نتایج جستجو برای: viscoelastic rheological properties

تعداد نتایج: 882614  

2000
Shinichi Tokumoto Yoshiaki Fujita Shinichi Hirai

1 I n t r o d u c t i o n In food industry, we can find many manipulative operations that deal with deformable rheologic materials such as dough, paste, jelly, and meat. Most these operations are done by humans. Especially, operations with large deformation of rheologic objects depend upon humans. For example, forming of pizza dough to a thin circular shape is performed by humans while extensio...

Journal: :Integrative and comparative biology 2009
Randy H Ewoldt Anette E Hosoi Gareth H McKinley

Nonlinear mechanical properties play an important role in numerous biological functions, for instance the locomotion strategy used by terrestrial gastropods. We discuss the progress made toward bioinspired snail-like locomotion and the pursuit of an engineered fluid that imitates the nonlinear viscoelastic properties of native gastropod pedal mucus. The rheological behavior of native pedal mucu...

Journal: :journal of structural engineering and geo-techniques 2011
iman mehdipour nicolas ali libre mohammad shekarchia

the sustainability of the built environment is increasingly coming to the forefront of infrastructure design and maintenance decisions. to address this, development of a new class of more sustainable cement-based materials is needed. fiber reinforced self-consolidating mortar (frscm) was developed by optimizing the micromechanical parameters, which control composite properties in the hardened s...

Journal: :علوم و تکنولوژی پلیمر 0
نادر طاهری قزوینی

the molecular weight distribution of 4 commercial isotactic polypropylene (ipp) samples was estimated using rheological data. the dynamic moduli data, obtained from rheological measurements in linear viscoelastic region was used for calculation of relaxation time spectrum, h(τ) and then shear relaxation modulus, g(t). finally, applying thimm kernel function and relaxation modulus data in genera...

Journal: :European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V 2007
Giulia Bonacucina Marco Cespi Monica Misici-Falzi Giovanni F Palmieri

The aim of this work was to verify how and to what extent rheological tests, carried out under dynamic (Heckel) and static (creep, stress/strain) porosity conditions, may serve as a valuable complement to the classic Heckel tests in the characterization of viscoelastic and densification properties of solid materials for pharmaceutical use. Six different modified (pregelatinized) starches were c...

Journal: :Biorheology 2013
P C Sousa J Carneiro R Vaz A Cerejo F T Pinho M A Alves M S N Oliveira

We investigated experimentally the rheological behavior of whole human blood subjected to large amplitude oscillatory shear under strain control to assess its nonlinear viscoelastic response. In these rheological tests, the shear stress response presented higher harmonic contributions, revealing the nonlinear behavior of human blood that is associated with changes in its internal microstructure...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2003
Manfred Keller Rainer Tharmann Marius A Dichtl Andreas R Bausch Erich Sackmann

This paper deals with correlations between the viscoelastic impedance of entangled actin networks and the slow conformational dynamics and diffusive motions of single filaments. The single filament dynamics is visualized and analysed by analysing the Brownian motion of attached colloidal beads, which enables independent measurements of characteristic viscoelastic response times such as the enta...

2009
Jonathan P. Rothstein

The unique rheological properties of viscoelastic wormlike micelle solutions have led to their broad use as rheological modifiers in consumer products such as paints, detergents, pharmaceuticals, lubricants and emulsifiers. In addition, micelle solutions have also become increasingly important in a wide range of industrial and commercial applications including agrochemical spraying, inkjet prin...

Journal: :Polymers 2021

Rheological properties related to the extrusion of polyolefins are shear viscosity, elongational slip velocity and their temperature- pressure-dependencies. These measured in rheology lab mainly via a parallel-plate rheometer capillary rheometer. Then appropriate rheological models have be used account for all these properties. Such either viscous (e.g., Cross model) or viscoelastic K-BKZ model...

The simultaneous effects of inulin addition (0-4%w/w), probiotic inoculum level (1-3%v/v) and fermentation temperature (37-45°C) on the dynamic rheological properties of probiotic non-fat yogurt were studied using response surface methodology. Frequency sweep tests were performed to measure structure strength and type of structure. Linear viscoelastic range in term of strain (LVE), structure st...

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