A bipolar plate assembly for a fuel cell is provided. The speech processor includes an input for receiving speech files from a plurality of users and storage means for storing the received speech files until such a time that they are forwarded to a selected speech recognition engine for processing. The FPS of the present invention was found to provide unexpected beneficial performance properties when added as a rheology modifier to a paper coating containing standard binders, pigment, and water. The present invention further provides neural progenitor cells, differentiated neural cells, and uses of same. The lithium salt comprises lithium bisimide.