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The antibacterial composite chitosan/poly(vinyl pyrrolidone)/Ag/Fe3O4 was prepared to treat drinking water. The results show that the optimal conditions for preparing composite with the best antibacterial activity are C(AgNO3) = 0.8%, C(chitosan) = 1.5%, C(poly(vinyl pyrrolidone)) = 2%, and C(Fe3O4) = 2.5%. The FT‐IR spectrum suggests that hydrogen bands are formed between acetyl in PVP and hydroxyl...
An online monitoring, analysis, and evaluation system of electric vehicle (EV) charging station is designed and developed. The system structure is based on PCI bus with multi-DSP design, and its hardware consists of multi-DSP acquisition terminal, vehicular terminal, Industrial PC (IPC), FPGA and PCI interface. The voltage and current of the point of common coupling (PCC) of charging station and chargers...
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