An information processing apparatus includes a jack, a noise-canceling section, a judgment section, and a first regulation section. Racemic mixtures of 5-substituted 4-hydroxy-2-furanones, including 5-substituted and 5,5-disubstituted, 4-hydroxy and 3,4-dihydroxy furanones are separated into pure enantiomers by crystallization with an enantiomerically pure base, such as cinchonidine. Another embodiment of the apparatus includes a ground plane for cleaning non-conductive objects, wherein the ground plane has apertures sized and arranged for receiving each object to be cleaned. In an embodiment, the memory may include a decoder configured to decode the address and select a location in either the transparent or non-transparent portion. In some embodiments, the system is contained within the radio relay device. The durable guard has a substantially arcuate outer edge sized to approximate the outer diameter of a chain ring, and it is operably secured to the planar mounting bracket such that the outer edge extends slightly beyond the outer diameter of the portion of the chain ring extending below the bottom bracket sleeve.