A liquid crystal composition containing a polymerizable compound according to the present invention is used in a liquid crystal display element in which a liquid crystal alignment capability is provided through polymerization. A storage processor requests a key associated with a particular object ID associated with a particular device address range from a key server. Upon detection of a predetermined charge level of one of the rechargeable power supplies, a third charging current is provided to the first rechargeable power supply and a fourth charging current is provided to the second rechargeable power supply. The porous mineral beads can be filled with a polymer gel and used for adsorption and chromatography applications.