A ball drop wellhead control apparatus provides a ball controller between a frac ball drop or frac ball injector used to drop frac balls into a frac fluid stream being pumped into a subterranean well. Application of the present invention may alleviate the oxygen vacancy in a high-k gate dielectric in a pMOS device, and further avoid the problem of EOT growth of an nMOS device during the high-temperature thermal treatment process, and therefore effectively improve the overall performance of the high-k gate dielectric CMOS device. A calculation circuit coupled to the plurality of accelerometers receives output signals therefrom and converts the measured acceleration to displacement signals indicative of displacement of the body in a coordinate system. The cassette includes a locking finger having a retention feature for engaging a retention feature integral with the surgical pump. Apparatus, methods, andor processes used in treating a subsurface or hydrocarbon containing formation are described. In certain embodiments, the water-soluble hydrophobically modified polymer or the hydrophilically modified water-soluble polymer may include a polymer backbone that comprises polar heteroatoms.