Results 71 to 80 of about 51,560 (304)

All‐Aqueous Pullulan Fibers Enabling Visible‐to‐Near‐Infrared Waveguiding with Mechanical and Thermal Resilience

Advanced Functional Materials, EarlyView.
Pullulan, a biomass‐derived polysaccharide, is transformed into transparent optical fibers using a solvent‐free borax hydrogel‐spinning method. The fibers outperform PMMA with ≈200 MPa tensile strength and 200 °C stability, while uniquely guiding visible‐to‐NIR light and enabling additive‐free humidity sensing.
Yuya Fukata, Aayush Kumar Jaiswal, Ari Hokkanen, Hannes Orelma, Tadahisa Iwata   +4 more
wiley   +1 more source

Online Monitoring Method for Opening and Closing Time of 10 kV Spring Energy Storage Circuit Breaker Based on Transient Electrical Signal Characteristic Point Marking and Self-Calibration

Energies
Among all circuit breaker faults, mechanical failures account for a considerable proportion, and online monitoring of their mechanical characteristics is of great practical significance.
Liting Weng, Jiangtao Xiao, Zhaochuang Zhang, Jingang Wang, Yuchuan Wen, Fan Zhang, Xingyu Zhang, Lingyi Ma, Pengcheng Zhao   +8 more
doaj   +1 more source

Investigation of Transient Recovery Voltage on Circuit Breaker [PDF]

, 2018
For technically adequate interruptive performance, circuit breaker (CB) must be able to sufficiently interrupt current and voltage transients in power system network.
Abdullh, Omar, Awogbemi, Bidemi
core  

Cascaded commutation circuit for a hybrid DC breaker with dynamic control on fault current and DC breaker voltage [PDF]

, 2017
This paper proposed a cascaded commutation circuit based on current commutation approach for low-to-medium voltage DC fault current interruption, without snubber circuits, which slows the fault current di/dt prior to current-zero and the rate of rise of ...
Ding, Xiao, Finney, Stephen J., Guang, Weixiao, Holliday, Derrick, Lim, Tee C., Shan, Yunhai, Williams, Barry W.   +6 more
core   +1 more source

Heteroatom‐Engineering Promoted Co9S8 Bi‐functional Electrocatalyst for Hydrazine‐Assisted Hydrogen Production at Industrial Current Density

Advanced Functional Materials, EarlyView.
Fe and P co‐doped Co9S8 nanocorals (Fe, P‐Co9S8) are successfully synthesized by a heteroatom engineering strategy, which exhibit outstanding bifunctional electrocatalytic performance for both the hydrogen evolution reaction (HER) and hydrazine oxidation reaction (HzOR).
Yuying Meng, Chunyan Xiang, Wenbiao Zhang, Dahai Zeng, Bing Du, Bao Zhong, Yue Jiang, Damien Voiry, Qingsheng Gao   +8 more
wiley   +1 more source

Fault Analysis and Solution of Main Circuit Breaker Abnormal Disconnection of HX_D3C Locomotive

机车电传动, 2020
During the operation of HXD3C locomotive, there have been many consecutive problems of unexplained locomotive main circuit breaker opening, which seriously affects the normal operation of the locomotive.
Liang HAO, Xinyue ZHANG
doaj  

Policy Effectiveness Analysis of China’s Circuit Breaker Mechanism

Complexity, 2020
From June to August 2015, China’s security market suffered a severe decline due to the impact of the stock market crash. For this reason, the Shanghai Stock Exchange issued a notice on December 4, 2015, deciding to implement the circuit breaker mechanism
Wei Zhou, Wanying Rao, Danxue Luo
doaj   +1 more source

Determination of failure degree of 1.2 kV SiC MOSFETs after short-circuit test using an improved test setup

Nanotechnology and Precision Engineering, 2020
Analysis of the short-circuit characteristics of SiC metal-oxide-semiconductor field-effect transistors (MOSFETs) is very important for their practical application.
Shen Diao, Jun Sun, Ziwei Zhou, Zhenzhong Zhang, Adolf Schöner, Zedong Zheng, Weiwei He   +6 more
doaj   +1 more source

Pengaruh Masuknya Penambahan Pembangkit Baru Kedalam Jaringan 150 KV pada Kapasitas Circuit Breaker [PDF]

, 2017
This study aimed to obtain the appropriate capacity circuit breaker on the electric power system of Riau using bus impedance matrix method in determining the flow of short circuit in the electric power system of Riau.
\u27, E. (Emelia), Sukma, D. Y. (Dian)
core  

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

Advanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky, Tuo Zhao, Glaucio H. Paulino, Emily C. Davidson   +3 more
wiley   +1 more source