This invention relates to a process of treating a lignocellulosic material to produce bio-ethanol. The arms can be disposed to apply an outward lateral pressure against the walls of the cervix, thereby engaging the cervix without the need for physical penetration, gripping, or other attachment of the device to the cervical tissue. A diffraction ring is calculated around each of the elements to identify sidelobe interference zones and intesections of diffraction rings are located. The absorbent product may also comprise one or more removable trim regions for sealing and shaping the absorbent product. Upon withdrawal of the plunger, frictional contact imparted by the plunger seal causes the tubular element to slide away from sealing engagement with the barrel into a second position within the guide.