Gaoya dianqi近年来，海上风力发电发展迅猛，作为连接陆地电网与海上风电场的唯一枢纽，海底电缆线路极其重要。为充分利用电缆传输容量，提高风电项目经济性，文中同时考虑风电场送出电流的波动性以及电缆本体和环境的热惯性，基于实际典型负荷，仿真分析了海缆暂态温升特性。研究结果表明，直埋海底电缆具有较大的热时间常数，如在50%长期负荷基础上施加满负荷电流48 h后，电缆线芯温度仍未达到90 ℃。1 000 MW的风电场采用2回330 kV线路送出，仅3×1 000 mm2的海缆即可满足输送功率要求，而按照100 ...
吴高波 +5 more
doaj
Dianci bileiqi胶浸纸穿墙套管是直流输电工程换流站直流场与阀厅的连接设备，运行条件严酷，需要长期承受机、电、热等多种应力作用，其可靠性对系统安全至关重要。胶浸纸穿墙套管是典型的长悬臂结构，机械应力集中更加突出，因此其重负荷下的绝缘性能研究具有重要意义。国内外现行标准均开展单因素试验考核，与实际多因素工况存在一定差异，尚未见有关直流穿墙套管多因素试验研究的报道。本研究以某典型胶浸纸直流穿墙套管缩比单元电容芯体为研究对象，重点开展重负荷状态下电容芯体的绝缘性能测试。试验数据表明未加悬臂负荷时局部放电合格的电容芯体 ...
张晋寅 +7 more
doaj
[Overwork damages myocardial energy metabolism homeostasis in mice]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoCui J +6 more
europepmc +1 more source
[<i>Qingjie Fuzheng</i> Granules alleviates 5-fluorouracil-induced skeletal muscle injury in tumor-bearing mice by inhibiting mitochondria-dependent apoptosis and activating the AMPK-PGC-1α pathway]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoZhao J +5 more
europepmc +1 more source
[Systemic lupus erythematosus complicated by autoimmune nodopathy: A case report]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanWei C, Yang Y, Zhao X, Liu X, Jia Y.
europepmc +1 more source
Gaoya dianqi温度是影响电缆附件绝缘性能的关键因素。文中分析了不同硬度硅橡胶材料的红外光谱和玻璃化转变特性，测试分析了高低温环境-40~+60 ℃下不同硬度电缆附件硅橡胶材料的介电性能、电阻特性和击穿特性；从微观层面，通过计算分析不同温度硅橡胶的自由体积和均方位移等参数，揭示了高低温对硅橡胶材料绝缘性能的影响机理。研究表明，随着温度升高，硬度40 HA硅橡胶相对介电常数从3.66下降到3.22，下降约12%，相比而言90 HA硅橡胶下降约15%；两者介质损耗角正切值在-40~+60 ℃范围内均基本不变，平均值分别为1.
张帆 +7 more
doaj
[Effect of Blood Biochemical Indicators on Exercise Duration in Patients With Stages 3-5 Chronic Kidney Disease: The Mediating Role of Physical Function Status]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanYang Y, Chen H, Liu W, Qi X.
europepmc +1 more source
[The role of polyunsaturated fatty acid lipid peroxidation in ferroptosis after intracerebral hemorrhage: a review of mecha-nisms and therapeutic implications]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanGuo M, Zhao G, Cai Z, Zhang Z, Zhou J.
europepmc +1 more source
[Single-cell transcriptomic analysis reveals immune dysregula-tion and macrophage reprogramming in diabetic foot ulcers]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanHuang C +5 more
europepmc +1 more source
[Role and Mechanism of High Mobility Group Box 1 in Mediating Depression-Like Behaviors in Mice via Regulation of the 5-Hydroxytryptamine Receptor 7 Signaling Pathway]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanDU O, Duan S, Tang L, DU J.
europepmc +1 more source