Based on the advection-diffusion equation of suspended sediment, a general formula vertical distribution sediment concentration was derived by considering influence velocity. The new tested against over 3000 sets field data and obtained reasonable agreement. Comparing with Rouse concentration, accuracy increases significantly, shortcoming underestimation profile in practical application is revi...

The spatial distribution of stars in a disk of a galaxy can be described by a radial scale length and a vertical scale height. The ratio of these two scale parameters contains information on the axis ratio of the velocity ellipsoid, i.e. the ratio of the vertical to radial stellar velocity dispersions of the stars, at least at some fiducial distance from the center. The radial velocity dispersi...

A series of experiments was carried out using a dual sensor conductance probe to measure the local axial oil velocity distribution and the local oil volume fraction distribution in vertical, oil in water bubbly flows in an 80mm diameter vertical pipe. Values of the water superficial velocity were in the range 0.276 1 ms to 0.417 1 ms , values of the oil superficial velocity were in the range 0....

OBJECTIVE To evaluate vertical forces in the pads of German Shepherd dogs by relative percentage among total limb vertical forces using a pressure sensitive walkway. PROCEDURE A pressure sensitive walkway was used to collect vertical force data for each pad of the limbs of 16 healthy client-owned German Shepherd dogs used for kinetic gait analysis. The vertical force for each pad was evaluate...

in this study, we have theoretically investigated the effect of electron stopper layer on internal temperature distribution of high performance vertical cavity surface-emitting laser emitting at 1305 nm.  simulation software pics3d, which self-consistently combines the 3d simulation of carrier transport, self-heating, gain computation and wave-guiding, was used. simulation results show that cha...

Various hypotheses on the origin of cerebellar downbeat nystagmus (DBN) have been presented; the exact pathomechanism, however, is still not known. Based on previous anatomical and electrophysiological studies, we propose that an asymmetry in the distribution of on-directions of vertical gaze-velocity Purkinje cells leads to spontaneous upward ocular drift in cerebellar disease, and therefore, ...