堇青石质蜂窝陶瓷载体表面改性前后的SEM和EDS研究

蜂窝陶瓷是一种多孔陶瓷，它具有高强度、低膨胀、耐热震性好、吸附性强、耐磨损等优点。目前，广泛应用于汽车尾气净化器、柴油机烟尘离子净化器及臭氧抑制催化剂载体。堇青石质蜂窝陶瓷载体是氧化铝、氧化镁、氧化硅按一定比例焙烧形成，由于比表面积较小，常常先采取酸浸，然后在其表面涂覆一层比表面积大的物质，如γ-Al2O3，其目的是进行表面处理形成酸性活性中心并且使载体的孔道增加，从而增加催化材料的活性。     

预应力混凝土结构系数κ和μ的分析

对预应力混凝土摩擦损失的两个关键因素——摩擦系数κ和μ进行了深入的分析和探讨 ,以期对预应力混凝土结构在设计、施工和检测中 ,从基本概念的把握上提供参考。     

利用铝（100）面隧道孔制备纳米模板及有序阵列材料

高纯铝箔通常通过电化学扩面后用作铝电解电容器的阳极材料。利用铝箔（100）面隧道孔制备纳米模板。这种纳米模板的特点是制作简单、模板面积大，纳米阵列材料形状可控性强。还利用两步电化学侵蚀铝箔的特殊工艺，研制出纵横交错的TiO2纳米有序阵列材料。     

不同方法脱铝八面沸石性质研究 Ⅱ.孔道结构研究

研究了ＳｉＣｌ４、（ＮＨ４）２ＳｉＦ６、Ｈ２Ｃ２Ｏ４及水热脱铝沸石的孔道结构。结果表明，所有脱铝方法均不能影响沸石晶粒大小的变化；ＳｉＣｌ４和（ＮＨ４）２ＳｉＦ６脱铝沸石基本上保持了沸石原有的孔道结构，而Ｈ２Ｃ２Ｏ４和水热法脱铝则可导致沸石中出现４０Ａ左右的大量中孔结构，且Ｈ２Ｃ２Ｏ４脱铝沸石的中孔孔径较为集中；在脱铝过程中，沸石的骨架崩塌以及中孔的形成都存在有某些规律性。随着沸石骨架Ｓｉ／Ａｌ比     

24米预应力钢筋混凝土折线形屋架的现场预制

冬季24m腹杆预应力钢筋混凝土折线屋架的现场预制施工方法。     

CARR水平孔道的设计特点

介绍了中国先进研究堆(CARR)水平孔道的用途、在堆本体的布置、水平孔道结构设计及设计方面的特点。     

孔道结构钒铝磷酸盐的水热合成及热稳定性

用XRD,TG-DTA,FT-IR和SEM对水热法合成的孔道结构钒铝磷酸盐(NH3CH2CH2NH2)[(VO)-Al(PO4)2]进行了热性能表征.该化合物中有机组分的分解温度,在氧化气氛中为305～529℃,在惰性气氛中为411～593℃.有机组分的分解逸出导致了结构的破坏,但晶体的微形貌没有发生明显的变化;温度继续升高,发生相变.该化合物热稳定性较其他含有机模板的孔道结构钒磷酸盐要高,主要原因在于结构中存在[AlO4]和[PO4]共顶连接而成的一维链,这种链增加了骨架的强度.     

Performances of electrically heated microgroove vaporizers

An electrically heated microgroove vaporizer was proposed. The vaporizer mainly comprised an outer tube, an inner tube and an electrical heater cartridge. Microgrooves were fabricated on the external surface of the inner tube by micro-cutting method, which formed the flow passage for fluid between the external surface of the inner tube and the internal surface of the outer tube. Experiments related to the temperature rise response of water and the thermal conversion efficiency of vaporizer were done to estimate the influences of microgroove＇s direction, feed flow rate and input voltage on the performances of the vaporizer. The results indicate that the microgroove＇s direction dominates the vaporizer performance at a lower input voltage. The longitudinal microgroove vaporizer exhibits the best performances for the temperature rise response of water and thermal conversion efficiency of vaporizer. For a moderate input voltage, the microgroove＇s direction and the feed flow rate of water together govern the vaporizer performances. The input voltage becomes the key influencing factor when the vaporizer works at a high input voltage, resulting in the similar performances of longitudinal, oblique and latitudinal microgroove vaporizers.     

介孔材料化学改性研究进展

综述了介孔材料化学改性目的，改性原理以及改性方法。介孔材料的化学改性包括对材料骨架的修饰以及对孔道表面的功能化，介孔材料表面自由硅醇键、双羟基硅醇踺是化学改性的基础，利用疏水性物质改性可以提高材料的水热稳定性，引入催化活性组分可以提高催化性能，利用具有特定官能团的硅烷偶连剂改性，则能够实现特殊的目的。详述了化学改性方法，包括元素取代法、共价键移植法和有机硅烷偶连法。元素取代法是对分子筛骨架结构的修饰，共价键移植法是一种不引起孔道结构破坏且非常有效的骨架修饰方法，对介孔材料表面进行有机硅烷偶连剂法修饰改性主要有两种途径：即共沉淀法和后移植法。     

电致孔经皮给药：表面活性剂对孔道存在时间和药物传输的影响

Electroporation creates aqueous pathways by short high-voltage pulses resulting in a transient perme- abilization of stratum corneum and an increase in the transdermal delivery rate.However the aqueous pathways will reseal after pulsing,which leads to the rapid drop of transdermal flux.In the present study,the surfactants were added to the donor solution to hinder the shrinkage and resealing of the electropore,and to prolong the lifetime of the aqueous pathways with the consideration that the surfactants could reduce the surface energy of the electropore. These effects of surfactants were demonstrated by the dynamic electrical resistance of the skin and the fluorescent imaging of the local transport regions.Piroxicam（PIX）was transported percutaneously in the presence of surfactants in vitro.Owing to the longer lifetime of aqueous pathways,together with the promotion of PIX availability at the barrier exterior and the improvement in the partition of PIX into the aqueous pathways,the presence of surfactants led to a remarkable increase in the transdermal delivery rate during electroporation and a significant growth of the accumulative transdermal amount of PIX.