Methods for preparing a biological tissue specimen for examination, such as microscopic examination, that involves applying acoustic pressure waveshock wave energy to the tissue specimen. More specifically, the present invention provides methods and apparatus for storing and retrieving business contact information, including dynamic business cards in an internet-accessible database of a computer system. One turbulator design has a number of flanges extending at a non-normal angle to a central web. The electrode of the semiconductor chip is electrically connected to the connecting pattern via wires through the elongate opening.