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pp.445-447
Published Date 1952/10/20
DOI https://doi.org/10.11477/mf.1492200762

INOUYE AND HARASHIMA deviseb an anemometer for measuring the amount of air that passes through the nasal cavity. The prin-ciple with which the measurement is made is by determining the velocity of air at the posteri-or choana by application of hot-wire anemometer and pressure of the respired air with a U-tube baromater with figures thusly obtained the coefficient of the loss of head is calculated by Bernelli's formula. The valne of such a calcula-tion in a normal person is for inspired air 7.74 to 12.02 and, for expired air from 12.58 to 15.46.


Copyright © 1952, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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