利用超高效液相色谱-四极杆飞行时间质谱联用技术(ultra performance liquid chromatography quadrupole time of flight mass spectrometry,UPLC-Q-TOF-MS/MS)分析蒙药狼毒(狼毒大戟)毒效部位化学成分,比较狼毒石油醚、二氯甲烷、乙酸...利用超高效液相色谱-四极杆飞行时间质谱联用技术(ultra performance liquid chromatography quadrupole time of flight mass spectrometry,UPLC-Q-TOF-MS/MS)分析蒙药狼毒(狼毒大戟)毒效部位化学成分,比较狼毒石油醚、二氯甲烷、乙酸乙酯、正丁醇部位所含化合物的差异。结果表明,通过文献及实验室建立的数据库对比,解析得68个化合物,其中有43个二萜类、5个三萜类、8个香豆素类、2个酚酸类、2个鞣酸类、3个苯乙酮类、1个甾醇类、1个生物碱类、1个脂肪酸类、1个间苯三酚类和1个其他类化合物。本研究采用的UPLC-Q-TOF-MS/MS技术为鉴定狼毒毒效部位化学成分提供了快速、高效的定性分析方法。该研究不仅为狼毒毒效部位化学成分研究以及狼毒毒性评估提供了科学依据,也为狼毒药用价值的进一步开发提供了实验基础。展开更多
This theory proposes an extended model of the electron based on the image of the screened electron in the concept of vacuum polarization of QED. The extended electron consists of a negatively charged core −q0which is ...This theory proposes an extended model of the electron based on the image of the screened electron in the concept of vacuum polarization of QED. The extended electron consists of a negatively charged core −q0which is surrounded by an assembly (an aggregation) of tiny static electric dipoles −q,+q. When subjected to an external field, electromagnetic forces are produced on these point charges to give rise to various properties of the electron. Three major properties of the electron that will be explored in this theory are: 1) the effective electric charge of the electron;2) the mechanism of the spin of the electron;3) the mechanism of radiation of the electron. The investigation of these properties leads to various innovative explanations for the generation of anti-particle, the orbital of the electron, the strong nuclear forces between nucleons … Other topics are also listed in the following content.展开更多
文摘利用超高效液相色谱-四极杆飞行时间质谱联用技术(ultra performance liquid chromatography quadrupole time of flight mass spectrometry,UPLC-Q-TOF-MS/MS)分析蒙药狼毒(狼毒大戟)毒效部位化学成分,比较狼毒石油醚、二氯甲烷、乙酸乙酯、正丁醇部位所含化合物的差异。结果表明,通过文献及实验室建立的数据库对比,解析得68个化合物,其中有43个二萜类、5个三萜类、8个香豆素类、2个酚酸类、2个鞣酸类、3个苯乙酮类、1个甾醇类、1个生物碱类、1个脂肪酸类、1个间苯三酚类和1个其他类化合物。本研究采用的UPLC-Q-TOF-MS/MS技术为鉴定狼毒毒效部位化学成分提供了快速、高效的定性分析方法。该研究不仅为狼毒毒效部位化学成分研究以及狼毒毒性评估提供了科学依据,也为狼毒药用价值的进一步开发提供了实验基础。
文摘This theory proposes an extended model of the electron based on the image of the screened electron in the concept of vacuum polarization of QED. The extended electron consists of a negatively charged core −q0which is surrounded by an assembly (an aggregation) of tiny static electric dipoles −q,+q. When subjected to an external field, electromagnetic forces are produced on these point charges to give rise to various properties of the electron. Three major properties of the electron that will be explored in this theory are: 1) the effective electric charge of the electron;2) the mechanism of the spin of the electron;3) the mechanism of radiation of the electron. The investigation of these properties leads to various innovative explanations for the generation of anti-particle, the orbital of the electron, the strong nuclear forces between nucleons … Other topics are also listed in the following content.
