نتایج جستجو برای: acoustic noise
تعداد نتایج: 271819 فیلتر نتایج به سال:
Objective To determine average acoustic reflex thresholds in geriatric groups by assessing ipsilateral and contralateral acoustic reflex and reflex decay tests. Methods A total of 25 elders between ages 65-84 years (74.3±5.4) and 25 individuals between ages 18-45 years (30.4±4.2) were recruited for the study. After ear, nose, and throat examination, ipsilateral and contralateral acoustic refl...
Abstract The large acoustic noise of 80-110 dB during magnetic resonance imaging (MRI) scanning harms patients’ comfort and health. can be reduced by hardware modification or active control, but these methods are expensive, difficult, not very effective. In this study, a sequence optimization method is used to mitigate the problem while maintaining image quality. 4 th order polynomial function ...
Anthropogenic disturbance has been pointed to as one of the major causes of the world´s biodiversity crisis. Among them, noise pollution is a potential underestimated threat, projected to increase in the next decades accompanying urban expansion. Rising levels of noise pollution may result in negative impacts on species highly dependent on acoustic communication. Amphibians have long served as ...
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