The rheological characteristics of digested sludge are severely temperature dependent. An effect of temperature on rheological properties of digested sludge is partially irreversible. In this paper, the effects of temperature change and thermal history on viscosity of digested sludge were studied using a stress-controlled rheometer which was connected to a temperature controlled water bath. Dig...

This study was conducted to investigate the effect of duck skin on cooking loss, emulsion stability, pH, color, protein solubility, texture profile analysis (TPA), apparent viscosity, and sensory characteristics of press type duck ham with different ratio of duck breast meat and duck skin. Five duck ham formulations were produced with the following compositions: T1 (duck breast 70% + duck skin ...

7 Thickness perception of starch-thickened products during eating has been linked to starch viscosity 8 and salivary amylase activity. Calcium is an essential cofactor for -amylase and there is anecdotal 9 evidence that adding extra calcium affects amylase activity in processes like mashing of beer. The 10 aims of this paper were to 1) investigate the role of salivary calcium on -amylase acti...

7 Thickness perception of starch-thickened products during eating has been linked to starch viscosity 8 and salivary amylase activity. Calcium is an essential cofactor for -amylase and there is anecdotal 9 evidence that adding extra calcium affects amylase activity in processes like mashing of beer. The 10 aims of this paper were to 1) investigate the role of salivary calcium on -amylase acti...

We show that many salient hemodynamic flow properties, which have been difficult or impossible to assess in microvessels in vivo, can be estimated by using microviscometry and fluorescent microparticle image velocimetry in microvessels >20 microm in diameter. Radial distributions in blood viscosity, shear stress, and shear rate are obtained and used to predict axial pressure gradient, apparent ...

Hereditary spherocytosis is a common hemolytic anemia associated with deficiencies in spectrin, the principal structural protein of the erythrocyte membrane-skeleton. We have examined 20 different individuals from 10 spherocytosis kindreds and 2 elliptocytosis kindreds to determine the effects of different levels of spectrin deficiency on the viscoelastic properties of the erythrocyte membrane....

HAYNES, ROBERT H. Physical basis of the dependence of blood viscosity on tube radius. Am. J. Physiol. 1g8(6) : I 1g3--1200. 1g6o.-Two theories are applied to measurements of the decrease in apparent viscosity of blood in narrow tubes (FahraeusLindqvist effect). First, the effect may be attributed to the presence of unsheared laminae in the fluid (sigma phenomenon), and it was found that the thi...

Experimental and computational studies were performed to elucidate the role of turbulent stresses in mechanical blood damage (hemolysis). A suspension of bovine red blood cells (RBC) was driven through a closed circulating loop by a centrifugal pump. A small capillary tube (inner diameter 1 mm and length 70 mm) was incorporated into the circulating loop via tapered connectors. The suspension of...

Štern P., pokorný J., Šedivá A., Panovská Z. (2008): Rheological and sensory characteristics of yoghurt-modified mayonnaise. Czech J. Food Sci., 26: 190–198. Rheological and textural characteristics were studied in a set of 11 samples of yoghurt-modified mayonnaise at 15, 20, and 25°C. The rheometer Rheostress 300 was used to determine the static yield value, apparent viscosity, thixotropy, and...

Concentrated erythrocyte (i.e., red blood cell) suspensions flowing in microchannels have been simulated with an immersed-boundary lattice Boltzmann algorithm, to examine the cell layer development process and the effects of cell deformability and aggregation on hemodynamic and hemorheological behaviors. The cells are modeled as two-dimensional deformable biconcave capsules and experimentally m...