The effect of 2-butyne-1, 4-diol on silver electrodeposition process from 5, 5-dimethyl hydantoin solutions was investigated by means of cyclic voltammetric measurement, scanning electron microscopy (SEM) and X-ray di...The effect of 2-butyne-1, 4-diol on silver electrodeposition process from 5, 5-dimethyl hydantoin solutions was investigated by means of cyclic voltammetric measurement, scanning electron microscopy (SEM) and X-ray diffraction (XRD). Cyclic voltammetric studies indicate that the reduction process of silver electrodeposition is influenced by adding 2-butyne-1, 4-diol. Owing to its adsorption on the electrode surface, 2-butyne-1, 4-diol moderately hinders the mass transfer of the silver complexed ions from the bulk solution to the outer limit of the electrode double layer and affects the electrocrystallization step. Scanning electron microscopy analysis reveals that the presence of 2-butyne-1, 4-diol in the electrolyte is beneficial and the silver deposits obtained are smoother, more compact and more leveled. X-ray diffraction analysis of the silver deposits obtained at 0.5 g·L-1 2-butyne-1, 4-diol indicated that the (110) plane is the most preferred plane and is not affected by the presence of 2-butyne-1, 4-diol in the electrolyte.展开更多
目的研究厚朴抗炎有效成分(E)-5-allyl-3'-(prop-1-enyl)biphenyl-2,4'-diol(HK-1)在人、大鼠、比格犬、猴和小鼠的肝微粒体中的代谢稳定性,确定HK-1在大鼠肝微粒体中代谢表型。方法将HK-1在5个种属肝微粒体中孵育,采用UPLC-MS...目的研究厚朴抗炎有效成分(E)-5-allyl-3'-(prop-1-enyl)biphenyl-2,4'-diol(HK-1)在人、大鼠、比格犬、猴和小鼠的肝微粒体中的代谢稳定性,确定HK-1在大鼠肝微粒体中代谢表型。方法将HK-1在5个种属肝微粒体中孵育,采用UPLC-MS/MS检测方法,通过测定HK-1的剩余浓度,考察它们的代谢稳定性并外推其体内代谢清除率。化学抑制剂法鉴定在大鼠肝微粒体中HK-1的代谢表型。结果 HK-1在人、大鼠、比格犬、猴和小鼠5个种属肝微粒体中半衰期(t_(1/2))分别为9.04、7.36、2.17、4.94、18.09 min;肝微粒体中固有清除率CL_(int)分别为153.40、188.20、639.02、280.60、76.60 m L/(min·mg蛋白);体内固有清除率CL'_(int)分别为151.87、338.76、949.21、416.69、301.61 m L/(min·kg)。在大鼠肝微粒体中HK-1主要被细胞色素CYP2E1、CYP2C、CYP1A2催化代谢。结论HK-1在肝微粒体中由多种酶代谢且代谢很快,其中人肝微粒体和大鼠肝微粒体中半衰期和固有清除率相似,可将大鼠肝微粒体预估人肝微粒体不良反应的风险。展开更多
文摘The effect of 2-butyne-1, 4-diol on silver electrodeposition process from 5, 5-dimethyl hydantoin solutions was investigated by means of cyclic voltammetric measurement, scanning electron microscopy (SEM) and X-ray diffraction (XRD). Cyclic voltammetric studies indicate that the reduction process of silver electrodeposition is influenced by adding 2-butyne-1, 4-diol. Owing to its adsorption on the electrode surface, 2-butyne-1, 4-diol moderately hinders the mass transfer of the silver complexed ions from the bulk solution to the outer limit of the electrode double layer and affects the electrocrystallization step. Scanning electron microscopy analysis reveals that the presence of 2-butyne-1, 4-diol in the electrolyte is beneficial and the silver deposits obtained are smoother, more compact and more leveled. X-ray diffraction analysis of the silver deposits obtained at 0.5 g·L-1 2-butyne-1, 4-diol indicated that the (110) plane is the most preferred plane and is not affected by the presence of 2-butyne-1, 4-diol in the electrolyte.
文摘目的研究厚朴抗炎有效成分(E)-5-allyl-3'-(prop-1-enyl)biphenyl-2,4'-diol(HK-1)在人、大鼠、比格犬、猴和小鼠的肝微粒体中的代谢稳定性,确定HK-1在大鼠肝微粒体中代谢表型。方法将HK-1在5个种属肝微粒体中孵育,采用UPLC-MS/MS检测方法,通过测定HK-1的剩余浓度,考察它们的代谢稳定性并外推其体内代谢清除率。化学抑制剂法鉴定在大鼠肝微粒体中HK-1的代谢表型。结果 HK-1在人、大鼠、比格犬、猴和小鼠5个种属肝微粒体中半衰期(t_(1/2))分别为9.04、7.36、2.17、4.94、18.09 min;肝微粒体中固有清除率CL_(int)分别为153.40、188.20、639.02、280.60、76.60 m L/(min·mg蛋白);体内固有清除率CL'_(int)分别为151.87、338.76、949.21、416.69、301.61 m L/(min·kg)。在大鼠肝微粒体中HK-1主要被细胞色素CYP2E1、CYP2C、CYP1A2催化代谢。结论HK-1在肝微粒体中由多种酶代谢且代谢很快,其中人肝微粒体和大鼠肝微粒体中半衰期和固有清除率相似,可将大鼠肝微粒体预估人肝微粒体不良反应的风险。
