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An investigation of radiated reliability of HBT and MOSFET which fabricated on 0.35 μm SiGe BiCMOS technology is presented under dose rates of 500 mGy(Si)/s and 1 mGy(Si)/s with a 60Co γ irradiation source. Gummel characteristics of SiGe HBT and transfer characteristics of MOSFET are measured before and after irradiation. Base current (IB), leakage current (IOFF) and threshold voltage (VTH) are extracted...
In order to increase the degradation efficiency of chlorpyrifos pesticides in soil, a organ phosphorous degrading condition was optimized for a compound microbial agent which composed of a high-performance microbial and unninghamella. Orthogonal design table was used to select soil moisture, pH, chlorpyrifos concentration and compound microbial agents inoculation amount as reference factors in potted...
In order to restore soil polluted by crude oil, soil collected from an oil field located in northeast China were chosen to study in this research, from which three oil degrading bacteria were obtained by means of bacteria screening. We use them ultimately in order to make little damage to the micro-ecological environment. The experimental results indicated that, the degradation rate increases over...
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