Abstract: A system and method for switching between flows of water solutions passed in groups of blocks of membrane pressure vessels arranged in parallel in a tapered flow system, wherein the system comprises a system inlet feed line, a system outlet flow line, high pressure booster pumps configured to provide a high pressure feed stream to the system; blocks of membrane pressure vessels arrayed in parallel, and a first and second bypass line each parallel to said blocks.

Abstract: A system and method for switching between flows of water solutions passed in groups of blocks of membrane pressure vessels arranged in parallel in a tapered flow system, wherein the system comprises a system inlet feed line, a system outlet flow line, high pressure booster pumps configured to provide a high pressure feed stream to the system; blocks of membrane pressure vessels arrayed in parallel, and a first and second bypass line each parallel to said blocks.

Abstract: A method of implementing a hybrid broadcast-unicast television is provided herein. The method may include: broadcasting a stream of a user-requested content over a digital television (DTV) channel; monitoring at least one qualitative criterion of the stream broadcasted over the DTV channel; in case that the monitored qualitative criterion is below a predefined threshold, switching said user to an internet protocol (IP) channel that corresponds to same stream of said DTV channel; and in a case that after switching to the IP channel, the monitored qualitative criterion becomes equal to or above said predefined threshold, switching back said user to said DTV channel, wherein the switching from the IP channel to the DTV channel comprises buffering the stream of the DTV channel through the IP channel so as to preserve continuity of the stream received by the user.

Abstract: A system for recirculating lock water includes a sealable storage area located near a lock for receiving water from the lock. The storage area is large enough to house the lock water with excess space between a maximum water level and the ceiling. The system also includes at least one compressor connected to the storage area to create a vacuum to withdraw the water from the lock into the storage area.

Abstract: A system for recirculating lock water includes a sealable storage area located near a lock for receiving water from the lock. The storage area is large enough to house the lock water with excess space between a maximum water level and the ceiling. The system also includes at least one compressor connected to the storage area to create a vacuum to withdraw the water from the lock into the storage area.