About temperature dependence of the rheological properties of human blood at low shear rates

1996 ◽  
Vol 69 (3) ◽  
pp. 305-307
Author(s):  
V. A. Mansurov ◽  
V. V. Kulebyakin ◽  
S. V. Vilanskaya
Keyword(s):  
Temperature Dependence ◽  
Rheological Properties ◽  
Human Blood ◽  
Shear Rates ◽  
Low Shear

Effect of Film Thickness on the Rheological Properties of Asphalts in Contact with Aggregate Surface

1998 ◽  
Vol 1638 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Shin-Che Huang ◽  
Jan F. Branthaver ◽  
Raymond E. Robertson ◽  
Sang-Soo Kim
Keyword(s):  
Thin Films ◽  
Film Thickness ◽  
Rheological Properties ◽  
Thickness Effect ◽  
Asphalt Binders ◽  
Shear Rates ◽  
Service Environment ◽  
Asphalt Mix ◽  
Plate Geometry ◽  
Low Shear

The effect of the interaction between aggregate and asphalt on asphalt mix properties has been a subject of many studies. However, studies using compacted mixtures cannot isolate the pure effects of the asphalt-aggregate interactions, while studies using mixtures of asphalt and fines cannot determine the asphalt rheology at the interface. In this study, direct measurement of asphalt rheology at the interface is investigated using the sliding plate geometry with machined aggregate plates. Significant differences in the behavior of asphalts in contact with aggregate plates have been observed, especially at low shear rates. One asphalt shows substantial aggregate surface-induced structuring, while another asphalt shows essentially none. In addition, the film thickness effect on the rheological properties of asphalt binders and asphalt aggregate mixtures was investigated. The results strongly show that thin films of asphalt on an aggregate surface have substantially changed rheological properties that are asphalt composition–dependent, and that asphalts that are graded alike as bulk materials do not have the same rheological properties as thin films, in this service environment.

Effects of hematocrit and plasma proteins on human blood rheology at low shear rates.

1966 ◽  
Vol 21 (1) ◽  
pp. 81-87 ◽  
Author(s):  
S Chien ◽  
S Usami ◽  
H M Taylor ◽  
J L Lundberg ◽  
M I Gregersen
Keyword(s):  
Human Blood ◽  
Plasma Proteins ◽  
Blood Rheology ◽  
Shear Rates ◽  
Low Shear

Rheological Properties of Multi-Block Associative Polyelectrolytes Obtained by Nitroxide-Mediated Solution Polymerization

2014 ◽  
Vol 1613 ◽  
pp. 143-149
Author(s):  
Alejandro Coronado ◽  
Areli I. Velazquez ◽  
Enrique J. Jiménez
Keyword(s):  
Rheological Properties ◽  
Creep Compliance ◽  
Viscoelastic Behavior ◽  
Degree Of Polymerization ◽  
Shear Rates ◽  
Linear Response Regime ◽  
Copolymer Structure ◽  
Rheological Experiments ◽  
Polymer Bearing ◽  
Low Shear

ABSTRACTA multi-block associative polyelectrolyte based on poly(methacrylic acid-ra-styrene) [MAA-S] and poly(octadecyl methacrylate) [ODMA] was synthesized through stepwise nitroxide-mediated solution polymerizations. The obtained polymer has a heptablock copolymer structure, alternating MAA-S as hydrophilic blocks (theoretical degree of polymerization [DPT] of 250), and ODMA as hydrophobic blocks (DPT = 15). Rheological properties, in the linear-response regime, of aqueous solutions (polymer content = 1.5 wt.%) were studied as a function of the amount of blocks on the polymer using steady-shear and creep-compliance experiments. Rheological experiments demonstrate that the viscoelastic behavior of the polymer bearing an ODMA block in terminal position greatly differs from that of the polymer with MAA-S block terminations. The former behaves as a newtonian fluid on a wider range of shear rates than the latter, which exhibit a shear-thinning behavior, even at low shear rates, independently of the molecular weight and number of blocks.

Effect of Aggregation on the Rheological Properties of Carbon Nanotube Dispersions

2006 ◽  
Vol 953 ◽  
Author(s):  
Sameer Sharad Rahatekar ◽  
Jeffrey W Gilman ◽  
K K Koziol ◽  
Simon Butler ◽  
James A Elliott ◽  
...  
Keyword(s):  
Shear Rate ◽  
Rheological Properties ◽  
Optical Observations ◽  
Interconnected Network ◽  
Shear Rates ◽  
High Shear Rates ◽  
Suspension Viscosity ◽  
The Matrix ◽  
Viscosity Enhancement ◽  
Low Shear

ABSTRACTIn this pape effect of nanotube aggrates on the rheological properties of multiwall carbonanntube abd epoxy suspension in epoxy resin.The base epoxy resin was found to be essentially Newtonian, and the progressive incorporation of nanotubes enhanced the low shear rate viscosity of the suspension by nearly two decades. At higher shear rates, the suspension viscosity asymptotically thinned to the viscosity of the matrix alone. The low shear rate viscosity enhancement was correlated with the optical observations of interconnected aggregates of carbon nanotubes, which themselves were induced by the low shear conditions. Intermediate shear rates resulted in a reduction in the size of the aggregates. High shear rates appeared to cause near complete dispersal of the aggregates. From these results it is conjectured that for this suspension, shear thinning is connected with the breaking of the interconnected network between aggregates of nanotubes, and not by nanotube alignment.

Absence of transition in viscosity of human blood between shear rates of 20 and 100 sec-1

1969 ◽  
Vol 26 (3) ◽  
pp. 389-392 ◽  
Author(s):  
S. E. Charm ◽  
G. S. Kurland ◽  
M. Schwartz
Keyword(s):  
Human Blood ◽  
Shear Rates
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