Results 51 to 60 of about 24,723,956 (329)

A Novel Fault Diagnosis Method for a Power Transformer Based on Multi-Scale Approximate Entropy and Optimized Convolutional Networks

Entropy
Dissolved gas analysis (DGA) in transformer oil, which analyzes its gas content, is valuable for promptly detecting potential faults in oil-immersed transformers.
Haikun Shang, Zhidong Liu, Yanlei Wei, Shen Zhang   +3 more
doaj   +1 more source

Online Dissolved Gas Analysis (DGA) Monitoring System

CoRR, 2019
Transformers are critical assets in power systems and transformer failures can cause asset damage, customer outages, and safety concerns. Dominion Energy has a sophisticated monitoring process for the transformers. One of the most cost-efficient, convenient and practical transformer monitoring methods in industry is Dissolved Gas Analysis(DGA ...
Xianda Deng, Kyle Thomas, Huiying Huang, Scott P. Adams, Hesen Liu   +4 more
openaire   +2 more sources

Dissolved Gas Analysis for Fault Prediction in Power Transformers Using Machine Learning Techniques

Applied Sciences
Power transformers are one of the most important elements of electrical power systems. The fast diagnosis of transformer faults improves the efficiency of power systems.
sahar R. Al-Sakini, Ghassan A. Bilal, Ahmed T. Sadiq, W. Al-Maliki   +3 more
semanticscholar   +1 more source

Quantifying Groundwater Recharge Dynamics and Unsaturated Zone Processes in Snow‐Dominated Catchments via On‐Site Dissolved Gas Analysis

Water Resources Research, 2021
Snowmelt contributes a significant fraction of groundwater recharge in snow‐dominated regions, making its accurate quantification crucial for sustainable water resources management.
O. Schilling, Achut Parajuli, C. Otis, T. Müller, W. A. Quijano, Y. Tremblay, M. Brennwald, D. Nadeau, S. Jutras, R. Kipfer, R. Therrien   +10 more
semanticscholar   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Determination of transformer performance index based on dissolved gas analysis [PDF]

, 2010
Dissolved Gas Analysis (DGA) is the single most widely used and most effective test to determine transformer’s operation conditions. The detection of gases generated in the transformer is the first available indication of the transformer malfunction ...
Md. Zain, Zainol Alam
core  

Methane Venting in Gas Hydrate Potential Area Offshore of SW Taiwan: Evidence of Gas Analysis of Water Column Samples

Terrestrial, Atmospheric and Oceanic Sciences, 2006
Water column samples were collected systematically in several potential gas hydrate areas offshore of SW Taiwan for analysis of dissolved gases. Some these samples show unusually high dissolved methane concentrations at sites A, B, C, and H of cruise ORI-
Tsanyao Frank Yang, Pei-Chuan Chuang, Saulwood Lin, Ju-Chin Chen, Yunshuen Wang, San-Hsiung Chung   +5 more
doaj   +1 more source

Gas production mechanism of Irgamet 39 and its long‐term corrosion resistance

High Voltage, 2023
The phenomenon of transformer failure caused by oil‐sulphur corrosion of oil₋paper insulation system has always been concerned by scholars. Irgamet 39 is the most used metal passivator for inhibiting sulphur corrosion. However, Irgamet 39 causes abnormal
Huiying Xiang, Yuan Yuan, Guoyong Liu, Xue Gao, Cheng Zhang, Jiang Zhou, Ruijin Liao   +6 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Shale Gas and the EU Internal Gas Market: Beyond the Hype and Hysteria. CEPS Working Document No. 369, September 2012 [PDF]

, 2012
This paper analyses the interplay between shale gas and the EU internal gas market. Drawing on data presented in the 2012 International Energy Agency’s report on unconventional gas and additional scenario analyses performed by the Joint Research Centre ...
Teusch, Jonas
core