os frutos verdes da espécie acumulam significativ
Publicado em: 2010
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11. CaracterizaÃÃo de ligantes asfÃlticos modificados com borracha de pneu e aditivo / Characterization of asphalt binders modified with rubber and tire additives
In Brazil, the annual production of waste tires is in the order of 40 million units, with an estimated tire disposal of at least 25 million units per year. According to statistics of the National Association of Tire Industry, 100 million of useless tires are spread around the country in landfills, vacant land, rivers and lakes, causing enormous environment d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/03/2008
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12. Rheological behavior of PMMA/PS polymer blends compatibilized or not. / Estudo do comportamento reológico da mistura polimérica PMMA/PS compatibilizada ou não.
In this work, the dynamic behavior of polymethylmetacrylate/polystyrene (PMMA/PS) blends to which P(S-co-MMA) was added was studied. Several blend composition and copolymer concentrations were studied. The rheological behavior of blends was compared to Bousminas[1] and Paliernes generalized[2] models. The relaxation spectra of the blends were also inferred,
Publicado em: 2008