[Determination of 17 bisphenol compounds in human urine by solid supported liquid-liquid extraction-ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]
Se PuJin Y +6 more
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Psychological experiences of young end stage renal disease patients awaiting kidney transplantation: A qualitative study. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanLiu D +5 more
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[Progress in sample pretreatment and detection methods of hexabromocyclododecanes]. [PDF]
Se Pu, 2022 Cheng J, Ma J, Li S, Tian Y.
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Gaoya dianqi, 1979 高压开关柜内部发生电弧短路时,电弧持续燃烧放出的能量可能造成严重破坏,本文综述了开关柜(特别是封闭式开关柜)内发生电弧短路时承受的电动力及其运动规律,柜内气压及温度变化等一系列物理过程,并指出能限制其破坏范围的措施。
doaj
[Tracing the origin of crude oil based on fingerprint profiles obtained by comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry]. [PDF]
Se PuZhang WY +7 more
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[Monitoring of atmospheric CH4, CO, CO2, N2O and SF6 using three-channel gas chromatography]. [PDF]
Se Pu, 2022 Hong H +9 more
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Dianci bileiqi, 1990 瞬态过程时的过电压可以引起电动机线圈绝缘的损坏,在直接靠近线圈处装设金属氧化物避雷器,在瞬态过程时,由于阀片有时延,不大有效。此时残压值可能增大到1.5倍起始动作电压值。当火花间隙放电时高频分量足以增大到过电压水平。避雷器从端子箱中取出（根据热稳定的理由）并经过附加电缆接入就会增高过电压每米电缆1kV。将小电容量电容器接入线圈就要求增加安装面积。RC回路降低过电压50％,但不是在所有型式的瞬态过程时都是这样。当无重燃的真空开关时在离线圈很远处装设大电容量的电容器,但是这些电容器不能保证瞬态过程时的保护,
doaj
[Research advances on influencing factors and intervention strategies of pediatric burns]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi, 2022 Hu J, Li L, Chen W.
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Gaoya dianqi双断口真空断路器能够有效提高耐受电压水平，显著降低重燃率，进而提升无功投切性能，具有重要的工程实际意义。文中通过实验分别研究了双断口真空断路器在直流电压下不并联均压电容以及并联均压电容条件下关合时的预击穿特性，包括预击穿开距及其分散性、预击穿电压、预击穿场强，并计算其威布尔分布。结果表明，通过并联合理大小的均压电容（约100 pF）可以使双断口分压更加均匀，从而有效改善双断口真空断路器的预击穿特性。实验结果表明，随着均压电容的增大，当均压电容值超过500 pF后，双断口真空断路器的预击穿特性将会变差 ...
李洪伟 +4 more
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[Two-dimensional chiral metal-organic-framework nanosheets based on Co-BDC-NH<sub>2</sub> used as stationary phases for gas chromatography]. [PDF]
Se PuYang MF +6 more
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