Issues in the Reconstruction of Gene Order Evolution

As genomes evolve over hundreds of millions years, the chromosomes become rearranged, with segments of some chromosomes inverted, while other chromosomes reciprocally exchange chunks from their ends. These rearrangements lead to the scrambling of the elements of one genome with respect to another descended from a common ancestor. Multidisciplinary work undertakes to mathematically model these processes and to develop statistical analyses and mathematical algorithms to understand the scrambling in the chromo...     

低损耗多调谐无源滤波器

双调谐滤波器和三调谐滤波器具有占地少、减少高压电感和电容元件、节省开关等诸多优点，已经在直流输电工程中得到广泛应用。但是现有的多调谐阻尼型滤波器用于低次谐波滤波时，滤波器的基波损耗过大。文中介绍了一种低损耗的阻尼型双调谐滤波器和三调谐滤波器电路，其基本思路是使滤波电路的部分LC元件构成基波串联调谐电路，并使并联阻尼电阻连接在基波调谐电路的两端，从而避免阻尼电阻上的基波功率损耗。新滤波器用在高压直流输电系统中将节省运行成本。     

平果可控串补本体保护介绍

介绍了平果可控串补中电容器、金属氧化物可变电阻器(MOV)、晶闸管阀、火花放电间隙、平台、旁路断路器、冷却系统等设备的保护原理,阐述了各保护的功能及其作用,并对平果可控串补保护系统在调试及试运行期间发现的问题和相应的改进措施进行了说明.