Results 51 to 60 of about 6,433 (219)

Multi‐Responsive Bowl‐Shaped Janus Nanomotors Based on Polyitaconic acid/Polypyrrole on the Surface of Iron Oxide Nanoparticles with Chemical, Electrical, and Magnetic Field Actuation for Targeted Drug Delivery Applications

Advanced NanoBiomed Research, EarlyView.
Bowl‐shaped Janus nanomotors with platinum, iron oxide, and polypyrrole integrate catalytic, magnetic, and electric propulsion for targeted drug delivery. They demonstrate controlled, directional motion under varying pH and hydrogen peroxide conditions, with optimal performance in neutral media.
Kimia Tavakoli Dehaghi, Sepideh Khoee, Shima Tavakoli, Oommen P. Varghese   +3 more
wiley   +1 more source

The assessment method of transformer oil-paper insulation state based on PSO-ELM

电力工程技术
Oil-immersed power transformer is an important part of power grid, and its reliable operation plays a vital role in pomler system security. Aiming at the problem that the insulation state of transformer cannot be assessed quantitatively after long-term ...
ZHANG Dewen, ZHANG Jian, QU Limin, WU Dixing, LIU Heqian, ZHANG Mingze   +5 more
doaj   +1 more source

Application of molecular simulation in transformer oil–paper insulation

The Journal of Engineering, 2019
Molecular simulation technology is a new technology emerging with the rapid development of computer technology. It has the advantages of clear microscopic models, in-depth and precise calculation etc., it has been widely used in the oil–paper insulation ...
Xia Xiao, Wenyan Yang, Linduo Li, Tingting Zhong, Xiaolin Zhang   +4 more
doaj   +1 more source

Streamline and Isotherm Visual Analysis of Darcy–Forchheimer von Karman Spinning Flow of Maxwell Fluid Over a Stretching Disk With Quadratic Temperature‐Dependent Heat Source

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This research paper provides an extensive study of the effects of Darcy–Forchheimer von‐Karman spinning flow of Maxwell fluid across a stretching disk including the effect of heat generation based on a nonlinear function of temperature. The flow system is influenced by thermal radiations and Arrhenius activation energy.
Ebrahem A. Algehyne, Mounirah Areshi, Fahad Maqbul Alamrani, Zehba Raizah, Mustafa Bayram, Jihad Younis, Anwar Saeed   +6 more
wiley   +1 more source

Advancing thermal stability in natural ester oil-paper insulation systems via precision nanostructuring with parylene films: Experimental and molecular-level comprehensive assessment

Polymer Testing
The oil-paper insulation system in eco-friendly fire-retardant transformers depends on hydrophilic natural ester insulating oil. Moisture within the system synergistically interacts with aging, worsening oil-paper insulation degradation and hastening ...
Feipeng Wang, Jian Zhou, Linyang Dan, Yihua Qian, Shi Li, Issouf Fofana, Massimo Pompili, Jian Li   +7 more
doaj   +1 more source

FLUORESCENT PROPERTIES OF PAPER INSULATION OF OIL-FILLED TRANSFORMERS

Известия высших учебных заведений: Проблемы энергетики, 2019
The effect of paper thermal destruction on its luminescence spectra and luminescence excitation spectra in the spectral ranges of 400-550 nm and 250-450 nm, respectively, was studied.
V. K. Kozlov, M. Sh. Garifullin, A. Kh. Sabitov, R A. Giniatullin   +3 more
doaj   +1 more source

Thermal Black‐Infused Polyurethane Rigid Foams: Novel Formulations Toward Higher‐Performance and More Sustainable Insulation

Journal of Applied Polymer Science, EarlyView.
Thermal black improves polyurethane foam structure and stability. It helps the foam rise smoothly while promoting the formation of smaller, more uniform cells. The foam keeps its strength and insulation performance while reducing shrinkage. Its clean production and easy processing make it a sustainable, cost‐effective option for high‐performance ...
Mihaela Mihai, Adrien Faye, Sajjad Saeidlou, Edward Norton   +3 more
wiley   +1 more source

Takeover Vulnerability and the Discipline of ESG Overinvestment

Business Strategy and the Environment, EarlyView.
ABSTRACT While takeovers serve a disciplinary role by replacing inefficient managers, the threat of takeovers may compel firms to divert attention from Environmental, Social and Governance (ESG) efforts as a strategic response to external pressure, especially when such firms are already overinvesting in ESG.
Abongeh Tunyi, Ruth O. Sagay, Reon Matemane   +2 more
wiley   +1 more source

Dynamic Spillovers Between FinTech, Blockchain, and Green Finance: A Quantile Connectedness Approach

Business Strategy and the Environment, EarlyView.
ABSTRACT This paper explores how financial innovation and environmental sustainability intersect by analyzing spillovers between FinTech, blockchain energy use, and green finance. Using a Quantile Vector Autoregression (QVAR) framework, we examine weekly data from 2018 to 2024 across 11 digital, environmental, and macro‐financial indices.
Mehmet Sahiner, Sisi Sung, James Devlin
wiley   +1 more source

Impact of time parameters of lightning impulse on the breakdown characteristics of oil paper insulation

High Voltage, 2016
At present, the insulation performances of electrical apparatus under lightning impulse voltages are always evaluated by the withstand test of standard lightning impulse voltage (1.2/50 µs), which is recommended by IEC Standard.
Wenxia Sima, Potao Sun, Ming Yang, Jingyu Wu, Jiefang Hua   +4 more
doaj   +1 more source