The present invention proposes methods for obtaining concentrated polyphenol extracts resulting from the stirring process, through a step in which a partially purified beer is placed into contact with a resin that adsorbs the polyphenols, followed by a step in which the polyphenols adsorbed onto said resin are recovered. In a method embodying the invention, a mixed video image that includes a video image from a video source and at least one OSD block is generated. Unlike paraffin tissue arrays which can be problematic for immunohistochemistry and for RNA in situ hybridization analyses, the disclosed methods allow optimal evaluation by each technique and uniform fixation across the array panel. Other aspects include a logical switch for logical and physical ports, and packet queues for each connection and for each logical port.