A sex enhancer is a flexible and deformable fluid-filled enclosure with a smooth exterior surface having a rounded shape. The shoulder belt section includes an inflation section that is inflated by a supply of gas and in which a portion on a head side of the passenger with respect to a center section in a width direction of the shoulder belt section is deployed to be larger than a portion on an opposite side from the head side. The first driven shaft is rotatably connected to the housing and operably coupled to the at least one driven ring gear. For instance, a sequence employed to yield the reference signal can be generated andor chosen as a function of the selected type of waveform. A distillation stream is withdrawn from the column below the feed point of the second stream and is then directed into heat exchange relation with the tower overhead vapor stream to cool the distillation stream and condense at least a part of it, forming a condensed stream.