In the South Yellow Sea Basin,Mesozoic–Paleozoic marine strata are generally well developed with large thickness,and no substantial breakthroughs have been made in hydrocarbon exploration.Through research,it is belie...In the South Yellow Sea Basin,Mesozoic–Paleozoic marine strata are generally well developed with large thickness,and no substantial breakthroughs have been made in hydrocarbon exploration.Through research,it is believed that the Upper Permian–Lower Triassic can be regarded as a long-term base-level cycle.Based on drilling data,characteristics of the lithology–electric property combination cyclicity,and the special lithology,the long-term base-level cycle was divided into five medium-term base-level cycles(MC1–MC5).On this basis,the Permian–Triassic sedimentary systems and their filling model were analyzed in accordance with the change of base-level cycle and transition of sedimentary environment,as well as characteristics of the drilling sedimentary facies and seismic facies.The results show that there were six sedimentary systems(fluvial,delta,tidal flat,open platform,restricted platform,and continental shelf)developed in the Upper Permian–Lower Triassic,the sedimentary systems were distributed such that the water was deep in the northwest and shallow in the southeast,and there were two base-level cycle filling models(a relatively stable tidal flat facies and a rapidly transgressive continental shelf facies to stable platform facies)developed in the Upper Permian–Lower Triassic.These models can provide a basis for evaluation of the Mesozoic–Paleozoic hydrocarbon geology in the South Yellow Sea Basin.展开更多
In this paper, derivation of analytical expressions for overlap integrals with the same and different screening parameters of Slater type orbitals (STOs) via the Fourier-transform method is presented. Consequently, it...In this paper, derivation of analytical expressions for overlap integrals with the same and different screening parameters of Slater type orbitals (STOs) via the Fourier-transform method is presented. Consequently, it is relatively easy to express the Fourier integral representations of the overlap integrals with same and different screening parameters mentioned as finite sums of Gegenbauer, Gaunt, binomial coefficients, and STOs.展开更多
由于具有高密度布线能力和相对合理的成本,在特殊用途集成电路(ASI Cs)的倒装封装中使用叠积层式(bui l d-up)有机基板非常受欢迎。典型的叠积层式基板包括核层和其双侧的高密度布线层(叠积层)。核层为封装提供所需刚度,其厚度可以是400...由于具有高密度布线能力和相对合理的成本,在特殊用途集成电路(ASI Cs)的倒装封装中使用叠积层式(bui l d-up)有机基板非常受欢迎。典型的叠积层式基板包括核层和其双侧的高密度布线层(叠积层)。核层为封装提供所需刚度,其厚度可以是400μm,600μm,或800μm。新兴的无核基板技术去除了核层,可以提高布线密度,减薄封装,和获得更好的电气性能。本文比较了8层有核与无核基板在31mm和900锡球封装中的核心供电网络(PDN)的性能。在50MHz到2GHz频域内,我们用矢量网络分析仪测得两路高频S参数以分析相应的PDN。测量与模拟结果十分吻合。另外,我们还在时域内模拟计算了PDN对瞬变电流的响应。展开更多
基金Projects(41506080,41702162)supported by the National Natural Science Foundation of ChinaProjects(DD20160152,DD20160147,GZH200800503)supported by China Geological Survey+1 种基金Projects(XQ-2005-01,2009GYXQ10)supported by China Ministry of Land and ResourcesProject(201602004)supported by the Postdoctoral Innovation Foundation of Shandong Province,China
文摘In the South Yellow Sea Basin,Mesozoic–Paleozoic marine strata are generally well developed with large thickness,and no substantial breakthroughs have been made in hydrocarbon exploration.Through research,it is believed that the Upper Permian–Lower Triassic can be regarded as a long-term base-level cycle.Based on drilling data,characteristics of the lithology–electric property combination cyclicity,and the special lithology,the long-term base-level cycle was divided into five medium-term base-level cycles(MC1–MC5).On this basis,the Permian–Triassic sedimentary systems and their filling model were analyzed in accordance with the change of base-level cycle and transition of sedimentary environment,as well as characteristics of the drilling sedimentary facies and seismic facies.The results show that there were six sedimentary systems(fluvial,delta,tidal flat,open platform,restricted platform,and continental shelf)developed in the Upper Permian–Lower Triassic,the sedimentary systems were distributed such that the water was deep in the northwest and shallow in the southeast,and there were two base-level cycle filling models(a relatively stable tidal flat facies and a rapidly transgressive continental shelf facies to stable platform facies)developed in the Upper Permian–Lower Triassic.These models can provide a basis for evaluation of the Mesozoic–Paleozoic hydrocarbon geology in the South Yellow Sea Basin.
文摘In this paper, derivation of analytical expressions for overlap integrals with the same and different screening parameters of Slater type orbitals (STOs) via the Fourier-transform method is presented. Consequently, it is relatively easy to express the Fourier integral representations of the overlap integrals with same and different screening parameters mentioned as finite sums of Gegenbauer, Gaunt, binomial coefficients, and STOs.
文摘由于具有高密度布线能力和相对合理的成本,在特殊用途集成电路(ASI Cs)的倒装封装中使用叠积层式(bui l d-up)有机基板非常受欢迎。典型的叠积层式基板包括核层和其双侧的高密度布线层(叠积层)。核层为封装提供所需刚度,其厚度可以是400μm,600μm,或800μm。新兴的无核基板技术去除了核层,可以提高布线密度,减薄封装,和获得更好的电气性能。本文比较了8层有核与无核基板在31mm和900锡球封装中的核心供电网络(PDN)的性能。在50MHz到2GHz频域内,我们用矢量网络分析仪测得两路高频S参数以分析相应的PDN。测量与模拟结果十分吻合。另外,我们还在时域内模拟计算了PDN对瞬变电流的响应。
