Abstract: A reverse osmosis system for purifying water including an automated needle valve assembly adapted for controlling the fluid operating pressure at the reverse osmosis membrane unit so as to adjustably control the water pressure against the membrane unit. A direct current electric motor is connected to the valve assembly and adapted for adjusting the valve needle between a first needle position and a second increasingly open needle position. Opening the valve needle acts to increase the flow of water through a valve discharge port and thus relieving pressure against the membrane unit. A potentiometer is also coupled to the valve assembly and adapted for determining the needle position. A pressure sensor measures the system operating pressure. An electronic controller is electronically coupled to the pressure sensor, the potentiometer and the motor.

Abstract: Devices, computer readable media, and systems including program instructions are provided for advertising on mobile phones. A device embodiment includes a mobile phone with program instructions executable to display a single stream of advertising formed from a number of advertising channels, receive a change input for a particular change to the single stream of advertising, and change the single stream of advertising according to the change input.