阐述了山羊绒/绵羊毛混纺纱定量分析方法,对比分析了使用视频显微镜、显微投影仪和扫描电子显微镜,根据山羊绒、绵羊毛鳞片结构特征和纤维直径测定山羊绒/绵羊毛混纺纱纤维含量的方法和特点。测试结果表明:采用视频显微镜及与其兼容配套...阐述了山羊绒/绵羊毛混纺纱定量分析方法,对比分析了使用视频显微镜、显微投影仪和扫描电子显微镜,根据山羊绒、绵羊毛鳞片结构特征和纤维直径测定山羊绒/绵羊毛混纺纱纤维含量的方法和特点。测试结果表明:采用视频显微镜及与其兼容配套的Pinnacle Studio 8.0图像采集软件和Imager-Proplus图像分析软件测试山羊绒/绵羊毛混纺纱纤维含量,比显微投影仪和扫描电子显微镜测试法较为方便和快捷,且精确度较高,适合山羊绒/绵羊毛混纺纱定量分析测试。展开更多
The effect of Ca 2+ on HT induced apoptosis in HL 60 cells was examined. Characteristics of apoptosis induced by harringtonine (HT) or campothecin (CAM) could not be abolished by extracellular calcium chelator EGTA; h...The effect of Ca 2+ on HT induced apoptosis in HL 60 cells was examined. Characteristics of apoptosis induced by harringtonine (HT) or campothecin (CAM) could not be abolished by extracellular calcium chelator EGTA; however, an intracellular Ca 2+ chelator BAPTA AM could block HT or CAM induced HL 60 cell apoptosis. Requirement of intracellular calcium for HT\|induced apoptosis is further supported by the fact that intracellular Ca 2+ depleted HL 60 cells could not undergo HT induced apoptosis. No significant increase of intracellular Ca 2+ was found after HT treatment. By using video enhancement contrast microscopy (VEC), the dynamic changes of intracellular calcium distribution over the whole period of apoptosis in the same individual cell were detected. The results demonstrated the movement of Ca 2+ from cytosol to nucleus after initiation of apoptosis by treatment with HT.展开更多
文摘阐述了山羊绒/绵羊毛混纺纱定量分析方法,对比分析了使用视频显微镜、显微投影仪和扫描电子显微镜,根据山羊绒、绵羊毛鳞片结构特征和纤维直径测定山羊绒/绵羊毛混纺纱纤维含量的方法和特点。测试结果表明:采用视频显微镜及与其兼容配套的Pinnacle Studio 8.0图像采集软件和Imager-Proplus图像分析软件测试山羊绒/绵羊毛混纺纱纤维含量,比显微投影仪和扫描电子显微镜测试法较为方便和快捷,且精确度较高,适合山羊绒/绵羊毛混纺纱定量分析测试。
文摘The effect of Ca 2+ on HT induced apoptosis in HL 60 cells was examined. Characteristics of apoptosis induced by harringtonine (HT) or campothecin (CAM) could not be abolished by extracellular calcium chelator EGTA; however, an intracellular Ca 2+ chelator BAPTA AM could block HT or CAM induced HL 60 cell apoptosis. Requirement of intracellular calcium for HT\|induced apoptosis is further supported by the fact that intracellular Ca 2+ depleted HL 60 cells could not undergo HT induced apoptosis. No significant increase of intracellular Ca 2+ was found after HT treatment. By using video enhancement contrast microscopy (VEC), the dynamic changes of intracellular calcium distribution over the whole period of apoptosis in the same individual cell were detected. The results demonstrated the movement of Ca 2+ from cytosol to nucleus after initiation of apoptosis by treatment with HT.
