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Rockbursts occur frequently and cause serious damage in deep tunnels. Microseismic (MS) source location is of great importance and forms the foundation of the MS monitoring technology used in tunnel rockburst hazard mechanism analysis. A highly accurate method for locating MS events that occur during rockburst development in tunnels is proposed here. An anisotropic velocity model, rockburst event...
This paper presents on-demand microbeads delivery system in a microfluidic chip by magnetically driven microtool (MMT). The four of horizontally arranged permanent magnets and the piezoelectric vibrator are used to actuate the Ni based microtool precisely in the chip. The MMT injects the beads mechanically to flow and then into ejection operation part. We succeeded in transferring microbeads one by...
We report on an experimental exploration of ex vivo measurements and real-time monitoring of the motions of heart wall for perfused rat hearts, by employing a surface-contact type of electromechanical probes based on piezoelectric transduction. In a hybrid experimental apparatus consisting of a conventional heart perfusion system and external electromechanical probing devices and circuitry, prototyped...
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