ANALYTIC SUBJECT INDEX OF ACOUSTICAL PAPERS IN CHINA

摘要

0.General;1.Physical Acoustics;2.Underwater Sound;3.Mechanical Vibration and Shock;4.Noise and Four groups of guinea pigs were exposed to bud sound(3h,1kHz.125 dB SPL).One group inhaled airas control(C-group),and the other groups ingaled2 ATA hyperbaric oxygen(HBO)for30 minuteseach time.These three groups were called,respectively,prevention group(P-group)inhaling HBO oncebefore exposure,treatment group(T-group)inhaling HBO daily for14 days after exposure,andprevention-treatment group(PT-group)inhaling HBO once before exposure and once a day for14 days af-ter exposure.After exposure.the threshold of the cortical auditory potential evoked by click rose in all ani-mals.Hearing loss of C-group was the severest,up to70dB,while those of P-group and PT-group where53dB and51dB,respectively(p0.01,compared with that of C-group).Hearing loss of T-group was68.5dB.Smilar phenomena were found in the measurement by tone-burst.The above aspects lasted21 days until these animals were killed.The average trauma length