This paper reports an improved time-delay estimation(TDE)technique for the derivation of turbulence structures based on gas-puff imaging data.The improved TDE technique,integrating an inverse timing search and hierarc...This paper reports an improved time-delay estimation(TDE)technique for the derivation of turbulence structures based on gas-puff imaging data.The improved TDE technique,integrating an inverse timing search and hierarchical strategy,offers superior accuracy in calculating turbulent velocity field maps and analyzing blob dynamics,which has the power to obtain the radial profiles of equilibrium poloidal velocity,blob size and its radial velocity,even the fluctuation analysis,such as geodesic acoustic modes and quasi-coherent mode,etc.This improved technique could provide important 2D information for the study of edge turbulence and blob dynamics,advancing the understanding of edge turbulence physics in fusion plasmas.展开更多
利用高效液相色谱-三重四极杆质谱仪建立水体中残杀威和高效氯氰菊酯含量检测方法。采用高效液相色谱串联质谱法,以乙腈-5 mmol/L乙酸铵水溶液(90%+10%)为流动相,使用以Eclipse Plus C18填充的色谱柱和质谱检测器,对水体中的残杀威和高...利用高效液相色谱-三重四极杆质谱仪建立水体中残杀威和高效氯氰菊酯含量检测方法。采用高效液相色谱串联质谱法,以乙腈-5 mmol/L乙酸铵水溶液(90%+10%)为流动相,使用以Eclipse Plus C18填充的色谱柱和质谱检测器,对水体中的残杀威和高效氯氰菊酯进行测定,外标法定量。结果表明:残杀威和高效氯氰菊酯分别在0.94~47.10、0.63~31.29μg/L质量浓度范围内线性关系良好,相关系数分别为0.9991和0.9994,变异系数分别为0.52%和2.05%,高质量浓度水平的平均回收率分别为102.26%和102.44%,低质量浓度水平的平均回收率分别为90.74%和98.24%。该方法具有操作简便、分离效果好、快速等优点,线性关系、准确度、精密度和灵敏度均满足要求,可用于水体中残留检测和水生生态环境毒理研究。展开更多
基金partially supported by the National Key R&D Program of China(Nos.2019YFE03030002 and 2022YFE03030001)National Natural Science Foundation of China(Nos.12175186 and 12175055)the Natural Science Foundation of Sichuan Province(Nos.2022NSFSC1820 and 2023NSFSC1289)。
文摘This paper reports an improved time-delay estimation(TDE)technique for the derivation of turbulence structures based on gas-puff imaging data.The improved TDE technique,integrating an inverse timing search and hierarchical strategy,offers superior accuracy in calculating turbulent velocity field maps and analyzing blob dynamics,which has the power to obtain the radial profiles of equilibrium poloidal velocity,blob size and its radial velocity,even the fluctuation analysis,such as geodesic acoustic modes and quasi-coherent mode,etc.This improved technique could provide important 2D information for the study of edge turbulence and blob dynamics,advancing the understanding of edge turbulence physics in fusion plasmas.
文摘利用高效液相色谱-三重四极杆质谱仪建立水体中残杀威和高效氯氰菊酯含量检测方法。采用高效液相色谱串联质谱法,以乙腈-5 mmol/L乙酸铵水溶液(90%+10%)为流动相,使用以Eclipse Plus C18填充的色谱柱和质谱检测器,对水体中的残杀威和高效氯氰菊酯进行测定,外标法定量。结果表明:残杀威和高效氯氰菊酯分别在0.94~47.10、0.63~31.29μg/L质量浓度范围内线性关系良好,相关系数分别为0.9991和0.9994,变异系数分别为0.52%和2.05%,高质量浓度水平的平均回收率分别为102.26%和102.44%,低质量浓度水平的平均回收率分别为90.74%和98.24%。该方法具有操作简便、分离效果好、快速等优点,线性关系、准确度、精密度和灵敏度均满足要求,可用于水体中残留检测和水生生态环境毒理研究。
