Using MgSO4 and NaOH solutions as starting materials, the whisker of 5Mg(OH)2·MgSO4·2H2O has been prepared by hydrothermal method at 160℃ for different time. The whisker was separated, washed by water, etha...Using MgSO4 and NaOH solutions as starting materials, the whisker of 5Mg(OH)2·MgSO4·2H2O has been prepared by hydrothermal method at 160℃ for different time. The whisker was separated, washed by water, ethanol and ether,and characterized by chemical analysis, XRD, IR and microphotography. The growth time of whisker would affect its morphology.展开更多
Nanocrystalline MgSO\-4·5Mg（OH）\-2·3H\-2O were prepared by the hydrothermal reaction at 140 ℃ for 24 h. Nanoparticle samples were characterized by FTIR, TG, DSC, XRD and TEM. The size distribution of nano...Nanocrystalline MgSO\-4·5Mg（OH）\-2·3H\-2O were prepared by the hydrothermal reaction at 140 ℃ for 24 h. Nanoparticle samples were characterized by FTIR, TG, DSC, XRD and TEM. The size distribution of nanocrystalline is in the range of 10\20 nm, the mean size is 16 nm.展开更多
The isothermal solubility of Rb 2CO 3 C 2H 5OH H 2O ternary system at 40℃ has been determined.The result was used for purification of the Rb 2CO 3 commercial product.
文摘【目的】研究连翘叶提取物(Forsythia suspensa leaves extract,FSLE)对孕马血清促性腺激素(pregnant mare serum gonadotropin,PMSG)在肝脏中代谢的影响,改善在畜牧生产中因PMSG代谢缓慢而造成的氧化应激。【方法】采用半仿生酶醇法提取连翘叶有效成分,给予昆明雌鼠不同含量的FSLE进行动物体内试验;收集小鼠血清,进行酶联免疫吸附试验,检测各组小鼠血清中PMSG的质量浓度;采集小鼠肝脏组织,检测氧化应激指标谷胱甘肽、超氧化物歧化酶、丙二醛和过氧化氢的水平;采用Western-blot检测小鼠肝脏组织孕烷X受体(pregnane X receptor,PXR)和细胞色素酶P45017A1(cytochrome P45017A1,CYP17A1)蛋白的表达水平。【结果】FSLE可显著降低小鼠血清中PMSG的质量浓度,且可以减缓PMSG代谢引起的氧化应激。Western-blot结果显示:FSLE可显著下调小鼠肝组织中PXR和CYP17A1蛋白的表达。【结论】连翘叶提取物可能是通过下调肝脏中PXR和CYP17A1的表达减缓PMSG代谢引起的氧化应激。
文摘Using MgSO4 and NaOH solutions as starting materials, the whisker of 5Mg(OH)2·MgSO4·2H2O has been prepared by hydrothermal method at 160℃ for different time. The whisker was separated, washed by water, ethanol and ether,and characterized by chemical analysis, XRD, IR and microphotography. The growth time of whisker would affect its morphology.
文摘Nanocrystalline MgSO\-4·5Mg（OH）\-2·3H\-2O were prepared by the hydrothermal reaction at 140 ℃ for 24 h. Nanoparticle samples were characterized by FTIR, TG, DSC, XRD and TEM. The size distribution of nanocrystalline is in the range of 10\20 nm, the mean size is 16 nm.
文摘The isothermal solubility of Rb 2CO 3 C 2H 5OH H 2O ternary system at 40℃ has been determined.The result was used for purification of the Rb 2CO 3 commercial product.
