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Research from Indiana University in the area of hyperemia published.
"Normalization of brachial artery flow-mediated dilation (FMD) to individual shear stress area under the curve (peak FMD: SSAUC ratio) has recently been proposed as an approach to control for the large inter- subject variability in reactive hyperemia- induced shear stress; however, the adoption of this approach among researchers has been slow. The present study was designed to further examine the efficacy of FMD normalization to shear stress in reducing measurement variability," scientists in the United States report (see also Hyperemia).
"Five different magnitudes of reactive hyperemia- induced shear stress were applied to 20 healthy, physically active young adults (25.3 +/- 0. 6 yrs; 10 men, 10 women) by manipulating forearm cuff occlusion duration: 1, 2, 3, 4, and 5 min, in a randomized order. A venous blood draw was performed for determination of baseline whole blood viscosity and hematocrit. The magnitude of occlusion- induced forearm ischemia was quantified by dual- wavelength near- infrared spectrometry (NIRS). Brachial artery diameters and velocities were obtained via high- resolution ultrasound. The SSAUC was individually calculated for the duration of time- to- peak dilation. One- way repeated measures ANOVA demonstrated distinct magnitudes of occlusioninduced ischemia (volume and peak), hyperemic shear ...
- Shear-stress dependence of dinoflagellate bioluminescence.
- Magazine article from: The Biological Bulletin Maldonado, Elisa M. Latz, Michael I. June 1, 2007 700+ words
...stimulation of bioluminescence and levels of shear stress. The response threshold for flow stimulation...and Rohr, 1999). These threshold shear-stress levels are several orders of magnitude...intensity increases as a function of shear stress as a greater proportion of a population...
- Mechanical Resistance to Shear Stress: The Role of Echinoderm Egg Extracellular...
- Magazine article from: The Biological Bulletin M. THOMAS, FLORENCE I. EDWARDS, KRISTEN A. BOLTON, TOBY F. SEWELI, MARY A. ZANDE, JILL M. August 1, 1999 700+ words
...stress. To determine the effects of shear stress and the role of jelly coats in protecting...remaining intact after exposure to the shear stress was assessed. The results indicate that shear stress can damage eggs and that jelly coats...
- Role of caveolin-1 in the regulation of the vascular shear stress...
- Magazine article from: Journal of Clinical Investigation Frank, Philippe G. Lisanti, Michael P. May 1, 2006 700+ words
...regulate the vascular response to altered shear stress. In this issue of the JCI, Yu et al...Cav-1 may act as sensors of altered shear stress and that they also organize the signaling...on page 1284). ********** Shear stress: an important regulator of endothelial...
- Effect of fluid shear stress on endocytosis of heparan sulfate and low-density...
- Magazine article from: Journal of Biomedicine and Biotechnology Barkefors, Irmeli Aidun, Cyrus K. Egertsdotter, E.M. Ulrika January 1, 2007 700+ words
...atherosclerosis such that reduced rates of shear stress occurring at regions of high curvature are more prone to disease. The level of shear stress has direct influence on the thickness...is not detectable in cells exposed to shear stress. The internalized heparan sulfate and...
- Shear stress nucleation in microcellular foaming process.(Abstract)(Statistical...
- Magazine article from: Polymer Engineering and Science Chen, Lee Wang, Xiang Straff, Rich Blizard, Kent June 1, 2002 700+ words
...the very fine cell at the surface is the shear stress effect. The effect of shear stress on cell nucleation in polymer foaming process...Kim (5, 6) investigated the effects of shear stress and pressure on nucleation in LDPE foam extrusion...
- Multiplex shear stress-induced nucleation in dynamic microcellular foaming...
- Magazine article from: Polymer Engineering and Science Zhu, Wenli Zhou, Nanqiao Wu, Hongwei December 1, 2006 700+ words
...9] first proposed the concept of shear stress-induced nucleation. Their investigation...a consequence, introduction of the shear stress becomes necessary to improve the bubble...It was found that the effect of shear stress on the bubble nucleation is significant...
- Tryptophanyl-tRNA synthetase fragments control response to shear stress.
- Newspaper article from: Heart Disease Weekly February 8, 2004 700+ words
...synthetase fragments control response to shear stress. According to recent research from...responses to flow-induced fluid shear stress was studied," wrote E. Tzima and...and prevented transcription of several shear stress-responsive genes. In addition, T2...
- The effects of hydrodynamic shear stress on fertilization and early development...
- Magazine article from: The Biological Bulletin Mead, Kristina S. Denny, Mark W. February 1, 1995 700+ words
...aspect of turbulent flow (hydrodynamic shear stress) and measuring its effect on fertilization...fluid (a result of viscosity) causes a shear stress, [Tau], to be exerted on the fluid...called the energy dissipation rate. Shear stress has the units N/[m.sup.2...
Source: HighBeam Research, Research from Indiana University in the area of hyperemia published.