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Method of building transformer acoustic diagnosis database based on multi physical field coupling modeling [PDF]

open access: yesE3S Web of Conferences, 2021
In this paper, a method of building dynamic acoustic diagnosis database of dry-type transformer is proposed. The method is mainly combined with collecting the basic noise of transformer and simulating the acoustic signals of transformer under different ...
Wu Weidong   +5 more
doaj   +1 more source

Lithium-ion battery# High power battery# High drain battery# Composite separator# Battery design [PDF]

open access: yesعلوم، فناوری و کاربردهای فضایی, 2022
One of the reasons for the increasing popularity of lithium- ion batteries is the improvement of their rate capability and power density. All components of a battery, including the anode, cathode, electrolyte, and separator, can limit the capability of ...
Ashkan Nahvibayani   +3 more
doaj   +1 more source

The Frequency of "Brilliant" and "Genius" in Teaching Evaluations Predicts the Representation of Women and African Americans across Fields. [PDF]

open access: yesPLoS ONE, 2016
Women and African Americans-groups targeted by negative stereotypes about their intellectual abilities-may be underrepresented in careers that prize brilliance and genius.
Daniel Storage   +3 more
doaj   +1 more source

Solution-mining-under-nitrogen technology for salt-cavern gas storage and field test

open access: yesYou-qi chuyun, 2021
Since the salt cavern gas storage was constructed in China, diesel blanket has always been used to control the cavern shape, which is costly and polluting. Therefore, nitrogen blanket is proposed for the leaching of cavern.
Jianfu WANG   +7 more
doaj   +1 more source

Study on the Fatigue Failure Law of Gas Storage Caprock Under Periodic Injection and Production [PDF]

open access: yesE3S Web of Conferences, 2021
Whether qualitative or quantitative, whether macroscopic or microscopic, Predecessors' research on the sealing ability of caprocks is concentrated on the static model of the caprock.
Lingyan Liu, Wenman Mu, Yujia Zhai
doaj   +1 more source

Calcium-tin alloys as anodes for rechargeable non-aqueous calcium-ion batteries at room temperature

open access: yesNature Communications, 2022
The key challenge for rechargeable Ca batteries originates from the severe passivation of the calcium metal anode in electrolyte solutions. Here, the authors demonstrate the feasibility and elucidate the electrochemical properties of calcium-tin (Ca–Sn ...
Zhirong Zhao-Karger   +5 more
doaj   +1 more source

Production of a monolithic fuel cell stack with high power density

open access: yesNature Communications, 2022
The transportation sector is gradually evolving to become independent of fossil fuels. Here, the authors report a metal-based monolithic solid oxide fuel cell with a power density of 5.6 kW/L suitable for transport applications.
Stéven Pirou   +19 more
doaj   +1 more source

Surface Modification of Copper Current Collector to Improve the Mechanical and Electrochemical Properties of Graphite Anode in Lithium-Ion Battery [PDF]

open access: yesJournal of Renewable Energy and Environment, 2022
A mechanical technique was applied to the copper current collector of lithium-ion battery anode to improve interface adhesion between Cu foil and anode film.
Mohsen Babaiee   +3 more
doaj   +1 more source

Extreme fast charging of commercial Li-ion batteries via combined thermal switching and self-heating approaches

open access: yesNature Communications, 2023
The mass adoption of electric vehicles is hindered by the inadequate extreme fast charging (XFC) performance (i.e., less than 15 min charging time to reach 80% state of charge) of commercial high-specific-energy (i.e., >200 Wh/kg) lithium-ion batteries ...
Yuqiang Zeng   +12 more
doaj   +1 more source

Bias sputtering of granular L10-FePt films with hexagonal boron nitride grain boundaries

open access: yesScientific Reports, 2023
In this paper, we present an experimental study of L10-FePt granular films with crystalline boron nitride (BN) grain boundary materials for heat assisted magnetic recording (HAMR). It is found that application of a RF substrate bias (V DC = -15 V) yields
Chengchao Xu   +3 more
doaj   +1 more source

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