نتایج جستجو برای: ear protective devices
تعداد نتایج: 350712 فیلتر نتایج به سال:
Studies of signal transmission in the auditory system continue in cooperation with the Eaton-Peabody Laboratory for Auditory Physiology at the Massachusetts Eye and Ear Infirmary. The goals of this program are to determine the anatomical structures and physiological mechanisms that underlie vertebrate hearing and to apply that knowledge where possible to clinical problems. Studies of cochlear i...
BACKGROUND The effects of alcohol on morbidity and mortality following motor vehicle accidents (MVAs) are controversial. This study was performed to address the effect of alcohol on in-hospital mortality for drivers in MVAs admitted to a trauma center before and after controlling for injury severity, safety device use, and patient demographics. METHODS A retrospective study was performed usin...
The aim of the present study was to analyse the adequacy of hearing protection devices (HPDs) by applying and comparing different methods for the estimation of effective exposure levels. This comparison involved the attenuation data of 50 HPDs (ear muffs and ear plugs), as well as 11 types of noise spectra and 4 methods. The application of the several methods considered and the comparison of th...
in this paper, simultaneous placement of distributed generation, capacitor bank and protective devices are utilized to improve the efficiency of the distribution network. the objectives of the problem are reduction of active and reactive power losses, improvement of voltage profile and reliability indices and increasing distribution companies’ profit. the combination of firefly algorithm, parti...
introduction: tympanoplasty is the standard and well established procedure for closure of tympanic membrane perforations .this paper compares the results of tympanoplasty in terms of hearing improvement and graft incorporation in patients with chronic perforation of the tympanic membrane between two groups with and without active drainage at the time of surgery. materials and methods: sixty re...
introduction: nodular fasciitis is described as a benign reactive proliferation of myofibroblasts. due to its rapid-growing nature, a precise clinical diagnosis is difficult and the condition is frequently misdiagnosed as malignant lesions. case report: in this study, we present the case of a young woman with an auricular nodular fasciitis as an example of one of the rarest sites of this tumo...
ear candling is an alternative medicine practice alleged to enhance general health by putting an end of a hollow candle in the ear canal and lighting up the other end of it. it also is advertised for cerumen and debris (bacteria and fungi) removal. ear candling is claimed to create negative pressure for drawing cerumen from the ear and to benefit the ears in many ways. it is however not free of...
Many studies have demonstrated the benefits of wearable vibration devices for walking navigation (Tsukada and Yasumura, 2004). Despite the potential benefits, suitable body parts for wearable vibration devices have not been defined or evaluated until now. We conducted three experiments to identify suitable body parts in terms of perceivability, wearability and user body location preferences for...
Earables have emerged as a unique platform for ubiquitous computing by augmenting ear-worn devices with state-of-the-art sensing. This new has spurred wealth of research exploring what can be detected on wearable, small form factor. As sensing platform, the ears are less susceptible to motion artifacts and located in close proximity number important anatomical structures including brain, blood ...
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