Results 51 to 60 of about 779 (100)

变压器高压套管故障下乙炔生成规律及其扩散特性研究

Gaoya dianqi
针对变压器高压套管故障中C2H2气体生成机制不明确及产气后扩散行为难以预测的问题，开展了油纸在过热与击穿故障条件下的产气实验。研究表明，在过热温度达到800℃时，随着温度升高，相同时间间隔内采集的油样中乙炔含量逐渐增加；在击穿放电过程中，C2H2成为主要气体产物。此外，利用有限元方法对乙炔气体在不同注气位置、初始温度及温度梯度下的扩散特性进行了仿真研究。结果显示，均温条件下，注气点位置、油流状态及温度分布显著影响气体扩散速度及体积分数分布，且不同注气点设置会导致扩散路径的变化。非均温条件下 ...
沈乐宇, 张伟, 陈川, 朱煦然, 蒙延宗, 刘博, 陈巳阳   +6 more
doaj  

[Research Progress of Peripheral Immune Tolerance in Oral Diseases]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Wen K, Zhang P, Peng X.
europepmc   +1 more source

[Refractory systemic lupus erythematosus-associated thrombocytopenia treated with avatrombopag: A case report]. [PDF]

Beijing Da Xue Xue Bao Yi Xue Ban
Tang X, Ding Q, Zhang Y, Wang Y, Tian M, Sun Z, Wang R, Chen Y, Liu J.   +8 more
europepmc   +1 more source

[Exploring the research on the molecular mechanisms of autoimmune liver diseases]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Liu YQ, Jiang XW, Li Y, Liu XL.
europepmc   +1 more source

[Guidelines for the diagnosis and management of first relapsed multiple myeloma in China (2026)]. [PDF]

Zhonghua Xue Ye Xue Za Zhi
Plasma Cell Disease Group, Chinese Society of Hematology, Chinese Medical Association, Chinese Myeloma Committee-Chinese Hematology Association.   +3 more
europepmc   +1 more source

基于自生成小波变换的配电电缆高阻故障精确定位方法

Gaoya dianqi
高阻故障是配电电缆常见故障形式之一，其准确定位对提升电网运行可靠性具有重要意义。针对传统小波变换中母小波需预设、难以与实际故障信号特征自适应匹配的问题，文中提出一种基于自生成小波变换的高阻故障定位方法。首先利用ATP-EMTP建立电缆分布参数模型，分析高阻故障击穿的波传播特性。其次，以故障波形初始段自适应生成母小波，并进行连续小波变换提取特征频率，实现故障精确定位。仿真结果表明，所提方法平均定位误差仅为0.168%，在鲁棒性、计算效率及采样频率适应性方面均优于传统过零点检测、傅里叶变换 ...
严有祥, 吴桐, 李振嘉, 陈静怡, 林智雄   +4 more
doaj  

[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

["Chongqing experiences" in treatment of bone infections]. [PDF]

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
Xie Z.
europepmc   +1 more source

一起特高压输电线路圆柱头悬式瓷绝缘子劣化原因分析

Dianci bileiqi
使用红外检测技术发现了某特高压交流输电线路圆柱头悬式瓷绝缘子发生异常发热现象，这一发现对于及时诊断和分析特高压圆柱头悬式瓷绝缘子劣化具有重要意义。为了研究劣化机理，分别通过绝缘电阻试验、工频击穿电压试验、抽样试验、瓷件解剖试验、X射线衍射试验和扫描电镜试验，全面评估了劣化样品的电气、机械和材料性能。结果表明，瓷件头部存在微裂纹及水泥胶装层存在大量气孔是造成本次瓷绝缘子劣化的主要原因。本研究不仅为瓷绝缘子的失效分析提供了科学依据，也为制定有效的预防措施和改进策略提供了指导 ...
胡睿哲, 况燕军, 吴朝晖, 李唐兵, 邹建章   +4 more
doaj  

[Efficacy and safety analysis of BTK inhibitors combined with R-CHOP regimen in newly diagnosed double-expressor diffuse large B-cell lymphoma]. [PDF]

Zhonghua Xue Ye Xue Za Zhi
Lu JB, Cao L, Liu HL, Miao Y, Shen HR, Xia Y, Yin H, Cheng YX, Li JY, Fan L.   +9 more
europepmc   +1 more source