We study the rheology of cornstarch suspensions, a non – Brownian particle system that exhibits discontinuous shear thickening. Using Magnetic Resonance Imaging (MRI), the local properties of the flow are obtained by the determination of local velocity profiles and concentrations in a Couette cell. For low rotational rates, we observe shear localization characteristic of yield stress fluids. Wh...

Sludge management accounts for approximately 60% of the total wastewater treatment plant expenditure and laws for sludge disposal are becoming increasingly stringent, therefore much consideration is required when designing a solids handling process. A membrane thickening aerobic digestion process integrates a controlled aerobic digestion process with pre-thickening waste activated sludge using ...

We have studied a sample of 24 edge-on interacting galaxies and compared them to edge-on isolated galaxies, to investigate the effects of tidal interaction on disk thickening. We found that the ratio h/z0 of the radial exponential scalelength h to the scale height z0 is about twice smaller for interacting galaxies. This is found to be due both to a thickening of the plane, and to a radial strip...

the results of batch settling tests (bst) are used to investigate settling behavior of solids suspension, which contribute to sizing thickeners. conventional methods in analyzing bst on the basis of visual and graphical procedures lead to sub-optimally sized and selected thickeners. a computational approach based on quantitative analysis of bst can be beneficial. about 300 settling experiments ...

background: in some studies, the involvement of dangerous psychological and behavioral factors in etiology and physiotherapy of vascular disturbances have been shown. in other studies, the relationship between the personality type and increase in cardiovascular disease has been demonstrated. the type d personality is defined as having two characteristics of negative affect and social inhibition...

Cylindrical cavitation bubbles, capable of generating extreme strain rates, are experimentally and theoretically studied in shear-thickening suspensions. Starting from the limit between continuous discontinuous shear thickening regimes, bubbles deform increasingly with increasing solid volume fraction until replaced by cavitation-induced fractures.

In an attempt to provide a better understanding of our finding that regions with contracting left ventricular myofibers need not develop a significant transmural systolic wall thickening gradient, the analytic approach of Costa et al. was applied to the four-dimensional dynamic data obtained 1 and 8 wk after surgical implantation of transmural radiopaque beads in the lateral equatorial left ven...

Thickening compositions of a new composition for printing mixed fabrics based on cotton and nitron fibers have been developed. The influence the components dampening rheological properties depending their concentration was studied. Established development thickening its physico-chemical properties.

Chemically, biologically, or radiologically contaminated surfaces can be treated using colloidal “vacuumable” gels containing alumina particles as a thickening agent, decontaminating solutions to inhibit/eliminate biological and chemical contaminants, Pluronic PE 6200 surfactant adjust the gel’s physicochemical properties. These have been shown remain efficient even after prolonged storage. In ...

This study explores the effects of silica flour and potassium chloride on rheological properties high temperature pressure gas wells. Seven different materials were used as additives which includes: fresh water, dyckerhoff, flour, antifoam, extender, fluid loss, dispersant, retarder, anti-settling agent, control dry viscosifier, accelerator. Four recipes prepared using these in mixtures. Recipe...