A case study: the evolution of a "facilitator model" liaison program in an academic medical library     

JE Crossno  CH Deshay  MA Huslig  HG Mayo  EF Patridge 《Journal of the Medical Library Association : JMLA》2012,100(3):171-175

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Increase in calcium content of erythrocyte and its significance to the function of enzyme calcium activated neutral protease (CANP) activity in β- thalassemia homozygotes and heterozygotes     

CH. V. Ramana Devi  M. P. J. S. Anandaraj 《Indian journal of clinical biochemistry : IJCB》1994,9(1):21-23

The enhanced presence of calcium in the erythrocytes of thalassemia homozygotes along with an increase in cytosolic and membrane bound CANP, and a decrease in membrane glycoprotein and total membrane sulfhydryl groups are statistically significant changes.In vitro loading of erythrocytes with calcium in the presence of lonophore A₂₃₁₈₇ caused similar changes pointing to the significance of calcium mediated proteolysis, especially by CANP in preparing erythrocytes for the phagocytic event.  相似文献   

广东紫珠总黄酮提取工艺优化及含量测定     

唐玉莲  易凯  史外鹏  卢求钧 《怀化学院学报》2014,(5):5-8

采用正交试验L9（3^4）,对加热回流提取和超声提取优化广东紫珠总黄酮的提取工艺进行了比较研究.以提取物中总黄酮得率为评价指标,利用紫外分光光度法测定黄酮的含量.结果表明,加热回流提取的最佳工艺条件为A1 B3 C2,即乙醇浓度为60％、水浴温度为80℃、提取时间为2 h;超声法为A2 B1 C2,即乙醇浓度为70％、固液比为1：20、超声40 min.芦丁对照品9.4～75.2μg·mL^1范围内与吸光度呈良好的线性关系.加热回流提取法优于超声法,黄酮提取率达到9.27％.  相似文献