Nucleotide and amino acid sequences of several G protein coupled receptors are described. The method includes: predefining an optimization target for at least one imaging quality parameter that represents the imaging quality of the system; determining the imaging quality of the optical system while taking account of the layer construction of the interference layer system; and varying the layer construction for approximating the imaging quality parameter to the optimization target. A touch switch, such as touch plates, is on the housing, coupled to the circuit board, and configured to activate the light source. The sensors further can include a communication component configured to wirelessly transmit the detected signal to at least another of the plurality of wireless sensors, and wirelessly receive a signal transmitted from at least one of the remaining sensors in the network. An opposing set of brushes extends from the interior of the lower end into the chamber. The feeder is provided with a plurality of switching devices and a master electronic device which is in operative communication with the switching devices and has a plurality of power restoration plans stored therein.