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At present, the wind and solar hybrid street lamps features wide distribution, hard to maintain, and impossible for real-time control, thus the wireless sensor network is applied to the wind and solar hybrid street lamps. In this paper the hardware system of the wireless monitoring system is produced, here ZigBee technology is used to realize the communication between the street lamps, at the same...
The polymer UHMWPE is widely applied as bearing element at acetabular side in total hip arthroplasty. In some designs, a metal backed is placed between the polymer and bone. Today, wear of the polymer is the major cause of revisions. In some extreme cases, the metallic cephalic component and the metal backed experience contact wear promoting wear debris, which has catastrophic consequences. In this...
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