公共衛生學系;Department of Public HealthPALMES, E.D.E.D.PALMESWANG, CHIU-SENCHIU-SENWANG2008-07-302018-06-292008-07-302018-06-291971http://ntur.lib.ntu.edu.tw//handle/246246/80921Single breath studies designed to measure deposition of monodisperse aerosols in human subjects required specialized apparatus for the measurement of inhaled and exhaled aerosol. An apparatus was constructed consisting of a three -way valve system and anesthesia bags to contain aerosol before inhalation and after exhalation. The bags were enclosed in boxes which were connected to a spirometer which recorded volumes. The entire system was automated so that the subject inhaled (mouth breathing) a preset volume of aerosol and exhaled a preset, larger volume of air from his lungs. Volumes were controlled by a rider on the spirometer wire which activated a group of solenoid driven valves. Quantities of aerosol in the bags were determined by integrating the photocurrent from an aerosol photometer when a bag was emptied through the photometer.#B0171026en-US氣膠吸入AEROSOL INHALATIONjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/80921/1/(1995)Sleep+Problems+of+Junior+High+School+Students+in+Taipei+(Sleep).pdf