Results 121 to 130 of about 997,974 (152)

[Prospects and developments in the technologies of high frequency oscillatory ventilation]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2021
Yuan Y, Zhou L, Liu W, Dai Z, Chen Y.
europepmc   +1 more source

高频大功率SiGe/SiHBT的设计

open access: yes, 2006
详细地阐述了高频大功率SiGe/Si异质结双极晶体管(HBT)设计中的一些主要问题,主要包括器件的纵向设计中发射区、基区以及收集区中掺杂浓度、形貌分布、层厚的选择以及横向布局设计中的条宽、间隔的选择等 ...
王启明, 薛春来, 成步文, 姚飞
core  

[Research on blood viscoelasticity detection based on electrowetting technology]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wang C, Huo W, Yang L, Huang X, Yang W.
europepmc   +1 more source

基于TDOA的变压器局放组合定位与监测天线优化布置方法研究

open access: yesGaoya dianqi
变压器局部放电的准确检测对电力设备的状态评估与电网安全至关重要,针对基于真型变压器的局部放电特高频信号传播特性研究较少,少有学者细致剖析变压器内特高频信号所具有的传播特性,文中首先对局部放电特高频电磁波传播特性与衰减特性进行了研究与分析,同时提出了一种特高频局放定位方法,即一种基于TDOA的UHF法变压器局放组合定位方法,这些研究为监测天线优化提供了一定的理论基础。接着文中对Peano分形天线进行了研究,同时设计了新的特高频油阀式天线,然后通过在变压器内布置多个局部放电源 ...
沙伟燕, 何宁辉, 张佩, 张方博
doaj  

[A frequency-adaptive implicit neural representation method for medical image compression]. [PDF]

open access: yesNan Fang Yi Ke Da Xue Xue Bao
Song H, Shi H, Li Y, Bian Z, Zeng D.
europepmc   +1 more source

[A method for predicting neurological outcomes after cardiac arrest based on time-frequency domain feature fusion]. [PDF]

open access: yesSheng Wu Yi Xue Gong Cheng Xue Za Zhi
Wang X   +5 more
europepmc   +1 more source

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