Abstract: A method of treating a polychlorinated aromatic compound or a hydrocarbon oil containing a polychlorinated aromatic compound involves the step of heating while stirring the polychlorinated aromatic compound or the hydrocarbon oil containing the polychlorinated aromatic compound in the presence an alkali metal tert-butoxide as a reactant to remove chlorine from the polychlorinated aromatic compound and provide a post-reaction system with no chlorine.

Abstract: An electronic device is provided which is configured for attachment to a coaxial cable having a central conductor and an outer conductor. The electronic circuit includes connection conductors that each have a central conductor connection end that is configured to have a portion for engaging and penetrating into the central conductor and to have a further portion serving to impede the connection conductors from becoming withdrawn from the coaxial cable. The configuration of the ends of the connection conductors can be that of an arrowhead. An enclosure is provided around the electronic circuit and the portion of the coaxial cable to which the electronic circuit will be coupled by the connection conductors. In addition, the central conductor are made discontinuous between the points at which the connection conductors engage into the central conductor.

Abstract: A semiconductor switching circuit using semiconductor devices includes steep front wave thyristors which are connected in parallel and inverse with each other in their forward directions. An inductor is connected in series between a power source and the semiconductor switching circuit. The semiconductor switching circuit has an instant disconnection time of 100 to 1000 microseconds.