Gaoya dianqi以电力系统中广泛使用的典型三绕组240 MVA/220 kV电力变压器为例，阐述了高阻抗变压器实现的工作原理和4种典型结构特点，分析了不同短路工况下的抗短路能力，并对3种典型结构高阻抗变压器的抗短路性能进行了对比分析，评估了不同结构高阻抗变压器的短路性能优劣性。结果表明，高压内置和串抗结构高阻抗变压器均具有较好的抗短路性能，且串抗结构在高中低绕组轴向力及垫块压缩应力、调压绕组环向应力和变压器端部轴向作用力方面更具有优势，且整体抗短路性能最好。
胡诗尧 +5 more
doaj
[Follow-up study evaluating morphological changes in alveolar bone in the maxillary anterior region after extraction retraction in adult patients treated with clear aligners on the basis of cone beam computed tomography data]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiHong X +5 more
europepmc +1 more source
Gaoya dianqi高压大容量电力变压器内部存在较大的绕组漏磁，使变压器的金属结构件存在较大涡流，导致变压器内部产生大的电磁干扰。文中研究了变压器夹件涡流引起的电磁干扰机理。采用有限元方法计算了变压器夹件的磁感应强度、涡流和夹件所受的电磁力，分析了电磁力的分布特点。研究了夹件在电磁力作用下产生电磁振动和噪声的原理，根据夹件的筋结构建立了电磁振动的有限元模型，对夹件的振动位移、振动速度进行了计算，并对此振动产生的噪声进行了分析计算。针对夹件的两种不同磁屏蔽结构，通过对夹件电磁振动最小的固定位置研究，得到了夹件减振的最佳方法 ...
杨慧娜, 温珺, 丛浩熹
doaj
[Rehabilitation guidelines and specifications for traumatic spinal cord injury (2025 edition)]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiProfessional Committee Of Spine And Spinal Cord Injury Rehabilitation China Association Of Rehabilitation Of Disabled Persons +3 more
europepmc +1 more source
[Extracellular matrix materials and tissue regeneration and repair]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhao L, Xie H.
europepmc +1 more source
[Determination of 40 carbonyl compounds in ambient air by high performance liquid chromatography-triple quadrupole mass spectrometry]. [PDF]
Se PuLi GH +8 more
europepmc +1 more source
[Correlational research on body fat rate and skeletal muscle rate with depression in the population of assisted reproduction]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanSong X +6 more
europepmc +1 more source
[How I treat vasovagal syncope in children]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiZou RM, Wang C.
europepmc +1 more source
[Researches and clinical translation of smart dressings]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiLyu GZ, Zhao P.
europepmc +1 more source