Abstract: An actuation system including a gear assembly, a plurality of friction members, an outsole for an article of footwear and an actuator. The gear assembly having a plurality of gears and each friction member being coupled to a respective gear of the gear assembly and having a series of textured outer surfaces. The outsole having an inner portion, an outer surface, and a plurality of openings extending from the inner portion to the outer surface, each opening being configured to receive one or more friction members such that at least one textured outer surface of each friction member is exposed on the outer surface of the outsole. The actuator is configured to rotate one or more gears of the gear assembly such that each friction member rotates relative to the outsole.

Abstract: Disclosed herein is a method of converting waste, such as wet biomass, to a clean product and energy, including heat, and/or power. The disclosed method combines hydrothermal processing, also known as anaerobic hydrothermal carbonization, followed by wet air oxidation, adding sufficient oxygen to ensure rapid and complete destruction of organics.