以河北地区原酒为研究对象,采用顶空固相微萃取(HS-SPME)结合气相质谱(GC-MS)联用技术,进行了挥发性成分的分离鉴定。以酯类物质峰面积比为指标,以添加无机盐的量、装液量和萃取温度为因素,应用单因素实验及响应面设计实验,优化萃取吸...以河北地区原酒为研究对象,采用顶空固相微萃取(HS-SPME)结合气相质谱(GC-MS)联用技术,进行了挥发性成分的分离鉴定。以酯类物质峰面积比为指标,以添加无机盐的量、装液量和萃取温度为因素,应用单因素实验及响应面设计实验,优化萃取吸附工艺。结果表明,最佳萃取工艺为:添加无机盐的量0.42 g,装液量7 m L,萃取温度30℃。在此条件下,原酒中共检测出27种挥发性香气成分,其中醇类3种,酯类20种,醛类4种。此次实验不仅为河北地区白酒原酒的进一步分析奠定了基础,也为SPME-GC-MS技术的应用提供了更为广阔的前景。展开更多
Device robust-design is inherently a multiple-objective optimization problem.Using design of experiments (DoE) combined with response surface methodology (RSM) can satisfy the great incentive to reduce the number of t...Device robust-design is inherently a multiple-objective optimization problem.Using design of experiments (DoE) combined with response surface methodology (RSM) can satisfy the great incentive to reduce the number of technology CAD(TCAD) simulations that need to be performed.However,the errors of RSM models might be large enough to diminish the validity of the results for some nonlinear problems.To find the feasible design space,a new method with objectives-oriented design in generations that takes the errors of RSM model into account is presented.After the augment design of experiments in promising space according to the results of RSM model in current generation,the feasible space will be emerging as the model errors deceasing.The results on FIBMOS examples show that the methodology is efficient.展开更多
Some effective parameters on the copper extraction from Kiire chalcopyrite concentrate were optimized by using response surface methodology （RSM）. Experiments designed by RSM were carried out in the presence of ammo...Some effective parameters on the copper extraction from Kiire chalcopyrite concentrate were optimized by using response surface methodology （RSM）. Experiments designed by RSM were carried out in the presence of ammonium persulfate （APS） and different types of impeller in an autoclave system. Ammonium persulfate concentration and leaching temperature were defined numerically and three types of impellers were defined categorically as independent variables using experimental design software. The optimum condition for copper extraction from the chalcopyrite concentrate is found to be ammonium persulfate concentration of 277.77 kg/m3, leaching temperature of 389.98 K and wheel type of impeller. The proposed model equation using RSM has shown good agreement with the experimental data, with correlation coefficients R2 and RaZaj for the model as 0.89 and 0.84, respectively.展开更多
文摘以河北地区原酒为研究对象,采用顶空固相微萃取(HS-SPME)结合气相质谱(GC-MS)联用技术,进行了挥发性成分的分离鉴定。以酯类物质峰面积比为指标,以添加无机盐的量、装液量和萃取温度为因素,应用单因素实验及响应面设计实验,优化萃取吸附工艺。结果表明,最佳萃取工艺为:添加无机盐的量0.42 g,装液量7 m L,萃取温度30℃。在此条件下,原酒中共检测出27种挥发性香气成分,其中醇类3种,酯类20种,醛类4种。此次实验不仅为河北地区白酒原酒的进一步分析奠定了基础,也为SPME-GC-MS技术的应用提供了更为广阔的前景。
文摘Device robust-design is inherently a multiple-objective optimization problem.Using design of experiments (DoE) combined with response surface methodology (RSM) can satisfy the great incentive to reduce the number of technology CAD(TCAD) simulations that need to be performed.However,the errors of RSM models might be large enough to diminish the validity of the results for some nonlinear problems.To find the feasible design space,a new method with objectives-oriented design in generations that takes the errors of RSM model into account is presented.After the augment design of experiments in promising space according to the results of RSM model in current generation,the feasible space will be emerging as the model errors deceasing.The results on FIBMOS examples show that the methodology is efficient.
基金supported by the TUBITAK(Scientific and Technological Research Council of Turkey) under the Project No:106M177
文摘Some effective parameters on the copper extraction from Kiire chalcopyrite concentrate were optimized by using response surface methodology （RSM）. Experiments designed by RSM were carried out in the presence of ammonium persulfate （APS） and different types of impeller in an autoclave system. Ammonium persulfate concentration and leaching temperature were defined numerically and three types of impellers were defined categorically as independent variables using experimental design software. The optimum condition for copper extraction from the chalcopyrite concentrate is found to be ammonium persulfate concentration of 277.77 kg/m3, leaching temperature of 389.98 K and wheel type of impeller. The proposed model equation using RSM has shown good agreement with the experimental data, with correlation coefficients R2 and RaZaj for the model as 0.89 and 0.84, respectively.
