Provided are compounds and their pharmaceutically acceptable salts that are useful for the treatment of diseases related to the adenosine receptor. The network includes nodes that broadcast and receive data packets over a radio channel. Each chamber may include an analyte-specific reagent effective to react with a selected analyte that may be present in the sample, and detection means for detecting the signal. The belt conveyor includes a motor-driven roller co-operating with the belt for continuously feeding the belt in a conveying direction. The delay plate serves to produce a polarized laser beam with a rotating polarization vector, and in particular an elliptical or circular polarization of the laser beam. In use, the spunbonding apparatus can project at least one fiber onto the conveyer net.