The present invention provides an apparatus for improving the fuel economy of a vehicle. The invention is based on the development of functional site descriptors for discrete protein biological functions. Third wires are respectively bonded to the panel and positioned parallel to and adjacent to the first individual wires of the first array. Particular, most of the polysiloxane remains on the surface of the tissue product as opposed to migrating to the center of the sheet. Each test fixture segment has an outer 2-port reference plane and an inner 2-port reference plane.