Abstract: Embodiments of the present invention are directed to a digital publication system configured to operate in conjunction with a communication network having a content provider system, and a host device operated by a user. The digital publication system comprises an authentication system, a data distribution system and a secure processing system, wherein the authentication system is configured to provide authorization for the user to access the digital publication system. The data distribution system further comprises a data locator and a data request manager, wherein the data locator and data request manager operate in conjunction with each other to provide requested data to the host device. The secure processing system comprises a protocol application for securing the transmission of some user information to and from the host device, wherein securing the transmission.

Abstract: A filtration apparatus includes an array of filters arranged in parallel about a rotatable assembly 24 for successively backwashing each of the filter elements 19 within the array. The rotatable assembly includes a connector bachwash shoe 26 and a cage having an annular circlip 33 supporting a valve element 31 therein. During normal filtration, water flows up the inlet tube 11, through a respective opening 17 into filtration chamber 13, and then through a respective filter element. The filtrate flows upwardly into plenum 16 and out through outlet 14. In a backwashing mode, the assembly 24 is rotated by a moving means that includes shaft 22 driven by a stepper motor 34 such that the valve element is radially unseated out of the backwash outlet 30. Each filter element is then backwashed in turn as an L-shaped passage 27 of the bachwash shoe is aligned with a respective opening 17 allowing backwash fluid to flow out opening 28a to the backwash outlet.