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The mechanism of Pb (II) biosorption by Saccharmyces Cerevisiae is investigated by scanning electron microscopy-energy dispersive x-ray (SEM-EDX) sepectroscopy,fourier transform infrared (FTIR) spectroscopy and x-ray photoelectron spectroscopy (XPS).The SEM figures show that the shapes of Saccharomyces Cerevisiae cells doesn’t obviously change after(More)
The ultrafine grained 2205 duplex stainless steel was obtained by cold rolling and annealing. The tensile properties were investigated at room temperature. Comparing with coarse grained stainless steel, ultrafine grained sample showed higher strength and plasticity. In addition, grain size changed deformation orientation. The strain induced α'-martensite(More)
The corrosion behaviors of NiTi shape memory alloy in NaCl solution, H2SO4 solution and borate buffer solution were investigated. It was found that TiO2 in passive film improved the corrosion resistance of NiTi shape memory. However, low corrosion resistance of passive film was observed in low pH value acidic solution due to TiO2 dissolution. Moreover, the(More)
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