The availability of requested network resources in a network of servers, each having associated network-servable resources of a specific kind is maintained. A process for pyrolyzing hydrocarbonaceous material includes charging a reactor with a feed material comprising hydrocarbonaceous material, heating the feed material, and collecting liquid product from the reactor which is anaerobic in operation. Each neck ring body is of die-formed powder metal construction and is set around the associated insert. The transaction engine receives as its input decoded first party’s financial transaction card information from the decoding engine, and serves as an intermediary between the first party and a second party, so that the first party does not have to share hisher financial transaction card information with the second party. In one embodiment, a system of the present invention includes a polarization separating sub-system a polarization recombining sub-system and one or more switchable volume diffraction gratings to provide polarization insensitive low loss, reliable variable optical attenuators and 1\xd72 optical switches. By the method a furrow is cut having a substantial transverse component in an operation with a substantial forward component.