Interestingly, Ver concluded that the peak attenuation
at low frequency did not correspond to the fundamental vibrational resonances of the duct panels.
The period was chosen based on preliminary tests with our methodology : it was one of those showing better repeatability and peak attenuation.
Caption: FIGURE 8: Example of the peak attenuation with the change in the refractive index of the medium (water with a variable percentage of ethylene glycol), for a grating with 2.4 mm length.
The following peak attenuation curve is proposed for quantitative analysis of the MS signal attenuation.
Figure 7(a) shows the distribution of the fitting precision of the following peak attenuation curve.
(1) The following peak attenuation curves of the mining MS and blasting signals satisfy the power function, which makes it reasonable to quantify the attenuation and stability of the signals utilizing the corresponding fitting coefficient and fitting precision values.
Caption: FIGURE 5: Following peak attenuation curve of typical coal mining MS signal.
For optimum imaging of the liver during the portal phase when using helical CT, scanning should begin 60 seconds after the administration of the IV contrast. This interval permits peak attenuation
of the liver to be achieved and also maximizes liver-to-lesion attenuation differences.
Rooms E and D required a peak attenuation
in the 125-Hz octave band.