A corrosion resistant aluminum alloy has controlled amounts of iron, manganese, chromium, and titanium along with levels of copper, silicon, nickel, and no more than impurity levels of zinc. The grafting of adhesion molecules to collagen matrices renders same suitable for use in vascular and cardiothoracic surgerymedicine, as well as in cell therapy for the heart and in artificial heart muscle engineering. Each comparator stage is configured to perform a comparison on the input signal and provide an output signal based on the comparison. The document properties can indicate a size of the document, an age of the document, and a time associated with the document. The mechanism includes a plurality of hoop rings which are spaced axially within the dryer, each hoop ring being disposed normal to an axis of rotation of the dryer.