Results 61 to 70 of about 384 (118)

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
doaj  

[Effect of trapezoidal and modified triangular flaps on mucosal blood supply and osteogenesis after guided bone regeneration]. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Chen S, Zhang X, Jia X, Xia R, Jiang F.
europepmc   +1 more source

[Development of a flexible embedded neurostimulator for animal robots]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023
Su Z, Wang D, Qi X, Yang C, Zhang Y, Liu K, Qin Y, Liu X.   +7 more
europepmc   +1 more source

[Neuroendocrine carcinoma with significantly vacuolar nucleus at the esophagogastric junction: A case report]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Hou W, Song S, Shi Z, Liu L, Jin M.
europepmc   +1 more source

[A comprehensive review on photon-counting computed tomography: Principles, technical hurdles and analysis of clinical applications]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023
Zhang H, Li S, Liu Y, Lu H.
europepmc   +1 more source

[The guidelines for diagnosis and treatment of chronic lymphocytic leukemia/small lymphocytic lymphoma in China (2025)]. [PDF]

Zhonghua Xue Ye Xue Za Zhi
Hematological Oncology Committee of China Anti-Cancer Association, Hematology Committee of Chinese Medical Association, Chinese Working Group for Chronic Lymphocytic Leukemia.   +2 more
europepmc   +1 more source

[Anthropometric assessment on prepubertal boys with hypospadias: a multicenter case series]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2023
Wang X, Chen H, Chao M, Yang B, Mao Y, Qin D, Wu Y, Zhang Y, Hu Y, Liu Y, Chen S, Tang Y.   +11 more
europepmc   +1 more source

基于脉冲辐射测量技术的RTV涂层质量评价方法

Gaoya dianqi
为防止污闪事故的发生，室温硫化硅橡胶涂层（RTV）被广泛应用于陶瓷和玻璃绝缘子表面。但随着运行年限的增加，孔洞、夹层污秽、交界面脱粘等缺陷的出现将严重影响RTV涂层的性能，给绝缘子的安全运行带来隐患。文中提出了一种基于脉冲辐射的RTV涂层质量在线无损检测方法，建立了绝缘子表面RTV涂层热波传递模型并求解了缺陷区域的表面温度分布；在时域与频域中，分别采用二阶微分峰值时间及最小相位频率平方根作为特征量，提出了涂层厚度的测量方法并比较了各自的效果。应用该方法对含有孔洞、夹层污秽 ...
朱文明, 张关应, 沈泽锴, 孙锐, 梅红伟, 王黎明   +5 more
doaj  

[Bacterial Infection Spectrum and Antimicrobial Resistance in 2850 Cases of Community-Acquired Pneumonia in Children]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Zhong M, Xie J, Wang H, Fan J, Li M, Zou F, Li L.   +6 more
europepmc   +1 more source

[Technical standards for the diagnosis and treatment of pediatric total facial management in Shenzhen]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi, 2023
Zhang Q, Dai J, Li L.
europepmc   +1 more source