نتایج جستجو برای: pseudoplastic fluid

تعداد نتایج: 220563  

Journal: :Molecules 2012
Antonietta Baiano Marcella Mastromatteo Matteo Alessandro Del Nobile

The effects of either cooking temperature (45, 80, and 100 °C) or inclusion of seed particles on the dynamic-mechanical and sensorial properties of value-added Crimson seedless, Black Pearl, or Baresana grape-based smoothies were studied. The inclusion of seed particles resulted in significant increases of the phenolic content, both in Black Pearl and Baresana, but it did not affect in a negati...

2013
C. M. Scheid L. A. Calçada

The procedure usually employed for specifying a set of hydrocyclones used in Newtonian fluidsolid separation processes can be extended to the case of non-Newtonian fluids. The apparent viscosity, μapp, is the link between the two cases, and can be evaluated from the knowledge of the shear stress function, S, and the characteristic rate of shear, λ*. In order to verify the validity of this, expe...

1993
Van Emden Henson

have been extensively studied. Various existence and uniqueness results are given in [1], [2], and [3], to name a few. More recently, in [4], it is shown that by certain transformations the boundary layer equations for the class of non-Newtonian uids named pseudoplastic can be generalized in the above form for the ODE case n = 1. Under this physical interpretation the above equation, considered...

Journal: :International journal of biological macromolecules 2013
Kuttuvan Valappil Sajna Rajeev K Sukumaran Lalitha Devi Gottumukkala Himani Jayamurthy Kiran S Dhar Ashok Pandey

The aim of this work was to study the production of exopolysaccharide (EPS) from a novel ustilaginomycetes yeast strain Pseudozyma sp. NII 08165. The culture produced 3.5g/l EPS on fourth day of fermentation in a glucose-based medium. The structural characterization revealed that the EPS was a polymer of glucose, galactose and mannose in the ratio of 2.4:5.0:2.6 with a molecular weight of 1.7MD...

2004
Jiwen Wang Leon L. Shaw Anping Xu Thomas B. Cameron

In this paper, we describe a solid freeform fabrication procedure for human dental restoration via porcelain slurry micro-extrusion. Based on submicron-sized dental porcelain powder obtained via ball milling process, a porcelain slurry formulation has been developed. The formulation developed allows the porcelain slurry to show a pseudoplastic behavior and moderate viscosity, which permits the ...

Journal: :Journal of colloid and interface science 2003
Xavier Lopez Per H Valvatne Martin J Blunt

The majority of complex fluids used in oil-field applications are polymeric solutions exhibiting shear-thinning (pseudoplastic) behavior in solution. We study the flow of power-law fluids in porous media using network modeling. We use realistic representations of porous media that capture the geometry and topology of sands and sandstones as input to our flow model. The bulk rheology (variation ...

2013
Eskandar Moghimipour Maryam Kouchak Anayatollah Salimi Saeed Bahrampour Somayeh Handali

Acetaminophen is used as an analgesic and antipyretic agent. The aim of the study was evaluation of the effect of different polymers on rheological behavior of acetaminophen suspension. In order to achieve controlled flocculation, sodium chloride was added. Then structural vehicles such as carboxymethyl cellulose (CMC), polyvinyl pyrrolidone (PVP), tragacanth, and magnesium aluminum silicate (V...

2013
Heiko Gimperlein Ernst P. Stephan

This article discusses the well-posedness and error analysis of the coupling of finite and boundary elements for transmission or contact problems in nonlinear elasticity. It concerns “pseudoplastic”, p–Laplacian-type Hencky materials with an unbounded stress–strain relation, as they arise in the modelling of ice sheets, non-Newtonian fluids or porous media. For 1 < p < 2 the bilinear form of th...

2011
Valeria Alzari Daniele Nuvoli Sergio Scognamillo Massimo Piccinini Emilia Gioffredi Giulio Malucelli Salvatore Marceddu Mario Sechi Vanna Sanna Alberto Mariani

Frontal polymerization has been successfully used to synthesize poly(N-isopropylacrylamide) nanocomposite hydrogels containing graphene. The latter was directly achieved by ultrasound treatment of a dispersion of graphite inN-methylpyrrolidone. The dispersion, having the concentration of 2.21 g L , was characterized by TEM analysis and mixed with suitable amounts of N-isopropylacrylamide for th...

Journal: :International journal of biological macromolecules 2016
Hwee-Feng Tan Chee-Yuen Gan

Functional polysaccharide was isolated from Momordica charantia, with a yield of 36% (w/w). M. charantia bioactive polysaccharide (MCBP) was an acidic and branched heteropolysaccharide with a molecular weight of 92 kDa. Fourier transform infrared spectroscopic analysis indicated that MCBP was a pectin-like polysaccharide with an esterification degree of 53% and it contains numerous monosacchari...

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