Materials Literature
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Native corn starch(NCS) was acetylated by a microwave-assisted method using vinyl acetate(VAc) as an acetylating agent and potassium carbonate K2CO3as a catalyst. Acetylated corn starch(ACS) was characterized by Fourier-transform infrared spectroscopy(FT-IR), scanning electron microscopy(SEM), and X-ray diffraction(XR…
The semiconducting properties of passive films grown on 00Cr13Ni5Mo2 supermartensitic stainless steel were investigated in comparison with conventional 2Cr13 martensitic stainless steel.Cyclic voltammetry and electrochemical impedance spectroscopy(EIS)were used for the studies.00Cr13Ni5Mo2 steel exhibited a good corro…
Dynamic mechanical properties of CRTS II type cement and asphalt mortar(CA mortar) for high-speed railway was studied by split Hopkinson pressure bar(SHPB), and the corresponding dynamic constitutive model was established in present paper. The experimental results show that the peak strength of CA mortar increases gra…
All-graphene 设备是有简单布局和低接触电阻的 graphene 设备的新班。这里，我们为 all-graphene 设备报导干净制造策略经由一帮助缺点的各向异性的蚀刻。同样制作的 graphene 没有污染并且保留太古的 graphene 的质量。在在一条 bilayer graphene 隧道和一个多层的 graphene 电极之间的房间温度(RT ) 的接触抵抗能象 5 一样低
Electrolysis of ammonia in alkaline electrolyte solution was applied for the production of hydrogen. Both Pt-loaded Ni foam and Pt-Ir loaded Ni foam electrodes were prepared by electrodeposition and served as anode and cathode in ammonia electrolytic cell, respectively. The electrochemical behaviors of ammonia in KOH…
Combining a detailed catalytic surface reaction mechanism with noble metal and promoter elementary reactions, a new three-way catalytic converter(TWC) reaction mechanism is established. Based on the new mechanism, steady condition numerical simulation is carried out, and the change of light-off temperatures and conver…
Poly(lactic acid)-b-poly(ethylene glycol)(MePEG-b-PLA) based nanocapsules containing perfluorohexane were fabricated through a double emulsion-solvent evaporation method.In the preparation,three kinds of hydrophilic polymers,i.e.,poly(vinyl-alcohol)(PVA),chitosan(CS),and carboxymethyl dextran(CMG) were used as emulsif…
Effect of Ce-Mg-Si(light RE) and Y-Mg-Si(heavy RE) nodulizers on the microstructures and mechanical properties of heavy section ductile iron was investigated to develop the material of spent-nuclear-fuel containers. Two as-casts were treated by the same quality percentage of light RE and heavy RE, respectively. Four p…
The influence factors and paths of methane formation during methanol to hydrocarbons(MTH) reaction were studied experimentally and thermodynamically. The fixed-bed reaction results show that the formation of methane was favored by not only high temperature, but also high feed velocity, low pressure, as well as weak ac…
Pt:Pd:Co ternary alloy nanoparticles were synthesized by sodium borohydride reduction under nitrogen,and were supported on carbon black as catalysts for methanol and formic acid electro-oxidation.Compared with Pt(0.65Co0.35/C,Pt/C,Pd0.65Co0.35/C and Pd/C catalyst,Pt0.35Pd0.35Co0.30/C exhibited relatively high durabili…
4-butyl-1-(4-hydroxyphenyl ) 的 Lanthanide (III ) 建筑群 -2-phenyl-3,5-pyrazolidinedione (OPB ) 被同类的降水准备。稳固的建筑群被元素的分析，磁性的危险性数据，臼齿的传导性大小和红外描绘，紫外力，质量， 1H NMR 和 13C NMR 光谱方法。在静态的空气空气下面的建筑群的热分解被同时的 TG/DTG 以 10 椠据敲獡摥愠 ? 的加热的率调查 ? 畦据楴湯漠 ? 桴 ? 潩楮 ? 慲楤獵漠 ? 潤慰瑮椠湯
透明金属氧化物 nanowires (NW ) 在最近的年里吸引了强烈研究兴趣。我们这里报导有趣的像梯子的金属氧化物 NW 的合成，包括 In2O3， SnO2， ZnO，和 Ga2O3，经由灵巧的化学蒸汽免职(CVD ) 方法。他们的结构的特征和生长机制被把像梯子的 In2O3 NW 用作一个例子详细表明。单个像梯子的基于 NW 的地效果晶体管(联邦货物税) 和 SnO2 的光电探测器(PD ) 被制作以便调查他们的电的运输和轻吸收性质。与在一个改进模式(电子模式) 操作的笔直地基于 NW 的联邦货物税相比，联邦货物税在像梯子的 NW 上造在一个弄空模式(D 模式) 操作。像梯子的 NW 也比常规单个 nanowires 给更高…
Copolymers with super segregated structure of hydrophilic methoxy poly(ethylene glycol)(mPEG) and fluorophilic poly(1H,1H,2H,2H-perfluorodecyl acrylate)(PFA) were prepared. And just because of this super segregated structure which was resulted from the extremely strong incompatibility between the two blocks, several i…
Multiferroic 材料当前是世界范围的集中的研究的题目，因为两个他们的基本科学问题和也可能的工艺的应用。在在实验室的很多个候选人之中，由稀土元素和转变金属 perovskite 氧化物组成的混合物有很不平常的结构、物理的性质。与所谓的类型相对照我 multiferroics，铁电性可以被磁性的订或由使用外部地导致。在这评论，某选择类型 II multiferroics 的试验性、理论的研究上的最近的进步被介绍，与包含稀土元素和转变金属元素的 perovskite 氧化物的一个焦点。稀土元素 orthoferrite 晶体，稀土元素 titanate 拉紧电影，和稀罕基于地球的超点阵系统地被考察在他们答应电、磁性、结构的性质…
Form-stable phase change materials (PCMs) with high thermal conductivity are essential for thermal energy storage systems, which in turn are indispensible in solar thermal energy applications and efficient use of energy. In this paper, a new palmitic acid (PA)/polyaniline (PANI) form-stable PCMs were prepared by surfa…
Tension-compression fatigue test was performed on 0.45% C steel specimens.Normal and tangential components of magnetic memory testing signals,Hp(y) and Hp(x) signals,with their characteristics,K of Hp(y) and Hp(x)M of Hp(x),throughout the fatigue process were presented and analyzed.Abnormal peaks of Hp(y) and peak of…
In this study,the spheroidization process of large-deformed steel under various conditions was researched. Steel with a high carbon content(1.0% C)was first treated thermomechanically using multipass rolling.Then it underwent spheroidization treatments at different heating temperatures,using various heating times and…
合成和在通过 nylon-salt-type 单体的导致反应的结晶化的甘油的高效 polyimides 和他们的 nanohybrid 烤肉的一种的词法控制的一条绿途径被报导。水晶的 polyimide nanoplates 能被 pyromellitic 酸的直接 polycondensation 与脂肪族或芳香的肼的各种各样的类型观察。与碳 nanotubes 的存在， polyimides 能成功地通过一个导致反应的异种取向附生的结晶化过程在 CNT 的表面上被装饰，并且导致了新奇 polyimide/CNT nanohybrid 烤肉的一种(NHSK ) 结构。NHSK 的形态学能通过改变单体或反应温度的集中被调整，特别通…
In this paper, for the first time, we report the synthesis of nanoscale cuprous chloride (CuCl) cubic structure by a facile hydrothermal route. A possible mechanism for the growth of those nanostructures is proposed based on the experimental results. It is discovered that the existence of HCl could affect the surface…
Hierarchical sea-urchin-shaped manganese oxide microspheres were synthesized via a tacile metnoa based on the reaction between KMnO4 and MnSO4 in HNO3 solution at 50 C.The average diameter of the microspheres is 850 nm.The microspheres consist of a core of diameter of 800 nm and nanorods of width 50 nm.The nanorods ex…