Jianzhu Gangjiegou Jinzhan基于可恢复功能的概念，提出了一种摩擦耗能型摇摆柱节点。阐述了该节点的构造形式并研究了其抗震性能。通过试验和数值模拟，分析了轴压比、弹簧刚度等参数对节点抗震性能的影响及节点在余震和修复情况下的韧性。研究结果表明，在±3%层间位移角内，节点呈现出低损伤特性，摇摆柱始终保持弹性。在轴向力作用下，滞回曲线呈明显的“旗帜形”，节点具有良好的自复位性能，最大残余转角仅为0.23%。通过重新拧紧螺栓，节点性能即可恢复至震损前水平，实现抗震韧性。弹簧刚度的增大可以显著提高节点的抗弯承载力；增大轴压比可以提高节点的“屈服”
李成玉 +4 more
doaj
[Application of internal brace ligament augmentation technology in repair and reconstruction of cruciate ligament injuries]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiYang H +5 more
europepmc +1 more source
[Finite element analysis of skeletal injury mechanisms in adult standing positions with both feet landed on the ground]. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanYuan H, Gao S, Wei Z.
europepmc +1 more source
[POEMS syndrome misdiagnosed as systemic sclerosis: A case report]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanLiang J, Zhang X, Yao H.
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[<i>Qingjie Fuzheng</i> Granules alleviates 5-fluorouracil-induced skeletal muscle injury in tumor-bearing mice by inhibiting mitochondria-dependent apoptosis and activating the AMPK-PGC-1α pathway]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoZhao J +5 more
europepmc +1 more source
Jianzhu Gangjiegou Jinzhan传统碗式节点作为一种典型装配式节点，常应用于大跨度空间网格结构，但因其抗弯刚度较小，使其应用范围受限。基于此，对传统碗式节点进行改进，提出了一种抗弯性能更好的喷头式节点。首先，对喷头式节点进行设计，并对喷头式节点与碗式节点进行了纯弯作用下的有限元模拟，对比了二者的抗弯性能；然后，研究了周围螺栓半径、轴向压力和轴向拉力对喷头式节点抗弯性能的影响；最后，建立了喷头式节点弯矩-转角的幂函数模型，采用模拟退火算法得到了该模型曲率系数，利用多元非线性拟合方法确定了相关的模型参数，并对幂函数模型进行了评估。结果表明，
李韧, 肖志成, 李会军, 李宝辉
doaj
[Numerical analysis research on the impact of tibial tray fixation peg structure on initial fixation stability in total knee arthroplasty]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLing Y +6 more
europepmc +1 more source
Jianzhu Gangjiegou Jinzhan为解决刚接柱脚自复位装配式钢框架结构在中震或大震下底层柱可能发生较大的塑性变形的问题，设计一种半刚接柱脚自复位装配式钢框架结构。对其子结构进行拟动力试验，对比框架在Taft波、LOS000波和EL-Centro波在不同等级地震下节点开口、耗能能力、刚度退化、预应力损失、应变变化。试验结果表明，钢框架在大震作用下具有良好的自复位功能和耗能能力。钢绞线平均预应力损失最多仅1.58%，说明施加预应力的方法是可靠的。钢框架柱脚能始终保持弹性状态，从而震后仅需修复钢梁，大大减小修复成本。
张艳霞, 沈森, 李杨龙, 赵微
doaj
[Short-term effectiveness of minimally invasive treatment for posterolateral depressed tibial plateau fractures assisted by robots and arthroscopy]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiChen Z +8 more
europepmc +1 more source
[Design and research of a pneumatic soft intestine robot imitating the inchworm]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiHe Y +5 more
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