The present invention relates to a method and a network coding node for resource allocation applicable to multi-directional network coding in an exchanging system. The method involves contacting a gas stream containing the target metals with reactive chemical species generated in a plasma device. The cytoprotective effect of the, unsaturated aryl sulfone allows the clinician to safely increasing the dosage of the anticancer chemotherapeutic. The exemplary equipment may also comprise a laser system that scans the backing surface before welding and corrects original tool path, in order to provide an offset tool path and precision alarm system to get a safe welding, avoiding tool collision with the backing. In instances where the monitored activity comprises outbound traffic, outbound data received via the interface may be buffered when at least one subcomponent of the PHY that is operable to support transmission of the outbound traffic is unavailable due to the power management operations.