无名异冲剂促进去卵巢大鼠骨质疏松性骨折愈合的机制研究

为探讨无名异冲剂促进去卵巢 SD大鼠骨质疏松性骨折愈合的机制 ,用 48只 6月龄雄性 SD大鼠建立骨质疏松性骨折模型 ,随机分为模型组、跳骨片组、仙灵骨葆组、无名异冲剂组 ,于灌胃后 2周、4周取材 ,观察 X线片、骨密度、光镜 ,骨痂钙、磷、胶原含量 ,结果显示灌胃第 2周时 ,各组动物各项指标均无显著性差异 ;第4周时 ,无名异冲剂组的骨密度 ,骨痂钙、磷、胶原含量的检测结果与模型组有显著性差异 ( P<0 .0 5 ) ,X线及光镜观察骨痂的生长情况 ,无名异冲剂组也优于模型组 ,说明无名异冲剂能够通过提高骨密度 ,改善骨骼钙、磷、胶原的代谢 ,促进骨折端骨痂的生长 ,达到治疗骨质疏松性骨折的目的。     

无名异炮制乳香的最佳工艺研究

目的探讨无名异制乳香的炮制工艺。方法以水浸提物挥发油含量及醇浸提物量为主要考察指标,采用正交设计筛选工艺。结果用无名异炮制的乳香,加9倍量水,提取6 h,以中火炒制,20%无名异和5%醋的炮制品中挥发油的含量和醇浸出物含量最高。结论火候、无名异和醋的用量是影响无名异制乳香中挥发油含量和醇提取物量的重要因素。该工艺是在生产条件下优选出的,对指导生产有参考价值。     

对矿物药无名异的鉴定

对7个地区所用无名异的样品进行形态、物理性质、光谱分析(红外与发射光谱)等项研究,并与对照标准品软锰矿进行比较,结果表明现国内药材无名异均为褐铁矿,而文献记载应为软矿锰。因此哪一种是中药无名异的正品矿物来源,应作深入考察。     

Nanosize Control on Porous β-MnO2 and Their Catalytic Activity in CO Oxidation and N2O Decomposition

A major challenge in the synthesis of porous metal oxides is the control of pore size and/or wall thickness that may affect the performance of these materials. Herein, nanoporous β-MnO₂ samples were prepared using different hard templates, e.g., ordered mesoporous silica SBA-15 and KIT-6, disordered mesoporous silica, and colloidal silica. These samples were characterized by Powder X-Ray Diffraction (PXRD), Transmission Electron Microscopy (TEM), and N₂ adsorption-desorption. The pore size distribution of β-MnO₂ was tuned by the different hard templates and their preparation details. Catalytic activities in CO oxidation and N₂O decomposition were tested and the mesoporous β-MnO₂ samples demonstrated superior catalytic activities compared with their bulk counterpart.