A circuit board including a desired number of electrically insulating layers and wiring layers laminated alternately, and an inner via hole for securing an electrical connection between the wiring layers by compressing and hardening a conductive paste including a conductive particle and a resin. When a revolution speed Ne of the engine reaches the setting of the control start revolution speed Nstart, operation control of the engine starts. A first-come, first-served basis controller decides the sequence of introducing the ion beam to the treatment rooms based on the order in which the respective irradiation ready signals have been inputted. fermented biomass can be diverted in the form of a side stream in liquid contact with a main fermentor. An electrical charge is applied to the upper end of the pin to attract charged materials, such as DNA, and to selectably segregate charged materials from the liquid sample.