A decanter centrifuge is disclosed for separating a liquid feed mixture into constituent parts. The semiconductor structure includes a semiconductor substrate; a first dielectric layer over the semiconductor substrate; a conductive wiring in the first dielectric layer; and a copper germanide nitride layer over the conductive wiring. The first embodiment is presented by assigning a first pair of the bit lines permuted with each other to create a non-neighboring bit line layout. Power is applied to a gear box mounted on upper end of said tongue extension frame which turns the pivot bar 180 degrees to place the sign at the top for display and the towbar with hitch means at the bottom. The bi-directional current source circuit selectively provides current in a first and second direction between the first and second terminals based on the first and second voltage.