Two concentration techniques, adsorption and electrodialysis, are combined to enrich lithium ions in brine from a level of several ppm to about 1. MEANS FOR SOLVING PROBLEMS A knee-restraining airbag device has an inflator, the airbag, an aesthetically designed cover installed at the lower part of an interior article ahead, in the front-rear direction of a vehicle, of an seated occupant, and a case installed on the opposite side of the aesthetically designed cover from the seated occupant and forming a space. Removal of the 4-hydroxyl group from the resulting tertiary benzylic alcohols is effected by tri-n-butyltin hydride and trifluoroacetic acid in a completely stereoselective manner, resulting in hydride delivery exclusively from the face. For petroleum products containing little, if any, wax, additional wax may be added and recycled back for further use in removing oils from the petroleum product. The RFID scanner can also be connected to a computer or computer network to retrieve additional information from a central database or to further disseminate the information contained on the RFID tag. In another embodiment, the gaming device holds one of the reels stationary when a wild symbol is indicated on a payline associated with the reels the award amounts associated with any indicated winning symbol combinations on the payline are less than a designated award value.