A semiconductor structure and fabrication method is provided for integrating wide bandgap nitrides with silicon. In this method, an image forming surface of a planographic printing plate is contacted with a non-image forming surface of another planographic printing plate, a weight of predetermined mass is placed thereon, and the planographic printing plates are slid against each other in a direction along the image forming surface. Each post is connected with a magnetic pole. The provider side includes a virtual private network in communication with the wide area network and a communication network. The response is then transmitted from the base unit to the remote unit for display. The tablet cassette includes a cartridge having space for containing tablets and an outlet for discharging the tablets, a tablet installation unit, and an oscillator vibrating the cartridge when tablets may not be discharged even if they are remained inside the cartridge.