A power shaft including a belt retaining geometry is provided according to an embodiment of the invention. In one embodiment, the present invention provides a method of preventing or treating diabetes by administering a therapeutically effective inhibitor of ATP to a subject. The blade has either no sweep, or is swept backward in the region between the radial location rR0. A timing optimized gate configuration is provided from running an incremental static timing analysis of the near optimum gate configuration. heat treating the pre-agglomerated particles; e). An isolation device disposed within the housing may transmit electrical power from the power cord to the internal power lines while isolating PLC communications traffic on the internal power lines from PLC communications traffic on the power cord.