Results 11 to 20 of about 452,637 (291)
Low frequency oscillations reflect neurovascular coupling and disappear after cerebral death [PDF]
Scientific ReportsSpectrum power analysis in the low frequency oscillations (LFO) region of functional near infrared spectroscopy (fNIRS) is a promising method to deliver information about brain activation and therefore might be used for prognostication in patients with ...
Sven Schulthess +6 more
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Zhejiang dianli, 2023 Low frequency oscillations in power system with medium-pressure regulating valve of steam turbine occur from time to time， threatening the safe operation of generating units and power system.
ZHANG Bao +5 more
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Frontiers in Computational Neuroscience, 2023 IntroductionSpontaneous low-frequency oscillations play a key role in brain activity. However, the underlying mechanism and origin of low-frequency oscillations remain under debate.MethodsOptical imaging and an electrophysiological recording system were ...
Ming Li +6 more
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Mathematics, 2023 This study aims to develop and test a new accelerated method for analyzing low-frequency oscillations in power systems using phasor measurements. The proposed method is based on the use of mathematical statistics methods that do not require significant ...
Mihail Senyuk +4 more
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Low-frequency quantum oscillations from interactions in layered metals
Physical Review Research, 2021 Metals composed of weakly coupled, stacked layers possess a Fermi surface that slightly varies in size along the stacking direction. This appears in de Haas–van Alphen (dHvA) oscillations of the magnetization with a magnetic field as two close ...
Andrew A. Allocca, Nigel R. Cooper
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Mutual relationship of oscillations in the frequency range 3.6 mHz to 22 mHz in the solar chromosphere [PDF]
Serbian Astronomical Journal, 2006 High frequency acoustic oscillations were suggested as the source of mechanical heating in the chromosphere. In this work the radial component of the oscillations in the frequency interval 3 mHz to 22 mHz are investigated. The observations were performed
Anđić A.
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Strategy for grid low-frequency oscillation suppression via VSC-HVDC linked wind farms
Energy Reports, 2022 The effective suppression of low-frequency grid oscillations by the offshore wind power in a voltage source converter-based HVDC (VSC-HVDC) output system can enhance the operational stability of the overall power system.
Aobo Chen +5 more
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A Low-Frequency Oscillator [PDF]
Review of Scientific Instruments, 1953 A low-frequency simple-harmonic oscillator, employing a relatively new method of approach, is described. An electronic analog computer of the differential analyzer type is used to solve the differential equation of a mass-spring system. Three dc operational amplifiers perform the computation and a sinusoidal output is obtained as the solution of the ...
Howe, Robert Milton +1 more
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Low-frequency oscillations analysis and big data [PDF]
E3S Web of ConferencesThe increased observability of processes in electric power systems, provided by the widespread introduction of synchrophasor measurement technology, as well as the use of computational processing of measurement data arrays, has led to changes in the ...
Popov Aleksandr +2 more
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