نتایج جستجو برای: noise cancelation
تعداد نتایج: 195269 فیلتر نتایج به سال:
OBJECTIVE To determine whether visual evoked magnetic fields (VEFs) elicited by right and left hemifield stimulation differ in patients with unilateral spatial neglect (USN) that results from cerebrovascular accident. METHODS Pattern-reversal stimulation of the right and left hemifield was performed in three patients with left USN. Magnetoencephalography (MEG) was recorded using a 160-channel...
Acoustic metamaterials allow for creating selective pass- and stop-bands on the frequency spectrum. We demonstrate possibility of designing acoustic as core-shell 2D-phononic media with an extremely simple morphology, spectrum which contains many real-time tunable bandgaps. The connected shells such form a grid square cells filled nuclei partitionable into two subsystems. Both subsystems are ch...
in recent years noise has been well known as an environmental pollution. particularly its effects will be more serious in some environments including hospitals which patients need a calm and peaceful condition. this study aims to evaluate hospitals noise pollution level. this study is a cross-sectional study. noise measurements were made in all hospital wards in a workday and weekend from 8 to ...
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