Results 71 to 80 of about 441,873 (190)

Discussion of Auxiliary Power Source Open-Phase Protection in Nuclear Power Plant

南方能源建设
[Objective] The auxiliary power source in nuclear power plant operates at no-load normally, the protection cannot alarm when it occurs single phase open, but this open-phase condition will threaten the nuclear safety seriously, it should assemble special
Shunhua WU, Houjun QIAN, Tianwei WANG, Yupeng SUN, Jiangang CHEN, Chuanyang CAO, Jianfeng DONG, Zhenhua ZHAO   +7 more
doaj   +1 more source

Field-free deterministic ultra fast creation of skyrmions by spin orbit torques

, 2017
Magnetic skyrmions are currently the most promising option to realize current-driven magnetic shift registers. A variety of concepts to create skyrmions were proposed and demonstrated. However, none of the reported experiments show controlled creation of
A Brataas, A Fert, A Hrabec, A Rosch, A Vansteenkiste, Bastian Pfau, Benjamin Krüger, C Moreau-Luchaire, Christian M. Günther, Dieter Engel, F Büttner, F Hellman, Felix Büttner, Geoffrey S. D. Beach, Ivan Lemesh, J Iwasaki, J Sampaio, J Sinova, Jan Geilhufe, Jens Viefhaus, K Garello, K Litzius, K-F Huang, K-S Lee, L Liu, Lucas Caretta, M Schott, Michael Schneider, N Nagaosa, N Romming, Piet Hessing, S Eisebitt, S Rohart, S Woo, SSP Parkin, Stefan Eisebitt, W Jiang, W Jiang, W Koshibae, W Legrand, X Yu, Y Zhou   +41 more
core   +2 more sources

Injection of a single electron from static to moving quantum dots [PDF]

, 2016
We study the injection mechanism of a single electron from a static quantum dot into a moving quantum dot created in a long depleted channel with surface acoustic waves (SAWs). We demonstrate that such a process is characterized by an activation law with
Bertrand, Benoit, Bäuerle, Christopher, Hermelin, Sylvain, Ludwig, Arne, Meunier, Tristan, Mortemousque, Pierre-André, Takada, Shintaro, Tarucha, Seigo, Wieck, Andreas D., Yamamoto, Michihisa   +9 more
core   +2 more sources

Comparison between gadolinium-enhanced 2D T1-weighted gradient-echo and spin-echo sequences in the detection of active multiple sclerosis lesions on 3.0T MRI [PDF]

, 2017
Objectives To compare the sensitivity of enhancing multiple sclerosis (MS) lesions in gadolinium-enhanced 2D T1-weighted gradient-echo (GRE) and spin-echo (SE) sequences, and to assess the influence of visual conspicuity and laterality on detection of
Alcaide, Paula, Auger, Cristina, Aymerich Martínez, Francisco Javier, Corral Gámez, Juan Francisco, Huerga, Elena, Mitjana, Raquel, Montalban, Xavier, Pareto Onghena, Deborah, Rovira, Alex, Sastre Garriga, Jaume   +9 more
core   +2 more sources

Characteristics of temporal fluctuations in the hyperpolarized state of the cortical slow oscillation [PDF]

, 2008
We present evidence for the hypothesis that transitions between the low- and high-firing states of the cortical slow oscillation correspond to neuronal phase transitions. By analyzing intracellular recordings of the membrane potential during the cortical
Barry, Melissa, Hutchison, E.J.W., Reynolds, John N.J., Steyn-Ross, D. Alistair, Wilson, Marcus T.   +4 more
core   +2 more sources

Homologous Helical Jets: Observations by IRIS, SDO and Hinode and Magnetic Modeling with Data-Driven Simulations

, 2015
We report on observations of recurrent jets by instruments onboard the Interface Region Imaging Spectrograph (IRIS), Solar Dynamics Observatory (SDO) and Hinode spacecrafts.
Boerner, P., Carlsson, M., Cheung, Mark C. M., De Pontieu, B., Fu, Y., Golub, L., Hansteen, V., Hurlburt, N., Jaeggli, S., Kankelborg, C., Kleint, L., Lemen, J., Martinez-Sykora, J., McKillop, S., Reeves, K. K., Saar, S., Tarbell, T. D., Testa, P., Tian, H., Title, A. M., Wuelser, J. P.   +20 more
core   +1 more source

Modeling of grid-connected converter-based sources as equivalent impedances for symmetrical and asymmetrical short-circuit calculation

Revista Principia, 2020
The study of electrical systems under fault conditions provides fundamental information for proper system protection design and coordination. These studies are traditionally performed in the phasor domain and based on the physical behavior of the ...
Herick Talles Queiroz Lemos, Adriano Aron Freitas Moura, Antônio Marcos Fernandes Filho, Ednardo Pereira Rocha, Ailson Pereira Moura   +4 more
doaj   +1 more source

Dependability Analysis of the Negative-Sequence Turn-to-Turn Fault Protection Schemes for MMC-HVDC Converter Transformers

International Journal of Electrical Power & Energy Systems
This paper addresses two complex areas of research: the detection of turn-to-turn faults (TTF) in power transformers and the impact of inverter-based resources on the TTF protection scheme operation. Detecting turn-to-turn faults in power transformers by
Frank Mieske, Krzysztof Solak, Waldemar Rebizant   +2 more
doaj   +1 more source

Negative sequence current injection by power electronics based generators and its impact on faulted phase selection algorithms of distance protection

Western Protective Relaying Conference (WPRC), 2018
Abstract—Continuously increasing connection of Renewable Generators using Power Electronics (PE) in transmission and distribution levels has raised the interest of utilities to assess the impact of these devices on the protection systems currently installed in substations.
López, David, Andrino, Ruben, Martínez, Eduardo, Pindado, Lucía, Borroy, Samuel, Villén, Maite, Popov, Marjan, Ordúñez, Miguel Ángel, Vaquero, Jorge, Grasset, Henri   +9 more
openaire   +1 more source

Measurement of the muon anomaly to high and even higher precision

, 2005
Our recent series of measurements at Brookhaven National Laboratory determined the muon anomalous magnetic moment \amu to a precision of 0.5 ppm. The final result--representing the average of five running periods using both positive and negative muons ...
Aloisio, Bailey, Bennett, Bennett, Bennett, Bijnens, Blokland, Brown, Brown, Carey, Danby, David W. Hertzog, Davier, Davier, Efstathiadis, Fei, Hagiwara, Hayakawa, Hertzog, Kinoshita, Kinoshita, Knecht, Knecht, Krienen, Liu, Melnikov, Prigl, Sedykh, Semertzidis, Yamamoto   +29 more
core   +2 more sources