Results 51 to 60 of about 927 (102)

[Clinical study of percutaneous short-segment injured vertebra pedicle screw fixation combined with bone grafting in treatment of thoracolumbar fractures]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Jia L, Li X, Qian Y, Chen M.
europepmc   +1 more source

[Research progress of tibial tunnel positioning techniques in posterior cruciate ligament reconstruction]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li R, Liao Y, Guo F, Chen Q, Li S, He C.
europepmc   +1 more source

[Expert consensus on clinical randomized controlled trial design and evaluation methods for bone grafting or substitute materials in alveolar bone defects]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Liao X, Xue Y, Zheng X, Wang E, Pan J, Zou D, Zhao J, Han B, Liu C, Hua H, Liang X, Shang S, Wang W, Liu S, Wang H, Wang P, Feng B, Ju J, Zhang L, Hu K.   +19 more
europepmc   +1 more source

[Analysis of associated factors for the ectopic eruption of adjacent first permanent molars after stainless steel crown restoration of second primary molars]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Dai W, Huang S, Zhang Z, Sun X, Zhang F.
europepmc   +1 more source

[The guideline for the diagnosis and treatment of marginal zone lymphoma in China (2025)]. [PDF]

Zhonghua Xue Ye Xue Za Zhi
Hematological Oncology Committee of China Anti-Cancer Association, Lymphoid Disease Group, Chinese Society of Hematology, Chinese Medical Association, Lymphoma Expert Committee of Chinese Society of Clinical Oncology (CSCO), Chinese Workshop of Indolent Lymphomas.   +5 more
europepmc   +1 more source

超特高压环氧绝缘件超声检测技术及典型缺陷声学回波特征分析

Dianci bileiqi
超特高压环氧绝缘件内部缺陷的可靠检测对于保障电力设备安全可靠运行具有重要意义。文中提出基于超声脉冲反射法实现超高压环氧绝缘件内部气孔、气隙、密度不均等缺陷的有效检出。论文基于声场仿真技术分析多时空尺度下超声波在环氧复合材料内的传播规律，探寻影响环氧复合材料内部缺陷检测灵敏度的关键因素，掌握不同缺陷直径、尺寸、深度下超声回波信号的特征。为验证理论分析有效性，搭建了超声检测试验平台并对特高压盆式绝缘子典型缺陷试样进行了相关的检测试验 ...
陈田, 胡睿智, 魏鼎欣, 梁新钰, 刘鹏, 陈宸   +5 more
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[Multiple primary malignancies combined with SWI/SNF complex-deficient gastric cancer: a case report and literature review]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao, 2023
Lü C, Wu X, Xia Q.
europepmc   +1 more source

基于改进YOLOv5s的绝缘子缺陷检测方法

Gaoya dianqi
基于无人机航拍的电力巡检成为目前绝缘子缺陷检测方法的主流，但当遇到图像特征不够明显或干扰特征较多等问题时，绝缘子缺陷识别困难，检测精度不高。由此，提出了一种基于改进YOLOv5s的绝缘子缺陷检测方法。首先，重新设计卷积模块，然后将CA注意力机制与其相融合，并且在主干网络加入注意力机制与颈部网络的特征图进行多尺度特征融合，抑制复杂环境下的干扰特征，专注缺陷特征提取；其次，对空间金字塔池化结构（SPPF）进行改进，扩大感受野，减少被模型过滤掉的有用信息；接着，将Transformer与C3模块中的残差结构 ...
彭晏飞, 袁晓龙, 赵涛, 陈炎康
doaj  

[Application of bilateral facial perforator artery flap in repairing large area defect in middle and lower part of nose]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2023
Xu Q, Li H, He X, Cai J, Wang H, Zhao J, Zhao L, Zhang X.   +7 more
europepmc   +1 more source

液晶图形显示高压输电线路复合绝缘子带电检测仪

Dianci bileiqi, 2009
专利申请号:CN200520006400.X公开号:CN2906674申请日:2005.11.07公开日:2007.05.30申请人:钱岷江液晶图形显示高压输电线路复合绝缘子带电检测仪,是一种带电检测高压输电线路复合绝缘子缺陷的装置,它能准确识别带电复合绝缘子的导通性缺陷、内部脱空和复合绝缘子串中的低零值绝缘。
doaj