Journal of Sound and VibrationLjunggren, F., Wang, J. y Agren, A. (2007). Human vibration perception from single- and dual-frequency components. Journal of Sound and Vibration 300 13-24Ljunggren F., Wang J., Agren A. (2007), Human vibration perception from single-and dual-frequency ...
Determine the frequency content of measured vibration levels by configuring the HVM200 with the optional IEC 61260 class 1 compliant 1/1 and 1/3 octave filters (0.5 Hz to 2000 Hz and 0.4 Hz to 2500 Hz respectively). Data can then be transferred for reporting or further analysis using USB,...
Effects of low-frequency vibration on human term fetuses. Thirteen healthy pregnant women between 37 and 41 weeks' gestational age were studied to examine effects of a 5-second external vibratory stimulus (100 Hz,... R Gagnon,J Foreman,C Hunse,... - 《American Journal of Obstetrics & ...
It is shown that there is a large statistical difference between the HHW values of a human target and the mechanical vibration of digging. The calculation of HHW values is independent of the system’s vibration amplitude and frequency. It significantly satisfies the distinction environment in post...
Frequency is the number of cycles, or complete vibration experienced at each point per unit. Frequency is measured in hertz. The hertz, Hz, is the derived SI unit of frequency. The frequency of a sound wave determines its tone and pitch. The frequency range of a young person is about 20...
The modulus from this OCE measurement is obtained from a specific strain rate determined by vibration frequency. The absolute modulus may be different from conventional quasi-static modulus which is obtained at a low strain rate. Another limitation of our study arises from the vaginal delivery ...
Benjamini-Hochberg adjusted t-test p-values are reported. Data from the cochlear apex and base are analyzed separately because they correspond to different frequency regions. IHC counts per 100 μm length showed VS8 secretions (from a tumour associated with anacusis) leading to significant IHC ...
Once the firing rate of the control unit was constant, vibration of the TA tendon recruited a second 'test' unit which continued to fire after the vibration (i.e. synaptic input) was removed, even though the firing rate of the control unit (and thus, the common drive) remained the same...
In this paper, a lumped-parameter biodynamic model of a seated human body (SHB) exposed to low frequency whole-body vibration in both vertical and fore-and-aft directions is developed. The model is based on all three types of biodynamic functions: seatto-head transmissibility (STHT), driving...
The microtome was pre-set to 380 μm cutting thickness, 0.02–0.03 mm/s advance speed, 2 mm horizontal vibration amplitude and 80 Hz vibration frequency. The microtome’s z-axis vibration was also calibrated prior to each experiment with the ceramic cutting blade to <0.5 μm...