The invention is directed to a strategy for providing therapeutic or cosmetic benefit to skin by topically applying arginine chemically bound to a second compound in order to increase transepithelial delivery of arginine through a combination of increased solubility and flux across the skin. A pair of straight boundary lines are then fit to the endpoints of the straight depth lines, and a plane is defined to include these straight boundary lines. For testing the additional components arranged on vertical boundary lines, the wafer is rotated about its vertical axis through 90\xb0 relative to the first position into a second position. A recycling system includes a readerwriter configured to communicate with an IC tag provided to the device unit, and a personal computer configured to communicate with the IC tag via the readerwriter and to perform a recycle processing of the device unit. In second embodiment, memory requirements are reduced by selecting a TFC based on guaranteed rate transmission rates, QoS class, TBSS, and queue fill levels, without accommodating backlogs. Transmissions occur using the reserved resources.