OBJECTIVE This study extended previous work of Rice, Leonard, and Carter [AJOT, 52(8), 621-626] and examined the relationship between grip and pinch strengths and the forces produced while accessing common household containers in healthy, elderly persons. METHOD Forty-two women and 9 men 60 years of age and older were assigned randomly to one of four order groups in a counterbalanced, repeate...

We present a new analytic expression for turbulent equipartition (TEP) pinch of toroidal angular momentum originating from magnetic field inhomogeneity of spherical torus (ST) plasmas. Starting from a conservative modern nonlinear gyrokinetic equation [Hahm et al., 1988 Phys. Fluids 31, 2670], we derive an expression for pinch to momentum diffusivity ratio without using a usual tokamak approxim...

The pinch-off of an air bubble from an underwater nozzle ends in a singularity with a remarkable sensitivity to a variety of perturbations. I report on experiments that break both the axial (i.e., vertical) and azimuthal symmetry of the singularity formation. The density of the inner gas influences the axial asymmetry of the neck near pinch-off. For denser gases, flow through the neck late in c...

PURPOSE Simple decompression of the ulnar nerve has outcomes similar to anterior transposition for cubital tunnel syndrome; however, there is no consensus on the proper technique for patients with an unstable ulnar nerve. We hypothesized that 1) simple decompression or anterior ulnar nerve transposition, depending on nerve stability, would be effective for cubital tunnel syndrome and that 2) th...

We implemented a tridirectional survey to begin the standardization process for grasp and pinch terminology and protocols for testing and to improve the communication between rehabilitation professionals who assess hand strength. We surveyed the literature, occupational therapy clinics across the country, and occupational therapy educational programs. Our results reveal the current use, teachin...

The formation of bubbles by flow focusing of a gas and a liquid in a rectangular channel is shown to depend strongly on the channel aspect ratio. Bubble breakup consists in a slow linear 2D collapse of the gas thread, ending in a fast 3D pinch-off. The 2D collapse is predicted to be stable against perturbations of the gas-liquid interface, whereas the 3D pinch-off is unstable, causing bubble po...

Particle transport in magnetized plasmas is investigated with a fluid model of drift wave turbulence. An analytical calculation shows that magnetic field curvature and thermodiffusion drive an anomalous pinch. The curvature driven pinch velocity is consistent with the prediction of turbulence equipartition theory. The thermodiffusion flux is found to be directed inward for a small ratio of elec...

We present data on the pinch-off and coalescence of thin liquid alkane lenses floating on water. Pinch-off in quasi-2D lenses is distinctly different from pinch-off in axisymmetric 3D drops and involves a cascade of satellite droplets which extends to micron length scales. In contrast, coalescence of lenses is qualitatively similar to coalescence of 3D drops. Coalescence is predicted to involve...

Pinch-outs refers to the gradual thinning of thickness sedimentary layer laterally until there is no deposition and are a major topic modern research on automated drawing geological profiles. The rapid development smart systems imposed an urgent need for high-speed, accurate methods plot pinch-outs. However, because their complexity, excessive number branch paths, low rendering speed, poor reli...

The structure factor for electric field correlations in the two dimensional Coulomb fluid is simulated and compared to theories of dielectric function. Singular changes occur at BKT insulator conductor transition, as well a higher temperature correlation transition between poor electrolyte perturbed Debye-H\"uckel fluid. Structure factors are found differ canonical grand ensembles, with showing...