Apparatus and methods are provided for cooling motors used to drive gas and air compressors. The method comprises prenatal andor postnatal administration of a therapeutically effective amount of LGG. The drive shaft has a second screwthread which is arranged in a screwthreaded bore in the main tool body, such that the two screwthreads differ in respect of their pitch andor direction of rotation. The anisotropic etching results in a fin formed from the second semiconductor material and an exposed region of first semiconductor material underlying the fin. If the call is disconnected prior to the account balance being depleted, the invention immediately decrements the wireless subscriber’s account and releases the trunks. In accordance with a preferred embodiment, the spacers may be formed utilizing flow-fill deposition of a wet film in the form of a precursor such as silicon dioxide.