新型碳基渗滤膜在易燃液体残留物提取检验中的应用

用自制的碳基渗滤膜,以自制的红外提取装置测定了该膜对苯的回收率为68%,考察了温度、压力、提取时间等对碳基渗滤膜应用的影响,主要介绍了将该碳基渗滤膜应用于现场易燃液体残留物的提取,通过水泥地面添加易燃液体的提取检验,棉布、化纤布上易燃液体残留物的提取检验测试了碳基渗透膜的提取回收能力.该碳基渗滤膜可以应用于纵火现场易燃液体残留物的提取检验.     

红厚壳属植物化学成份及药理活性研究进展

综述了近年来对红厚壳属植物中的化学成分及药理活性研究，重点讨论了18种 红厚壳属植物中Zhao吨酮类，香豆素类，黄酮类和萜类的化学成分，并讨论了它们 的药理活性。     

含Schiff碱基双分子膜聚集态的pH依存性

合成双分子膜是近年来出现的一类重要的超分子化学体系,它具有多方面模拟生物膜功能的性质,是目前国际上极引人注目的研究领域.含有Schiff碱基的双亲性分子(1)的稀水溶液在超声波作用下,可形成其壁为双分子膜结构的球形囊泡。示差扫描量热分析(DSC)表明,该双分子膜从凝胶相到液晶相的相变温度T_c为32℃.由于Schiff碱基在膜内的质子化行为与视网膜中视色素的光化学过程密切相关,所以研究上述合成双分子膜的质子化过程有着重要的膜模拟化学意义.本文简要报导双分子膜(1)在不     

含VE微胶囊的制备及其控制释放性能研究

以天然维生素E（VE）为芯材，利用Shirasu porous glass (SPG) 膜乳化结合液中干燥法，制备了粒径单分散的聚苯乙烯（PS）微胶囊.微胶囊的粒径为膜孔径的4倍，粒径单分散系数CV小于0.2.考察了改变PS和VE的比例及微胶囊的粒径对控制释放性能的影响.     

Enhancement of Photocurrent Generation of a Novel Stilbazolium Dye Dimer in LB Monolayer Films

A novel dye dimer,bis-{[1-(N-hexadecyl-4-pyridinium)-2-(4-N,N-dimethylaminopheyl)] ethenyl} methane diiodide (C16BP) was synthesized,and the photoelectrochemistry of the dye Langmuir-Blodgett monolayer modified ITO electrode was investigated.For comparison,the photoelectrochemistry of the monomer (E)-N-hexadexyl-4-[2-(4-N,N-dimethylaminophenyl) ethenyl] pyridinium iodide (C16P) was also measured.The results show that the photocurrent generation property of the dimer is enhanced.The photocurrent generation quantum yield is 0.38% for C16BP,while that for C16P is 0.23%.     

Electron paramagnetic resonance study of amphiphiles partitioning behavior in desiccation-tolerant moss during dehydration

Desiccation tolerance is a crucial characteristic for desert moss surviving in arid regions. Desiccation procedure always induces amphiphiles transferring from the polar cytoplasm into lipid bodies. The behavior of amphiphiles transferring can contribute to the enhancement of desiccation tolerance and the reduction of plasma membrane integrity simultaneously. The effects of amphiphiles partitioning into the lipid phase during water loss has been studied for pollen and seeds using electron paramagnetic resonance (EPR) spectroscopy. However, desiccation-tolerant high plants occur among mosses, several angiosperms and higher plants seeds or pollens. They have different strategies for survival in dehydration and rehydration. A desiccation-tolerant moss Tortula desertorum was used to investigate the behaviors of amphiphilic molecules during drying by spin label technology. There are small amount of amphiphilic probes partitioning into membrane during moss leaves dehydration, comparing with that in higher plants. Cytoplasm viscosity changed from 1.14 into glass state only dehydration less than 60 min. Moss leaves lost plasma membrane integrity slightly, from 0.115 to 0.237, occurred simultaneously with amphiphiles partition. The results showed the more advantages of mosses than higher plants in adapting fast dehydration. We propose that EPR spin label is feasible for studying the amphiphiles partitioning mechanisms in membrane protection and damage for desiccation-tolerant mosses.     

角膜内皮细胞载体膜片的性质研究及移植试验

利用溶剂浇铸/颗粒沥滤技术制备出壳聚糖和硫酸软骨素共混膜, 研究了共混膜的透光性、 表面结构、 红外图谱、 X-射线衍射图谱以及生物相容性和生物降解性. 结果表明, 共混膜透明度高, 结构均匀, 孔隙大小合适, 壳聚糖分子与硫酸软骨素达到分子水平分散， 且分子间存在较强的相互作用, 共混膜具有良好的生物相容性和生物降解性. 以共混膜为载体培养兔角膜内皮细胞, 结果表明， 共混膜非常适合角膜细胞贴附生长, 10 d内长成良好单层细胞. 将载有角膜内皮细胞的膜片植入内皮缺损兔眼中, 在56 d内术眼基本保持透明, 之后角膜水肿, 逐渐模糊并出现新生血管, 在230 d时术眼新生血管基本消失, 角膜恢复透明.     

高分子合金分离膜材料及结构研究进展

膜材料液相共混制备高分子合金分离膜不但可以调节膜材料与被分离物的亲和性，也在一定程度上改变了膜的结构。本文介绍高分子材料浓相共混对膜材料的亲水性、耐污染性及其它理化性能的影响和对膜结构的调节作用，同时指出高分子材料间的相容性是影响合金膜结构的重要因素。     

高水相W／O型乳化膏体油膜稳定性的研究

高水相Ｗ／Ｏ型乳液是指水相体积占７４％以上，属于高度不稳定的分散体系［１，２］．乳化炸药的问世，使这种高水相Ｗ／Ｏ型乳液有了新的实际应用．这种炸药是９０％～９５％重的硝酸铵盐（占水相８０％～９０％重）水溶液高度分散在５％～１０％的油相中构成Ｗ／Ｏ型乳...     

无亲水基团取代的四苯基卟吩类LB膜的制备与表征

拉制了4种无亲水基团的四苯基卟吩LB膜,用透射电镜、荧光寿命、荧光光谱和紫外-可见光谱测量表征了膜的形貌和结构,发现膜中卟吩主要以聚集体形式存在。