The output characteristics of optical feedback in a helium-neon laser with a birefringent inteal cavity are studied systematically in five different regions of
甘蓝型油菜是我国第一大油料作物,广泛种植于长江流域。由于长江流域雨水频繁等造成的淹水胁迫严重影响油菜萌发期的出苗与发芽,因此解析油菜萌发期耐淹性遗传和分子机制对于选育耐淹性品种具有重要意义。本研究的目的,一是对505份甘蓝型自交系油菜群体在萌发期进行淹水处理,通过表型与生理指标的测定,筛选出耐淹性强的种质资源;二是淹水胁迫处理后测定各项指标,通过关联分析定位与耐淹性相关的显著变异位点,解析萌发期耐
The N-dimensional Schrodinger equation for the harmonic oscillator is reduced to a first-order differential equation in terms of the Laplace transformation and
Under the consideration of non-steady case,a set of equations is derived,which describes the non-steady nonlinear interactions between plasma and field in the f
小麦赤霉病是由镰刀菌引起的一种世界性的真菌病害，主要在湿润和半湿润地区发生。有17种镰刀菌可以诱发该病的发生，其中F.graminearum是流行最广、危害最大的一种。赤霉病不仅
磷素参与植物体内许多重要的代谢活动。据统计，当前我国乃至全世界的耕地土壤中有很大一部分处于缺磷状态，因此磷成为限制作物高产、优质的关键因素之一。本研究以转WRKY3基因烟草为研究对象，以野生型K326品种烟草为对照，对两个品种苗期在缺磷、低磷和适磷营养液供应下的生理响应和差异蛋白进行研究。其中生理响应的研究是以两个品种烟草苗期分别在三个磷水平供应下，培养0天、1天、5天、10天和15天时取样作为研
This paper shows that waveguides induced by grey screening-photovoltaic solitons are always single mode for all intensity ratio, which are the ratio between the
The mode hopping phenomenon induced by optical feedback in single-mode microchip Nd:YAG lasers is presented.With optical feedback, mode hopping strongly depends
The phase transitions of semiconductor GaN from the Wurtzite (WZ) structure and the zinc-blende (ZB) structure to the rocksalt (RS) structure are investigated b
Non-equilibrium molecular dynamics simulations have been performed to investigate the effect of the cross-section shape on the thermal conductivity of argon nan