Results 61 to 70 of about 722 (102)

[Progress on ultrasound-responsive piezoelectric drug delivery system for treatment of neurodegenerative diseases]. [PDF]

Zhejiang Da Xue Xue Bao Yi Xue Ban
Ma R, Chen Y.
europepmc   +1 more source

输电线缆耦合强电磁脉冲特性的分析

Dianci bileiqi
针对输电线缆耦合强电磁脉冲感应过电压的问题，利用有界波模拟器产生2.3/23 ns的电场波形，对LGJ和ZR-VVR两种架空输电线缆进行耦合实验，用直接实验法分析其不同条件下耦合到的感应过电压特征和差别。试验结果表明：电场强度在10 kV/m以下时，这两种输电线缆耦合到的电压随着电场强度的增加而增大并近似为线性增加；电压波形近似为阻尼振荡，振荡周期为纳秒级；输电线缆耦合到的电压会随着架空高度、入射仰角、横截面积、耦合长度的增大而增大。在输电线缆近端负载接50 Ω阻抗匹配时，耦合到的电压和能量最大 ...
李祥超, 王贤超
doaj  

[Extracellular matrix materials and tissue regeneration and repair]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Zhao L, Xie H.
europepmc   +1 more source

[Imaging Diagnosis of Ischemic Stroke Through Multiparametric Magnetic Resonance Angiography Enhanced by NaGdF₄ Nanoparticles]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Wu J, Ma Y, Yue S, Zhang X, Li W, Zhang N.   +5 more
europepmc   +1 more source

[Magnetic resonance imaging research progress of hydropic ear disease]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Wang Z, Liu C, Gao W, Lu L.
europepmc   +1 more source

基于变压器铁心接地电流的特高频局部放电检测方法研究

Gaoya dianqi
局部放电作为绝缘劣化的显著特征，是诊断变压器绝缘状况的重要依据。现有宽频脉冲电流检测易受到外界环境电磁干扰，特高频检测虽然具有良好的抗干扰性能，但其传感器的安装需与变压器结构相匹配而应用受限。文中提出基于变压器铁心接地电流的特高频局部放电检测方法，基于时域有限差分法建立变压器特高频仿真模型，仿真研究铁心对于特高频信号的接收性能，利用实体110 kV变压器进行局部放电实验，验证了该检测方法的可行性和有效性。结果表明，三相三柱式变压器中的铁心在367～533 MHz、1.29～1.36 GHz、2.06～2.
蔡玲珑, 马志钦, 廖梓豪, 周丹, 孙文星, 李中祥, 肖永健   +6 more
doaj  

[Research progress on repetitive transcranial magnetic stimulation for improving depression in Parkinson's disease]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Lu W, He B, Li J, Wen M, Zhang M.
europepmc   +1 more source

[Low-level laser therapy for the treatment of male infertility and erectile dysfunction]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Niu Y, Xin Z, Lin G, Ding P, Pan J, Feng Y, Guo Y.   +6 more
europepmc   +1 more source

[POEMS syndrome misdiagnosed as systemic sclerosis: A case report]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Liang J, Zhang X, Yao H.
europepmc   +1 more source

[Giant pleomorphic adenoma of the tubal torus: a case report and literature review]. [PDF]

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
Yang Y, Wu X, Zeng W, Chen J.
europepmc   +1 more source