Endless belt for power transmitting according to the present invention is a tension-type belt by link chains, and has high power transmitting efficiency although it can be produced with relatively low cost. Embodiments include a system which displaces the battery from the same side or opening in which the replacement battery is inserted, and a system which displaces the battery from another opening in the battery chamber. The basis function kernel may comprise one or more operators configured to manipulate basis components. An electronic control system may be provided to control a trigger signal to compensate for flash-to-flash time jitter in the light source. Rather than utilizing a serial approach, a parallel approach is taken where both patient situation and prosthetic device can be modified at the same time. The methods comprise a double-dehydrogenation reaction step in which a functionalized aminohydroazepinone skeleton comprising an aminoimidazole ring is reacted with 2-iodoxybenzene to form the imidazo4,5-dazepine ring system present in formula.