We studied the temperature-dependent steady-state and time-resolved fluorescence properties of very small (1-2 nm) ZnO, CdO, and PbO amorphous nanoclusters prep
We calculate the light curve and phase-resolved spectra of Geminga in a three-dimensional pulsar magnetosphere model. The light curve of gamma-rays is consisten
The photorefractive effects of the as-grown and proton-implanted KNbO3 crystals were studied by two-wave mixing at 62.2 μW/cm2 illumination.At this pump power
The homogeneous balance method is extended to seek for B(a)cklund transformation, Lax pairs, non-local symmetries of variable coefficient KdV equation (VCKd VE)
随着水稻基因组测序的逐渐完成,基因库的不断完善,水稻也成为了研究单子叶植物和禾本科的模式生物。近年来,许多与抗旱性,花期,育性等农艺性状相关的重要基因被成功克隆。水稻的花期,也称抽穗期,是营养生长向生殖生长过渡的重要阶段。所以对调控水稻开花相关基因的克隆,对研究水稻花期有着深远的意义,有助于完善整个调控开花基因的体系,同时,对育种工作也有着遗传学的指导作用。本文通过过量表达技术(OverExpre
本研究以不同初始水分的脂肪型种子为试材,研究了不同贮藏温度和湿度条件下种子的水分变化规律,以及在不同贮藏条件下种子发芽率和幼苗质量变化规律,旨在为种子安全贮藏提供理论依据。主要研究结论如下：棉花种子初始水分为5.6%时,贮藏温度为-20℃和4℃且RH>25%、20℃且RH≥25%的处理均呈吸湿变化；相同贮藏条件下的其他处理呈解吸变化。种子初始水分为8%时,贮藏温度为-20℃且RH≥25%、贮藏温度
A complete set of spectroscopic parameters, including Judd-Ofelt parameters, radiative transition probabilities,radiative lifetime, branching ratios and integra
We have studied the steady-state behavior of a cascade three-level atom in a two-mode bad cavity which is parametrically driven by a classical field. In the wea
This paper presents the results of research on microwave breakdown in air, it includes the experimental study and the theoretical analysis. The experimental stu
为明确减量播种和减施氮肥对冬小麦群体生育动态、茎秆质量、抗倒性及产量形成的影响，为河北省冬小麦高产防倒栽培提供技术支持。本研究以强筋优质品种藁优2018为材料，于2015～20