Apparatus for forming and enlarging a percutaneous penetration are disclosed. The storage descriptors indicate available storage resource capabilities and storage resource requirements for particular applications or types of applications using a common set of metrics. The hook may include an enlarged beaded end which may be used directly with some fasteners or clamps, or with a clip to form a loop. If playback is feasible using a higher bit rate, then the content player may adapt the bit rate upward. Post calcining is carried out to inorganic compound materials obtained by the organic substance removing treatment. In accordance with an aspect of the present invention, a method for detecting metal contamination of a silicon chip comprises implanting arsenic ions into the silicon chip, and etching the silicon chip with a chemical etching solution.