Results 181 to 190 of about 5,206 (199)

Pediatric migraine is characterized by traits of ecological and metabolic dysbiosis and inflammation. [PDF]

J Headache Pain
Papetti L, Del Chierico F, Frattale I, Toto F, Scanu M, Mortera SL, Rapisarda F, Di Michele M, Monte G, Ursitti F, Sforza G, Putignani L, Valeriani M.   +12 more
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Discrete Wavelet Transform for Improving the Accuracy of an Unbalance Current Protection Relay Due to Transient Fault and Inrush Current Signals

2019 IEEE/IAS 55th Industrial and Commercial Power Systems Technical Conference (I&CPS), 2019
An unbalance current protection relay (60C, 51NC) cannot operate fast enough to avoid catastrophic failure against high system fault currents within capacitor units because traditional unbalance current protection relays are not capable of distinguishing and classifying transient fault current and switching inrush current.
Theerasak Patcharoen, Atthapol Ngaopitakkul   +1 more
openaire   +1 more source

Applying unbalance detection relays with motor loads

IEEE Transactions on Industry Applications, 1999
Prolonged operation under moderate to severe unbalanced supply conditions is well known to cause undesirable heating in motors. Occasionally, users are surprised that the protective relays intended to detect voltage unbalance will fail to respond. This paper reviews the definitions, calculation methods and standards of supply unbalance and compares the
openaire   +1 more source

Voltage unbalance protection VT and relay errors effect on unbalanced voltage detection; considerations for system relaying, stability and developments

11th IET International Conference on Developments in Power Systems Protection (DPSP 2012), 2012
In a power system network, an unbalanced voltage condition can occur due to various reasons. Excessive voltage unbalance has become an issue of concern in power quality at network level, leading to numerous problems. This calls for a stringent management of unbalanced.
openaire   +1 more source

Selective electrochemical synthesis of urea from nitrate and CO2 via relay catalysis on hybrid catalysts

Nature Catalysis, 2023
Ivan Grigioni, Bilu Liu, Jennifer B Dunn
exaly  

Alloying of Cu with Ru Enabling the Relay Catalysis for Reduction of Nitrate to Ammonia

Advanced Materials, 2023
Wensheng Gao, Can Li
exaly  

Ultralow overpotential nitrate reduction to ammonia via a three-step relay mechanism

Nature Catalysis, 2023
Shu-He Han, Hongjiao Li
exaly  

Alkene 1,1-difunctionalizations via organometallic-radical relay

Nature Catalysis, 2023
Yuqiang Li, Guoyin Yin
exaly  

Efficient and selective electrochemical reduction of nitrate to N2 by relay catalytic effects of Fe-Ni bimetallic sites on MOF-derived structure

Applied Catalysis B: Environmental, 2022
Honghan Fei
exaly  

Snapshot photoacoustic topography through an ergodic relay for high-throughput imaging of optical absorption

Nature Photonics, 2020
Lei Li, Liren Zhu, Konstantin I Maslov
exaly