Methods and apparatus for communicating and utilizing persistent allocation of uplink resources are described herein. The catalyst can be used in hydrogenations. The magnetic circuit arrangement includes an anode arrangement, a receiving frame which extends around an edge of the target body and is electrically insulated with respect thereto. The framework produces the non-circular socket, which may have a series of tiers. The composition may be cured and is particularly suitable for use as a surface release layer for fusing systems used in electrostatographic imaging systems.