title: The effect of obstructions and thermals in laminar-flow systems.
abstract: The influence of obstructions and thermals on the air flow in unidirectional or laminar flow systems was studied with special reference to operating rooms. It was shown that thermals induced in the operating rooms would have little influence in the normal laminar-flow system. The importance however of obstructions such as operating lamps and personnel was shown.
mesh_terms: D000389:Air Conditioning; D000392:Air Movements; D006358:Hot Temperature; D008029:Lighting; D008722:Methods; D009873:Operating Rooms; D010781:Photography; D012906:Smoke; D014691:Ventilation
chemical_list: D012906:Smoke