Materials Literature
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The preparation process of amorphous nanometer boron powders through combustion synthesis was investigated, and the effects of the reactant ratio, the heating agent and the milling rate on the activity and particle size of amorphous boron powders were studied. The results show that the boron powders exist in the form…
4 建筑群清楚地被识别，超离频真空扫描通道显微镜学和光谱学( STM/STS )结合了第一原则的计算在 Fe 和 TCNB 在表面上幸存的地方，表明状况可以发生(作为 Fe-4TCNB 实体)在更高的密度，比没有形成的原来的分子的单层，协作与对方一起结合。这被发现 4 单体建筑群不能充分由于导致生长的监禁面对侧面的紧张开发的 Fe (TCNB ) 的方形的平面协作。类似于与 120ediction 的一个 Fe-N-C 契约角度包含强烈修改的 chirality 的位的阻碍者的现象为所有取样
The field-dependent hole mobility of Tips-PEN film prepared by solution-process was extracted with steady-state SCLC and impedance spectroscopy method,and the results of the two methods were compared and analyzed.The samples used in this study have a general structure of p+Si/PEDOT∶PSS/Tips-PEN/Ag,which is a single-ca…
A cylindrical hollow cathode discharge(HCD) in CH4 /Ar gas mixture at pressure of 20-30 Pa was used to deposit diamond-like carbon(DLC) films on the inner surface of a stainless steel tube. The characteristics of the HCD including the voltage-current curves, the plasma images and the optical emission spectrum(OES) wer…
在 Fe-10Ni-7Mn-0.8Y (wt.%) 合金与六角形的结构猛抛。这些的格子参数猛抛如下被计算：a=0.8485 nm 和 c=0.8274 nm。Y2O3 亚微米粒子的形成也经由电解阶段抽取方法在两钇适用钢被证实。这些的效果在优先的奥氏体谷物尺寸上猛抛被调查。结果揭示了那这些猛抛在控制优先的奥氏体谷物尺寸有一个有效角色。
Polyaniline (PANI)-Mn3O4 nanocomposites (NCs) have been synthesized by in situ chemical oxidative polymerization of aniline with different molar ratios of aniline:Mn3O4 (3.3:1 and 2.5:1) using ammonium per sulfate as an oxidant in an aqueous solution of sodium dodecyl benzene sulfonic acid, as surfactant and dopant at…
The effect of moisture content upon compressive mechanical behavior of concrete under impact loading was studied. The axial rapid compressive loading tests of over 50 specimens with five different saturations were executed. The technique 'split Hopkinson pressure bar'(SHPB) was used. The impact velocity was 10 m/s wit…
Ca (II ) 离子在旋转的药被增加调整自从 Ca (II ) 离子，在湿旋转的进程期间的丝心蛋白(RSF ) 答案被证明有利在我们的以前的工作维持稳定的丝绸丝心蛋白网络的改革丝绸的团结率。结果证明当 Ca (II )/RSF 比率是 1/50 和 1/20 时，结果的 RSF 纤维与碎精力展出好性能超过 70 kJ/kg。然而，更高的 Ca (II )/RSF 比率(例如， 1/10 ) 妨碍在差的 RSF 纤维旋转药和结果的团结。和从这个实验室的更早的报纸的这些观察证实旋转条件必须允许丝绸丝心蛋白的调整的足够的时间生产坚韧的丝绸纤维分子的链。
An explicit-incremental Finite-Element formulation and implementation approach in general FEM software was proposed to study the nonlinear coupling of magneto-mechanical properties and the response of giant magnetostrictive material Terfenol-D.This method based on the experimental data or some relevant constitutive mo…
The low-k carbon doped silica film has been modified by radio frequency helium plasma at 5 Pa pressure and 80 W power with subsequent XPS,FTIR and optical emission spectroscopy analysis.XPS data indicate that helium ions have broken Si-C bonds,leading to Si-C scission with C(1s) lost seriously.The Si(2p),O(1s),peak ob…
This paper reported the bromination of 2-methyl-1,8-naphthyridine derivatives. Monobrominated products,2-bromomethyl-1,8-naphthyridine derivatives,and dibrominated byproducts were obtained with N-bromosuccimide( NBS) as the bromination agent under infrared light. Two synthetic conditions were evaluated. The yield of m…
The corrosion inhibition of Q235 carbon steel in 3.5%Na Cl solution by cupferron was investigated by means of static immersion test and electrochemical experiments. The results indicated that Q235 steel suffered from serious corrosion with a characteristic of active corrosion, and obvious pits were observed after imme…
Dy-doped CaMnO3 ceramics have been synthesized by co-precipitation method combined with the solid-state reaction.Phase composition and microstructure analysis indicate that high density and pure CaMnO3 phase can be achieved.The electric conductivity can be enhanced by Dy doping,and result in a slight increase of the t…
By measuring the expansion curves of a C-Mn steel at different cooling rates by using an MMS-300thermomechanical simulator,continuous cooling transformation curves were obtained.The new processultra fast cooling +laminar coolingwas simulated and the effects of ultra fast cooling ending temperature on microstructure ha…
The transparent conductive pure and doped zinc oxide thin films with aluminum, cobalt and indium were deposited by ultrasonic spray technique on glass substrate at 350 C. This paper is to present a new approach to the description of correlation between electrical conductivity and optical gap energy with dopants’ conce…
我们证明那 Mo6S9xIx nanowires (MoSI NW ) 能为 DNA 的高度敏感、没有标签的察觉用作优秀加强信号的 nanomaterial 由紫外(紫外) spectrophotometry。在 260 nm 的 DNA 扑灭极大地在 MoSI NW 溶质的增加以后被提高，并且扑灭价值与在有 28.9 ng/mL 的真实决心限制的 0.028911.68 g/mL 的范围的 DNA 集中是线性的。有 nanowires 的 DNA 的协会被传播 electronmicroscopy 和圆形的二色性的光谱学描绘。结果说明 DNA 的紫外反应扩大由于和 MoSI NW 的 DNA 的相互作用在 MoSI NW 表面和…
Particle size distribution significantly influences the mechanical response of the ballast under low confining pressure. However, particle breakage usually occurs and unfavorably degrades the particle size distribution of the ballast when sufficient load is applied. To model the triaxial stress-strain behavior and its…
In this article, we report the facile synthesis of metal-free dyes 6 and 7, their solution-based optical and redox properties and their use as sensitizers in dye-sensitized solar cells (DSSCs). Our studies indicate that the addition of the second thiophene unit in dye 7, decreases the oxidation and reduction potential…
Erbium( Ⅲ) /ytterbium( Ⅲ)-codoped tellurite glass has been widely studied due to its good quality of up-conversion emission. In this work,fluoride was introduced in the tellurite glass and a series of glasses 70TeO2-( 30- x) ZnO-xZnF2-0. 15Er2O3-1. 5Yb2O3( x =0,5,10,15,20, molar ratio) were prepared via melting proces…
The effect of ultra fast cooling(UFC) during hot strip rolling on the precipitation behavior of cementite in carbon steels and its subsequent strengthening effect have been investigated by controlling the cooling temperatures for three carbon steels with 0.04%,0.17% and 0.5%C respectively.The results show that the ref…