Materials Literature
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Acoustic emission tests were performed using a split Hopkinson pressure bar system(SHPB) on 50-mm-diameter bars of granite, limestone, sandstone and skarn. The results show that the amplitude distribution of hits is not well centralized around 50 d B, and that some hits with large amplitudes, usually larger than 70 d…
New composites of a water-stable chromium- based metal organic framework MIL-101 and mesoporous carbon CMK-3 were in situ synthesized with different ratios of MIL-101 and CMK-3 using the hydrothermal method. The composites as well as the parent materials were characterized by X-ray diffraction, thermo gravi- metric an…
在链状的起床人设计是精确地在触地地区评估疲劳损坏的钢的最关键的问题。在触地地区的起床人土壤抵抗的适当建模能由优化设计导致重要费用减小。这份报纸论述能被使用数字地模仿起床人土壤相互作用并且评估动态回答和钢的疲劳损坏的一个粘性模型在触地地区的链状的起床人。利用模型，众多的起床人土壤元素被纳入钢链状的起床人有限元素，各个沿着起床人触地地区在模仿本地基础抑制。起床人土壤相互作用粘性模型在许可的联合装载表面以内说明行为。模型将在这份报纸被代表，允许简单数字实现。更重要地，它能在钢的结构的分析以内被合并有有限元素方法的链状的起床人。模型的适用性理论上被解释，结果通过申请被显示出到一近海 8.625 钢链状的起床人例子。班机橡皮起床人土壤模型的…
Sr2. 95 Si O5∶ 0. 05 Eu phosphors were synthesized by high temperature solid phase method,and the phosphor phase,excitation and emission spectra,particle size distribution,surface morphology were investigated with the help of X-ray diffraction,spectrometer,granulometer and scanning electron microscopy. The influence o…
slip, prismatic slip and pyramidal slip have different critical shear stresses(CRSS), their contributions to the degree of deformation are very differential. In addition,Schmid factor plays an important role in the activity of various deformation modes and it is the key factor for the samples with different strain rat…
金属性的 multilayers (NMM ) 很吸引了的 nanoscale 的机械行为从科学、实际的看法的注意。与他们的整体的对应物相比，在 NMM 存在的接口的大数字支配结构的合成材料的这个特殊的班的唯一的行为。当 microlaminates 的机械机制上有很多评论时，纳米技术的快速的开发为专门集中于 NMM 的一个基于性质的定义的概述带了紧迫的需要，他们的特别尺寸依赖者微观结构和机械性能。这篇文章试图在微观结构，机械性质和 NMM 的塑料变丑物理上提供全面、新的评论。我们希望这评论能完成二个目的：(1 ) 介绍可伸缩和维的分析到研究 NMM 系统的科学家和工程师的基本概念，并且(2 ) 提供接口行为和在 NMM 的接口在…
为塑料使变形的部分，维的精确性被剩余压力显著地影响那么在服务做表演。因此，在房间温度的 GH4169 合金表的滚动过程被有限元素方法调查。在纵的剩余上卷减小，磨擦系数，滚动速度和起始的应力的效果强调在 GH4169 合金表的厚度上的分发被分析。结果证明纵的剩余应力的价值能被增加滚动减小和速度稍微减少。在厚度上的纵的剩余压力作为 V 散布类型或弱 W 类型。起始的压力主要在纵的压力上有效果在向后滑倒区域。但是磨擦系数在纵的剩余应力上有显著影响。与从 0.1 ～ 0.5 增加的磨擦系数，表表面上的纵的剩余应力的价值被 282MPa 减少。同时，进有强壮的 W 的压缩应力的张力的压力拐弯打分发。
The key technique of a kinetic energy rod （KER） warhead is to control the flight attitude of rods. The rods are usually designed to differentshapes. A new conceptual KER named profiled rod which has large L/D ratio is described in this paper. The elastic dynamic equations of thisprofiled rod flying at high velocity af…
graphene 的共有原子价 functionalization 为定制它的性质提供机会并且是一些 graphene 合成技术的不可避免的后果。然而， functionalization 导致的变化很好没被理解。由使用原子来源控制氧和氮 functionalization 的程度，我们在原子规模在结构和性质学习了进化。虽然，原子氧 reversibly 介绍 epoxide 组，在类似的条件下面，原子氮不可逆转地创造包括的多样的功能代理， pyridinic，和 pyrrolic 氮。原子氧在迪拉克点离开费密能量(即， undoped ) ，虽然原子氮导致网做 n；然而，试验性的结果与为两是转变从的主导的电子效果一致去除到局部性…
indium-tin-oxide (ITO ) 的工作函数(WF ) 底层戏转换器官的光电的设备性能上的一个重要角色。并且电极工程是一个有用方法便于搬运人抽取或费用收集提高器官光电(OPV ) 性能。由使用自己组装技术，我们 poly 扔了(dimethyl diallylammonium 氯化物)(PDDA ) 层到 ITO 涂的玻璃底层上。结果显示 ITO 的表面 WF 被大约 0.3 eV 在 PDDA 修正以后减少，它在电子亲密关系被归因于调整。另外， ITO 底层的表面粗糙在 PDDA 修正以后变得更小。这些修改 ITO 底层能被使用制作转换 OPV， ITO 作为阴极在工作收集电子。作为结果，转换 OPV 的光电的表演…
H-NMR 光谱学， Fourier 变换红外线的光谱学，和胶化浸透色析法的分析。源于微分扫描热量测定，极化的轻显微镜学，一个维、二维的宽角度的X光检查衍射，和技术表明的传播电子显微镜学 triarm 进 hexagon-in-lamella 形态学自我装配的塑造星的杆杆 BCP ，与在圆柱的 nematic 的 PMPCS 块，在六角形的圆柱的安排的阶段和 PBLG 块在星形状由于二块和共有原子价连接的僵硬性质在 bilayers 收拾行李
Polymer solar cells based on blends of poly( 3-hexylthiophene)( P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester( PCBM) were fabricated by solvent annealing under different environmental pressures. The performance of the solar cells were tested by X-ray diffraction( XRD),atomic force microscopy( AFM) images and ab…
A new compound, [H2N(CH3)2]2[Zn(btec)].H2O(1, H4 btec = 1,2,4,5-benzenetetracarboxylic acid) has been solvothermally synthesized and structurally characterized by singlecrystal X-ray diffraction. The crystal structure is of monoclinic, space group P21/c with a = 9.5741(3), b = 14.5044(4), c = 13.7329(5) , β = 100.582…
Bunching of elementary steps by solution flow is still not yet clarified for protein crystals. Hence, in this study, we observed elementary steps on crystal surfaces of model protein hen egg-white lysozyme(HEWL) under forced flow conditions, by our advanced optical microscopy. We found that in the case of a HEWL solut…
Based on API STD 1104-2005 and CSA Z662-2007,field girth welding tests and girth weldability evaluations were executed for three types of wall thickness X70 UOE pipeline,in which the most popular main line girth welding method,single-wire automatic gas metal arc welding(GMAW),was used. The welding procedure specificat…
In this study,we aimed to determine the radiation parameters of some potential bioactive compounds.1-Aryl-3-dibenzylamino-propane-1-on hydrochloride type Mannich bases were synthesized via classical conventional heating method.Aryl part was changed as phenyl(C6H5),4-methylphenyl(4-CH3C6H4),4-fluorophenyl(4-FC6H4),4-ni…
The kinetics of the decomposition of dimethylhexane-1,6-dicarbamate to 1,6-hexamethylene diisocyanate was studied. A consecutive reaction model was established and the reaction orders for the two steps were confirmed to be 1 and 1.3 by the integral test method and the numerical differential method, respectively. The a…
Owing to the unique conjugated structure, the chemical-reaction selectivity of single-walled carbon nanotubes （SWNTs） has attracted great attention. By utilizing the radial deformation of SWNTs caused by the strong interactions with the quartz lattice, we achieve an anomalous diameter-dependent reaction selectivity of…
内部磨擦的温度依赖首先被调查为铝粉末的绿协议在 sintering 过程期间理解微观结构转变。内部磨擦(如果) 当时，山峰仅仅在首先加热的过程期间被观察不在随后的冷却并且加热过程重复。山峰的温度位置独立于测量频率，高度与增加的频率减少。山峰的外观是仔细，与在使变形的铝粒子和增加的脱臼之间的弱结合接口有关，密度由压导致了。如果，山峰的外观很好回答被谷物边界的外观证明的谷物边界的形成到使变形的粒子并且这样的一个再结晶过程山峰。山峰温度位置在 sintering 过程期间与再结晶过程的发作被文饰。
A novel electroslag furnace with a rotating mold was fabricated, and the effects of mold rotational speed on the electroslag remelting process were investigated. The results showed that the chemical element distribution in ingots became uniform and that their compact density increased when the mold rotational speed wa…