团簇离子Fe_nP_m~+结构的量子化学研究

对激光等离子体反应生成的原子团簇 Ｆｅｎ Ｐｍ ＋ （ｎ＝ １～３， ｍ ＝ ２～１２）进行了量子化学从头算研究， 对可能的几何结构进行了试探性计算， 并对其中较稳定构型进行结构优化． 结果表明： Ｆｅ Ｐｍ ＋ 中， Ｆｅ 倾向与 Ｐ形成多配位磷化物． 其中 Ｆｅ Ｐ６＋ 较稳定． 同时， 铁与磷易形成多铁磷化物．讨论了 Ｆｅ２ Ｐ５＋ ～ Ｆｅ２ Ｐ８＋ ， Ｆｅ３ Ｐ２＋ ～ Ｆｅ３ Ｐ１２＋ 不同构型对其稳定性的影响

Effects of the Xitongxiao prescription on apoptosis and proliferation of chondrocytes in knee

目的：探讨膝痛消方对促进软骨细胞增殖和抑制IL-1β诱导的软骨细胞凋亡的作用。方法：体外培养膝关节软骨细胞，用阿利新蓝染色方法检测软骨细胞蛋白多糖，用Ⅱ型胶原免疫荧光染色检测软骨细胞Ⅱ型胶原的表达，以鉴定软骨细胞；用MTS检测软骨细胞的增殖；用IL-1β诱导软骨细胞凋亡，AnnexinV/PI双染检测细胞凋亡。结果：膝关节剥离得到的细胞形态为多角形或梭形，阿利新蓝与Ⅱ型胶原免疫荧光染色均呈阳性，证明分离培养的细胞为软骨细胞。MTS实验结果发现膝痛消方提取物处理软骨细胞后检测到的OD值随浓度增加而增加且显著高于对照组。此外，IL-1β处理诱导软骨细胞凋亡，而膝痛消方提取物能够有效地抑制IL-1β引起的细胞凋亡。结论：膝痛消方能促进软骨细胞的增殖，抑制IL-1β诱导的软骨细胞的凋亡。以上发现为膝痛消方临床上治疗膝关节骨性关节炎提供药理作用依据。Objective:To investigate the effects of the Xitongxiao prescription on the cell proliferation and the inhibition of IL-1β-induced apoptosis of chondrocytes.Methods:To identify chondrocytes,the articular chondrocytes were cultured in vitro;staining with alcian blue was used to detect the protein polysaccharide,and staining with collagen immunofluorescence was used to examine the expression of type II collagen in chondrocytes.The proliferation of chondrocytes was determined by MTS.Apoptosis of chondrocytes was induced by IL-1β,and the effect of apoptosis was tested by Annexin V/PI double staining.Results:The morphology of the cells obtained from the knee joint was polygonal or fusiform.The tested results of Alcian blue and collagen immunofluorescence staining were positive.These together certified that the isolated cells were knee chondrocytes.MTS assay results showed that the detected OD values were dosedependently increased and they were significantly higher than those of the control group.In addition,the apoptosis of chondrocytes was induced by IL-1βtreatment.While the extract of the Xitongxiao prescription could effectively inhibit the IL-1β-induced apoptosis of chondrocytes.Conclusion:The Xitongxiao prescription could promote the proliferation of chondrocytes and inhibit the apoptosis of chondrocytes induced by IL-1β.The above findings may provide one of pharmacological mechanisms of the Xitongxiao for clinical treatment of knee osteoarthritis.厦门市科技计划项目(3502z20144031);福建省自然科学基金计划资助项目(2015J01065)

基于互信息的四螺旋模型创新协同度研究

本文分析了&ldquo;政-产-研&rdquo;三螺旋模型的局限性和第四螺旋现有研究的不足之处，提出了以科技服务机构为第四螺旋构建&ldquo;政-产-研-服&rdquo;四螺旋模型的观点。随后，本文基于互信息和三螺旋算法设计了四螺旋创新协同度计量指标Tgias，并采用各主体科技论文产出数据作为其创新产出表征，利用Tgias指标量化测度了四螺旋各主体间的创新协同程度。量化分析结果表明，科技服务机构加入螺旋结构后全方位提升了政-产、政-研、产-研、政-产-研既有的协同度，反映出科技服务机构作为第四螺旋对原有三螺旋体系创新发展的催化和促进作用。对四螺旋模型的研究和应用有利于提高科技情报、技术转移等方面工作的协同创新效率。</p

Determination of Compound Vitamin B Tablets by Capillary Electrophoresis

建立了毛细管电泳测定复合维生素B片中维生素B1、维生素B2、烟酰胺含量的方法。方法 :缓冲液为 0 .0 2mmol/L硼酸盐溶液 ,毛细管电泳柱为 5 0 μm× 5 0cm ,检测波长为 2 0 0nm。 结果 :回收率为 98.7%～ 10 1.0 % ,相对标准偏差为 1.8%～ 3.2 %。结论 :本方法简便、快速、可靠OBJECTIVE: To establish a method for the simultaneous determination of vitamin B1, vitamin B2 and nicotinamide in compound vitamin B tablets by capillary electrophoresis. METHOD: The electrophoretic medium was composed of 0. 02mol/L borate solution. The uncoated capillary used was 50μm×50cm. The detection wanelength was at 200nm. RESULTS: The recoveries ranged from 98.7% to 101.0% with relative standard deviations from 1.8%～3.5%. CONCLUSION: This method was simple, rapid and reliable

Simultaneous Determination of Water-Soluble Vitamins with Capillary Electrophoresis

建立了高效毛细管电泳同时测定水溶性维生素制剂中的维生素 B1、维生素 B2、维生素 B6、维生素 B12、维生素 C、烟酸、烟酰胺等的方法。缓冲液为 0 .0 2 mol/ L的硼酸溶液 ,毛细管为 5 0μm× 5 0 cm,检测波长为 190 nm (适用于维生素 B1、维生素 B6、维生素 B12、烟酸、烟酰胺 )和 2 6 5 nm(适用于维生素 B2、维生素 C) ,分离度高 ,方法简便。A simple, rapid and efficient method for the simultaneous assay of vitamin B1, vitamin B2, vitamin B6, vitamin B12, vitamin C, nicotinic acid and nicotinamide by capillary electrophoresis has been established. The experimental conditions were as follows: the electrophoretic medium was composed of 0.02 mol/L boric acid solution, uncoated capillary used was 50 cm×50 μm id. and detection was carried out at 190 nm (to vitamin B1, vitamin B6, vitamin B12, nicotinic acid and nicotinamide) and 265 nm (to vitamin B2, vitamin C).福建省卫生厅青年科研基金!课题 ( 960 1

基于大学生化学实验大赛的无机化学实验教学设计

介绍了福建省第二届大学生化学实验大赛无机化学实验考试的基本情况,分析了存在的问题。并以大赛试题为案例,针对存在的问题,结合翻转课堂模式,详细设计新的教学方案,实现真正意义的教学互动,切实提高实验教学水平。福建省本科高校教育教学改革项目(FBJG20180097);;厦门大学教学改革研究项目(JG20180105,JG20180132

庚型肝炎病毒基因在大肠杆菌中表达的初步研究

利用原核表达载体 pRSET或 (和 )pGEX在大肠杆菌内表达了覆盖庚型肝炎病毒 (HGV)C NS3和NS5区的多段基因。CE1、E2、NS3、NS5及NS3 NS5嵌合基因等的 8段基因均有高效表达 ,各重组蛋白产量与菌体总蛋白之比在 10 %～ 35 %之间。对以上重组蛋白进行免疫学筛选 ,证实其中 7个重组蛋白均具免疫学活性 ,在一定程度上确定了重组HGV抗原表位的分布 ,为HGV的血清学和免疫学诊断试剂的研究奠定了坚实基