A series of non-peptidergic antagonists of NPY have been synthesized and are comprised of oxadiazole, thiadiazole and thiadiazole oxide derivatives of dihydropyridines of Formula I. In the engine, also, a turbo angular velocity computing means, which calculates an angular velocity by obtaining a plurality of pulses per one rotation of the turbine shaft, is provided. When new resources are requested by a network, a search is made for free resources in the coexistence band. The body extends above and shields the hand gripping bar.