To solve the nonlinear partial differential equations is changed into solving some algebraic equations by using the function U to be expressed as linear independent functions. The new soliton and periodic solution...To solve the nonlinear partial differential equations is changed into solving some algebraic equations by using the function U to be expressed as linear independent functions. The new soliton and periodic solutions of some fifth\|order nonlinear partial differential equations are obtained.展开更多
目的:建立注射用苦碟子HPLC数字化指纹图谱,为注射用苦碟子质量控制提供依据。方法:采用反相HPLC法分析注射用苦碟子水溶液,以Century SIL BDS柱(250mm×4.6mm,5μm),流动相为1%醋酸水-1%醋酸乙腈低压梯度洗脱,检测波长265nm,柱温(3...目的:建立注射用苦碟子HPLC数字化指纹图谱,为注射用苦碟子质量控制提供依据。方法:采用反相HPLC法分析注射用苦碟子水溶液,以Century SIL BDS柱(250mm×4.6mm,5μm),流动相为1%醋酸水-1%醋酸乙腈低压梯度洗脱,检测波长265nm,柱温(30±0.15)℃,进样量20μL。用"中药色谱指纹图谱超信息特征数字化评价系统3.0"软件计算不同批次的注射用苦碟子HPLC指纹图谱的色谱指纹图谱指数F和色谱指纹图分离量指数RF等42个参数进行潜信息特征数字化评价。以双参照物体系结合定量结构-性质相关(QSPR)原理标定指纹峰的表观分子量、峰位、洗脱动量数δ、折合相对积分φ。结果:以咖啡酸峰为参照物峰,确定21个共有峰,建立了注射用苦碟子HPLC数字化指纹图谱,获得了判别注射用苦碟子质量的重要数字化信息。以双定性双定量相似度法评价注射用苦碟子批间质量稳定。结论:所建立HPLC数字化指纹图谱具有较好的精密度和重现性,适用于注射用苦碟子的质量控制。数字化指纹图谱是数字中药的核心技术,双定性双定量相似度法是宏观定性定量评价中药质量的最准确和最佳技术。展开更多
The unsteady flow of an incompressible fractional Maxwell fluid between two infinite coaxial cylinders is studied by means of integral transforms. The motion of the fluid is due to the inner cylinder that applies a ti...The unsteady flow of an incompressible fractional Maxwell fluid between two infinite coaxial cylinders is studied by means of integral transforms. The motion of the fluid is due to the inner cylinder that applies a time dependent tor- sional shear to the fluid. The exact solutions for velocity and shear stress are presented in series form in terms of some generalized functions. They can easily be particularized to give similar solutions for Maxwell and Newtonian fluids. Fi- nally, the influence of pertinent parameters on the fluid motion, as well as a comparison between models, is highlighted by graphical illustrations.展开更多
文摘To solve the nonlinear partial differential equations is changed into solving some algebraic equations by using the function U to be expressed as linear independent functions. The new soliton and periodic solutions of some fifth\|order nonlinear partial differential equations are obtained.
文摘目的:建立注射用苦碟子HPLC数字化指纹图谱,为注射用苦碟子质量控制提供依据。方法:采用反相HPLC法分析注射用苦碟子水溶液,以Century SIL BDS柱(250mm×4.6mm,5μm),流动相为1%醋酸水-1%醋酸乙腈低压梯度洗脱,检测波长265nm,柱温(30±0.15)℃,进样量20μL。用"中药色谱指纹图谱超信息特征数字化评价系统3.0"软件计算不同批次的注射用苦碟子HPLC指纹图谱的色谱指纹图谱指数F和色谱指纹图分离量指数RF等42个参数进行潜信息特征数字化评价。以双参照物体系结合定量结构-性质相关(QSPR)原理标定指纹峰的表观分子量、峰位、洗脱动量数δ、折合相对积分φ。结果:以咖啡酸峰为参照物峰,确定21个共有峰,建立了注射用苦碟子HPLC数字化指纹图谱,获得了判别注射用苦碟子质量的重要数字化信息。以双定性双定量相似度法评价注射用苦碟子批间质量稳定。结论:所建立HPLC数字化指纹图谱具有较好的精密度和重现性,适用于注射用苦碟子的质量控制。数字化指纹图谱是数字中药的核心技术,双定性双定量相似度法是宏观定性定量评价中药质量的最准确和最佳技术。
文摘The unsteady flow of an incompressible fractional Maxwell fluid between two infinite coaxial cylinders is studied by means of integral transforms. The motion of the fluid is due to the inner cylinder that applies a time dependent tor- sional shear to the fluid. The exact solutions for velocity and shear stress are presented in series form in terms of some generalized functions. They can easily be particularized to give similar solutions for Maxwell and Newtonian fluids. Fi- nally, the influence of pertinent parameters on the fluid motion, as well as a comparison between models, is highlighted by graphical illustrations.
