Results 11 to 20 of about 203,934 (147)
World War I photograph by duVal Allen, 1917-1919
, 1917 Photograph of two unidentified men in uniform, from duVal Allen's service during World War I, approximately 1917-1919.duVal Allen was a member of the Norwich University Class of 1919; he left school to serve as a volunteer ambulance driver in World War I.
Allen, duVal, 1896-1981
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A Thirty-Year Gap: Reviving All-Nitride Glasses as Processable, High-Performance Materials. [PDF]
Adv Sci (Weinh)Oxygen‐free all‐nitride glasses are revisited in light of new avenues of synthesis, raw material availability, and applications. A semi‐empirical analysis predicts mechanical performance achieving the level of engineering ceramics while maintaining visual transparency, and significant potential regarding optical properties into the infrared spectral ...
Duval A, Grande T, Wondraczek L.
europepmc +2 more sources
Gas Production by Monoester of Saturated Fatty Acids under Electrical Fault
Jurnal Nasional Teknik Elektro, 2022 This paper deals with the gas production by monoester oil intended to be used as insulating oil under an electrical discharge of low energy. The monoester contains only saturated fatty acids in its hydrocarbon chain. The electrical fault was realized by
Abdul Rajab +3 more
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Diagnostic Simplexes for Dissolved-Gas Analysis
Energies, 2020 A Duval triangle is a diagram used for fault type identification in dissolved-gas analysis of oil-filled high-voltage transformers and other electrical apparatus.
James Dukarm +2 more
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Investigation on gas generation characteristics in transformer oil under vibration
IET Generation, Transmission & Distribution, 2022 Operating experience has shown that characteristic gases can be found in oil‐immersed power transformers and high‐voltage reactors under strong vibration without discharge or thermal faults occurring.
Chong Guo +5 more
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, 2023 Minyak isolasi merupakan bagian terpenting sebuah transformator yang fungsinya sebagai isolator dan sebagai pendingin. Pada penelitian ini dilakukan analisis minyak isolasi transformator atau analisis gas terlarut (DGA) dengan menggunakan alat ...
Ika, Novia Anggraini +2 more
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Effective Behavior Change Techniques for Successful Weight Loss and Weight Loss Maintenance Among Adults With Overweight and Obesity: A Systematic Review and Meta-Analysis. [PDF]
Obes RevABSTRACT Achieving and maintaining weight loss are challenging and require sustained lifestyle changes. This study examined which behavior change techniques (BCTs) support long‐term weight outcomes among adults with overweight or obesity. We synthesized evidence from randomized controlled trials of behavioral interventions versus control or alternative
Preuhs K +4 more
europepmc +2 more sources
Energies, 2020 This research focuses on problem identification due to faults in power transformers during operation by using dissolved gas analysis such as key gas, IEC ratio, Duval triangle techniques, and fuzzy logic approaches.
Nitchamon Poonnoy +2 more
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Analysis of 11kV/ 430 V 500 kVA Transformer Dissolved Gas using Pre-processing Techniques through Duval’s Triangle [PDF]
Indian Journal of Science and Technology, 2021 Abstract Objectives: Analysis of dissolved gas in transformer oil is very important because the fluctuations in the oil will change the process of content of dissolved gases which will show effect on many factors such as oil temperature and external environment. Hence, it is important to propose a preprocessing technique through Duval’s triangle which
G V S S N Srirama Sarma +3 more
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IOT based classification of transformer faults using emerging techniques of E-nose and ANFIS
Frontiers in Energy Research, 2022 E-Nose finds its use in a wide range of applications such as quality assessment in food processing to toxic gas identification in chemical industry either in the offline or online mode.
Md. Danish Equbal +6 more
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