Gaoya dianqi油浸式电力变压器是电网系统重要的电力设备之一，其冷却介质以绝缘油为主。目前，矿物绝缘油的应用较为广泛，但存在不易降解、泄漏后危害环境等缺点。天然酯作为一种新型变压器用绝缘油，能够避免上述问题，同时带来更为优异的电气性能，是一种更为理想的绝缘冷却介质。然而天然酯绝缘油与矿物绝缘油在机械特性及电气特性上存在较大差异，其对变压器结构设计及绕组散热的影响仍有待深入研究。文中以一台110 kV电压等级的天然酯绝缘油变压器为研究对象，基于有限元方法对变压器绕组的温度场分布进行计算 ...
宋浩永 +3 more
doaj
[Veratric acid relieves oxidative stress and DSS-induced colitis in mice by activating the Nrf2/HO-1 signaling pathway]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoYin L +8 more
europepmc +1 more source
[Ovarian tissue cryopreservation and transplantation: a review of clinical progress in fertility preservation]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanChen J, Feng C, Jin M.
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Gaoya dianqi以洁净空气作为绝缘介质的环境友好型开关设备符合绿色环保理念和“双碳”目标要求，罐式高气压产品更容易解决绝缘及散热问题，但是其大电流发热温升问题仍较为突出。针对40.5 kV/2500 A大电流环保型开关设备在开发中遇到的1.1倍额定电流下的温升问题，文中构建了其三位置开关及母线样机模型，采用电磁—热—流多物理耦合仿真方法，研究了其温升特性，并通过试验对仿真结果进行了校验。对原有样机模型进行了结构优化，仿真对比了结构优化前后的温升，2750 A自然冷却条件下，原结构最大温升为66.2 K ...
刘顺凯 +6 more
doaj
[<i>Xiezhuo Jiedu</i> Recipe improves ulcerative colitis in rats by regulating Th17/Treg immune balance]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoLi B, Zhou X, Lang X, Kang X, Liu J.
europepmc +1 more source
[Development and electrophysiological validation of a temporal interference transcranial magnetic stimulation system for mice]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiCui C, Wang T, Zhang Y, Zheng W, Xu G.
europepmc +1 more source
[Development and practice of an interactive chromatography learning tool for beginners based on GeoGebra： a case study of plate theory]. [PDF]
Se PuZhang YH +5 more
europepmc +1 more source
[Characterization of the Effect of Tongue on Palatal Shelf Elevation Patterns in a Mouse Model of Palatogenesis]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanZhang Y, Yang H, Zhang D, Li D, Wang X.
europepmc +1 more source
[Efficient separation of gossypol from cotton kernels with copper mediated magnetic molecularly imprinted polymer]. [PDF]
Se PuYang SL +5 more
europepmc +1 more source