An improved locking mechanism assembly that is within a cantilevered stowable seat for use in a vehicle in order to provide passenger seating or a space for a wheelchair or for storage of various articles. The apparatus has a width equal to the minimum allowable width of the lacrosse stick head, and a length perpendicular to the width. Considering the difficulties in purifying natural furan fatty acids because of easy attack by peroxyl radicals and small quantity and the complicated multiple steps for chemical synthesis, the present disclosure provides a useful way to produce the biologically activity F-acid cost-effectively in large scale. The filter may be, for example, a band stop filter such as a parallel resonant circuit having a resonant frequency at or near an RF signal frequency. The local registers and global registers are addressed using register addresses in an address space that is separately defined for a register file segmentfunctional unit pair.