Results 111 to 120 of about 9,120 (157)

《现代高压电力断路器》

Gaoya dianqi, 1982
《现代高压电力断路器》,系日本电气学会讲座教科书的中译本。全书共分十章,前三章为基础理论,阐述电弧等离子体与灭弧现象、短路电流开断过程中的恢复电压计算 ...
doaj  

[Study on the electric field transmission characteristics of conducted-electrode tumor treating fields]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Liu K, Zhang J, Shi J, Fang H, Li X.
europepmc   +1 more source

2.4G天线的强电磁脉冲防护装置设计方法研究

Dianci bileiqi
针对强电磁脉冲对天线后端接收机造成损害的问题，本研究基于射频电路设计理论，利用理论与实验相结合的方法，通过理论计算设计出一个中心频率为2 450 MHz，带宽100 MHz，通带内插入损耗小于1.5 dB的微带线带通滤波器，并使用HFSS软件仿真并优化其性能，然后将浪涌防护器件与滤波器组合设计出强电脉冲防护电路，通过电路软件ADS（Advanced Design System）仿真防护电路的S参数，最后制作出实物进行测试。实验表明：设计的电磁脉冲防护装置在2 400~2 500 MHz 频段内 ...
李祥超, 王兵, 焦雪, 郭稳
doaj  

[Progress in regulating stem cell functions for repair and regeneration of craniomaxillofacial tissues]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Zhang H, Yang F, Yang R.
europepmc   +1 more source

HIRFL电源改造的研究

本文结合HIRFL电源系统的改造，介绍了极高稳定度大功率晶闸管-调整管混合调节的直流稳流电源和晶闸管整流的大功率高稳定度直流电源的设计方法。前言叙述HIRFL加速器系统及其对电源的要求、现状、存在的问题以及改造的有关问题。第一章以MI2注入电源为例介绍了电源结构、主变压器的选择与设计、晶闸管的选择、电源保护方案的设计，本章最后一节从理论角度分析了设计高稳定度电源的几个关键环节。第二章介绍了各种触发电路理论，比较其各自的优缺点。第三章描述了晶闸管同步与异步混合触发技术的设计方法 ...
吴伟
core  

[Impact of surgeon's dominant hand-side consistency with surgical approach on operational efficiency of unilateral biportal endoscopic lumbar discectomy: a prospective cohort study]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Li W, Gao M, Zhang L, Yu Q, Chen X.
europepmc   +1 more source

[Rehabilitation guidelines and specifications for traumatic spinal cord injury (2025 edition)]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Professional Committee Of Spine And Spinal Cord Injury Rehabilitation China Association Of Rehabilitation Of Disabled Persons, Professional Committee Of Spine Chinese Association Of Rehabilitation Medicine, The Second Medical-Rehabilitation Integration Working Committee Chinese Association Of Rehabilitation Medicine, Spine And Spinal Cord Injury Repair Study Group The Third Professional Committee Of Neurorestoratology Chinese Medical Doctor Association.   +3 more
europepmc   +1 more source

[Brain-controlled unmanned aerial vehicle system based on meta brain computer interface open-source software platform]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Li A, Mei J, Chen W, Tao L, Xu M, Ming D.   +5 more
europepmc   +1 more source

[Binary encryption comprehensive experiment based on agarose gel electrophoresis]. [PDF]

Se Pu
Duan JW, Ma L, Zhao Q, Wu QQ, Xin BY, Yang JH, Li Y, Wang QZ.   +7 more
europepmc   +1 more source

[Formononetin downregulates P53/SAT1/ACSL4 pathway-mediated ferroptosis to improve hypoxic-ischemic brain injury in neonatal mice]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Guo T, Chen B, Yang X, Zhao Y, Li X, He J, Shi J, Zuo H, Li J.   +8 more
europepmc   +1 more source