目的建立超级耐药基因NDM-1的SYBR Green I荧光定量PCR检测方法。方法针对超级耐药基因NDM-1序列,合成其特异性引物,并对反应条件进行优化,建立基于SYBR Green I实时荧光定量PCR检测方法,观察该方法的灵敏度和重复性。结果标准品在5.21&...目的建立超级耐药基因NDM-1的SYBR Green I荧光定量PCR检测方法。方法针对超级耐药基因NDM-1序列,合成其特异性引物,并对反应条件进行优化,建立基于SYBR Green I实时荧光定量PCR检测方法,观察该方法的灵敏度和重复性。结果标准品在5.21×10^(1)~5.21×10^(8) copies/μL内具有良好的线性关系,标准曲线R 2值均在0.99以上,最低检出量为5.21×10^(1) copies/μL,稳定性好。结论成功建立了超级耐药基因NDM-1的检测方法。展开更多
Under China's innovation-driven development strategy, venture capital has become an important driving force in urban agglomeration integration and collaborative innovation. This paper uses social network analysis ...Under China's innovation-driven development strategy, venture capital has become an important driving force in urban agglomeration integration and collaborative innovation. This paper uses social network analysis to analyze spatiotemporal differences of venture capital in the Beijing-Tianjin-Hebei urban agglomeration for the period 2005–2015. A gravity model and panel data regression model are used to reveal the influencing factors on spatiotemporal differences in venture capital in the region. This study finds that there is a certain cyclical fluctuation and uneven differentiation in the venture capital network in the Beijing-Tianjin-Hebei urban agglomeration in terms of total investment, and that the three centers of venture capital(Beijing, Shijiazhuang and Tangshan) have a stimulatory effect on surrounding cities; flows of venture capital between cities display certain networking rules, but they are slow to develop and strongly centripetal; there is a strong positive correlation between levels of information infrastructure development and economic development and venture capital investment; and places with relatively underdeveloped financial environments and service industries are less able to apply the fruits of innovation and entrepreneurship and to attract funds. This study can act as a reference for the Beijing-Tianjin-Hebei urban agglomeration in building a world-class super urban agglomeration with the best innovation capabilities in China.展开更多
文摘目的建立超级耐药基因NDM-1的SYBR Green I荧光定量PCR检测方法。方法针对超级耐药基因NDM-1序列,合成其特异性引物,并对反应条件进行优化,建立基于SYBR Green I实时荧光定量PCR检测方法,观察该方法的灵敏度和重复性。结果标准品在5.21×10^(1)~5.21×10^(8) copies/μL内具有良好的线性关系,标准曲线R 2值均在0.99以上,最低检出量为5.21×10^(1) copies/μL,稳定性好。结论成功建立了超级耐药基因NDM-1的检测方法。
基金Major Program of the National Natural Science Foundation of China,No.41590842
文摘Under China's innovation-driven development strategy, venture capital has become an important driving force in urban agglomeration integration and collaborative innovation. This paper uses social network analysis to analyze spatiotemporal differences of venture capital in the Beijing-Tianjin-Hebei urban agglomeration for the period 2005–2015. A gravity model and panel data regression model are used to reveal the influencing factors on spatiotemporal differences in venture capital in the region. This study finds that there is a certain cyclical fluctuation and uneven differentiation in the venture capital network in the Beijing-Tianjin-Hebei urban agglomeration in terms of total investment, and that the three centers of venture capital(Beijing, Shijiazhuang and Tangshan) have a stimulatory effect on surrounding cities; flows of venture capital between cities display certain networking rules, but they are slow to develop and strongly centripetal; there is a strong positive correlation between levels of information infrastructure development and economic development and venture capital investment; and places with relatively underdeveloped financial environments and service industries are less able to apply the fruits of innovation and entrepreneurship and to attract funds. This study can act as a reference for the Beijing-Tianjin-Hebei urban agglomeration in building a world-class super urban agglomeration with the best innovation capabilities in China.
