For a given isotropic and homogeneous field of magnetic fluctuations both the viscosity-α as well as the dynamo-α have been computed for accretion disks on the basis of a quasilinear approximation with shear flow and density fluctuations (i.e. magnetic buoyancy) included. The resulting viscosity-α proves to be positive for sufficiently strong shear (i.e. the angular momentum transport is outwar...

A sheet-type shear force sensor and a measurement system for the sensor were developed. The sensor has an original structure where a liquid electrolyte is filled in a space composed of two electrode-patterned polymer films and an elastic rubber ring. When a shear force is applied on the surface of the sensor, the two electrode-patterned films mutually move so that the distance between the inter...

Experiments have been conducted to measure compressional VP and shear wave VS velocities as well as unit-cell volumes densities of molybdenum to 12.0 GPa at room temperature using ultrasonic interferometry in conjunction with synchrotron x-radiation. Both VP and VS as well as the adiabatic bulk KS and shear G moduli exhibit monotonic increase with increasing pressure. A finite strain equation o...

Representation of surface roughness effects on aeolian sediment transport is a key source of uncertainty in wind erosion models. Drag partitioning schemes are used to account for roughness by scaling the soil entrainment threshold by the ratio of shear stress on roughness elements to that on the vegetated land surface. This approach does not explicitly account for the effects of roughness confi...

Surface-wave tomography for the Australian region, using data mostly from portable seismic recorders, reveals a very strong contrast in seismic shear-wave speed beneath central and western Australia and the east of the continent. Shear-wave speeds faster than the continental average extend to at least 200 km depth in the cratonic zone to the west of 140 E. Along an approximately north–south lin...

In this paper, the idealized density current models developed in previous studies that contain a rigid lid are evaluated. It is shown, through numerical experiments, that a realistic stable layer placed at the level of the rigid lid acts very much like a rigid lid, in confining the environmental flow to the levels below and in controlling the behavior of density currents that propagate in the f...

The notions of stress and hyperstress are anchored in 3-dimensional continuum mechanics. Within the framework of the 4-dimensional spacetime continuum, stress and hyperstress translate into the energy-momentum and the hypermomentum current, respectively. These currents describe the inertial properties of classical matter fields in relativistic field theory. The hypermomentum current can be spli...

Advanced manufacturing processes such as near-net-shape forming can reduce production costs and increase the reliability of launch vehicle and airframe structural components through the reduction of material scrap and part count and the minimization of joints. The current research is an investigation of the processing-microstructure-property relationship for shear formed cylinders of the Al-Cu-...