[Flap design and preliminary clinical experience of the lower trapezius musculocutaneous flap carrying a portion of the latissimus dorsi muscle]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2021 Xie T +6 more
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Gaoya dianqi, 2012 综述了SF6断路器极限开断能力以及介质开断能力的数值预测方法的最新研究进展。电流过零前200 ns的电弧电导（G200）是判断断路器热开断能力的一个重要参数,为计算G200,对电弧特性进行模拟,在燃弧阶段采用磁流体动力学模型,而在接近电流零区采用Mayr模型,从而建立相应的电路模型来确定电弧时间常数和电弧功率损耗系数等参数,以分析高压断路器的热开断能力。为判断电击穿能力,需要根据电弧过零时灭弧室内的每一点的压力和温度值,确定对应点的临界击穿场强分布Ec,同时计算在暂态恢复电压作用下灭弧室内的电场分布Ea,
牟京卫 +5 more
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Gaoya dianqi, 1973 对SF6灭弧性能的研究表明,它可以不增加气体压力和串联断口数而提高断路器开断短路电流的能力。 用SF6熄弧 SF6气体的灭弧效力约为空气的八倍,性能最好的空气断路器的压力比SF6断路器的压力约需高四倍,而在严重的近区故障条件下介质恢复速率仅为SF6的一半。这种卓著的效能通常以介质恢复时间常数或以断点间的去游离过程来表示。在高效能的SF6断口中,时间常数仅为一微秒的几分之一,而在压缩空气熄弧中,可达数微秒。
李建基
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[Research progress on paper-based microfluidic chips in pathogen detection]. [PDF]
Se PuLiu XT, Shi J, Shi M.
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[Bacteriophage Therapy: Retrospective Review and Future Prospects]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2021 Tian EK, Wang Y, Wu ZX, Wan ZQ, Cheng W.
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[Research progress in repair and reconstruction of tumor-related bone defects in proximal femur]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiTan L +9 more
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[Progress in microsurgical repair and reconstruction techniques and development of microsurgery in China]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiGu L.
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[Effectiveness of sacroiliac screw implantation assisted by three-dimensional printed faceted honeycomb guide plate in treatment of posterior pelvic ring fracture]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiSheng B +7 more
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[Advancement in neutrophil-based drug delivery systems]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanZhou Z, Tang L.
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Gaoya dianqi电容器组投切断路器触头烧蚀劣化后会改变合闸预击穿时间，这不仅会影响选相合闸效果，同时也说明预击穿电弧持续时间可作为衡量触头烧蚀状态的指标之一。建立了126 kV SF6断路器灭弧室内合闸预击穿过程电—流体耦合仿真模型，研究了触头劣化过程中合闸预击穿特性，并提出了预击穿时间带电检测方法。结果表明：合闸过程中场强最大点总是出现在静弧触头表面；灭弧室内SF6气体密度几乎保持不变；110 kV电压等级相电压下，触头预击穿电弧持续时间随烧蚀程度变化的试验值与仿真值吻合良好 ...
马飞越 +6 more
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