The invention is directed to methods involving rewetting of expandable polymers with a wettable liquid to allow for enhanced expansion at or below room temperature without breakage, and in some cases, allows one to achieve a greater expansion ratio than that allowed at elevated temperatures using known methods. A transmission speed of the local FC client at a local ingress transport interface is detected. The response of the semiconductor wafer to the flow of DC current is measured for the presence of an AC voltage component superimposed on the DC voltage. In one implementation, the set of identified auctions can be used as an input to an auction optimization system that, for example, computes a set of suggested auction parameters for a contemplated auction, andor computes one or more predicted behavioral attributes for a contemplated auction. The collar has a central recess of a diameter less than the diameter of the collar. The diaphragm includes an end wall of a cup-shaped element, having an outer peripheral edge of which is normally pressed in seal contact against an annular valve seat with a conical surface of the first tubular connector under an axial thrust exerted by a side wall of the cup-shaped element.