Results 91 to 100 of about 20,428 (239)
Jianzhu Gangjiegou Jinzhan五边形三四撑杆全铰接弦支网壳区别于多撑杆索穹顶结构，是将索穹顶结构上层脊索转换为脊杆，形成一种由预应力索、杆组合而成的全铰接曲面双层网格结构体系，便于铺设刚性屋面，减少造价。与传统网壳结构相比，该结构具有良好稳定性和施工便宜性的特点。该结构下弦节点设置三根或四根撑杆，有效提高了整体结构的侧向刚度和稳定性，同时采取铰接节点形式连接，简化节点构造，便于张拉施工。针对五边形三四撑杆全铰接弦支网壳结构，建立ANSYS有限元模型，分析在不同组合工况下该结构索杆内力变化与位移规律。同时 ...
李丹, 吕辉, 董石麟, 朱忠义
doaj
神经丝蛋白NF-L与NF-M杂合分子的表达与组装——中等分子量神经丝蛋白的第1段杆状区(Coil1)是影响装配的结构域 [PDF]
, 1999 openalex +1 more source
Research of RNAi Components Expressing Multiple siRNAs Targeted to HIV-1 [PDF]
, 2009 艾滋病已成为一场人类、社会和经济的灾难，对个人、社区和国家都产生了深远影响。目前常用的艾滋病治疗方法是化学药物的鸡尾酒疗法，该方法可明显降低患者体内的病毒载量，控制病情的发展。然而，该方法并不能达到治愈艾滋病的效果，急需开发新的更为有效的治疗方法。RNAi是近年来发现的一种序列特异性的转录后水平抑制基因表达的机制，目前已在HIV-1的抗病毒研究中显示出巨大的应用潜力。然而，HIV-1具有的高突变率使得病毒很容易逃避传统的单靶点RNAi的抑制。多靶点策略是克服病毒突变逃避抑制的有效方法 ...
张涛
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The construction of p–n homojunctions represents a promising strategy for effective solar‐driven photocatalytic hydrogen evolution, owing to their inherent advantages of superior lattice matching and minimized charge transfer resistance. However, this approach remains largely unexplored.
Yueqiang Lin +6 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2018 <正>本期专辑主要收录了安徽和福建两省高校和企业的部分钢结构最新研究和应用成果本专辑涉及装配式钢结构、高层钢结构、大跨度钢结构、组合结构等研究领域具体内容包括:我国钢结构建筑产业化政策分析与推进机制;预制装配式组合梁栓钉连接件、预制冷弯薄壁型钢-轻聚合物复合墙体、中空夹层钢管混凝土柱单边螺栓端板连接节点等装配式钢结构新技术:开缝钢板剪力墙等高层钢结构抗震构件;圆钢管混凝土桁架节点等大跨度钢结构关键节点;中空夹层薄壁钢管混凝土、不锈钢管混凝土柱 ...
王静峰, 廖飞宇
doaj
, 1995 英国“巴林银行”事件将金融衍生市场的功能、作用与风险等问题推至金融讨论的焦点.本栏目推介一篇“金融衍生市场评介”,并将在“金融市场”栏目就“金融衍生市场”及“巴林银行”事件相关问题展开讨论 ...
秦国楼
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MXene‐Based Materials: Compositional Engineering for High‐Performance Microwave Absorption
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The rapid advancement of aerospace and electronic information technologies has imposed increasingly stringent requirements on microwave absorbing materials (MAMs), such as high absorption efficiency, lightweight, and environmental stability, making the development of advanced MAMs urgent for both civilian and national defense applications ...
Pan‐Pan Zhou +8 more
wiley +1 more source
Disaster Cross‐Sector Collaboration Networks: Evidence from Four Historical Disasters
Risk, Hazards &Crisis in Public Policy, Volume 17, Issue 1, March 2026.ABSTRACT By conducting content analysis and social network analysis of media coverage of four historical disasters (i.e., the 2011 Joplin Tornado, 2013 Moore Tornado, 2017 Hurricane Harvey, and the 2023 Maui wildfire), this study uncovered characteristics of cross‐sector disaster collaboration networks.
Xiaochen Angela Zhang, Jonathan Borden
wiley +1 more source
纳米HA/CS支架穿“靴”复合软骨样细胞修复兔关节软骨和软骨下骨缺损
Zhongshan Daxue xuebao. Yixue kexue ban, 2012 【目的】观察把骨髓间质干细胞(BMSCs)诱导成的软骨细胞与纳米羟基磷灰石/壳聚糖支架(nano-HA/CS scaffold)通过特殊的穿“靴”结构复合构建而成组织工程软骨复合体的可行性,并观察此复合体修复兔膝关节软骨及软骨下骨缺损的能力。【方法】原位复合和冷冻干燥相结合的方法制备nano-HA/CS 支架,用聚四氟乙烯制作成圆柱形“靴”结构。把BMSCs经软骨诱导液诱导成软骨细胞后,接种于穿“靴”的nano-HA/CS 支架底部,把细胞-支架复合物置入成软骨条件培养液中培养2周。扫描电镜观察nano-
doaj
Impact resistance performance of rockbolt system with(out) rubber cushion energy absorbing and buffering components [PDF]
The practice of impact resistance support in dangerous roadways has shown that energy absorbing and buffering components can improve the impact resistance performance of rockbolt support systems. A rubber cushion layer was used as an energy absorbing and
Fuqiang GAO +8 more
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