Systems and methods of diagnosing a condition of a reverse-voltage protection switch in an electric system. Provided are a film formation composition for preventing the blackening of the surface of the steel sheet, comprising: 2. The penalty function is evaluated for each entry of each trip segment timetable, and the departure time is selected in order to minimize the penalty. The insulating layer on an upper region of the opening and the corresponding wiring pattern are provided have a recess on the upper surface. Then, a first region of a Ge substrate second surface is heavily doped with the first dopant. The process includes at least a first catalytic dehydrogenation of n-butane to obtain a gas stream which is followed by at least a second oxidative dehydrogenation to form a second gas stream.