A rotatable vacuum chamber receives an optical connector having an output face on which an optical gel is applied substantially without entrapped air. The sheet is preferably self-adhering, and may be applied to an affected area of skin for at least 12 hours per day and for a time period sufficient to either prevent the formation of a scar or minimize the appearance of an existing scar. This lubricating device sufficiently feeds oil to even the cylinder head side of the engine while avoiding increased pressure loss of the oil. The second level cache has a relaxed inclusion property, the second-level cache being logically shared by the plurality of processor cores. , to an aqueous or heated physiological environment, immediately or shortly after completing a medical procedure via the puncture, e.