Studies in a murine model have shown that decompression stress triggers a progressive elevation in the number of circulating annexin V-coated microparticles derived from leukocytes, erythrocytes, platelets, and endothelial cells. We noted that some particles appeared to be larger than anticipated, and size continued to increase for ≥24 h postdecompression. These observations led to the hypothes...

Shear deformations of Cu57Zr43 bulk metallic glass (BMG) model systems are performed using molecular dynamics simulation. The results suggest that both the hydrostatic stress and the stress normal to the shear plane should affect the shear response (modified Mohr–Coulomb yield criterion). We see shear localization and shear band nucleation in both a small system of 2000 atoms, and large systems...

Laboratory measurements of rock strength provide limiting values of lithospheric stress, provided that one effective principal stress is known. Fracture strengths are too variable to be useful; however, rocks at shallow depth are probably fractured so that frictional strength may apply. A single linear friction law, termed Byedee's law, holds for all materials except clays, to pressures of more...

We study a quasi-2D granular gas that is vertically vibrated. Precise particle tracking from a Phantom V7.2 camera which captures images at 63492 frames per second allows accurate measurement of the momentum transfer from individual collisions as well as from particle motion. With this, we are able to obtain the experimental measurement of the stress tensor. The time-averaged total stress measu...

Patellofemoral pain (PFP) is the most common overuse injury of the lower extremity. It has been hypothesized that PFP is the result of increased pressure on highly innervated subchondral bone. A recent finite element (FE) modeling study has suggested that persons with PFP demonstrate elevated hydrostatic pressure and octahedral shear stress in patella articular cartilage. It is unclear however ...

The contact between a liquid and an elastic solid generates a stress vector depending on the curvature tensor in each point of the separating surface. For nanometer values of the mean curvature and for suitable materials, the stress vector takes significant amplitude on the surface. Although the surface average action of the liquid on the solid is the hydrostatic pressure, the local strain gene...

Using leaderless alkaline phosphatase as a probe, it was demonstrated that pressure treatment induces endogenous intracellular oxidative stress in Escherichia coli MG1655. In stationary-phase cells, this oxidative stress increased with the applied pressure at least up to 400 MPa, which is well beyond the pressure at which the cells started to become inactivated (200 MPa). In exponential-phase c...

Abstract In geothermal reservoir systems, changes in pore pressure due to production (depletion), injection or temperature result a displacement of the effective stresses acting on rock matrix aquifer. To compensate for these intrinsic stress changes, is subjected poroelastic deformation through and volume. This turn may induce network thus hydraulic properties Therefore, conception precise mod...

The same tendency that causes soap bubbles to achieve a minimum surface area for the volume enclosed seems to account for many of the features of growth and division of bacteria, including both bacilli and cocci. It is only necessary to assume that growth takes place in zones and that only in these zones does the tension caused by hydrostatic pressure create the strain that forces the cell to i...

We find a new class of data for which the Prandtl boundary layer equations and the hydrostatic Euler equations are locally in time well-posed. In the case of the Prandtl equations, we assume that the initial datum u0 is monotone on a number of intervals (on some strictly increasing on some strictly decreasing) and analytic on the complement and show that the local existence and uniqueness hold....