Materials Literature
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银 nanoparticles (AgNPs ) 的物理、化学、生物化学的性质在很大程度上取决于他们位于他们的表面的尺寸，形状，尺寸分发，和 stabilizers。这研究集中了于二典型 stabilizers，也就是柠檬酸盐(市民) ，由静电的排斥保护 nanoparticles 的低分子的离子，和 polyvinylpyrrolidone (PVP ) ，由位的稳定保护 nanoparticles 的吸水的、中立、高分子的聚合物。自然 bacterioplankton 从发育营养正常促进剂被收集，闹市区湖并且暴露了 AgNPs-PVP 和 AgNPs 市民的集中(0.15 mg/L ) 到五。回答在暴露的 1， 3， 5 和…
A composite coating with inner and outer layers was prepared for the thermal protection of woven silica fiber fabrics. Using a sol mixture of a silica sol and AlF3/SiO2 particles mixed in the stoichiometric molar ratio for mullite,hollow silica spheres and short mullite fibers were added to the inner layer and outer l…
The vapor phase equilibrium analysis has been carried out for the Sb–S–O–H quarternary system using a Constrained Chemical Potential Method (CCPM). A total 24 species in vapor phase and 9 condens able constituents have been considered. The resulting data for the system have been plotted on Gibbs triangles as a functio…
Calixarene liquid crystals were important part among calixarene derivatives. The synthesis and mesomorphic properties of all kinds of calixarene liquid crystala have been discussed and reviewed. There are two methods to prepare calixarene liquid crystals. One way is to introduce the corre- sponding functional groups w…
卷的试管(CT ) 的复杂工作状况钢要求高力量和收益力量(YS ) 的低比率到张力的力量(TS ) 。合理微观结构控制是 CT 钢的一个关键问题。滚动控制并且使实验凉下来控制被二种测试的钢与不同化学作文执行发展非熄灭并且 tempered CT80 钢。在不同过程的测试的钢的机械性质都在对 CT80 的性质要求的好同意。瞬间和 Nb 内容增加改进针状的铁酸盐和 martensiteaustenite (麻省) 的转变岛。好 M/A 岛增加 TS 和 YS/TS 的减少比率的 4 vol% 。冷却的率增加也改进针状的铁酸盐转变并且提高 TS，但是在 YS/TS 的比率上有小效果。满足高力量和 YS/TS 的低比率的要求， CT80…
设计合成和表征了新型叠氮基官能团化的SIPr(bis[2,6-diisopropylphenyl]imidazolin-2-ylidene)氮杂卡宾铜配合物．这种氮杂卡宾铜配合物既可作为反应底物又可作为催化剂进行自催化的叠氮炔烃３＋２环加成反应(CuAAC. 通过这种配合物与炔烃的简单自催化反应，在常温常压条件下合成出了一种新型的基于氮杂卡宾铜配合物的超分枝l聚合物r，并通过固体核磁、红外光谱、元素分析、原子吸收光谱和Ｘ射线光电子能谱对其进行了完整的表征．
Objective:To prepare a novel biodegradable poly(2-hydroxyethylmethacrilate)(pHEMAt hydrogel as tissue engineering scaffold.Methods:The pHEMA hydrogel was synthesized by microwaveassisted polymerization using 2-hydroxyethyl methacrylale(IIEMA)as the raw material,potassium persulfate as the initiator,and PCI.X as the cr…
Mg-6%Al-1%Sn(mass fraction) alloy is a newly developed anode material for seawater activated batteries. The electrochemical properties of Mg-1%Sn, Mg-6%Al and Mg-6%Al-1%Sn alloys are measured by galvanostatic and potentiodynamic tests. Scanning electron microscopy(SEM) with energy dispersive spectrometry(EDS) is used…
The induction motor system with fluctuating potential loads is a non-linear complex electro-mechanical system.With beam pumping motors as an example,this paper proposes a multiple factor non-linear mathematical model to study the operating performance of the induction motor system.This model consists of non-linear tim…
The polarization-dependent absorption of the rectangular-block perfect absorber metamaterials in mid-infrared regime was investigated theoretically and numerically.The rectangularshaped nanostructure absorber consisting of metal-dielectric-metal layers has dual-band resonant absorption spectrum at infrared wavelength…
@MSN 在指向线粒体的药交货和 mitochondrial 酶的选择抑制被采用，并且被显示与好 biocompatibility 和高装载能力稳定。由于由 2-ME/mtMSN 的 SOD2 的选择抑制，提高了 mitoROS 的举起(那中的 132% 个与免费 2-ME ) 被获得，在开始房间 apoptosis 结合了更高的效率(那中的 395% 个与在 4 h 的免费 2-ME ) 。最后， 2-ME/mtMSN 在由利用生物识别并且磁性的指导 HeLa 房间杀死指向展出了强大的功效，引起 97.0% 房间有 2 仅仅 g/mL 2-ME/mtMSN 的死亡，在它在通过精细的 mitochondrial 的操作的癌症治疗的…
粉末催化剂 Cu-Cr-O 用于碳 nanotubes (CNT ) 的合成的一篇小说被开发，它经由氨降水方法被准备。扫描热量计(TG-DSC ) 的 thermo-gravimetric/differential 的技术， X 光检查衍射(XRD ) 以及扫描电子显微镜学(SEM ) 和传播电子显微镜学(TEM ) 被采用了分别地描绘热分解过程，晶体阶段和同样综合的材料的微结构的形态学。当先锋在 400， 500， 600，和 700 琠慨 ? 桴獩洠瑥潨 ? 獩猠極慴汢? 潦 ? 牰摥捩楴杮琠敨猠牴湥瑧 ? 景挠浯潰楳整氠浡湩瑡獥 ? 桴 ? 業牣浯 ' 炭暘 e 牴湥瑧 ? 桴潥祲椠 ? 慲歮摥戠 ? 潣灭牡湩 ? 瑩眠…
Micro/nano-structured SnS2 was prepared by a hydrothermal method using biomolecular L-cysteine and SnCl4� 5H2O as sulfur source and tin source, respectively. The electrochemical performances of SnS2 electrodes were investigated using water-soluble binders of carboxymethyl chitosan (C-chitosan) and chitosan lactate, an…
Dottorato di Ricerca in "Ingegneria Chimica e dei Materiali" Ciclo XXVI, a.a. 2013-2014
Milliseconds process to produce hydrogen by steam methane reforming(SMR) reaction, based on Ni catalyst rather than noble catalyst such as Pd, Rh or Ru, in micro-channel reactors has been paid more and more attentions in recent years. This work aimed to further improve the catalytic performance of nickel-based catalys…
),侧面的尺寸( L ),和等级(我 20 /I 26 ),建议煤雏晶是在自然的 nanocrystalline 。很强壮的关联在结构的参数之间被观察( f , d 002 , L c , H/C 比率，并且我 20 /I 26 ),不稳定的事内容，和元素的碳满足，显示煤的结构被接触变态的度控制。拉曼系列展出了二个突出的乐队：graphitic 乐队(G) 和一阶的典型缺点乐队(D) 。deconvolution 导致了五座山峰：G， D1， D2， D3，和 D4。强烈 D1 乐队，出现在 1350 厘米，啜 class= “ a-plus-plus ” > 1 , 与 A 对应于一个格子颤动模式 1g 对称。D2 模式，出现在…
在使用 micro-arc-oxidization (毛) 并且随后在不同模仿的生理的环境与 poly-L-lactic 酸(PLLA ) 封上的表面修正以后的新奇高张力 AZ31B 镁合金电线的降级行为被调查。表面毛 micropores 能身体上是的结果表演由 PLLA 封上，因此为电线形成有效保护到腐蚀抵抗。在在低 pH 价值(1.5 或 2.5 ) 的模仿的胃的液体(SGF ) ，对待的电线让高降级与质量，直径，机械性质和沉浸液体的 pH 价值的重要增加的快速的减少评价。然而，表面修正能有效地与上面的 pH 价值在 SGF 减少对待的电线的降级率 4.0。为在在 pH = 的模仿的肠的液体的对待的电线 8.5，他们的力量保…
Density functional method was used to investigate the IR spectrum,heat of formation and thermal stability of a new energetic material bis(2,2-dinitropropyl) formal(BDNPF).The detonation velocity and pressure were evaluated by using the Kamlet-Jacobs equations based on the theoretical density and heat of formation.The…
C-NMR， HMBC， XRD，和 SEM。当 starch-g-lactic 酸共聚物在 80 集中被激活并且激活碳剂量时，试验性的结果证明淀粉的最大的 grafting 度能到达 75% 。固定的床模型 consi 摈 ? 摈？？
An investigation on the mechanical and thermal properties of Yb3AI5O12 is conducted by a combination of firstprinciples calculations and chemical bond theory calculation.Density functional theory（DFT） computations were performed for the structural,mechanical,and thermal properties,and the results are confirmed by chem…