A process for making nanofibers includes preparing a fluid suspension of fibers, shear refining the fibers to create fibrillated fibers, and subsequently closed channel refining or homogenizing the fibrillated fibers to detach nanofibers from the fibrillated fibers. A radio frequency shield is moveably interposable between the transmitter and one or more antennas and thereby attenuates the signal strength of the query message received at an antenna. The clock channels may be arranged logically and physically in n groups of m channels with delays associated with each n group according to the relative position of the n group within the sequence of the n groups. A third aspect of compensation involves discharge of gasses from the barrel upwardly through barrel ports and the chamber ports.