An isolated compound of Formula I and salts thereof are provided:wherein X is Cl or Br. The apparatus consists of a vertically oriented conveyance tube that directs the granular material into a groove formed by the apparatus by means of a knife mounted to the underside of a triangular configured bracket which also serves as the mounting structure. A controller controls a direction of orientation of the corresponding wheel via the corresponding electrical steering motor. There may also be a dielectric layer over the cap layer. A method for fabricating rotating drums. By acquiring IP threat information about IP addresses, including risk confidence levels, assigning weighting factor values corresponding to various characteristics of the IP addresses, and mathematically transforming the risk confidence levels using the weighting factor values, traffic from IP addresses posing unacceptable levels of risk is blocked.