An optical display system includes: a light source; a display panel including multiple pixel regions, each of which can modulate light; and an optical shifter, which is disposed so as to receive an outgoing light ray of the display panel and optically shift an image on the display panel on a frame-by-frame basis. The manufacturing method of the photocatalytic nanopowders is achieved by the non-transferred DC plasma apparatus in an atmosphere of nitrogen at around 1 atm. The method enables a design engineer to visualize the performance of any wireless communication system as a three-dimensional region of fluctuating elevation, color, or other aesthetic characteristics with fully selectable display parameters, overlaid with the three-dimensional site-specific computer model for which the performance prediction was carried out. The first array of slots and the second array of slots are configured to receive the first shield panel and the second shield panel such that the second shield panel is spaced apart from the first shield panel to form a first trough sized to fit a limb of a patient. The method includes automatically mobilizing the occlusion from the breathing tube by regulating an inspiratory flow, an expiratory flow, or a combination thereof, where the breathing tube is configured to operationally couple a patient to a ventilation system, and where the ventilation system is configured to provide artificial respiration to the patient.