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Abstract The purpose of this study is to systematically assess the level and spectral distribution of low frequency (LF) sounds in dwellings. Measurements of broad and narrow band sound levels have been made in 36 Dutch dwellings in 1998. In 19 dwellings there were complaints about LF noise, in...
Abstract This paper addresses the issue of ultra-low frequency sound waves inside railway tunnels. The infrasound spectrum shows two main features: 1) a Kolmogoroff −5/3 slope above a critical frequency and a flat spectrum below; 2) distinct resonance peaks at the tunnel axial eigenmode...
Abstract To study the changes of blood-brain barrier (BBB) permeability and the heat shock protein 70(HSP70) after infrasonic damage, 40 SD rats were randomized into control, infrasonic damage 1 time, 7 times and 14 times groups. 8Hz 120dB Infrasound of 8Hz frequency and 120dB level was applied...
The study in the present paper was carried out when a fabricated cab was added to an agricultural tractor. The fabricated cab was selected after a comprehensive series of experimental tests carried out on a variety of cab constructions. The noise measurements were taken from the experimental...
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