Solving Klein Gordon equation with equal ring-shaped harmonic oscillator scalar and vector potentials, we obtain the exact normalized bound-state wavefunction a
Based on a full-vector model, a theoretical study on a kind of high birefringence photonic crystal fibre is presented.Due to introducing air holes of two differ
In this paper, we present the research on an optical electron polarimeter, which is used to determine the polarizationof an incident electron beam by measuring
棉属包括5个四倍体棉种,其中陆地棉和海岛棉为栽培种,达尔文棉、黄褐棉和毛棉为野生种。从种质资源角度来讲,陆地棉野生种系也属于四倍体野生棉,它是未经栽培驯化的陆地棉原始类型,不仅具有抗病虫,耐干旱、耐盐碱、纤维高强优质等遗传特性,而且比野生资源更容易导入栽培品种,所以对于改进棉花品质和抗性都具有很好的利用价值。本研究利用形态学标记和SSR标记对18份四倍体棉种及42份陆地棉野生种系材料的遗传多样性进
Chaotic behaviour in a second-order autonomous Birkhoff system with a heteroclinic circle under weakly periodicperturbation is studied using the Melnikov method
The nonlinear amplitude equation, which was derived by Jian Yongjun employing expansion of two-time scales in inviscid fluids in a vertically oscillating circul
东平湖是黄河下游地区最大的蓄洪湖泊,大汶河是其唯一入湖河流.对东平湖33个表层沉积物样品进行粒度分析,探讨了东平湖表层沉积物粒度组成及空间分布特征.研究结果表明,受物
The univalent calcium and strontium ions have been confirmed as ideal lasing substances both for self-terminating laser and recombination laser by theoretically
We have demonstrated that the bulk-like contribution to tunnelling magnetoresistance(TMR) exists in the magnetic tunnel junctions,and is determined by the tunne
The insertion losses of silicon oxynitride (SiON) waveguides have been measured in the 1550 nm wavelength region.The waveguide structure consisted of a 2.0μm S