The scalar one-loop four-point function with one massless vertex is evaluated analytically by employing the loop regularization method.According to the method,a characteristic scale μs is introduced to regularize the divergent integrals.The infrared diver
Density-graded cellular materials have tremendous potential in structural applications where impact re- sistance is required. Cellular materials subjected to high impact loading result in a compaction type defor- mation, usually modeled using continuum-ba
The magnetic properties and magnetocaloric effect of an antiferromagnetic/ferromagnetic (AFM/FM)BiFeO3/Co bilayer with mixed-spin (5/2,3/2) have been studied based on Monte Carlo simulation.The magnetization,susceptibility,and critical temperature are inv
The concentration distribution of urban air pollutants is closely related to people\'s health. As an impor- tant utilization form of urban wind power, rooftop wind turbines have been widely used in cities. The wake effect of the rooftop wind turbines wi
A novel symplectic superposition method has been proposed and developed for plate and shell prob- lems in recent years. The method has yielded many new analytic solutions due to its rigorousness. In this study, the first endeavor is made to further develo
Two sets of experiments in the St. Anthony Falls Laboratory (SAFL) wave tank facility and atmospheric wind tunnel are integrated to provide a scaled representation of a floating wind turbine under heave and pitch motions due to ocean waves. The quasi-coup
Wind turbines are installed offshore with the assistance of a floating platform to help meet the world\'s increasing energy needs. However, the incident wind and extra incident wave disturbances have an im- pact on the performance and operation of the f
Wind-tunnel experiments were performed to study the effect of favorable and adverse constant pressure gradients (PG) from local changes in the topography right downwind of a model wind turbine. Particle image velocimetry was used to characterize the near
折纸是一门古老艺术,其本质是将平面材料沿着事先设计好的折痕进行折叠,进而形成一个复杂的三维结构.柔性折纸结构是实现三维结构轻量化的重要途径.因此,解析折纸结构几何特性和力学性质十分必要.本文以MSC(Magic Spiral Cube)为研究对象,通过实际折痕和虚拟折痕的方法,建立了该结构的几何模型,确定了实现完全展开和完全折叠对刚性面和可变形面的设计条件,在虚拟折痕上引入了扭转刚度,证明了该扭转刚度与柔性面变形的等效性,从而得到了MSC折纸结构的弹性势能,得到了使结构变形的力与位移本构.通过力学特性分析
We examined the conditions of neutron density (n) and temperature (T9) required for the N =50,82,and 126 isotopes to be waiting points (WP) in the r-process.The nuclear mass based on experimental data presented in the AME2020 database (AME and AME ± Δ) an