Disclosed herein is a channel plate for a fluid-based switch. According to one embodiment, a hard disk controllermultiprocessing unit calibrates a correction operational coefficient of a detected back electromotive force voltage before unloading. The guitar pick is magnetically held against a front magnetic surface of the flexible magnet and is thereby carried with the guitar, even when it is subject to relatively strong forces of accelerative motion. Upon the criteria of the contract not being met, the interaction between the components of the system is adapted to conform to the criteria. A cylinder block, an engine cooling system, and a method of cooling an engine are also disclosed. The lubricant composition in this instance comprises a superabsorbent polymer combined with a material for decreasing friction between moving surfaces, wherein the material for decreasing friction comprises a petroleum lubricant, water, synthetic lubricant, grease, solid lubricant or metal working lubricant, and optionally an additive.