Numerical simulation of a borehole sidewall acoustic transmitter for single-well reflection imaging logging. [PDF]
Sci RepBen J, Zhang H, Chen L.
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Jianzhu Gangjiegou Jinzhan为研究网架结构中钢管杆件损伤缺陷检测的问题，选择在杆端施加位移的方式进行有限元分析。考虑超声导波需要具有在特定频率范围内不发生频散的特征，选择L（0，2）模态超声导波开展无损检测。分析了适用于钢管无损检测的导波信号频率和信号周期特征，利用L（0，2）模态超声导波进行了不同圆周夹角的周向缺陷和不同长度轴向缺陷的导波检测。有限元分析结果表明，考虑多模态叠加和最大反射率的影响，频率为70 kHz周期为10的Hanning正弦信号激励的超声导波适用于钢管杆件的缺陷检测；当钢管缺陷宽度与深度不变时 ...
曹栋 +4 more
doaj
[Expert consensus on the diagnosis, treatment, and management of liver nodules (version 2026)]. [PDF]
Zhonghua Gan Zang Bing Za ZhiInfectious Diseases Prevention and Control Branch +1 more
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[Research progress of lymphaticovenous anastomosis in treatment of secondary lymphedema]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiLuo Z, Xiao S, Deng C.
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[Meige syndrome with dyspnea as main manifestation: a report of one case and literature review]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiLiu T, Xu J, Ye J.
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[The experimental study of <sup>18</sup>F-NaF micro PET/CT imaging in a mouse-model of acute gouty arthritis]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiYou Z +7 more
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[Risk factors associated with non-radiographic bone erosion in patients with gout]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanLiu W +7 more
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[Advances in the assessment and management of voice disorders]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiXu W.
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[Analysis of portal vein thrombosis formation and risk factors after endoscopic treatment in patients with esophagogastric varices in liver cirrhosis]. [PDF]
Zhonghua Gan Zang Bing Za ZhiCui YQ +9 more
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[Nasopharyngeal carcinoma in children: clinical analysis of 6 cases and literature review]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiTang ML, Zhang WL, Wang YZ, Zhang Y.
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