A design structure for a signal-handing apparatus or communication apparatus is provided which includes a common signal node operable to conduct a first signal, a first circuit coupled to the common signal node to utilize the first signal and a signal-handling element coupled to the common signal node. An image is formed at a display control circuit and the gradations of the image is converted at a luminance regulating circuit and the converted image is inputted to a liquid crystal display section. The service framework 235 comprises service event notification registries in which service-requesting entities register templates defining the types of services they want to locate and connect with. A ring-shaped concave portion is formed on the peripheral portion of the upper surface of the base, having an inside diameter smaller than the tone hole. The sleeve is tightly connected to the insulator and the spark plug body and is referred to below as the \u201cfirst sleeve\u201d. In certain embodiments, methods of the invention obtaining a plurality of different reactant molecules, attaching a unique identifier to the reactant molecules, and forming a droplet including the reactant molecules.