Materials Literature
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Article Information Aluminium (1100) is an extensively used material in the application of water line and drainage applications. If the aluminium (1100) surface contacts the water, an oxide layer will be formed and it prevents the corrosion of aluminium (1100) when compared to other metal and also it has less weight.…
The elevated-temperature mechanical properties and thermal stability of Al-Cu-Mg-Ag heat-resistant alloy were studied by tensile test, transmission electron microscopy(TEM) and scanning electron microscopy(SEM), respectively. The results show that with the increase of Ag content, the tensile strength and yield strengt…
A single mold Gasar process was developed to fabricate lotus-type porous copper with long and straight pores.The effects of withdrawing rate on the solidification front shape,pore morphology and average solidification rate of porous copper ingots were investigated through experimental study and Procast simulation.The…
在有金属的激进的阴离子 ligands 和他们的建筑群的研究的最近的进步在这评论被总结。激进的阴离子被排序进包括 iminosemiquinonate 和 iminoquinonate 基，的几种类型 nitroxide 基， heterocycle 激进分子等等。相应建筑群的结构的特征和性质被介绍。建筑群在器官的磁性的材料和转变金属催化作用为应用展出了新奇性质和可能性。
Objective To harvest pancreatic tissues from rats,prepare decellularized bio-derived pancreatic scaffolds( DBPS),and to examine the integrity and biocompatibility of the scaffolds. Methods Normal pancreases were harvested from healthy adult SD rats. DBPS was prepared by perfusing SDS and Triton X-100 through bile duct…
An ultra-compact wavelength filter on silicon-based hybrid plasmonic waveguide is proposed and simulated.The present hybrid plasmonic structure needs only one layer to be patterned and is favorable for fabrication.The light is confined strongly in a thin silica dioxide layer between the metal substrate and silicon top…
采用溶胶-凝胶法制备对硝基苯氨基甲酸酯化β-环糊精毛细管开管柱（NCDP）,建立了分别拆分钙离子阻滞剂盐酸马尼地平和盐酸尼卡地平对映体的毛细管电色谱方法。采用红外光谱、扫描电子显微镜对其进行了必要的结构及形态表征。在极性有机模式下,考察了有机溶剂的组成及含量、三乙胺和冰醋酸的含量、运行电压、温度对手性分离的影响。优化的条件为：温度20℃,检测波长236 nm,压力进样（3.448 k Pa×3 s）,盐酸马尼地平在乙腈-甲醇-三乙胺-冰醋酸（体积比57∶43∶0.05∶0.07）流动相中,运行电压25 k V时,分离度（RS）为1.39;盐酸尼卡地平在乙腈-甲醇-三乙胺-冰醋酸（体积比55∶45∶0.05∶0.08）流动相中,运行…
底抵抗的记忆被考虑了是有在非不稳定的存储器，逻辑电路和 neuromorphic 计算的应用程序的未来信息技术的一个潜在的候选人的稳固的电解质。一个传导性的细丝模型通常被接受了是为抵抗切换的内在的机制。然而，如此的传导性的细丝的生长动力学仍然不充分被理解。这里，我们与电场分发和几个另外的因素由细丝生长的相关观察探索细丝生长的可控制性。细丝生长行为被记录了在 situ 传播电子显微镜学使用。由学习即时记录细丝生长行为和形态学，我们能根据我们的观察模仿电场分发。另外的因素也被显示了影响细丝生长，例如加热的朱尔和电解质基础结构。这个工作提供卓见进进 nanoionic 的进一步的功能的传导性的细丝和愿望帮助指南研究的可控制的生长抵抗记忆。
In the present work the refinement of X-ray data have been used to solve different scientific problems, namely drug localization in the liposome wall, reaction kinetics of the small molecule upon excitation and resolving an ensemble of protein structures at different temperatures. The common approach included collecti…
多态的水晶结构上的结晶化温度和混合比率的效果 poly (丁烯 adipate )( PBA )在里面(丁烯 succinate )( PBS ) poly ， /poly (丁烯 adipate )( PBS/PBA )相配借助于微分扫描被学习热量测定( DSC )，宽角度的X光检查衍射( XRD )和原子力量显微镜学( AFM )。PBA 的多型性能被混合比率甚至在一个非等温的结晶化过程调整，这被揭示。结果证明高温度赞成在扁平上晶体，当低温度贡献边在最前晶体时。PBA 的结晶化机制上的混合比率的效果与结晶化温度的是很好重合的，这也被发现。在 PBS/PBA 混合的 PBS 内容的增长产生 PBA 的更多的形式晶体。为有低 PB…
Lanthanide luminescent complexes have attracted considerable interests in broad fields due to the rich photophysical properties of 4f electron transition levels.Introduction of antenna groups for the lanthanide complexes can cover the shortage of low absorption coefficient due to inhibition of f-f transition.Among whi…
(EBW ) 电子横梁焊接广泛地在钛合金的制造被使用了为飞机引擎的焊接 blisk。在焊接的合金电子横梁(EBW ) 连接的钛上基于疲劳裂缝生长测试，骨折的机制在扫描电子显微镜(SEM ) 下面被调查。那疲劳裂缝生长率作为试验性的负担增加的结果表演在一样的压力比率和压力紧张因素范围下面增加。在裂缝生长的开始，疲劳快克的延期机制是劈开骨折的典型机制。在稳定的 extention 阶段，快克第一沿着焊接缝接延长。然后，击碎生长方向变化沿着贱金属延长。在焊接缝接的疲劳快克的扩展机制是劈开骨折的主要机制和在贱金属的疲劳快克的扩展机制是疲劳乐队的主要扩展机制。在即时破裂阶段，疲劳快克的延期机制是典型酒窝类型静电干扰破裂机制。裂缝生长被常规有…
在最后二十年，小镁矩阵 composites 由于他们的优秀机械、物理的性质是材料地的热问题，例如，高度特定的力量和模量，好穿抵抗，和抑制能力。作为与铝矩阵 composites 相比，镁矩阵 composites 在他们的特定的重量有优点并且在太空和航空的域有宽应用程序。通常，为镁矩阵 composites 的处理技术能作为常规、特殊被分类处理线路。在最近的年里，作为一条特殊处理线路，金属融化渗入进它增强的陶艺的大量的部分的低费用和可获得性展示的多孔的陶器的预先形成一直在收到许多注意。在这评论，因此，一个重音与工具联合被放在对这种处理技术的描述上获得好 wettability，为这种处理方法的前提。基于公认的事实在那里存在在陶艺…
高温度耐久性上的进一步的改进除了高特定的力量是最重要的目的之一，高特定的僵硬，并且优秀穿抵抗，增强了钛矩阵 composites (DRTMC ) 不连续地设计并且制作。他们的优异性质使他们变为广泛在太空和军事工业的申请潜力由于对有无足轻重的人，高力量，高僵硬和高度的特征的材料的迫切要求温度耐久性。与制造方法和房间温度性质上的开发，测试，描绘，评估并且进一步增加 DRTMC 的高温度性质正在变得越来越重要支持他们的应用。这评论在高温度上提供卓见和理解张力的性质， superplastic 张力的性质，爬行为，和 DRTMC 的高温度氧化行为，和研究建议改进 DRTMC 的高温度性质推进被给。
Activated carbon aerogels(ACAs) derived from sol-gel polycondensation of resorcinol(R) and formaldehyde(F) were pyrolyzed under Ar flow and activated in CO2 atmosphere. The morphology of ACAs was characterized by scanning electron microscopy(SEM) and the structural properties were determined by N2 adsorption at 77 K.…
Folding rate prediction plays an important role in clarifying the protein folding mechanism. In this work, we collected 115 protein samples with known folding rates including two-, multi-, and mixed-state proteins.To characterize the primary structure information of the protein molecules more comprehensively, we consi…
采用水热合成法在Si O2-Ti O2-Mn O2-（TEA）2O-H2O-NH4F体系中合成了Ti-Mn-β沸石。运用X射线衍射、红外光谱、固体紫外可见漫反射、热重-差热、扫描电子显微镜和X射线光电子能谱等技术手段对样品进行了表征,探讨了影响Ti-Mn-β沸石合成的因素。Ti-Mn-β沸石在以H2O2为氧化剂的苯酚羟基化反应中表现出较好的催化活性,苯酚的转化率为29.8%,邻苯二酚和对苯二酚的选择性分别为70.9%和26%。
Bimetallic Fe-Mn nano catalysts supported on carbon nanotubes(CNTs) were prepared using microemulsion technique with water-to-surfactant ratios of 0.4-1.6. The nano catalysts were extensively characterized by different methods and their activity and selectivity in Fischer-Tropsch synthesis(FTS) have been assessed in a…
Semiconductor nanostructures occupy the center of scientific interest because of their unique electronic nature. Among them, nanowires (NWs), also known as “nanorods” or “nanowhiskers,” are especially attractive for nanoscience studies. While their diameters are in the nanometer range, they can have lengths in the ten…
Poly (vinylidene 氟化物)(PVDF ) 并且 poly (丁烯 succinate-co-24 mol% hexamethylene succinate )(PBHS ) ，两水晶的聚合物，形成的融化能溶合的水晶 / 水晶的聚合物混合。典型衍射山峰和 nonisothermal 融化部件在混合被发现的各个的结晶化山峰，显示独立使结晶的那 PVDF 和 PBHS。每个部件的水晶的形态学和结晶化动力学为 PVDF/PBHS 混合在不同结晶化条件下面被学习。spherulitic 生长率和外套等温融化混合 PVDF 的结晶化率与增加 PBHS 作文减少了并且是比整洁的 PVDF 的那些低的，当结晶化温度在 PBHS 的…