Materials Literature
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Autonomous repair of creep damage can be achieved during high-temperature creep in iron based alloys by the addition of gold as a solute healing agent. The creep lifetime at a temperature of 550 °C is found to be extended significantly by the introduction of about 1 at.% of solute Au in the ferritic Fe matrix, when th…
与平行机制相比，一般多环的活动性分析空间机制(GMSM ) 是更困难的获得正确结果。原因是它的多环被形成通过也若干次 closings 并且在那里存在联合甚至强壮的联合的运动，在在限制上被隐藏的地方。然而，为这种机制的活动性分析被付了很少注意。为分析活动性的新全身的方法论基于螺丝钉理论也为 GMSM 被建议。为活动性分析的关键问题是认出在限制上。第一，三条定理被给并且指出：在限制上出现的原因和地点，由螺丝钉理论计算在限制上的数字，并且怎么也为单个环的机制分析在限制上。然后，为 GMSM 的三扇关门形式包括僵硬闭合，活动闭合和动态闭合被建议，并且为三种不同形式，不同分析方法也被给。特别，为有多环闭合在的 GMSM 的最困难的问题多次…
单层联合了结构，它被归因于 ZnO nanorods 的轻天线效果。这些为分层的材料的混血儿和加入协议将为与导致迷人的基本现象和先进设备的可调节的分层的结构支持异质接面的构造提供新观点和机会。
A terbium complex [Tb(3,5-pdc)(3,5-Hpdc)(H2O)(phen) ]n(3,5-H2 pdc = 3,5-pyridinedicarboxylic acid,phen = 1,10-phenanthroline) was synthesized by reacting terbium nitrate with 3,5-H2 pdc and phen at hydrothermal condition. X-ray diffraction analysis of single crystal shows that the complex is crystallized in monoclinic…
Pr doped Mg2 Sn O4 in the scope of 0~1.5nm% was synthesized by hydrothermal method and corresponding calcination at low temperature. X-ray diffraction(XRD), Scanning electron microscope(SEM) and luminescence/ fluorescence spectrophotometer were applied to characterize Pr doped Mg2 Sn O4. The relationship between Pr do…
In order to research the comprehensive influence of gas-thermal-solid and the cooling fin on the deformation and stress of scrolls, the 3D models of orbiting and fixed scrolls are created. On the basis of finite element method(FEM) and indirect coupling method, the deformation and stress of orbiting scroll, fixed scro…
PrCo5 nanoflakes with strong texture and high coercivity of 8.15 k Oe were prepared by surfactant-assisted ball milling with heat-treated starting powder. The thickness and length of the as-milled nanoflakes are mainly in the ranges of 50–100 nm and 0.5–3 μm, respectively. The x-ray diffraction patterns demonstrate th…
The optoelectronic properties of singleand double-wall carbon nanotubes (CNTs) noncovalently functionalized with tetraphenylporphyrins (TPPs) are addressed by dispersion-corrected ab initio calculations. vailable online 9 June 2015 Five CNT species with different chiralities were considered. We find that the most stab…
Expanded flake graphites(EFGs) with different expansion volumes were prepared by an electrophoresis intercalation method using natural flake graphite as the raw material,concentrated HNO_3 and acetic anhydride as intercalates and KMnO_4 as oxidant.Results indicate that the density of structural defects,and the surface…
一种喷雾器水花热分解技术被用来综合球形的 nano-Sb@C 合成。仪器的分析表明与 68.8 wt% 的一个优化 Sb 内容合成的 micro-nanostructured 一致地由极端小的 Sb nanoparticles (10 nm ) 组成在一个球形的多孔的 C 矩阵以内嵌入(作为 10-Sb @ C 表示了) 。Sb 的内容和尺寸能被改变先锋的集中控制。作为钠离子电池的阳极材料， 10-Sb @ C 提供 435 mAh 据 ? 椠据畬楤杮愠猠数楣楦 ? 慣慰楣慴据 ? 景ㄠ ? 的一个分泌物能力 ? 术挠浯慰敲 ? 楷桴琠敨瘠污敵漠 ??? 术映牯 ?? 瑡愠挠慨杲 ? 楤' 湛?慲整漠 ?? ‰ ? 术
象小介入 RNA (siRNA ) 和微 RNA (miRNA ) 那样的 RNA 干扰(RNAi ) 受动器有选择地装 downregulate 任何基因在疾病的病理含有。因此，基于 RNAi 的治疗为大量疾病的处理有巨大的潜力。然而， pharmacokinetic 和 pharmacodynamic 研究表明了这些治疗学的代理人由于很多个因素有差的 bioactivity，包括不够的血浆药层次，短血浆一半生活，肾的清理，和肝的新陈代谢。非病毒的交货可以由帮助克服这些障碍便于基于 siRNA 的治疗学的临床的申请。最近，金 nanoparticles (AuNPs ) 的潜力作为为搬运药，蛋白质，和基因材料的多功能的搬运人被表…
Biodegradable polymeric nanocarriers have emerged as one of the most promising platforms for targeted tumor therapy owing to their excellent biocompatibility, prolonged circulation time, enhanced accumulation in tumors, and in vivo biodegradability. Remarkably, several anticancer nanomedicines based on biodegradable p…
12 (Fe,V) 3 包含 27 的 Si 合金( FVS0812 )并且 37 ( FVS1212 )艾尔的vol% 12 (Fe,V) 3 Si 猛抛被调查。所有样品用热压跟随的机械 alloying 被准备。穿测试用一台 pin-on-disk 机器在房间温度被执行。结果证明艾尔的存在 12 (Fe,V) 3 Si 猛抛增加 nanostructured 艾尔的wear 抵抗，并且wear 抵抗与增加艾尔增加 12 (Fe,V) 3 Si 内容。扫描穿的表面的电子显微镜学图象并且穿表明的碎片那磨损和粘附是管理在 2 和 5 点为 nanostructured FVS0812 合金穿机制 ? ， N 正常为 nanostru…
Graphene aerogels 为精力存储和变换是合乎需要的，作为催化作用支持，并且作为为环境补习的吸附物。当维持高电的电导率和强壮的技工性能时，与低密度生产 graphene aerogels，我们综合了由 freeze-dried graphene 氧化物的 magnesiothermic 减小的 graphene aerogels (去) 自己组装、随后在酸形成的 MgO 蚀刻答案。减少的 graphene 氧化物( rGO ) aerogel 样品展出了象 1.1 mg 一样低的密度????????????????????????????????????????吗???敤牧摡'L汩瑩??????????????????…
Microwave in-situ regeneration of Cu-Mn-Ce / ZSM catalyst adsorbed toluene, distribution of fixed bed temperature,adsorption breakthrough curves of the catalyst after several regenerations and characterizations of the catalyst by BET and SEM were investigated in this study. The research indicated that regeneration eff…
A theoretical model of a nonlinear hyperbolic metamaterial is presented in the form of a stack of subwavelength layers of linear plasmonic and nonlinear dielectric materials. A broad picture of the properties of evanescent waves(high-k modes) in this stack is investigated by plotting global transmission diagrams. The…
A nanocomposite coating was prepared with epoxy resin as film-forming agent,polysiloxane as coupling agent and with proper additives of pigments, fillers and nano silicon dioxide.The nanocomposite coating was applied on carbon steel Q235, and its corrosion performance, in comparison with a present used coating, was in…
The primary function of the peripheral nerves is to transmit signals from the spinal cord to the rest of the body,or to convey sensory information from the rest of the body to the spinal cord.In case of injury or a health disorder,this pathway can be partially or totally disrupted,resulting in pain,loss of sensation,r…
Numerical simulations of gas–liquid two-phase flow and alumina transport process in an aluminum reduction cell were conducted to investigate the effects of anode configurations on the bath flow, gas volume fraction and alumina content distributions. An Euler–Euler two-fluid model was employed coupled with a species tr…
Solidification characteristics of Ti–46Al–7Nb melts were studied by the electromagnetic levitation technique.A maximum melt undercooling up to 240 K has been achieved. When the undercooling is lower than the critical value DT* = 205 K, the alloy possesses typical hypoperitectic solidification characteristic which can…