This paper uses canonical piecewise-linear analysis method to analyze nonlinear DC fault circuitsand solve for the values of the test port voltages which are selected beforehand .The method needs lessmemory storages,o...This paper uses canonical piecewise-linear analysis method to analyze nonlinear DC fault circuitsand solve for the values of the test port voltages which are selected beforehand .The method needs lessmemory storages,obtains the results in finite steps and has high efficiency in computation.It can be appliedto the circuits containing multiport nonlinear elements.It is a good method of pre-test analysis for fault cir-cuits in simulation-before-test aproach in analogue circuit diagnosis.展开更多
以已鉴定的抗寒品种苏粳2号和立新粳为试验材料,不抗寒品种三百粒、阳壳糯和加巴拉为对照,研究了低温处理前、6℃低温处理4 d后和恢复生长8 d 3个阶段水稻幼苗叶片中超氧化物歧化酶(SOD)、过氧化物酶(POD)的活性变化。研究结果表明:经...以已鉴定的抗寒品种苏粳2号和立新粳为试验材料,不抗寒品种三百粒、阳壳糯和加巴拉为对照,研究了低温处理前、6℃低温处理4 d后和恢复生长8 d 3个阶段水稻幼苗叶片中超氧化物歧化酶(SOD)、过氧化物酶(POD)的活性变化。研究结果表明:经低温胁迫后,抗寒品种苏粳2号和立新粳的SOD活性分别上升了110.7%、87.4%,POD活性分别上升了71.7%、56.4%,且抗寒能力越强,其活性的上升幅度越大,而不抗寒品种与对照的SOD与POD活性在处理前后差异不显著。展开更多
文摘This paper uses canonical piecewise-linear analysis method to analyze nonlinear DC fault circuitsand solve for the values of the test port voltages which are selected beforehand .The method needs lessmemory storages,obtains the results in finite steps and has high efficiency in computation.It can be appliedto the circuits containing multiport nonlinear elements.It is a good method of pre-test analysis for fault cir-cuits in simulation-before-test aproach in analogue circuit diagnosis.
文摘以已鉴定的抗寒品种苏粳2号和立新粳为试验材料,不抗寒品种三百粒、阳壳糯和加巴拉为对照,研究了低温处理前、6℃低温处理4 d后和恢复生长8 d 3个阶段水稻幼苗叶片中超氧化物歧化酶(SOD)、过氧化物酶(POD)的活性变化。研究结果表明:经低温胁迫后,抗寒品种苏粳2号和立新粳的SOD活性分别上升了110.7%、87.4%,POD活性分别上升了71.7%、56.4%,且抗寒能力越强,其活性的上升幅度越大,而不抗寒品种与对照的SOD与POD活性在处理前后差异不显著。
