The invention relates to use of a pyrimidone derivative represented by formula or a salt thereof as therapeutic agents:Wherein m, n, p, X, Y, R1, R2, R3, R4 R5, are as defined herein. The connector assembly includes a connector and a cable attachable at one end to the connector. The device additionally has a heat exchanger that is fitted upstream of the catalytic converter, wherein the heat exchanger is used to adapt the temperature of the exhaust gas from the engine to an operating state of the catalytic converter. A primary switch is coupled to the primary winding. The cover is then replaced, thereby concealing the ends of the elastic band from disengagement. A controller energizes the reader antennas to activate RFID tags in those bowling pins that are in the pin-up position.