Results 71 to 80 of about 2,014 (116)
[Advances in application of cell imprinting technology in biomedical field]. [PDF]
Se PuZhao XM, Zhang ZY, Sun WJ, Qing GY.
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Gaoya dianqi由于受各断口合闸操动分散性、触头表面状况迥异、真空间隙击穿电压的分散性等影响，双断真空断路器的关合预击穿现象往往表现为各断口的非同时预击穿。现阶段仍缺乏串联真空间隙的非同步关合预击穿特性相关研究，文中目标是实验研究双断口真空断路器非同步关合的预击穿开距和预击穿电压分布的特性。实验以两个串联连接的12 kV商用真空灭弧室为研究对象，设置4组关合实验条件：两个断口同步关合、低压侧比高压侧快1 ms关合、高压侧比低压侧快0.5 ms关合、高压侧比低压侧快0.2 ms关合 ...
王毅钊 +5 more
doaj
[Case of tooth autotransplantation with robotic surgery assistance]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiLiu Y +6 more
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[Diffusion cycle-consistent generative adversarial networks for pelvic active bone marrow segmentation]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoZhuo L +5 more
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[Design and synthesis of molecularly imprinted polymers and their applications in medical diagnosis and biocatalysis]. [PDF]
Se PuSong Q, Li X, Lyu Y.
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Gaoya dianqi随着新型电力系统建设的持续推进，系统特性的变化要求变电站并联电容组无功投切更加频繁，但更适应于频繁投切场景的真空断路器，因涌流影响下重击穿概率高的问题而在高电压等级电容器组应用较少。为解决真空断路器在电容器组投切场景下的弊病，文中以快速真空断路器为基础，实验研究实际工频电压作用下真空断路器预击穿特性，分析关合工频电压预击穿瞬时值与触头开距的关系，获得电容器组投切快速真空断路器相控关合策略，确定了在1.21、1.43、1.83 m/s合闸速度条件下快速真空断路器关合预击穿绝缘强度下降率（RDDS）带状区域，
马飞越 +6 more
doaj
[Progress in the application of robotic technology in thyroid surgery]. [PDF]
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za ZhiWu D +6 more
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[Review of application of U-Net and Transformer in colon polyp image segmentation]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiShi Y, Sun S, Liu J, Ma J, Li M.
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[Mechanisms and protective strategies for astronaut skin injury in deep space environments]. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanXie Y, Zeng J.
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