AN ALTERNATION OF THE THRESHOLD OF HEARING AND ITS IMPROVEMENT (OBSERVATION BY AIR CONDUCTION)

Nakao Hideo, Nishigohri Masashi, Iida Futoshi, Ohmori Masahiro

doi:10.11453/orltokyo1958.3.200

We paid our attention to the fact that meteorological conditions in the airplane are apt to cause Inflammation of upper respiratory truct and so that also brought a man to Aerotitis media and Aerosinusitis.<BR>We have investigated and studied the above point in the various steps......cin presure cabin or non-presure cabin and in winter or summer, in what meteorological conditions the airplains are, during the time of waiting for flyingoff, ascent, flying and desient.<BR>Consequently we noticed that meteorological change in the airplaine were more great than we had expected. And its also concerns with the fact airplaines fly in a short hour between the claimatically different regions.<BR>So that the crew and passengers, attacked by meteorological changes, expressly one who is meteorosensitive are easy to suffer from inflammation of upper respiratory tract and these make big sourses of barometric disease.<BR>To prevent this, crews must give attention to decrease the meteorogical changes and its influence on a person in the air-plaine. But, at the same time, from the view of human engineering, we are desirous to the improvement and studies of air-engineering hereafter.

AN ALTERNATION OF THE THRESHOLD OF HEARING AND ITS IMPROVEMENT (OBSERVATION BY AIR CONDUCTION)

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