[Comparison of the efficacy of sigmoid sinus constriction plus cartilage reconstruction and sigmoid sinus return surgery in sigmoid sinus-related pulsatile tinnitus]. [PDF]
Cao W, Wu Z, Zhao Y, Tong B, Yao K.
europepmc +1 more source
[Simultaneous determination of 15 bisphenols in prepared dishes by soild phase extraction purification-ultra performance liquid chromatography-tandem mass spectrometry]. [PDF]
Zhan ZY +5 more
europepmc +1 more source
[Determination of squalene and oxidized squalene in edible oil by gas chromatography-tandem mass spectrometry and evaluation of the thermal stability of squalene]. [PDF]
Xiao GP, Liao DD, Li GS, Luo X, Yuan L.
europepmc +1 more source
[Study on the thermal field distribution of cholangiocarcinoma model by magnetic fluid hyperthermia]. [PDF]
Cai Z, Lu M.
europepmc +1 more source
[Research progress on the pretreatment and analysis of prohibited components of glucocorticoids in cosmetics]. [PDF]
Liu L, Xiao XH, Fang JH, Li GK.
europepmc +1 more source
换流变压器是高压直流输电的关键设备,在其长期运行过程中,换流变压器阀侧套管在涡流损耗的影响下会引起套管温升,发热问题是导致套管性能的下降的重要原因。换流变压器阀侧套管在生产、安装及运行过程中不可避免的存在有金属颗粒等缺陷,在热应力的作用下会引起纹裂的产生,研究缺陷条件下套管内部温度场的变化对于改善换流变压器阀侧套管设计工艺、提升其运行可靠性具有重要意义。文中依据换流变压器套管实际结构构建了套管温度场分布仿真计算模型,对不同谐波含量及谐波频率下的套管温升情况进行仿真研究 ...
高雨婷 +4 more
doaj
[Magnetic one-step purification-high performance liquid chromatography-triple quadrupole/composite linear ion trap mass spectrometry for the determination of 54 veterinary drug residues in carp]. [PDF]
Wen YP +6 more
europepmc +1 more source
高压直流换流阀饱和电抗器在工作过程中发热量大、电场分布不均匀,使其成为阀厅的安全隐患。为改善饱和电抗器的温升效应,文中以实际±500 kV直流换流阀用饱和电抗器为研究对象,建立了改进的流体场与温度场耦合模型,该仿真模型综合考虑流体传热、空气对流散热、绕组焦耳热和铁心涡流热损耗等实际因素,仿真计算电抗器各部件的温度场分布及其影响因素。现场验证表明该模型计算结果更接近实际工作状况。还建立静电场仿真模型,仿真计算电场畸变情况。温度场结果表明:饱和电抗器的铁心温度最高、环氧树脂次之、冷却水管路温度最低 ...
毛颖科 +5 more
doaj
电磁斥力效率的优化研究,以往研究主要针对斥力盘、线圈等关键零件的结构优化和参数匹配,以及预充电电容的电压和容值的优化分析,很少有关于开关辅助支撑结构件对效率影响的分析研究。不同结构形式和材质的辅助支撑结构件对斥力盘效率有着不可忽视的影响。文中以快速开关支撑板作为分析研究对象,在不改变样机结构形式的前提下,提出了通过设计导磁板,对支撑板开槽等方式,降低支撑板的涡流损耗,提高电磁斥力效率。文章最后,基于仿真结果,对一款110 kV双断口快速开关样机进行了改造设计。试验结果表明,在容值不变情况下 ...
和帅 +5 more
doaj
[Research on portable airway impedance monitoring device based on expiratory oscillation]. [PDF]
Kuang Y, Che B, Li X, Liu L, Deng L.
europepmc +1 more source

