摘要：Aiming at exploring the excellent structural performance of the vein-stiffening membrane structure of dragonfly hind wings,we analyzed two planar computational models and three 3D computational models with cambered corrugation based on the finite element *** is shown that the vein size in different zones is proportional to the magnitude of the vein internal force when the wing structure is subjected to uniform out-of-plane transverse *** membrane contributes little to the flexural stiffness of the planar wing models,while exerting an immense impact upon the stiffness of the 3D wing models with cambered *** a lumped mass of 10% of the wing is fixed on the leading edge close to the wing tip,the wing fundamental fre-quency decreases by 10.7%～13.2%;if a lumped mass is connected to the wing via multiple springs,the wing fundamental fre-quency decreases by 16.0%～18.0%.Such decrease in fundamental frequency explains the special function of the wing pterostigma in alleviating the wing quivering *** particular features of dragonfly wings can be mimicked in the design of new-style reticulately stiffening thin-walled roof systems and flapping wings in novel intelligent aerial vehicles.

摘要：TiO_(2)-based materials have been considered as one of most promising alternatives for high-performance li(Na)-ion batteries because of the low cost,simple composition,easy synthesis,good environmental protection,excellent safety and relatively high specific ***,the inferior electronic conductivity and poor ion diffusion coefficients are the biggest bottlenecks that restrict the popular *** effort has been focused on resolving these problems toward large-scale applications,and numerous significant advances have been *** the present work,a comprehensive overview of structure characteristics,electrochemical reaction mechanism and modification strategies of TiO_(2)-based materials was *** recent advances of various efficient ways for improving conductivity,li(Na)storage capacity,rate capability and cycle stability are systematically summarized,including surface engineering,constructing composite and element doping,*** TiO_(2)-based materials with novel porous heterogeneous core-shell structures have been regarded as one of the most effective ways to resolve these ***,the future research directions and development prospects of TiO_(2)-based anode materials used in the manufacture of high-performance li(Na)-ion batteries are *** review can provide important comprehension for the construction and optimization of highperformance of TiO_(2)-based anode materials.

摘要：由于医学设备及检查形式的多样性,使放射科医师与影像工作站的交互日趋复杂,因此设计一种能够自适应医生阅片习惯的软件是一个有待解决的难题.采用C/S架构,使用V isual C++2005,DCMTK,VTK和SQL Serv-er2005开发工具,设计了一个基于D ICOM标准的医学影像工作站.此工作站让用户可以根据自己需求,动态生成用户的布局信息并存入数据库,阅片时选择相应的布局信息进行图像布局显示.本工作站能够使专科医师根据其读片习惯和不同的读片要求采用相应的图像布局规则,保证其以方便、快捷的方式进行软读片.本影像工作站在很大程度上简化了医生的操作步骤,同时有利于医师挖掘医学诊断信息,提高医生的工作效率,因此本研究对诊断数字化有着重要意义.

摘要：在常温常压下,利用光电导天线式太赫兹时域光谱仪和自行设计的气室,在0.1~3.0THz范围内对甲醇气体进行太赫兹时域光谱测试,测试结果表明,甲醇气体在1.0~3.0THz没有明显的吸收峰,但是在0.1~1.0THz波段存在明显的吸收峰。为了准确测定甲醇气体的浓度,根据甲醇气体在0.1~1.0THz范围内的15处不同的位置处的特征吸收峰强度和甲醇气体浓度的关系,对十五组不同浓度的甲醇气体进行检测,获得了在特征吸收峰处的差异曲线。基于误差反向传播（BP）神经网络的函数逼近特点,并利用遗传算法（GA）收敛速度较快,不宜陷入局部极值的优点,采用GA优化BP神经网络的初始的权值和阈值,构建了以预测甲醇浓度为目的的数学模型。结果表明,该网络模型适用于体积浓度范围为0.028 3~0.424 6m3·L-1的甲醇的浓度预测,两组样本的平均相对标准误差为1.7%,平均回收率为98%,神经网络误差精度10-1,实测值与期望值的相关系数为0.996 77,基本达到理想预测结果。本成果不仅获得了甲醇气体在太赫兹频段的实验数据,而且发现太赫兹时域光谱法和GA-BP神经网络相结合的方法能有效地检测甲醇气体的体积浓度,为检测甲醇气体浓度提供新的方法。

摘要：在沿海滩涂防护林带低盐区(0.1%)、中盐区(0.2%)和重盐区(0.4%)3个盐分梯度下,研究了栽植10年的乌哺鸡竹和淡竹Na^+、K^+、Ca^(2+)、Mg^(2+)含量变化及其与生长和光合作用的相关关系.结果表明:从低盐区到重盐区,乌哺鸡竹的立竹密度和地径分别下降30.4%和28.8%,降幅低于淡竹的44.1%和31.2%;两竹种单株生物量下降,地上器官生物量降幅均显著高于地下器官;乌哺鸡竹和淡竹净光合速率(P_n)和PSⅡ最大光化学效率(F_v/F_m)分别下降57.6%和67.7%、6.1%和7.4%,乌哺鸡竹耐盐能力比淡竹强.随着土壤含盐量的增大,乌哺鸡竹和淡竹各器官Na^+含量逐渐增加,K^+、Ca^(2+)、Mg^(2+)含量逐渐降低.两竹种根Na^+积累较多,而地上部分K^+含量较高.盐胁迫环境导致乌哺鸡竹根Ca^(2+)含量与淡竹叶片Mg^(2+)含量明显下降.两竹种的生物量、P_n、F_v/F_m与Na^+含量呈显著负相关,与K^+、Ca^(2+)含量呈显著正相关.

摘要：主要研究开发了钢管张力减径机减径过程的传统孔型、圆孔型、椭圆孔型的设计系统 ,研究了有关孔型设计过程的优化问题 ,成功地为钢管生产厂家提供一套张力减径机孔型自动设计系统 。

摘要：【目的】呼吸道合胞病毒(respiratory syncytial virus, RSV)是婴幼儿急性呼吸道感染的最常见原因。基于RT-ERACRISPR/Cas12a技术,建立一种RSV快速特异性的检测方法。【方法】针对RSV N基因保守区域设计合成特异性crRNA及酶促重组等温扩增(ERA)引物,筛选最佳扩增引物-crRNA组合建立检测体系;通过荧光法检测RSV核酸,确定检测方法的灵敏度及特异性。【结果】根据Cas12a的激活原理,针对A型及B型RSV分别设计合成RSV-crRNA1及RSV-crRNA2,二者混合加入检测体系,可同时检测到A型及B型RSV,并具有协同作用;实验筛选出一组最佳引物组合(RSV-F+RSV-R3J),最低检出限为5×10^(2) copies/mL,可在39℃恒温条件下,35 min内完成检测;该方法与其他核酸测试样本无交叉反应,只能检测出RSV核酸,具有较高的特异性。【结论】基于RT-ERA-CRISPR/Cas12a技术,成功建立了一种灵敏度高、特异性强、快速、低成本的RSV核酸检测方法,该方法不依赖复杂的检测仪器,任何能够提供恒温环境和检测荧光信号功能的仪器均可适用。因此,该方法适用于RSV即时检测,还可能应用于其他病原体感染的检测。

摘要：在比较和分析国外公益诉讼的基础之上,本文论证了在我国设立公益诉讼的必要性和合理性,并对我国公益诉讼制度的设计提出了具体的设想。

摘要：Mycobacterium tuberculosis FabH, an essential enzyme in mycolic acids biosynthetic pathway, is an attractive target for novel anti-tuberculosis agents. Structure-based design, synthesis of novel inhibitors of mtFabH was reported in this paper. A novel scaffold structure was designed, and 12 candidate compounds that displayed favorable binding with the active site were identified and synthesized. 2009 Song li. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

摘要：Many disadvantages exist in the traditional die design method which belongs to serial pattern. It is well known that heat treatment is highly important to the dies. A new idea of concurrent design for heat treatment process of die and mould was developed in order to overcome the existent shortcomings of heat treatment process. Heat treatment CAD/CAE was integrated with concurrent circumstance and the relevant model was built. These investigations can remarkably improve efficiency, reduce cost and ensure quality of R and D for products.