Materials Literature
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In this study,a method for control of reticulated shells is proposed and its practicality is demonstrated.The control is implemented by replacing selected bars of the shell with passive viscoelastic dampers.By applying the eigenvalue perturbation technique and the earthquake spectrum concept,the sensitivities of vario…
In this work, Si nanocrystals (Si-NCs) have been prepared by pulsed laser ablation technique in dichloromethane, and the microstructure and photolumi- nescence (PL) properties of the Si-NCs before and after natural oxidation were investigated. Transmission electron microscopy and Raman results show that the average di…
By using the density functional theory,glycine linear oligopeptide of different lengths was geometrically optimized on the 6-31G(d) basis set level,their growth processes were simulated,and the average binding energy and vibration frequency were calculated with geometry.The results showed that the average binding ener…
做 Li 的 ZnO 薄电影被收音机频率磁控管劈啪作响种了然后在各种各样的退火的温度下面退火。ZnO 电影的特征被 XRD， FESEM，霍尔测量和光传播系列检验。结果证明 p 类型传导在李被观察做的 ZnO 电影在 500600 点退火了 ?? 疞鲝 ? 咑抑薵亘 ??? 錄 ?嶦 吗？？
Raman and luminescence studies on the phase transition of europium orthoniobates(EuNbO4) under high pressure were performed. The pressure dependent Raman spectra revealed that an irreversible phase transition from monoclinic phase to M'-fergusonite phase of EuNbO4 occurred at 7.3 GPa, and the two phases coexisted over…
Hydrothermal etching method was employed to fabricate four iron-passivated porous silicon( IP-Si) samples on two silicon wafers with different crystal orientations.The morphology of the samples was observed by scanning electron microscope( SEM),and no correlation between the porous structures and the crystal orientati…
Nanoindentation is undoubtedly a powerful experimental technique, developed for more than a decade together with new device technologies, characterization of lower scale physical laws, theories and small scale numerical modelling. Nowadays, nanoindentation (Fischer-Cripps, 2002) is commonly used for investigation of l…
Porous organic polymers(POPs), a new type of porous materials constructed by organic building blocks, have attracted attention and shown significant potential for CO2 capture and separation due to their high physicochemical stability and excellent adsorption capacity. Numerous POPs with good porosity(both surface area…
A novel Sr2CuInO3 S oxysulfide p-type semiconductor photocatalyst has been prepared by solid state reaction method and it exhibits intriguing visible light absorption properties with a bandgap of 2.3 eV. The p-type semiconductor character of the synthesized Sr2CuInO3 S was confirmed by Hall efficient measurement and M…
A continuous and compact zirconium alloying layer was prepared on 0Cr18Ni9Ti stainless steel by double-glow plasma surface alloying technology.The microhardness and the electrochemical corrosion experiments were carried out for the stainless steel and Zralloyed layer,respectively.The results show that the microhardnes…
To improve the separation efficiency of photoinduced charge carries,Au@SiO2nanoparticles(NPs)with core–shell structure were loaded onto the surface of TiO2nanorods grown on fluorine-doped tin oxide substrate by a facile two-step process.The resulted Au@SiO2/TiO2photoanodes were characterized by X-ray diffraction,scann…
与一个高硅石内容合成的 Mesoporous 铁氧化物硅石被热水的方法，和另一合成材料与一个高铁内容综合被在碱的答案蚀刻硅石的部分获得。金催化剂被一个免职降水方法装载到两 composites 上，并且为公司氧化使用了。样品被描绘由 Brumauer-Emmet-Teller (赌注) ， X 光检查衍射(XRD ) ， X 光检查光电子系列(XPS ) ，传播电子显微镜(TEM ) 和扫描电子显微镜(SEM ) 技术。composites 有高特定的表面区域并且是非结晶的。在 composites 的表面上驱散的 Au nanoparticles 处于金属性的状态存在。与高硅石内容合成不对装载的 Au 合适，并且它的支持的金催化…
在这篇文章， DDT 的 NO3 开始激进分子的大气的氧化降级理论上用分子的轨道的理论计算被调查。中介，转变状态和产品的所有计算在 MPWB1K/6-311+G (3df,2p ) 被执行 // MPWB1K/6-31+G (d， p ) 理论的水平。几条精力充沛地有利的反应小径被揭示。第二等的污染物质的形成机制被介绍并且讨论。率常数用正规变化转变状态(CVT ) 在 273333 K 的温度范围上被推出有小弯曲通道(SCT ) 的理论方法。我们的学习证明从到苯戒指的 C3 原子的烷基组和 NO3 增加的 H 抽象是主导的反应小径。全面的率常数的率温度公式是 k (T)(DDT+NO3 )=(7.21
Three half-metallic ferromagnets with NaCl structure,X4CS3(X =Mg,Ca and Sr) are investigated by the first principle calculations based on the density functional theory in the generalized gradient approximation.Non-spin and spin polarized calculations are done to obtain the lattice constants,the equilibrium cell volume…
微生物燃料电池（MFC）的阳极对提高MFC产电性能有至关重要的影响.利用竹炭比表面积大、吸附能力强等特性,将其作为“三合一”膜电极MFC的阳极填充材料,通过增大阳极比表面积来提高其产电能力.实验结果表明,加入竹炭至阳极室后,MFC最高输出电压（外接电阻1 000Ω时）由0.280V增大到0.387V,提高了38.2％,并且输出电压更加稳定;而最大功率密度也由原来的0.22 W/m3增大到1.42 W/m3,同时内阻降低了80.85％（由235 Ω降为45 Ω）;库仑效率由15.0％增大到25.6％.说明MF℃阳极室填充竹炭可以显著促进MFC的产电性能.
This study, for the first time, synthesized carboxymethyl cellulose lithium (CMC-Li) by a two- step method and applied it to modified electrode material by electrospinning and as a binder on a lithium ion battery. By electrospinning, nano CMC-Li fiber and CMC-Li/9, 10-anthraquinone (AQ) compos- ite fiber were obtained…
Ethoxyethyl cyanoacetate is a principal raw material for making the ethoxyethyl-α-cyanoacrylate instantaneous adhesive with low whitening and low oder and was synthesized using transesterification with 2-ethoxyethanol and ethyl cyanoacetate as the raw materials and dibutyltin dilaurate as catalyst.The effect of the re…
BiOCl microspheres were prepared by a simple mixing method with water and ethanol as solvents as well as bismuth nitrate and imidazole-hydrochlorideas as raw materials.The phase,morphologies and optical properties of the as-prepared BiOCl were characterized by scanning electron microscopy,X-ray diffraction,UV-Visible…
Microfibrillar composites from high-density polyethylene (HDPE-75 wt%) and polyamide-6 (PA6-25 wt%) were made through a reactive extrusion at the processing temperature of PA6 in combination with hot stretching to form microfi- brillar composites, and injection molding at the melt temperature of HDPE to form final com…
Bearing ring is the crucial component of bearing. With regard to such problems as material waste, low efficiency and high energy consumption in current process of producing large bearing ring, a new process named compound forming is researched by taking the typical 42CrMo slew bearing as object. Through theoretical an…