منابع مشابه
Investigation on simulation of train loading on prestressed concrete sleepers
Railway concrete sleepers have been developed and utilized in railway industry for over 50 years. Cyclic loading because of vibration on sleepers due to the train loading and the velocity of train itself and also a small percentage of bad wheels, can eventually lead to a crack network and failure of component. The objective of this study is to investigate the load carrying capacity of the selec...
متن کاملIn-situ audiometry: How close is it to conventional audiometry?
Technology in the hearing aid industry is ever changing. One of the many features that may improve accuracy of hearing aid fi ttings and patients ’ satisfaction is the inception of in-situ audiometry, which allows the clinician to measure hearing thresholds with a hearing aid in the patient ’ s ear. Objective : The present study aimed to investigate the validity of in-situ audiometry measured w...
متن کاملAudiometry screening and interpretation.
The prevalence of hearing loss varies with age, affecting at least 25 percent of patients older than 50 years and more than 50 percent of those older than 80 years. Adolescents and young adults represent groups in which the prevalence of hearing loss is increasing and may therefore benefit from screening. If offered, screening can be performed periodically by asking the patient or family if the...
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ژورنال
عنوان ژورنال: Nippon Jibiinkoka Gakkai Kaiho
سال: 1957
ISSN: 0030-6622,1883-0854
DOI: 10.3950/jibiinkoka.60.558