A corona and static electrode assembly is attachable to a frame of an existing electrostatic separator and includes a pair of oppositely spaced end panels and an elongate corona support member disposed inwardly of and supported by the respective end panels. The nanodiamond containing thermoplastic thermal composite comprises from 0. Back electromotive force voltages are detected when the inverter circuit is inactive for sensorless detection of motor position. The end wall portions have inner surfaces of constant or smaller varying radii of curvature and they are separated from the interior ends of the electrodes by more than one millimeter. The open-close valve is positioned on a portion of the process chamber, and opens and closes the process chamber to control a pressure inside the process chamber. In this manner, an SOIMOSFET is obtained with no parasitic element formed at the end portion of the SOI layer.