The disclosure is related to group communications over multimedia broadcastmulticast services. The system described herein is particularly useful for water recovery in brackish ecosystems and is unique in that important features include recycling, regeneration, and recovery of key components, thereby reducing costs and waste products. The item includes content provided by a second user. The image signal processing section performs an image processing for correcting the image signals with respect to the distortion. To complete the cells, the conducting and insulating layers 305, 304, 303 are etched sequentially to expose the field emitting layer 302 in the cells, and remaining areas of the photoresist layer 306 are removed.