Results 81 to 90 of about 515,559 (127)

[End-to-end digital holographic phase reconstruction using an improved convolutional neural network]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Xiong Z, Zhou J, Tang B, Wang Z, Wang X.
europepmc   +1 more source

[Research progress of tibial plateau fracture associated with proximal fibular fracture]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Yang J, Zheng Z.
europepmc   +1 more source

盘形瓷绝缘子掉串事故的亚临界裂纹扩展诱因

Dianci bileiqi
2023年，西南地区某500 kV输电线路发生绝缘子掉串事故。对事故串绝缘子进行电阻测量及工频50 kV，1 min耐压试验，仅6片通过全部测试，推测绝缘子的低阻值劣化是导致绝缘子炸裂掉串的直接原因。为深入探究劣化机理，本研究基于有限元方法计算绝缘子实际服役环境下的载荷与应力分布，并结合材料力学理论，提出一种从亚临界裂纹扩展的角度阐释绝缘子劣化的新思路。研究表明：不考虑环境因素时瓷件应力低于30 MPa，即使考虑服役环境影响后应力增至49.6 MPa，仍低于瓷件60 MPa的抗拉强度 ...
任常春, 陈正雄, 陈众, 蒋渝
doaj  

[Comparison of Pulsatilla decoction formula granules versus its standard decoction for consistency of chemical components and bioequivalence in mice with ulcerative colitis]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhang J, Zhang X, Huang W, Ye D, Huang Z, Huang J, Weng X, Peng L, Dai W, Huang X.   +9 more
europepmc   +1 more source

Stress Relaxation Characteristics and Time Series Prediction Model of Mudstone with Holes under Water-rock Interaction

工程科学与技术
富水隧道围岩中孔洞缺陷会加剧软岩时效劣化，其应力松弛损伤机制及长期力学行为预测仍有待深入研究。以郑万高铁巴东段某隧洞泥岩为对象，开展水–岩作用下含不同孔深泥岩应力松弛及加载破坏试验，结合溶液pH值、离子浓度、扫描电镜和数字图像相关技术，研究孔洞深度对泥岩松弛特性、细观结构及破裂演化的影响；融合一维卷积神经网络的局部时间特征提取能力与长短期记忆神经网络的长期依赖表征能力构建CNN-LSTM应力松弛预测模型。结果表明：随孔洞深度增加，泥岩应力松弛量和稳定时间均增大，剩余应力比及峰值强度降低、破坏程度加剧；水–
WANG Yu, ZHANG Kun, LI Haoyang, ZENG Qinliang   +3 more
doaj  

[All-arthroscopic reduction and fixation of Pipkin type <b>Ⅰ</b> and <b>Ⅱ</b> femoral head fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Lü J, Wang H, Chen L, Ni Q.
europepmc   +1 more source

[Novel targets and drugs for the treatment of portal hypertension in liver cirrhosis]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Zhu CP, Xie WF.
europepmc   +1 more source

[Application of optical genome mapping technology in the genetic diagnosis of a family with a cryptic complex chromosomal balanced translocations]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Liu Y, Fan R, Ji T, Xu X, Hui L, Ma X.
europepmc   +1 more source

[Aesthetic outcomes of synthetic mesh in single-axillary approach endoscopic implant-based breast reconstruction]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Lin R, Tan Q, Xie Y, Lü Q.
europepmc   +1 more source

[Mechanisms of cGAS-STING signaling pathway mediated neuroinflammation in central nervous system and their therapeutic implications]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Yu X, Yao S, Xu P, Wang A.
europepmc   +1 more source