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Search Results: 1 - 10 of 294391 matches for " <br>邵元健 "
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Genetic Study on Genic Male Sterility of Pepper and Its Application in Hybrid Breeding
辣椒雄性核不育基因的遗传研究及其在杂交育种中的应用

SHAO Yuan-jian,WU Wen-wen,SHEN Su-xiang,ZHAO Shan-shan,<br>,吴雯雯,沈素香,赵闪闪
热带亚热带植物学报 , 2013,
Abstract: Genic male sterile (GMS) and cytoplasmic male sterile (CMS) have widely used in pepper breeding. GMS is controlled by nuclear genes, while CMS is regulated by both nuclear genes and cytoplasmic genes. The advanced studies on genetics and application of pepper male sterile in hybrid breeding, the construction of genetic linkage map, gene mapping, and the development of molecular markers were reviewed, which will benefit the further researches of genetic mechanism and gene cloning in pepper.
一品红组培苗快繁技术的研究
,周蒋陈
北方园艺 , 2012,
Abstract: 以一品红带芽茎段、叶片为外植体,研究了不同激素浓度配比的MS培养基对愈伤组织、芽的分化及增殖和试管苗生根的不同效应。结果表明最佳愈伤组织诱导培养基为MS+BA02mg/L+NAA05mg/L+蔗糖30g/L+琼脂75g/L(pH56),诱导率达到925%;芽的分化最佳培养基为MS+BA20mg/L+NAA02mg/L+蔗糖30g/L+琼脂75g/L,不定芽的诱导率达到833%;芽的增殖培养基为MS+BA10mg/L+NAA02mg/L+蔗糖30g/L+琼脂5g/L,增殖系数为108;而最佳生根培养基为1/2MS+BA02mg/L+NAA05mg/L+蔗糖30g/L?+琼脂75g/L,每芽生根数平均为35条。该研究结果为一品红组培苗的工厂化生产提供了可靠的技术指标。?
Performance of multilayer dielectric grating irradiated by ultrashort optical pulse
多层介质膜脉冲宽度压缩光栅与超短脉冲作用时的性能分析

Liu Shi-Jie,Ma Jian-Yong,Shen Zi-Cai,Kong Wei-Jin,Shen Jian,Jin Yun-Xia,Zhao Yuan-An,Shao Jian-Da,Fan Zheng-Xiu,<br>刘世杰,,沈自才,孔伟金,,晋云霞,,建达,范正修
物理学报 , 2007,
Abstract: In the ultrashort pulse high-energy laser system based on chirped pulse amplification technique, multilayer dielectric grating with good output waveform and high laser induced damage threshold plays an important role. Based on Fourier spectral transform and rigorous modal method, optical characteristic of multilayer dielectric grating under irradiation of ultrashort optical pulse is analyzed. The results show that the reflected pulse at the -1 order exhibits asymmetrical Gaussian shape with oscillatory tail in the front edge and decreasing energy when the reflection bandwidth is narrower than the frequency bandwidth of the incident pulse with Guassian shape. The effect of structure parameters of multilayer dielectric grating on the reflection bandwidth are discussed in detail, which provides guidance to the design of multilayer dielectric grating with desired reflection bandwidth. Finally, near-field distribution of multilayer dielectric grating is analyzed to study its damages induced by ultrashort pulses.
不同移栽方式对常绿水生鸢尾试管苗移栽成活率的比较研究
周蒋陈,蔡小平,,陆 兵
北方园艺 , 2010, DOI: 10.11937/bfyy.201002050
Abstract:
Design and analysis of double layer resonant grating filters in the visible spectral region
可见光波段双层浮雕型导模共振滤波器设计与分析

Ma Jian-Yong,Liu Shi-Jie,Wei Chao-Yang,Jin Yun-Xi,Zhao Yuan-An,Shao Jian-Da,Fan Zhen-Xiu,<br>麻,刘世杰,魏朝阳,晋云霞,,建达,范正修
物理学报 , 2008,
Abstract: Guide-mode resonances of double-layer gratings are analyzed with the Fourier modal method and the relationship between spectral characteristics of resonant gratings such as peak diffraction efficiency, linewidth and side-band reflectance and depth, period and fill ratio of grating are illustrated in detail. It is shown that the diffraction efficiency of resonant gratings will be higher than 99.5 percent when the groove depth tolerance is in the range of 15 percent, and mean while the relative error of line width will reach to 7 and 60 percent respectively for the negative and positive conditions. Compared with the position of resonant wavelength, the line width of resonant grating filters is relatively sensitive to the error of groove depth and residual thickness of waveguide layer when they deviate from designed values. Moveover, the resonant wavelength and width of spectrum do vary as a function of period and fill ratio.
Design of reflection resonant grating filters
反射型导模共振滤波器设计

Ma Jian-Yong,Liu Shi-Jie,Wei Chao-Yang,Xu Cheng,Jin Yun-Xia,Zhao Yuan-An,Shao Jian-Da,Fan Zheng-Xiu,<br>麻,刘世杰,魏朝阳,许程,晋云霞,,建达,范正修
物理学报 , 2008,
Abstract: 导模共振滤波器由于其高峰值反射率,低旁带反射,窄带以及带宽可控等优良特性引起了人们极大的关注,采用亚波长光栅的导模共振效应可以实现传统基于高低折射率介质的多层膜滤波器所无法实现的特殊功能,在弱调制模式下,其共振带宽可以被压缩到零点几纳米,但是由于介质表面和空气层的菲涅耳反射,使得偏离或者远离共振区时的反射率偏高,根据等效介质理论,亚波长光栅在远离共振区可以被看为均匀的薄膜,本文通过对导模共振光栅进行单层、双层以及三层抗反射设计,有效的降低了导模共振光栅的旁带反射率,从而在可见光波段获得了性能优良的共振滤波
Design of reflection resonant grating filters
反射型导模共振滤波器设计

Ma Jian-Yong,Liu Shi-Jie,Wei Chao-Yang,Xu Cheng,Jin Yun-Xi,Zhao Yuan-An,Shao Jian-Da,Fan Zheng-Xiu,<br>麻,刘世杰,魏朝阳,许 程,晋云霞,,建达,范正修
中国物理 B , 2008,
Abstract: 导模共振滤波器由于其高峰值反射率,低旁带反射,窄带以及带宽可控等优良特性引起了人们极大的关注,采用亚波长光栅的导模共振效应可以实现传统基于高低折射率介质的多层膜滤波器所无法实现的特殊功能,在弱调制模式下,其共振带宽可以被压缩到零点几纳米,但是由于介质表面和空气层的菲涅耳反射,使得偏离或者远离共振区时的反射率偏高,根据等效介质理论,亚波长光栅在远离共振区可以被看为均匀的薄膜,本文通过对导模共振光栅进行单层、双层以及三层抗反射设计,有效的降低了导模共振光栅的旁带反射率,从而在可见光波段获得了性能优良的共振滤波
基于模型试验的悬索桥结构损伤识别研究
孙宗光,陈一飞,,,栗燕娜
工程力学 , 2014, DOI: doi:10.6052/j.issn.1000-4750.2012.12.0980
Abstract: 通过整桥模型试验,探讨了悬索桥结构损伤识别方法.首先面向损伤识别研究设计制作了长10m的悬索桥试验模型,并通过模型误差分析建立了相应的高精度有限元模型.基于悬索桥结构健康监测和试验检测的主要常用参数以及这些参数对结构损伤的灵敏性和相关性研究,确定损伤识别策略.采用有限元模型模拟可能的损伤工况,从而生成BP网络的训练样本数据.再将试验模型作为“实际结构”通过损伤模拟试验生成网络测试数据.就试验模拟的损伤情况而言,对损伤位置的识别准确率达到了86%,相应的损伤程度识别精度也达到可接受程度.显示了该方法较好的应用前景,对基于监测系统的悬索桥健康状态识别与评价具有参考意义.
现代层次化可编程逻辑器件软件系统FDE2009
谢丁,,来金梅,,陈利光,,俞建德
电子学报 , 2010,
Abstract: 本文提出并实现了适用于现代层次化结构的FPGA芯片的CAD软件系统:FDE2009(FPGADevelopmentEnvironment).该软件系统不但由工艺映射,布局布线,位流生成,编程下载等功能模块构成了一套完整的FPGACAD流程,并且根据现代FPGA芯片层次化的结构特点,提出了逻辑分层的布局思想及由底至上逐层构建布线资源图的算法,提高了硬件资源的利用率及程序的运行效率.此外,本软件自定义了一套使用扩展性标志语言的文件系统,从而使其具有一定的通用性及良好的扩展性.软硬件协同测试结果表明该软件系统各模块功能正确,并能配合硬件高效的实现各类功能电路,是一套实用的FPGA软件系统.
辣椒雄性核不育基因的遗传研究及其在杂交育种中的应用
,吴雯雯?,沈素香?,赵闪闪?
热带亚热带植物学报 , 2013, DOI: 10.3969/j.issn.1005–3395.2013.01.014
Abstract: 辣椒(capsicumannuuml.)雄性核不育和核-质互作型不育类型已在杂交种的选配中得到应用。核不育类型由细胞核内的基因控制,而核-质互作型雄性不育则由细胞核和细胞质内的基因共同控制。综述了辣椒雄性不育的遗传及其杂交育种的研究进展,包括辣椒连锁遗传图谱的构建、核基因的定位、连锁分子标记的发展,为深入研究辣椒雄性不育的遗传机理及基因克隆提供参考。
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