摘要：Harvesting the promising high energy density of advanced electrode materials in lithium-ion batteries is critically dependent on a mechanistic understanding on how the materials function and degrade along with the battery ***,we tracked phase transformations during(de)lithiation of Sb_(2)Se_(3) single crystals using in situ high-resolution transmission electron microscopy(HRTEM)technique,and revealed electro-chemo-mechanical evolution at the reaction *** effect of this electro-chemo-mechanical coupling has a complicated interplay on the lithiation kinetics and causes various types of defects at the reaction front,including dislocation dipoles,antiphase boundaries,and *** return,the formed cracks and related defects build a path for fast diffusion of lithium ions and trigger a highly anisotropic lithiation at the twisted reaction front,giving rise to the formation of presumably "dead" Sb_(2)Se_(3) nanodomains in amorphous Li_(x)Sb_(2)Se_(3).The detailed mechanistic understanding may facilitate the rational design of high-capacity electrode materials for battery applications.

摘要：The c-Jun N-terminal kinase （JNK） is involved in a variety of important cellular processes and aberrant JNK activity is associated with many human *** ligand-based and receptor-based alignment rules were used to build 3D-QSAR models for a series of N-benzyl isatin oximes JNK inhibitors. The best models were obtained for the receptor-based alignment with CoMSIA combining steric （S）, electrostatic （E）, and hydrogen bond donor （D） and hydrogen bond acceptor （A） fields （q2 = 0.759, r2 = 0.966, r2 pred = 0.703）. Based on the contour maps of RB CoMSIA model, some key structural factors responsible for inhibitory activity were investigated. Large groups at N-substituent or R6 position are preferred to interact with hydrophobic residues Ile70, Asp150, Ala151, Asn152 and Ser193. Electron-donating or hydrogen bond donor groups on the isatin ring would form polar and hydrogen bond with the negative-charged residue Glu147. In addition, electron-withdrawing groups or hydrogen bond acceptor group near the N-substituent would enhance inhibitory activity. The results are in good accordance and complementary to each other. The developed models could provide guidance in the rational design of more potent and selective JNK inhibitors.

摘要：Carbon nanotubes(CNTs) have received broad attention in the past decades due to their excellent physical and chemical properties and thus been regarded as a powerful candidate for future star-materials. Although various CNT products and their related applications have been demonstrated recently, their performance can hardly meet the researchers’ expectations compared with their theoretical properties. The current predicament is caused by the immature synthesis method, including the basic science and the producing technology. As the synthesis with controlled structures determines its future, this review summarizes the progress on the basic research and industrialization of CNTs in the past decades, including the fine structure control, aggregation status design and scale-up production, and further points out the way for the future development of CNTs combining with specific applications.

摘要：Solidification/stabilization(S/S)technology has been widely used for remediation of the heavy metal contaminated *** heavy metal ions will be leached from the stabilized contaminated soil under sulfate erosion conditions,which gives rise tosecondary contamination to the areas around the mine *** commonly used Portland cement,fly ash and quicklime were takenas binder raw materials with various mix *** then,the sulphuric acid and nitric acid method was used to investigate theleaching characteristic of stabilized heavy metal contaminated *** effects of binder types and binder contents,sulfateconcentrations(1.5,3.0and6.0g/L)and erosion time(0,7,14and28d)on leached concentrations of heavy metal ions fromcontaminated soils were ***,a parameter named immobilization percentage(IP)was introduced to evaluate theinfluence of erosion time and sulfate concentration on immobilization effectiveness for heavy metal *** results showed that,theleached heavy metal concentrations increased with sulfate concentration and erosion *** speaking,the compositebinders that had calcium oxide in it exhibited the worst solidification effectiveness and the lowest immobilization percentage,withthe largest leached heavy metal concentration.

摘要：人工智能与机器人技术的融合,使智能机器人的应用范围从工业制造领域扩展到日常生活和医疗健康等领域.目前,智能机器人除了视觉、听觉和嗅觉等感知外,还需具备触觉反馈的感知能力才能在复杂的环境中帮助人类完成更精细的任务.本文基于触觉感知阵列模块、多通道数据采集和信息处理芯片以及闭环反馈控制模块,构建了集成智能触觉系统(IITS),实现了机器人手或假肢手对轻柔物体灵活可控抓握.通过设定适当的压力阈值,机器人手在抓取物体的过程中,一旦触觉感知阵列上的抓握值达到设定阈值,则会停止抓握,进而实现一个闭环反馈的可控抓指令.实验证明,集成有IITS的机器人可以灵活抓取气球、纸杯、软饼、活蚕等各种物体,该智能系统在假肢、服务型机器人和深海探索机器人的设计方面具有重要的潜在应用价值.

摘要：Porous SiC/Ti-based metallic glass composite (Ti-BMGC), a new kind of composite, has significant application prospectin the field of light armor. To evaluate the dynamic mechanical response of the composite, dynamic Vickers hardness andindentation-induced deformation behavior were investigated by comparison with that under static indentation. The dynamic hardnesswas measured by a modified split Hopkinson pressure bar (SHPB). The dynamic hardness is obviously greater than the statichardness. The brittleness parameter under dynamic indentation is also greater than that under static indentation. Although thedynamic indentation induced more severe deformation behavior than the static indentation, the deformation and fracturecharacteristics in the two loading cases are nearly the same, both exhibiting extensive cracks in the SiC phase and severe plasticdeformation in the metallic glass phase.

摘要：为解决污水处理过程控制中能耗过高、出水水质差的问题,提出一种基于自适应免疫优化(AIOIC)的智能控制系统。设计分层控制策略,采用基于奇异值分解的快速在线自组织模糊神经网络(SVDFNN)构建污水处理能耗和出水水质模型。采用自适应混合免疫优化算法,获得最佳的溶解氧和硝态氮设定值。利用底层的自组织递归模糊神经网络控制器跟踪该优化设定值。结果表明:所提出的免疫优化智能控制策略不仅能满足出水水质标准,而且能显著降低污水处理能耗。

摘要：随着系统级封装(SIP)所容纳的电子元器件和集成密度迅速增加,传统的散热方法(热通孔、风冷散热等)越来越难以满足系统级封装的热管理需求。低温共烧陶瓷(LTCC)作为常见的封装基板材料之一,设计并研制了三种内嵌于LTCC基板的微流道,其中包括直排型、蛇型和螺旋型微流道(高度为0.3mm,宽度分别为0.4,0.5和0.8mm)。通过数值仿真和红外热像仪测试相结合的方式分析了微流道网络结构、流体质量流量、雷诺数、材料热导率对内嵌微流道LTCC基板换热性能的影响,实验结果表明:当去离子水的流量为10mL/min,热源等效功率为2 W/cm^2时,直排型微流道的LTCC基板最高温度在3.1kPa输入泵压差下能降低75.4℃,蛇型微流道的LTCC基板最高温度在85.8kPa输入泵压差下能降低80.2℃,螺旋型微流道的LTCC基板最高温度在103.1kPa输入泵压差下能降低86.7℃。在三种微流道中,直排型微流道具有最小的雷诺数,在相同的输入泵压差下有最好的散热性能。窄的直排型微流道(0.4 mm)在相同的流道排布密度和流体流量时比宽的微流道(0.8mm)能多降低基板温度10℃。此外,提高封装材料的热导率有助于提高微流道的换热性能。

摘要：采用有限元分析方法,分析了压电双晶片悬臂梁的位移形变特征。研究了金属弹性层、压电陶瓷片的材料属性及几何尺寸对双晶片偏转位移的影响;计算了双晶片的弹性模量、厚度以及加载电压与位移形变产生弯应力的关系;通过位移测试、弯应力测试等相关实验对有限元分析进行了验证。当加载电压为60V(120Vp-p)时,双晶片的偏转位移和弯应力分别为166μm和34.7m.N,实验结果证明本文所建的有限元模型是合理有效的。此外,测试了压电双晶片的振动特性,测得其谐振频率为310Hz,在该频率下加载20Vp-p电压,其端部位移输出即可达1.7mm。有限元分析结果及实验验证为压电双晶片结构的优化设计提供了依据。

摘要：The development of ultrasmall transition-metal dichalcogenide（such as MoS_2,MoSe_2） nanostructures is an efficient strategy to increase the active edge sites and overall performance for hydrogen evolution reaction. Here,we report an in-situ tearing strategy to produce the carbon nanotube supported subnanometer ternary MoSeS（denoted as CNTs@NiSe@MoSeS） for efficient hydrogen evolution. Large（18.3 ± 1.1nm in length） multilayer MoS_2 sheets grown on Ni（OH）_2 thin film are torn into subnanometer（5.2 ± 0.7 nm in length） MoSeS via a subsequent selenization progress,along with the transformation of Ni（OH）_2 thin film into small Ni Se nanoplates. The resulting nanocomposite exhibits abundant active edge sites,outstanding 10,000-cycle stability and ultrahigh activity with a low overpotential of 189 mV at a high current density of 200 mA cm^（-2） toward hydrogen evolution.