Results 111 to 120 of about 3,961 (150)

[Applications of molecularly imprinted solid-phase microextraction coupled with chromatography/mass spectrometry for determination of drug residues]. [PDF]

Se Pu
Yan J, Huang J, Peng S, Man M, Sun D, Liu P, Chen L, Li J, Fan H.   +8 more
europepmc   +1 more source

[Effects of cold atmosphere plasma treatment on the biological behavior of human gingival fibroblasts]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Zheng M, Ma X, Chen H, Zhao H, Zhang Y, Tan J, Li H, Wang X.   +7 more
europepmc   +1 more source

改进型钢管混凝土柱-H型钢梁槽型端板节点抗震性能研究

为研究方钢管混凝土柱与H型钢梁槽型端板连接节点的抗震性能，对3个槽型端板连接节点和1个普通端板连接节点开展了低周往复加载试验，研究了节点的破坏机理与特征、承载能力、节点区应力分布以及抗震性能等，分析了节点构造参数不同对其抗震性能的影响。在试验研究基础上，采用ABAQUS有限元软件进行了有限元适应性验证和参数分析，对比了槽型端板连接节点和普通端板连接节点承载力、延性和转动刚度的差异性。试验研究表明：试件均在端板和梁翼缘连接处出现对接焊缝撕裂以及焊缝附近母材断裂现象，普通端板发生了明显翘曲 ...
孙凯琦, 王净杰, 王延彬, 高春彦   +3 more
core  

碟簧螺栓连接柱脚节点滞回模型与性能研究

框架结构在地震作用下易在柱脚形成塑性铰，构建损伤可控且具有复位能力的柱脚节点可有效提高框架结构的抗震性能和韧性。基于工程实用的螺栓和盖板连接，提出了碟簧螺栓和屈曲约束翼缘盖板，分别作为恢复和耗能元件，形成一种碟簧螺栓连接柱脚节点。推导了节点的理论滞回模型以及部分构件的内力计算公式，采用ABAQUS软件建立了节点有限元模型并进行了滞回分析。结果表明，提出的节点滞回曲线呈典型的旗帜型，损伤集中于屈曲约束翼缘盖板的核心板，碟簧螺栓有效地降低了节点残余变形；有限元模型与理论滞回模型相互验证，两种结果吻合较好 ...
冯玉龙, 李超男, 种迅, 蒋庆, 黄俊旗   +4 more
core  

[Application and progress of artificial intelligence agents in drug development]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Zhao D, Hsieh C.
europepmc   +1 more source

[Heterogeneity of tumor-associated macrophages and precision targeting strategies in hepatocellular carcinoma]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Huang K, Zhang GQ.
europepmc   +1 more source

[Recent Advances in the Interorgan Regulatory Roles of Adipose Tissue]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Li Z, Xu C, Xu R, Zhou C, Fan Y.
europepmc   +1 more source

[Review of application of U-Net and Transformer in colon polyp image segmentation]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Shi Y, Sun S, Liu J, Ma J, Li M.
europepmc   +1 more source