A method for automatically controlling the level of dissolved oxygen in water, including the stops of mixing air or oxygen and nitrogen gas so as to be dissolved in retained water in a closed tank. A device has hardware, including a voice coil motor for receiving a VCM command signal and a correction circuit, for obtaining the VCM command signal and a coil voltage measurement from the hardware, where the correction circuit removes a transient voltage measurement due to a change in the VCM command signal from the coil voltage measurement and outputs an estimated BEMF measurement. Vapor from the working liquid will be transferred to the gas stream as it moves through the saturator. For example, the promotional program can be a sweepstakes and the task may be determining of the consumer is an instant winner. If no key is detected, the file directory is identified as unsplittable. A phenyl group, bonded to a silicon atom, is introduced into silicon dioxide in the organic-containing silicon dioxide.