Methods for fabricating sub-lithographic, nanoscale linear microchannel arrays over surfaces without defined features utilizing self-assembling block copolymers, and films and devices formed from these methods are provided. The composition for decreasing the hardness of water of the present invention can decrease the hardness of hard water to a level capable of drinking on a simple and small scale level in an area without a large scale water-purifying facility. The sources of the cross-coupled transistors are respectively connected in series with a third transistor and a fourth transistor, and electrical current supply capability of the third and fourth transistors is controlled by a control voltage given to control electrodes of the third and fourth transistors. The active destage count is a current number of write requests issued to a virtual disk that have not yet been completed, and the virtual disk is a RAID group comprising one or more specific storage devices. An insulator film is formed so that the insulator film covers the source and drain electrodes and the semiconductor film. In particular, this disclosure proposes techniques that may lower the number contexts used in CABAC by up to 56.