Materials Literature
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Hollow mesoporous tungsten trioxide microsphere(HMTTS) was synthesized by spay drying method and employed as the support material for Pd catalyst. The catalyst was characterized by X-ray powder diffraction(XRD), scanning electron microscopy(SEM), and transmission electron microscopy(TEM). The Pd nanoparticles had a fa…
Enantioselective extraction of hydrophobic clorprenaline(CPE) enantiomers from organic phase to aqueous phases with sulfobutylether-β-cyclodextrin(SBE-β-CD) as the selector was investigated with insight into a number of important process variables, such as the type of organic solvent, concentration of selector, pH, an…
In the present study,the authors explore the triple-helix conformation and thermal stability of collagen mimetic peptides(CMPs) as a function of peptide sequence and/or chain length by circular dichroism(CD).Five CMPs were designed and synthetized varying the number of POG triplets or incorporating an integrin α_2β_1…
The role of various vulcanizing systems on the curing characteristics, mechanical properties, morphology and dynamic mechanical analysis of natural rubber and recycled ethylene-propylene-diene rubber blends was investigated. Accelerated sulfur-vulcanizing systems (semi- EV and EV), peroxide, and mixed sulfur/peroxide-…
In this article, field-activated and pressure- assisted synthesis was employed to synthesize an ultra- hard, super-abrasive AlMgB14-TiB2 composite ceramic. The friction and wear performance of the AlMgB14-TiB2 composite were evaluated in ambient air at temperatures up to 800 C by using a reciprocating ball-on-disk hig…
AIM: To study the response to silver nanoparticles(Ag NP) of human microvascular endothelial cells, protagonists of angiogenesis. METHODS: We cultured human microvascular endothelial cells and endothelial colony-forming cells in their corresponding growth medium. Stock solutions of Ag NP were prepared in culture mediu…
Spider silk, relying on its exceptional mechanical properties,has attracted extensive attention throughout the world.The structure of a material can influence its mechanical properties.Investigation of the structure of spider silk includes amino acid composition, molecular structure, self-assembly, and crystallization…
Nanoscale 离子的材料(偷窃) 通过一个灵巧的方法基于碳黑色(CB ) 被准备。第一， CB 在硝酸和硫磺的酸的混合被氧化，导致 CB 的表面上的 a large amounts of -COOH。然后氧化的 CB 是由通过在 CB 和 -NH2-of polyetheramine 的 -COOH 之间的中立化反应的 polyetheramine 的 grafted，并且 CB 衍生物被获得。这 surface-functionalized CB 能由小心地改变部件当溶剂不在时在周围的温度作为液体表现。FTIR 和 thermaogravimetric 分析证实了连续地 polyetheramine 的 grafting。…
The structure and magnetocaloric properties of La1–xCexFe11.44Si1.56 and their hydrides La1–xCexFe11.44Si1.56Hy(x=0, 0.1, 0.2, 0.3, 0.4) were investigated.The samples crystallized mainly in the cubic Na Zn13-type structure with a small amount of α-Fe phase as impurity.The lattice constants and Curie temperature presen…
The dynamic model of cold rolling mill based on strip flatness and thickness integrated control was proposed,containing the following sub-models:the rolling process model,the dynamic model of rolls along axial direction,and the compensation model.Based on the rule of volume flow rate,the dynamic rolling process model…
采用化学共沉淀方法合成了柠檬酸化β-环糊精（CA-β-CD）修饰的水基磁流体.运用红外光谱（FTIR）、透射电子显微镜（TEM）、热重分析（TGA）、X射线衍射（XRD）和振动样品磁强计（VSM）对其结构、形貌、组成成分和磁性能进行了表征.结果显示,磁流体粒子分散性良好,粒径分布在（7±2）nm范围;磁流体具有超顺磁性,CA-β-CD修饰前后的饱和磁化值分别为62和43 A＆#183;m2/Kg.将磁流体用于染料中性红（NR）的吸附,考察了吸附时间、NR初始浓度及溶液pH值对吸附作用的影响.结果显示,磁流体在中性条件下对NR的吸附效果最佳,最大吸附量为244 mg/g,吸附效率最高可达99.8％.
硅为高能力锂离子电池作为最有希望的阳极材料被认出了。然而，大体积变化在骑车上在充电和分泌物期间导致 Si 电极和快能力损失的弄成粉。Si 电极的这个缺点能被联合与组织良好的 graphene 泡沫克服。在这个工作，层次三维的碳涂的 mesoporous Si nanospheres@graphene 泡沫(C@Si@GF ) nanoarchitectures 被热水泡喷射成功地综合帮助 chemical-vapor-deposition 和 magnesiothermic 减小方法。同样准备的 nanocomposites 的形态学和结构被扫描电子显微镜学，传播电子显微镜学和拉曼光谱学的地排放描绘。当在锂离子电池作为阳极材料采用…
Silicon carbide whiskers were prepared by carbothermal reduction method. Materials are silica sol and carbon black,Si,Fe2O3,Si-Fe as catalyst,the phase composition and microstructure of compound products were investigated by XRD and SEM,effect of synthesized temperature,kind of catalysts, amount of catalyst were discu…
A new series of fluorinated liquid crystal compounds with vinyl linking group was designed and synthesized via 3steps reaction with a purity higher than 99.5% and overall yield of 44.1%~ 48.3% by using 4-bromobenzyl bromide as starting materials.Their structures were identified by IR, 1 HNMR and MS and their phase tra…
Doxycycline can coordinate with europium( Ⅲ) to form EuDC complex which emits characteristic fluorescence peak of europium( Ⅲ). The fluorescence of EuDC complex can be further enhanced by silver nanoparticles through the metal-enhanced fluorescence effect. This method was applied to determine the doxycycline content i…
/g。一个宽广、积极 DRCD 信号，在 400 点识别了 –800 ； nm，显示碳的、管状的 nanoribbons 展览光活动。螺旋状的沥青被建议在 DRCD 信号的位置起一个重要作用。
The electrochemical performance of Al-Zn-In-Mg-Ti-Si sacrificial anodes with different Fe content was studied by electrochemical method,galvanic corrosion,EPMA and ICP-MS in seawater.The results show that along with the increase of Fe content,the amount of Fe cantaining precipitates also increases.Fe is mainly gatheri…
The photocrosslinking properties of poly(4-methacryloyloxy-4'-dimethyl aminochalcone)(PMADMAC) and poly(4-acryloyloxychalcone)(PAC) homopolymers were investigated by Fourier transform infrared spectoscopy(FT-IR),thermogravimetric analysis,UV-visible spectroscopy(UVVis),and fluorescence spectroscopy.Photocrosslinking r…
Orexin neurons within the lateral hypothalamus play a crucial role in the promotion and maintenance of arousal. Studies have strongly suggested that orexin neurons are an important target in endogenous adenosine-regulated sleep homeostasis. Orexin A induces a robust increase in the firing activity of orexin neurons, w…
有 aza-15-crown-5 的新奇结合的聚合物作为悬挂的组，， P1 被联合反应的 Sonogashira 综合。聚合物 P1 被发现向 Ba2+ 显示出荧光改进反应。聚合物的排放紧张的渐渐的恢复和拐弯处点出现在 Ba2+ 的增加，它为结合的聚合物的荧光扩大机制提供了好证据。