The present invention is directed toward a system and method that facilitates investment account transfers where the time standard for reliably accomplishing a transfer may be decreased. The exchange system integrates an IP terminal and a legacy terminal in a single exchange system, controls a call of the IP terminal in the same manner as an extension subscriber, and contains at least one IP terminal connected to the IP network. A detector measures interference intensities of the at least three combinations. The apparatus and methods are also useful during a variety of laparoscopic, obstetric, cardiovascular, liposuction, plastic, orthopedic, restorative, and other procedures. The present invention furthermore relates to a process for the preparation of the compositions and their use for the production of shaped articles, in particular housings of flat screen apparatuses. In the case where the powdery particles are conveyed to a reservoir tank near the roots blower, the frequency of a power source of a roots blower driving motor is reduced, thereby reducing an output of the roots blower.