Sentences with phrase «shear stress»

Of course one of the problems with it is there's a bit of shear stress on the cells which they have to resolve.
The fluid shear stress sensed by the primary cilium at the apical cell surface is responsible for the induction of autophagy.
Ke Jia of Beijing University and colleagues explore the relationship of the two quakes with a statistical analysis of aftershocks in the region as well as the evolution of shear stress in the lower crust and upper mantle in the broader quake region.
Previous research has shown that water flow exerts shear stress to remove the biofilm.
The very low shear stress can be attributed to the abundance of weak clay (smectite) and thermal pressurization effects, which can facilitate fault slip.
They showed that the immune cells could bind to the melanoma cells under shear stress conditions similar to those in the bloodstream.
Mechanical stress is important in the physiological functioning of many organs (e.g., stretching in muscles, compression in bones, shear stress in the circulatory system and in the kidneys).
\ n \ n «It?s still not clear how the cells sense shear stress, and researchers are trying to unravel the chain of events between mechanical force and stem cell production in order to manipulate the process to make blood stem cells for transplant.»
Low Coseismic Shear Stress on the Tohoku - Oki Megathrust Determined from Laboratory Experiments
The results show a small stress drop with very low peak and steady - state shear stress.
Because the blood in the 150 - micrometer - long embryonic heart is so viscous, the speed and turbulence of the blood causes the vessel walls to experience a high shear stress — like a skateboarder would experience upon falling and sliding across pavement.
«This unstable state concludes with an actual labquake, in which the shearing block rapidly displaces, the friction and shear stress decrease precipitously, and the gouge layers simultaneously compact,» he said.
Following a frictional failure in the labquake, the shearing block moves or displaces, while the gouge material simultaneously dilates and strengthens, as shown by measurably increasing shear stress and friction.
The decrease in histone methyltransferase EZH2 in response to fluid shear stress alters endothelial gene expression and promotes quiescence.
Investigating the effect of spatially varying wall shear stress on lymphatic endothelial cell alignment and transcriptional regulation Eleftheria Michalaki, Stanford University
The study is the first to provide a direct measure of endothelial monolayer adhesion under physiologic shear stress conditions.
When cells had mutations in NOTCH1, however, shear stress failed to protect the valve and, instead, the cells activated a detrimental gene program that drives bone formation.
In the endothelium, the autophagic flux activation by the blood flow - induced shear stress is an atheroprotective mechanism.
Interestingly, fluid shear stress also modulates how tumor cells respond to apoptosis death signals in the bloodstream.
Our lab has shown that physiological levels of fluid shear stress desensitize white blood cells to bacterial activation signals.
This is a good way to learn to deadlift because it doesn't require as much hip and ankle mobility as conventional and sumo pulling and it puts less shearing stress on the spine.
This gives a smaller base of support, hindering balance and putting excess shear stress on the knee.
Synergistic effect of Valsalva and spinal erector isometric contraction in the promotion of spinal stability under a load that generates a vertebral shear stress.
In the case of lunges and split squats, narrow stances and forward lunges can increase knee problems due to tibial inclination and subsequently shear stress.
Pulmonary arterial constriction causes increased flow velocity, especially with exertion, and resultant shear stresses further damage the endothelium.
Calculated preliminary skin stress, core shear stress
The trophoblasts along with blood vessel cells were added to small dextran beads that were then spun around in a container filled with cell culture fluid, creating shear stress and rotational forces to better mimic the environment at the maternal - fetal interface than static cell - culture systems.
As it pertains to knee problems, we need more hip dominant work to reduce shear stress and reinforce the hamstrings and glutes which support the knee.
Tests showed very low shear stress (resistance to slip) attributable to the abundance of weak, slippery clay material.
Exposure of the epithelial monolayer to an apical fluid shear stress (0.2 dyne cm 2) that mimics that found in living kidney tubules results in enhanced epithelial cell polarization and primary cilia formation compared to traditional Transwell culture systems.
Shear stress on endothelial cells is a potent stimulus for NO production.
Smaller crystals of rock are more vulnerable to deformation, and the shear stress placed on the rocks during the bending and twisting of subduction tends to metamorphose the rocks and reduce the crystal sizes, increasing their vulnerability.
While low - shear stress, roughly equivalent to the force generated by taking a drink of water, removed only a quarter of the wild - type biofilm, the same force removed 70 percent of the biofilms with mutant Candida.
Coulomb's equation states that in order to slide one hand against the other the shear stress — akin to the force applied to slide your hands — divided by the surrounding pressure — squeezing the sand together — must equal something called the friction coefficient.
But for some reason, the San Andreas Fault and other interplate faults slip under very low shear stress, much lower than is required to make rock samples slip in the laboratory: The rock here slides when lab tests say it should remain immobile.
They also measured the «shear stress» or intensity with which the surfactant drags the water.
In physics, shear stress is a stress state in which the shape of a material tends to change (usually by «sliding» forces — torque by transversely - acting forces) without particular volume change.
Lowering caveolin - 1 expression in human vascular endothelial cells inhibits signal transduction in response to shear stress.
They found that blood flow puts a shear stress on the valve tissue that normally protects the valve from calcification by triggering NOTCH1 to turn on in the cells that line the valve.
Within the SCS, CD169 - mediated adhesive interactions that helped retain the cells, presumably against the shear stresses exerted by lymph flow.
Potential result — shear stress on your sacroiliac joints.
Floods released from glacially dammed lakes and a landslide - dammed lake punctuate this record.The glacial geologic reconstruction was evaluated by calculation of basal shear stress, and yielded the following values for flow pattern in plan view: strongly converging — 1.21 ± 0.12 bars (n = 15); nearly uniform — 1.04 ± 0.16 bars (n = 11); and strongly diverging — 0.84 ± 0.14 bars (n = 16).
This flow exerts a shearing stress on the ocean surface, which results in the deflection of the upper layer of water above the thermocline to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
a b c d e f g h i j k l m n o p q r s t u v w x y z