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甘蓝型油菜雌性不育突变体FS-M1乳突细胞的细胞学观察
甘蓝型油菜 雌性不育 细胞器 乳突细胞
2012/3/23
雌性不育突变体FS-M1是从甘蓝型油菜(Brassica napus)品种宁油10号中发现的。为了从细胞学角度研究FS-M1的雌性不育机理, 利用荧光显微镜、扫描和透射电子显微镜观察分析了FS-M1柱头乳突细胞的授粉行为和超微结构。结果表明: 花粉粒能在FS-M1乳突细胞上附着和萌发形成花粉管, 但花粉管无法穿越柱头乳突细胞; 开花后的FS-M1乳突细胞迅速衰退而呈干瘪萎蔫状, 在衰退过程中, F...
Identification the Content of the Windbox Dust Related to the Formation of PCDD/Fs during the Iron Ore Sintering Process
Iron ore sintering Windbox dusts Chemical contents PCDD/Fs de novo synthesis
2016/3/28
This study measured the contents of the ionic and elemental constituents, and the chemical compounds containing in
windbox (WB) dusts collected from a commercial iron ore sintering plant, then the re...
Fs aur as a permanent superhump system。
Latitudinal aerosol size distribution variation in the Eastern Atlantic Ocean measured aboard the FS-Polarstern
Latitudinal aerosol Eastern Atlantic Ocean FS-Polarstern
2008/12/10
Aerosol size distribution measurements from 0.03 µm to 25 µm diameter were taken at ambient humidity aboard the German research vessel, FS-Polarstern, during a transect from Bremerhaven i...
讨论了在约化的条件下morphic环的一些良好性质,以及morphic环和其他环类之间的关系.
5 fs放大激光脉冲载波包络相位的锁定研究
周期量级脉冲 载波包络相位 锁相环控制
2013/9/13
针对结合啁啾脉冲放大技术(CPA)及脉冲压缩技术所产生的5 fs激光脉冲的载波包络相位(CEP)变化情况, 设计制作了用于控制种子脉冲CEP快变化和放大压缩后1 kHz重复频率的亚毫焦耳能量激光脉冲CEP慢变化的两级负反馈锁相环路, 分析了相位控制系统的结构和原理, 介绍了两级锁相环路中相位信号的提取、伺服控制环路的设计和闭环锁定的结果. 实验结果表明, 利用该锁相系统可以稳定地实现周期量级放大激...
高分子量聚全氟乙丙烯(Fs-46)耐辐照性质的研究
全氟乙丙烯共聚物 老化试验 辐照性质
2007/12/22
摘要 本文针对聚全氟乙丙烯(Fs-46)树脂的耐辐照性质, 对照研究了普通Fs-46树脂与分子量大于20万Fs-46树脂的耐辐照及抗热老化性质。在190±2℃饱和水蒸汽0.2~3.0kPa压力下, 经(γ-射线(1×10^6库仑)照射后, 再于200℃经4320小时的热老化模拟试验, 后者机械强度基本不变, 前者的机械强度明显下降。结果表明分子量大于20万的Fs-46树脂具有比普通树脂Fs-46更...
Third-Harmonic Generated in
EH32 Mode of a Gas-Filled
Waveguide by fs Laser Pulses
gas-filled waveguide fs pulses third harmonic energy-pressure curves
2007/8/15
2007Vol.47No.3pp.567-568DOI:
Third-Harmonic Generated in
EH32 Mode of a Gas-Filled
Waveguide by fs Laser Pulses
CHEN Bao-Zhen and HUANG Zu-Qia
The Key Laboratory of Bea...
Signal-Pressure Curves of Cascaded Four-Wave Mixing
in Gas-Filled Capillary by fs Pulses
gas-filled capillary fs pulses cascaded four-wave mixing signal-pressure curves
2007/8/15
2005Vol.43No.3pp.526-528DOI:
Signal-Pressure Curves of Cascaded Four-Wave Mixing
in Gas-Filled Capillary by fs Pulses
CHEN Bao-Zhen and HUANG Zu-Qia
The Key Laboratory ...