再生丝素蛋白-壳聚糖包药微囊的质量研究

以模型药物消炎痛(吲哚美辛)作为芯料，在W／O型乳化体系中分别以复凝聚法制备再生丝素蛋白-壳聚糖包药微囊和以单凝聚法制备壳聚糖包药微囊，测试并分析了两种微囊的形貌、粒径、成囊率、包囊率和释药率等质量指标。结果表明，丝素-壳聚糖包药微囊的成囊率、包囊率比壳聚糖包药微囊高，药物缓释效果更好。     

聚乙二醇-丝素共混膜物理性能的研究

不同相对分子质量的聚乙二醇(PEG)以不同比例混入丝素可形成共混丝素膜，并具有良好的拉伸性、透水、透；气、透光性和一定的生物降解与溶解性。实验结果表明：虽PEG和丝素的可混合性稍差，但在一定的透水、透汽性和较好的柔韧性前提下，可达到创面膜的基本要求。     

丝素蛋白在组织工程中的应用

丝素蛋白作为一种具有优良生物相容性的天然高分子材料在生物医用领域有着广泛的应用，着重阐述了丝素蛋白在组织工程领域中应用研究的最新进展。     

Silk Performer在Web压力测试中的应用

随着Web应用系统的广泛应用,Web系统的性能越来越引起人们的广泛关注。压力测试是验证Web系统性能的重要手段。着重论述了压力测试的方法和指标,简单地介绍了Web压力测试工具Silk Performer,并通过实例详细的介绍了Web压力测试的流程,以及如何通过对于压力测试结果数据进行分析来调整系统的性能。     

制丝工艺CAD系统软件设计

论述了制丝工艺ＣＡＤ系统的新配置、软件工艺流程及系统文件与数据库结构设计方法．用１８个文件（包括８个数据库文件和１０个程序文件）编译成对应的ｆｏｘ文件．所设计软件可执行茧质调查数据录入、自动缫丝工艺设计及相应的煮茧工艺设计等任务,并给出茧质调查数据分析结果,可生产等级生丝产品的规格及全套煮茧、缫丝工艺单     

再生丝素与无机纳米粒子复合膜的结构与性能

用溶胶-凝胶法制备了纳米二氧化钛再生丝素复合膜,并用扫描电镜(SEM)、X射线(XRD)、热重分析(TGA、DTG)对复合丝素膜的结构与性能进行了表征。结果表明:加入纳米二氧化钛颗粒后再生丝素膜的热转变温度提高;再生丝素的结晶构象由S ilk I向S ilk II转变,结晶度增加。     

Molecular mechanisms of spider silk

Spiders spin high-performance silks through the expression and assembly of tissue-restricted fibroin proteins. Spider silks are composite protein biopolymers that have complex microstructures. Retrieval of cDNAs and genomic DNAs encoding silk fibroins has revealed an association between the protein sequences and structure-property relationships. However, before spider silks can be subject to genetic engineering for commercial applications, the complete protein sequences and their functions, as well as the details of the spinning mechanism, will require additional progress and collaborative efforts in the areas of biochemistry, molecular biology and material science. Novel approaches to reveal additional molecular constituents embedded in the spider fibers, as well as cloning strategies to manipulate the genes for expression, will continue to be important aspects of spider biology research. Here we summarize the molecular characteristics of the different spider fibroins, the mechanical properties and assembly process of spidroins and the advances in protein expression systems used for recombinant silk production. We also highlight different technical approaches being used to elucidate the molecular constituents of silk fibers. Received 28 February 2006; received after revision 14 April 2006; accepted 22 May 2006 X. Hu and K. Vasanthavada contributed equally to this work.     

高比例兔毛混纺高支纱的工艺研究

利用国产毛、棉设备结合，以蚕丝作为混纺原料，采用40／60真丝／兔毛配比，研究高比例兔毛混纺高支纱的混纺工艺．针对兔毛可纺性差，毛脆易断，加工和穿着过程中易掉毛，单强低，静电大，难以开发轻薄性产品等弱点，在设备选型、设备参数及工艺技术上做了研究和改进．按照制定的工艺条件和选择原料配比，纺制出了条干均匀、毛羽较少的高比例精纺型兔毛真丝高支纱，可用于机织和针织．     

Braiding Parameters of Medical Silk Braided Suture

The relationships between braiding parameters and properties of medical silk braided suture are investigated. Experimental results indicate that the main factors affecting the suture properties include the proportion of core silk and shell silk, braiding density and braiding tension. The results show that the braiding technology significantly influences the suture properties and the optimal braiding parameters were obtained by using the regression method.     

关于脆弱生丝织造性能的研究

将正常生丝、脆弱生丝、经柔软剂处理的脆弱生丝一起作为经丝上机织造,比较它们织造过程中断头、张力情况,并对织物的拉伸性能、染色性能作对比分析,结果表明:脆弱生丝经柔软处理后断头次数明显减少,织物强力有所增加,但与正常生丝一起染色存在色差.