本文应用微分干涉相衬法对优雅蝈螽Gampsocleis gratiosa Brunner von Wattenwyl和暗褐蝈螽G.sedakovii(Fischer von Waldheim)雄性精巢管基部、输精管、贮精囊和精包,及雌性受精囊中精子束的形态变化进行了观察,对探讨螽斯近缘种的生...本文应用微分干涉相衬法对优雅蝈螽Gampsocleis gratiosa Brunner von Wattenwyl和暗褐蝈螽G.sedakovii(Fischer von Waldheim)雄性精巢管基部、输精管、贮精囊和精包,及雌性受精囊中精子束的形态变化进行了观察,对探讨螽斯近缘种的生殖隔离机制和生殖生物学具有重要意义。结果表明:这两种蝈螽的精子束通过精包转移到雌性受精囊后,精子束的形态发生了显著变化。精巢管基部的精子为游离的单个精子;输精管、贮精囊和精包中精子成束排列形成较分散的精子束,精子束头部包裹有粘液帽;雌性受精囊中的精子束的精子呈羽状排列,精子的头部汇集在中央轴上。两种蝈螽精子束形态差异不显著。展开更多
A positive grid bias and a negative substrate bias voltages are applied to the self-made hot filament chemical vapor deposited （HFCVD） system. The high quality nanocrystalline diamond （NCD） film is successfully de...A positive grid bias and a negative substrate bias voltages are applied to the self-made hot filament chemical vapor deposited （HFCVD） system. The high quality nanocrystalline diamond （NCD） film is successfully deposited by double bias voltage nucleation and grid bias voltage growth. The Micro-Raman XRD SEM and AFM are used to investigate the diamond grain size, microstructure, surface morphology, and nucleation density. Results show that the obtained NCD has grain size of about 20 nm. The effect of grid bias voltage on the nucleation and the diamond growth is studied. Experimental results and theoretical analysis show that the positive grid bias increases the plasma density near the hot filaments, enhances the diamond nucleation, keeps the nanometer size of the diamond grains, and improves the quality of diamond film.展开更多
O436.1 2002020850菲涅耳衍射及柯林斯公式的快速傅里叶变换计算=Accurate calculation of Fresnel diffraction andCollins’formula by using fast Fourier transform[刊,中]/李俊昌(昆明理工大学激光应用研究所.云南,昆明(650093))...O436.1 2002020850菲涅耳衍射及柯林斯公式的快速傅里叶变换计算=Accurate calculation of Fresnel diffraction andCollins’formula by using fast Fourier transform[刊,中]/李俊昌(昆明理工大学激光应用研究所.云南,昆明(650093))∥光电子·激光.—2001,12(5).展开更多
文摘本文应用微分干涉相衬法对优雅蝈螽Gampsocleis gratiosa Brunner von Wattenwyl和暗褐蝈螽G.sedakovii(Fischer von Waldheim)雄性精巢管基部、输精管、贮精囊和精包,及雌性受精囊中精子束的形态变化进行了观察,对探讨螽斯近缘种的生殖隔离机制和生殖生物学具有重要意义。结果表明:这两种蝈螽的精子束通过精包转移到雌性受精囊后,精子束的形态发生了显著变化。精巢管基部的精子为游离的单个精子;输精管、贮精囊和精包中精子成束排列形成较分散的精子束,精子束头部包裹有粘液帽;雌性受精囊中的精子束的精子呈羽状排列,精子的头部汇集在中央轴上。两种蝈螽精子束形态差异不显著。
文摘A positive grid bias and a negative substrate bias voltages are applied to the self-made hot filament chemical vapor deposited （HFCVD） system. The high quality nanocrystalline diamond （NCD） film is successfully deposited by double bias voltage nucleation and grid bias voltage growth. The Micro-Raman XRD SEM and AFM are used to investigate the diamond grain size, microstructure, surface morphology, and nucleation density. Results show that the obtained NCD has grain size of about 20 nm. The effect of grid bias voltage on the nucleation and the diamond growth is studied. Experimental results and theoretical analysis show that the positive grid bias increases the plasma density near the hot filaments, enhances the diamond nucleation, keeps the nanometer size of the diamond grains, and improves the quality of diamond film.
文摘O436.1 2002020850菲涅耳衍射及柯林斯公式的快速傅里叶变换计算=Accurate calculation of Fresnel diffraction andCollins’formula by using fast Fourier transform[刊,中]/李俊昌(昆明理工大学激光应用研究所.云南,昆明(650093))∥光电子·激光.—2001,12(5).
