Research progress in pelvic floor ultrasound for assessing the morphology and function of levator ani muscle in women. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2023 Li D, Lu R.
europepmc +1 more source
Gaoya dianqi高压输变电设备中的GIS开关，长期以来一直以SF6作为主要的灭弧和绝缘介质。SF6虽具有极为稳定的化学性质这一优点，但过量排放会引发全球变暖这一弊端也不容忽视。正因如此，国内外学者不断对其替代气体进行深入研究与试验。文中以洁净空气为绝缘气体，对环保型126 kV GIS盆式绝缘子进行设计优化。以现有的126 kV SF6绝缘GIS盆式绝缘子结构为基础，采用控制变量法，对导体中心距φD、导体与壳体气隙距离H、接地屏蔽环半径R、盆式绝缘子厚度T等关键尺寸进行优化。通过大量仿真计算和对比分析 ...
王瑶 +4 more
doaj
Perianal Paget's disease complicated with lung adenocarcinoma and anal canal carcinoma: A case report and literature review. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2023 Zhou L, Yang M, Wang T, Zhang J.
europepmc +1 more source
Dianci bileiqi对某发生故障的110 kV GIS用盆式绝缘子进行全面分析，通过宏观检查、渗透检测、X射线检测、断口宏观分析和断裂面能谱分析等方法，并经过仿真模拟验证，分析判断出盆式绝缘子开裂的原因，是盆式绝缘子在制造过程中存在原始缺陷及微裂纹，在后期安装、使用过程中产生应力集中，最终发生贯穿性开裂，导致漏气。为避免同类型故障的再次发生，提出同批次产品更换检测、严格监造期间盆式绝缘子渗透试验见证等建议，提升盆式绝缘子入网质量，保障电网安全稳定运行。
吕岩婷 +4 more
doaj
Gaoya dianqi, 2018 盆式绝缘子是GIS最薄弱的绝缘环节。文中统计了GIS故障缺陷类型,对GIS故障发生率进行了计算。针对盆式绝缘子沿面闪络特性影响因素进行了系统分析,包括金属颗粒、绝缘子表面缺陷、表面电荷等。探讨了金属颗粒荷电和受力情况、运动特性及其抑制措施。对盆式绝缘子表面缺陷类型、演化过程及其检测方法进行了探索。直流电压下,GIS盆式绝缘子表面极易积聚大量电荷,文中对相关作用机理、测量方法和动态过程进行了总结。详细阐述了轮廓优化,介电涂层和功能梯度材料等提高沿面闪络电压方法的特点和应用范围 ...
孙秋芹 +6 more
doaj
Prediction of pelvic lymph node metastasis in prostate cancer using radiomics based on T2-weighted imaging. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2022 Liu X +5 more
europepmc +1 more source
[A new measurement method of offset in total hip arthroplasty]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2022 Qu W +5 more
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[Artificial intelligence assisted total hip arthroplasty for patients with Crowe type Ⅳ developmental dysplasia of the hip]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2021 Xia T +8 more
europepmc +1 more source
[Treatment of femoral neck fractures with closed reduction assisted by joystick technique and cannulated screw fixation]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2023 Wang L, Zhang J, Liu X, Wu Z, Wu A.
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Desmoid-type fibromatosis of the mesentery: a clinicopatho-logical and genetic analysis of 9 cases. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2023 Wang Q, Zhang L, Weng S, Zhou J, Gan M.
europepmc +1 more source