Materials Literature
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Methyl formate is a versatile chemical precursor to a wide range of other important chemicals. It can be synthesized by different routes, among which dehydrogenation and selective oxidation of methanol to methyl formate are particularly attractive, because they are operationally simple and green. Metal catalysts such…
Electrolyte of vanadium flow battery(VFB) is the key component of the energy storage unit, which plays an important role in the energy conversion efficiency and cycle stability performance of VFB. Considering the volume ratio of the catholyte and anolyte, also the electrolyte valence state, the effect of the excess of…
The transport properties of artificially engineered superlattices （SLs） can be tailored by incorporating a high density of interfaces in them. Specifically, SiGe SLs with low thermal conductivity values have great potential for thermoelectric generation and nano-cooling of Si-based devices. Here, we present a novel ap…
This work studied the failure of rivets made from different material compositions; Aluminium, copper, and aluminium-copper alloy under the same working condition. The strength to weight ratio and other properties of these materials make them ideal materials for rivet design. Six different rivets were produced each usi…
In this paper,we have made a study of the thermal hazard characteristics of the pure CYHPO and its mixtures with dibutyl phthalate(DBP),dioctyl phthalate(DOP),hexanoic acid(HAA) and cyclohexanol(CCH) by using an adiabatic accelerating rate calorimeter(ARC). We have also found that the above said four organic solvents…
In this paper, the microstructure and the microwave dielectric properties of Na1/2Nd1/2Ti1-xSnxO3 (0 B x B 0.02) ceramics prepared by the conventional solid-state route were investigated. All the solutions fitted well with perovskite structure. The replacement of Ti 4? by Sn 4? at the B-site increased the lattice para…
The effects of pulling velocity on the solidification behavior and microstructural parameters of Al Si10 Mg alloys prepared in a Bridgman-type directional solidification furnace were investigated. The microstructure, particularly the secondary dendritic arm spacing(SDAS), and the Brinell hardness(BH) of the solidified…
The intermediates 4-[(2,4-dihydroxyl-5-nitrobenzophenonel) carbamoyl]-2,6-di-hydroxyl methyl benzoate(2,6-DH-MNC),4-(5-nitro-6-hydroxy-2-benzoxazolyl-2,6-dhydroxy methyl benzoate(2,6-DH-MNB) and the final product 4-[(2,4-dihydroxyl-5-nitrobenzophenonel)carbamoyl]-2,6-dihydroxyl methyl benzoate(2,6-DH-MAB) were success…
The static tests of nine traditional and bird beak square hollow structure(SHS) T-joints with different β values and connection types under axial compression at brace end were carried out. Experimental test schemes, failure modes of specimens, jack load-vertical displacement curves, jack load-deformation of chord and…
In recent years, the non-equilibrium solidification technology is developing very fast while the designing of solidification processes still relies on classical theories and empirical relations, which can no longer satisfy the increasing need for controlling of solidification conditions. The classical solidification t…
阶段分离行为上的化学上减少的 graphene 氧化物(CRGO ) 的效果(甲基 methacrylate ) poly， /poly (styrene-co-acrylonitrile )(PMMA/SAN ) 相配并且 rheological 和在在阶段分离温度上面退火之上的 PMMA/SAN/CRGO nanocomposites 的传导性的行为的同时的反应被调查。CRGO 的介绍引起 binodal 温度的减少，为 PMMA/SAN 的 spinodal 温度的增加混合然后扩大他们的亚稳的政体。在退火期间，在同类的混合矩阵的分散得好的 CRGO 趋于有选择地与阶段分离的进化位于充满圣的阶段然后 CRGO 进一步在充满圣的…
Taking Wangcang County of Sichuan Province as an example,this paper made comprehensive benefit analysis on models of circular agriculture in Wangcang County. Major models include pig- biogas- fruit, pig- biogas- vegetable,and pig- biogas- tea. It made cost benefit analysis of economic,social and ecological benefits. T…
狭窄分散， surface-functionalized 生活聚合物 microspheres 与一致地， cross-linked 结构被苯乙烯和 divinylbenzene 的二阶段的降水 copolymerization 准备。二阶段的降水聚合为反向的原子转移激进分子聚合(反向的 ATRP ) 为控制聚合过程跟随的成核由起始的常规降水聚合组成。聚合参数(装载的第一个阶段， AIBN 数量和单体的包括的反应时间) 被学习了在形态学上显示出重要影响。而且，更狭窄的尺寸分发和 ATRP 产生粒子的开始者功能的表面能被在第二个阶段把反向的 ATRP 用于常规降水聚合获得。而且，产生聚合物 microspheres 的活力被他们的表…
The electronic structure characters are calculated for the Zn1-xMxO alloys with some Zn atoms in ZnO substituted by 3d transition-metal atoms（M）,in order to find out which of these alloys could provide an intermediate band material used for fabricating high efficiency soiar cell.Especially,among of these alloys,the el…
用分子的力学和分子的动力学模拟，我们集中于在围单人赛的碳 nanotubes (SWNT ) 的光线的倒塌和弹性上充满原子的影响。充满的氩(Ar ) 和原子有效地装的硅(Si ) 改进抵抗到高压力和 SWNT 的光线的弹性，这被显示出，它可以从充满的 Ar (Si ) 原子归因于强壮的斥力。由于 Cu 原子的 stronginteraction，然而充满 Cu 原子败坏 SWNT 光线的弹性。另外，原子的阶段转变填了 SWNT，这被发现发生在装载并且卸掉压力的过程，以便充满原子的 SWNT 的电的性质在装载并且卸掉压力的过程变化。鉴于在卸掉之上充满 Si 原子的 SWNT 的 restorability，充满的 SWNT 能被用来…
Recently graphene has attracted a great interest in scientific research due to its excellent electronic,mechanical,optical,and thermal properties. Many methods have been explored for preparation of high-quality graphene efficiently. However,it still remains a great challenge for the scalable production of graphene wit…
High-transparent and flexible Au nanofiber films were successfully fabricated by a combination of electrospinning technique and ion sputtering technology,in the presence of polyvinylpyrrolidone( PVP) nanofiber films as template. The as-prepared Au nanofiber films show typical interconnected nonwoven nanofiber networks…
polyaniline (平底锅) 和 epoxide polysiloxane (EPSi ) 的 Composites 第一次被报导。EPSi 被设计，综合并且到通过共有原子价契约的平底锅脊梁上接枝 N。同样准备的 EPSi-g-PAn composites 在器官的溶剂是可溶的，相应电影能容易经由一个简单扔答案的过程被生产。合成电影联合 EPSi 的机械特征和平底锅的化学性质，启用高贵金属粒子的灵巧的介绍。composites 的成功的制造被材料的分子的结构，水晶的结构和微观结构的调查证实。结果包含高贵金属粒子的合成电影作为催化剂被采用让酚的加氢生产 cyclohexanone，它为用法以及高催化的活动展出便利和再循环能力，…
Organic Nanodielectric Polymer Capacitors tainted with gold plating were prepared in this experiment using the hot press method to determine the effectiveness of their applications in energy storage by analyzing their energy density and D-E Loop. The results procured from this study demonstrated the feasibility of the…
The unsupported Cu and Ag catalysts with different oxidation states were prepared, and their catalytic performances for propylene epoxidation were investigated.The metallic Cu catalyst exhibits much higher catalytic activity and propylene oxide(PO) selectivity than Cu2 O and Cu O catalysts.The Cu0 species are the main…