A new and distinct cultivar of Pentas plant named \u2018DPRG\u2019, characterized by its compact, upright and mounded growth habit; freely branching habit; freely flowering habit; double deep red-colored flowers that are held above the foliage on strong peduncles; and good garden performance. In an optimistic concurrency embodiment, when an object is to be updated, the database system is checked to determine whether any data related to fields of the object have changed since the object was read. The first-layer external layer ceramic green sheet uses a sterically hindered dispersing agent, such as an aryl ether polymer, as a dispersing agent. Each aligner comprises first, second and third shifting means for shifting said primary data bits to respectively generate respective data bits delayed of one, two and two and half cycles and a multiplexor receiving said primary and delayed data bits under the control of three control signals of a first type, realign0 and realign1) to generate a pair of aligned data bits & tdat_desk). An airwater separating device in the air flow path is upstream of the suction section for separating and collecting water condensed from air sucked therethrough by the negative pressure.