Material of piezoelectric ceramic compound of three components of PbO3\u2014PbTiO3\u2014PbZrO3 expressed by a basic formula of PbaZrTixO3 is provided. The bottom layer includes a number of strips secured to the bottom of the top layer. The most potent inhibitor, purvalanol B, binds with a 30-fold greater affinity than the known CDK2 inhibitor, flavopiridol. The nose is shiftable between differently configured conditions, including a first condition for guiding a fastener driven by the output shaft, and a second condition for releasing a fastener that jams when the nose is in the first condition. The portable device further includes image generation logic that is configured to obtain product information for the identified product from the databases and present the product information on the display screen of the portable device.