Objective To study counteracting effects of high frequency vibration on simulated weightlessness-induced atrophy of soleus muscles in rats.

In this paper,the effects of high frequency vibration on sludge liquefaction are studied to improve the sludge transporting effiency by means of pipeline.

Farthermore,a simulation program is designed for the dynamics system by using a new fast-integration method to simulate the high frequency vibration of the wheel and track under the exciting of wheel-flat,based on comparing and analyzing the simulation result with the Euler model.

Large-scale dynamic systems with local high-frequency vibration and local nonlinearity require small integration time step which greatly decreases the effeciency of the direct integration method.

Whereas the importance symptom of contact friction is high-frequency vibration.

To obtain detail information of high-frequency vibration in cylindrical shell,the governing equation of energy density about bending vibration in cylindrical shell is developed based on the relationship of an energy balance and thin shell theory.

To study the process technique of suferfine grind of radix astragal that is difficult to be grinded with traditional methods,the high frequency vibrated mill was used to grind radix astragal which was dry root of astragalus membranaceus containing high carbohydrates and fiber contents.

Practical effect of PHC piles driven into gravel layer by high-frequency vibratory hammer;