A qumi-classicalmethod is developed to calculate the radiation damping of a relativisticparticle in a straight, continuous focusing system. In one limiting case where the pitch angle of the particle OPis much larger than the radiation opening angle l/y, the radiation power spectrum is similar to synchrotron radiation and the relative damping rate of the transverseaction is proportional to the r...

different construction materials with different roughness used to make circular weirs highly affect surface roughness and, in turn, flow hydraulics passing over these structures.  in the present research, numerous experiments under different hydraulic conditions were performed on a physical model to study the effects of roughness on flow hydraulics over a circular weir. the flow hydraulics incl...

the second virial coefficients are given as a spherical-core contribution plus a series of nonspherical perturbation terms. a revised analysis is given of the effect of long-range nonspherical terms in the intermolecular potential on the second virial coefficient given by a preferred hfdidl spherical core treatment of the integration for small intermolecular distances. this effect is considered...

We present a possible mechanism for the saturation of the velocity of photoinjected charge carriers in pure organic crystals, the analysis having been motivated by observations in pentacene. The mechanism is based on the strong wave vector dependence of the damping coefficient appearing in the appropriate effective mass equation. Our primary goal is to explore this mechanism in general terms ra...

The effect of a complex coefficient of thermal expansion upon the thermoelastic relaxation mechanism is analyzed. A phase angle in the thermal expansion has the effect of generating a very broad band of mechanical damping, in addition to the peak usually observed. Phase angles in the thermal expansion have been observed in several polymers, and they may be generated in composite materials in wh...

The role of zonal flows in the formation of the transport barrier in the helical plasmas is analyzed using the transport code. A set of one-dimensional transport equations is analyzed, including the effect of zonal flows. The turbulent transport coefficient is shown to be suppressed when the plasma state changes from the weak negative radial electric field to the strong positive one. This bifur...

Soft tissue exposure to vibrations was shown to increase the muscle activity [1]. External soft tissue vibration damping, using compression apparel, was associated with an increase of the damping coefficient of the soft tissue compartments of the leg and a decrease of the muscle activity during vibrations exposure [2]. It is assumed, but not known, that a decrease in muscle activity induced by ...

Due to bolt looseness or operating ambient temperature, fit clearance can often be found between the outer ring and housing. The vibration characteristics of a cylindrical roller bearing with localized defects are greatly affected by accuracy fault diagnosis may reduced. Thus, mathematical model for was constructed interaction housing described. classical were modeled, such as inner defect, def...

In this paper, the dynamic response of a vibratory system equipped with a single-unit impact damper is analyzed. The reliability behavior of this system is investigated when the stress and strength are distributed lognormally. The standard deviation of lognormal stress is realistically calculated by applying external noise and an uncertainty parameter in the simulated model. Variations of the d...