Up to 10 kHz the average depth per pulse remained unchanged and afterwards a slight increase was observed but this was accompanied by large uncertainties.
Actually, the diameter of the laser spot is in the range of 150 300 μm, with the mobile system used in this study, whereas its depth per pulse does not exceed a few micrometers, in the case of wall paintings [16].
In the same way, ablation depths per pulse at a given laser fluence and with the same film thickness showed no significant differences.
Unlike the Human League, shy Middlesex boy Gary Numan had nothing against guitars, and understood well how to blend electronics with post-punk's energy and alienation, and he anticipated the disorientating frequencies of techno and rave by adding sonar-depth bass pulses to the bass guitar lines.
In contrast, in the case of model A2 (left part in Figure 8b), which assumed the same P-wave velocity for the upper and lower oceanic crusts around the source depths, distinct pulse-like trapped P waves were significantly developed for all frequency bands.
Hence, to further extend the exploration depth, both the pulse moment intensity and the size of transmitter loop need to be increased simultaneously.
In the process of information transmission, the depth, pump pressure, pulse width, and flow valve open four factors together, because the depth and pump pressure by the engineering conditions, so the quantitative flow valve opening and pulse width interval is the important factors that should be identified before work.
The study contained a thorough visual inspection and recording of cracks, estimation of the crack depth using ultrasonic pulse velocity measurements, investigation for voids between the concrete floor and the underlying aggregate layer using the Impulse-Response method, concrete floor thickness estimation using the Impact-Echo method and concrete quality estimation using cores cutting.
Carefree bathers plunging into the oversize, hundred-foot-deep pool for a refreshing dip will find the water clear and the shadowy shapes gliding in the depths far below pulse quickening.
Instead of only monitoring the ablation depth, the laser pulses can be guided according to the thickness of the residual bone layer above the critical structure.
Moreover, from the relation, we found that the increase rate of exploration depth diminishes with the pulse moment increasing.
