An adjustable rip fence for a machine tool has a fence which is movable with respect to the cutting tool due to a rack and pinion. The predistorter is operative to predistort an input signal according to predistortion control parameters at a given sampling rate. Upon receipt of advertising content, the viewer device identifies advertisements matching the viewer characteristics. The press may be reversed between production cycles. The device and method described are able to perform adsorption of components of interest from a biological system in high volume. The blend acts as a scaffold to support blood vessel walls during vascular healing and undergoes biodegradation in vivo after vascular healing is complete.