A piezoelectric device is produced by providing a material having a hydroxyapatite component. The control device operates the printing plate changing unit and the means for switching the folding device status of the folding device simultaneously in order to shorten the total operation time. Codes for STBC mappings in the time direction, the frequency direction and a combined time frequency mapping for multiple antennas are provided. When an article is accepted, the senior author joins the group of curators. The input vector segments and the representations of the relative energy differences are provided for individual coding. Field adjustment apparatus is presented having one or more apertures, which may be selectively plugged to adjust the electrical fields during plating.