The invention relates to novel thiazolylbiphenylamides of the formula in which R1, R2, R3, R4, R5 and R6 are as defined in the disclosure, to a process for preparing these compounds and to their use for controlling unwanted micro-organisms. The plasma generation apparatus includes two oppositely arranged plasma guns each injecting a discharge gas to be ionized, and having a cathode for emitting electrons, and a converging coil for forming a magnetic flux to guide the emitted electrons, and polarities of the converging coils with respect to the cathodes in the two plasma guns are opposite to each other. A dissolved nitrogen concentration of the cleaning liquid is calculated from the measured amount of increase of dissolved oxygen concentration based on a predetermined relationship between a dissolved nitrogen concentration and an amount of increase of dissolved oxygen concentration. Explosive density in the primer path is less than the main-cavity density. The nail channel can also position a fastener, such as a nail, for driving into a workpiece. By this structure, it is possible to suppress decomposition of an electrolysis solution as much as possible and drastically reduce swelling of the batteries.