By taking the influence of optical phonon modes into account, this paper adopts the dielectric continuum phonon model and force balance equation to investigate
The existence of two different discharge modes has been verified in an rf (radio-frequency) atmospheric pressure glow discharge (APGD) by Shi [J. Appl. Phys. 97
This paper shows that the local electric field distribution near the nanostructure metallic surface is obtained by solving the Laplace equation, and furthermore
本论文旨在研究种植密度对玉米骨干自交系与衍生系产量及相关生理特性的影响，以期为高产玉米栽培和育种提供科学依据。试验材料为黄早四与衍生系昌7-2，掖478与衍生系郑58，以及黄早四与掖478的杂交种黄掖，昌7-2与郑58杂交种郑单958。试验设3个种植密度，分别为3000株/亩，5000株/亩，7000株/亩。试验主要研究结果如下：1.种植密度对自交系与衍生系的产量和产量构成的影响在不同的种植密度下
花940小麦是河北省粮油作物研究所用细胞工程技术育成的新品系。半冬性,株高80—85厘米,分蘖力较强,成穗率较高,白粒、饱满度好,根系发达,每穗27—30粒,千粒重40克,生育期比
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