A vibration damping technique for a wind turbine system is described. In particular, the invention provides a process for preparing a homopolymer andor copolymer having an irregular particle structure anda melt flow index of from 1. A processor of a diagnostic device integrates the acceleration signal to generate a velocity signal and temporally correlates the velocity signal and an electrical cardiac signal. By use of the disclosed handle, a high speed lightweight orbital polisher can be employed for providing a high gloss finish to most floor surfaces. When the fourth information does not include the first information and the second information does not include the third information, it is decided that the cartridge mounted in the image forming apparatus cannot be used.