exhaust gas recirculation) equipment to existing engines.
lymphocyte recirculation to host tissues.
The recirculation system had to be modified to prevent pigmentation being carried over by adding a hydraulic needle valve.
Water recirculation technology provides optimal growing conditions for livestock, to prevent both disease and the discharge of wastes back to the environment.
This makes recirculation of unreacted sorbent easier, resulting in improved sorbent utilization.