摘要：A series of new benzimidazole derivatives were designed and *** chemical structures were testified by 1 H NMR,infrared spectroscopy(IR),mass spectrography(MS),and elemental *** potent antiviral properties indicated the prospect of new *** 13,16,18,19,21,22,and 23 were identified as novel antivirus with much better selective activity and inhibitory activity than the comparable ribavirin against Coxsackie virus B_(3) in VERO cells.

摘要：A series of novel benzimidazole derivatives was synthesized and their anti-Coxsackie virus B3 （CVB3） activity was evaluated in VERO ceils. Compounds 9 and 10 exhibited better inhibitory activity than those of ribavirin （RBV） with IC50 values of 5.30 and 1.06 μg/mL, respectively. ？2009 Xian Jin Luo. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

摘要：以1台低速大尺寸轴流对转压气机为研究对象,利用布置在前/后转子叶顶的高频动态压力传感器阵列捕捉到其在不同转速配置和不同畸变条件下的失速初始扰动特征。通过分析在失速工况下采集到的压力波,得到的结果表明:当压气机来流均匀时,设计转速下的失速扰动类型为旋转失速,且传播方向与后转子旋转方向一致;当转速比为1.40时,成熟发展的失速扰动固定在周向某一位置,不沿周向旋转;随着前/后转子转速差进一步增大,转速比为1.52时的失速扰动类型又转变为旋转失速,但由于后转子对前转子尾迹的抽吸作用减弱,失速扰动传播方向与前转子转向一致。当改变压气机来流条件为周向进气畸变时,不同转速比下的失速扰动特征与均匀进气一致,但畸变会引起不同周向位置的失速前压力序列产生不同幅度的波动,利用联合经验模态分解-局部均值分解(EMD-LMD)方法捕捉到了随时间能量逐渐增强的失速前小扰动。

摘要：A series of 1,2,4-triazole derivatives were synthesized, and their abilities to inhibit the in vitro replication of Coxsackie B3/B6 were evaluated. Among the 1,2,4-triazole derivatives, compound 3 g displayed potent activity, with a high antiviral potency (IC50 = 1.71 μM (against CVB3), 1.43 μM (against CVB6)). The structures of all the new synthesized compounds were confirmed by 1H-NMR spectra, mass spectra and elemental analyses.

摘要：旋转蓄热催化氧化技术(RRCO)具有能耗低并且处理效率高等优点,在工业废气处理中占据着重要地位,本文以某焦化企业为研究对象,设计一套废气处理系统,利用布袋脉冲除尘+转轮浓缩+RRCO技术一体化处理,研究设备中的参数对运行情况的影响,确定较优设定参数,分析设备运行情况处理效率。

摘要：以往的研究表明,城市绿地对人类健康具有促进疗愈和恢复的积极作用。传承了有益于人类健康和宜居性的城镇与乡村相结合的后花园城市—伦敦已成为世界上最绿色的城市之一,公园绿地也已深深融入伦敦市民的日常生活之中。本文作者对伦敦中心城区及郊区进行了实证型研究,通过客观评估和主观调查,就建成环境品质、使用者态度和疗愈感知进行了研究。本文尤其关注疗愈感知的感官层面,旨在重新解读当代背景下疗愈空间的转变,并探究疗愈绩效提升的关键标准。最后,本文提出一个概念化的框架,以提升城市绿地设计的疗愈功效。

摘要：随着大湾区高速公路网的不断完善,高速公路选址越来越趋于复杂的地形地貌条件,在施工中会面临各种各样的复杂工况。增天高速朱宁路跨线桥低净空下穿220kV高压线,上跨县道X268及龟岭村路交叉口,县道X268旁又有10kV高压线和地埋自来水管及多条通信线路、20~30m高的行道树,复杂的施工工况为该桥的箱梁架设增加重大的安全风险。通过对现场施工条件的精准分析,架梁方案设计分两种工况,采用架桥机和大吨位随车吊两种方案完成箱梁架设,未发生险性事件,为后续同类施工提供了借鉴。

摘要：为实现工业中对零件的非接触测量,提出了基于双目视觉立体匹配原理的阶梯轴轴径测量方法。该方法利用图像分割和灰度值梯度变化提取零件边缘,有效保证了零件边缘的连续性;使用线性回归求出轴类零件两端的旋转点,通过旋转点和轮廓上一点求出轴截面上的圆心三维坐标,最后使用空间距离公式求出轴段的半径。实验表明,该方法有效避免了求出的直径并非真实直径并且检测速度快,实验结果与理论半径对比,当阶梯轴半径在(7.5~15)mm之间时,该方法平均误差在0.2mm之内。

摘要：近年来,共享经济所引发的变革对城市空间和人们的生活方式产生了深远的影响。快速的城镇化进程和人口的急剧扩张使得城市中挑战与机遇并存,因而亟待构建一个周密详尽的社会规划和管理体系来应对这一问题。新加坡是亚洲地区少有的在高密度前提下仍然能够达到高宜居标准的城市范例。笔者通过策略回顾和案例研究,展示了新加坡在城市宜居性和可持续发展方面的实践经验,并提出决策制定、空间规划和场地管理三个关键议题。该研究有助于在共享城市发展的新纪元推动实施各项可改善公共健康状况和提高生活品质的策略。

摘要：In this paper,a coupled CFD-CSD method based on N-S equations is described for static aeroelastic correction and jig-shape design of large *** wing structural flexibility matrix is analyzed by a finite element method with a double-beam *** viscous multi-block structured grid is used in aerodynamic *** matrix interpolation is fulfilled by use of a surface spline *** load distributions on wing surface are evaluated by solving N-S equations with a parallel algorithm.A flexibility approach is employed to calculate the structural *** successive iterations between steady aerodynamic forces and structural deformations,a coupled CFD-CSD method is achieved for the static aeroelastic correction and jig-shape design of a large *** present method is applied to the static aeroelastic analysis and jig-shape design for a typical large airliner with engine nacelle and *** numerical results indicate that calculations of static aeroelastic correction should employ tightly coupled CFD-CSD iterations,and that on a given cruise shape only one round of iterative design is needed to obtain the jig-shape meeting design requirements.