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This work investigated the antimicroorganism activities of ZnO, TiO2, MgO and SiO2 nanoparticles suspensions at different pH values. In this work, E. coli was used as model bacteria to test the antimicroorganism activities of these nanoparticles suspensions. Growth curves investigation with and without these nanoparticles suspensions was used to examine the antimicroorganism activities. The results...
The effects of various inorganic anions (SO42-, NO3-, H2PO4-, HCO3-, CO32-, F-, Cl-, Br- and I-) on the photocatalytic degradation of phenol were investigated under UV light irradiation. In present work, low initial pH value in the presence of H2PO4- increased the photocatalytic degradation efficiency of TiO2, high initial pH value in the presence of HCO3-, CO32- and F- decreased the photocatalytic...
Considering accelerometer failure of single electromagnet suspension system of maglev train, a sensor-fault diagnosis system based on unscented Kalman filter is designed. According to the results of fault detection and diagnosis on line, a improved PID regulator designed off line with tracking differentiators is adopted to tolerate the accelerometer failure. The simulation indicates that the fault...
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