Results 21 to 30 of about 1,020 (264)

Heat transfer comparison of nanofluid filled transformer and traditional oil-immersed transformer

AIP Advances, 2018
Dispersing nanoparticles with high thermal conductivity into transformer oil is an innovative approach to improve the thermal performance of traditional oil-immersed transformers.
Yunpeng Zhang, Siu-lau Ho, Weinong Fu
doaj   +1 more source

Lifespan Estimation of Oil-Immersed Electric Transformer

KAGAKU KOGAKU RONBUNSHU, 2004
油入変圧器の寿命を支配しているのは主として絶縁材料である. なかでも絶縁紙の経年使用に伴う機械的強度の低下は絶縁不良の原因となる. 絶縁紙の劣化機構は巻線の発熱によって高分子であるセルロースの解重合が起こり, 平均重合度が減少して機械的強度が低下し, 巻線の温度変化に伴う変形に追随できなくなると説明されている.本研究では, セルロースの平均重合度の低下機構を重合反応工学の観点から, モノマー間結合の開裂反応と捉え, 変圧器に生ずる損失熱による温度上昇の影響を考慮して, 寿命予測について考察を行い, 変圧器の設備保全の考え方を示した.
ENDO, Toru, NAGAMOTO, Hidetoshi, O'SHIMA, Eiji   +2 more
openaire   +1 more source

Heat and Mass Transfer Simulation of Nano-Modified Oil-Immersed Transformer Based on Multi-Scale

Energies
The fast and accurate calculation of the internal temperature rise in the oil-immersed transformer is the premise to realize the thermal health management and load energy evaluation of the in-service transformer. In view of the influence of nanofluids on
Wenxu Yu, Xiangyu Guan, Liang Xuan
doaj   +1 more source

On the Estimation of Elapsed Life of Oil-Immersed Power Transformers [PDF]

IEEE Transactions on Power Delivery, 2005
Inadvertent failure of power transformers has serious consequences on the system reliability, economics, and the revenue accrual. An accurate estimation of transformer life can, to a very large extent, mitigate the problems, besides satisfying the conflicting requirements of optimum utilization of the equipment and safeguarding the reliability. In this
Pradhan, Manoj Kumar, Ramu, TS
openaire   +2 more sources

Inversion detection method of oil‐immersed transformer abnormal heating state

IET Electric Power Applications, 2023
Transformer overheating faults have an important impact on the transformer safe and stable operation. Taking 10 kV oil‐immersed transformer as the research object, using the indirect coupling analysis method of electromagnetic thermal fluid multi ...
Yongqing Deng, Jiangjun Ruan, Xuzhu Dong, Daochun Huang, Chen Zhang   +4 more
doaj   +1 more source

Analysis of relationship between faults and outer surface temperature of oil-immersed power transformer

Gong-kuang zidonghua, 2017
Different faults of oil-immersed power transformers were classified with three-layer structure of 'parts-fault causes-temperature rising phenomeno' and the fault causes were summarized, impacts of the different faults on outer surface temperature of ...
DENG Shijian, ZHANG Kuan, HU Jipu, LYU Zhongyou, QI Jianshan, WEI Dong   +5 more
doaj   +1 more source

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

FEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa, Akira Hattori, Masafumi Tsujimoto, Toshihide Kobayashi   +3 more
wiley   +1 more source

Dimethyl fumarate combined with cisplatin at subcytotoxic doses sensitizes cervical cancer toward ferroptosis and apoptosis through GSH restriction and p53 (re)activation

Molecular Oncology, EarlyView.
Dimethyl fumarate (DMF) reduces growth of HPV‐positive cervical cancer spheroids and induces ferroptosis in cervical cancer cells via blocking SLC7A11/Glutathione (GSH) axis. Combination of subcytotoxic doses of DMF and cisplatin (CDDP) further suppresses spheroid growth and drives cell death in 2D culture models.
Carolina Punziano, Giuseppina Minopoli, Simona Romano, Laura Marrone, Katia Aquilano, Maria Lina Tornesello, Raffaella Faraonio   +6 more
wiley   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source