Results 51 to 60 of about 9,614 (304)

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

The impact of COVID-19 pandemic on the health-seeking behaviour of an Asian population with acute respiratory infections in a densely populated community

BMC Public Health, 2021
Background The COVID-19 pandemic led to the implementation of various non-pharmaceutical interventions (NPI) as the Singapore government escalated containment efforts from DORSCON Orange to Circuit Breaker.
Hwee Mian Jane Tan, Mui Suan Tan, Zi Ying Chang, Kee Tung Tan, Guan Liang Adrian Ee, Chee Chin David Ng, Ying Khee William Hwang, Yi Ling Eileen Koh, Yan Ping Sarah Low, Ngiap Chuan Tan   +9 more
doaj   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

Mechanism Analysis and Simulation Study of Closing Overvoltage Fault in EMU Circuit Breaker

Chengshi guidao jiaotong yanjiu
Objective The overvoltage caused by circuit breaker closing will aggravate the insulation aging of high voltage equipment when EMU (electric multiple units)passes neutral section.
ZHANG Mingrui, ZHANG Ningchuan, LIU Zhengwei   +2 more
doaj   +1 more source

Design of Remote Open Control Scheme for Fully Automatic Unmanned Subway

机车电传动, 2021
In order to solve the problem that the air circuit breaker cannot be manually reset in fully automatic unmanned subway vehicles, in view of the characteristics of the fully automatic unmanned system, the air circuit breaker matrix monitoring solution and
Yuhang JING, Jianhui HUANG, Shangzhuo SI, Li ZHOU   +3 more
doaj  

Wavelet based analysis of circuit breaker operation [PDF]

, 2004
Circuit breaker is an important interrupting device in power system network. It usually has a lifetime about 20 to 40 years. During breaker's service time, maintenance and inspection are imperative duties to achieve its reliable operation.
Ren, Zhifang Jennifer
core  

DC Circuit Breaker with an Alternating Commutating Circuit

, 2023
The present disclosure provides a DC mechanical circuit breaker that can utilize two switches, one of which can generate zero-crossing with an alternate oscillatory circuit for the other one, which can be a conventional zero-crossing-based AC breaker and
Mehraeen, Shahab, Sen, Sudipta
core  

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source

The Study About Low Voltage Circuit Breaker Mix Method Between IEC Circuit Breaker and Domestic Circuit Breaker [PDF]

The Transactions of The Korean Institute of Electrical Engineers, 2012
Recent WTO/TBT agreement was adopted by the IEC domestic. For this reason, low voltage electrical equipment was many Confusion arises. Low voltage circuit was also one of these. The case of low voltage circuit, existing domestic circuit breakers and circuit breakers IEC curve differs from the behavior of each other. If low voltage circuit breaker wrong
Jin-Soo Jung, Han-Sang Kim, Woon-Ki Han, Sun-Gu Kim, Chan-Eom Park   +4 more
openaire   +1 more source

Determination of protection system requirements for DC UAV electrical power networks for enhanced capability and survivability

, 2011
A growing number of designs of future Unmanned Aerial Vehicle (UAV) applications utilise dc for the primary power distribution method. Such systems typically employ large numbers of power electronic converters as interfaces for novel loads and generators.
Burt, Graeme, S.D.A. Fletcher, Norman, Patrick, Galloway, Stuart, Fletcher, Steven, P.J. Norman, G.M. Burt, S.J. Galloway   +7 more
core   +1 more source