The present invention relates generally to nutritive medium, medium supplement, media subgroup and buffer formulations. A modulator is arranged to accept information and encode that information in an alternating signal containing repeated rising and falling edges, by way of the time between consecutive rising or consecutive falling edges. Multi-component catalytic systems using aryl titanates allow increased versatility in applications such as liquid molding. The present invention provides a large number of user desirable combinations of footwear with SDA and innerliners that can be created by using a footwear system comprised of footwear with at least one SDA and a system of specifically designed innerliners.