Results 21 to 30 of about 615,383 (291)

Analysis of the Extremely Low Frequency Magnetic Field Emission from Laptop Computers

open access: yesMetrology and Measurement Systems, 2016
This study addresses the problem of magnetic field emission produced by the laptop computers. Although, the magnetic field is spread over the entire frequency spectrum, the most dangerous part of it to the laptop users is the frequency range from 50 to ...
Brodić Darko
doaj   +1 more source

Analysis for magnetic field disturbance of modular multilevel converter based high voltage direct current (MMC‐HVDC) converter valve

open access: yesHigh Voltage, 2023
The standardised design and operational reliability enhancement of the flexible DC converter valve are impending with the construction of high shares of renewables and power electronics power system.
Lei Qi   +5 more
doaj   +1 more source

On the origin of the 1/f spectrum in the solar wind magnetic field [PDF]

open access: yes, 2012
We present a mechanism for the formation of the low frequency 1/f magnetic spectrum based on numerical solutions of a shell reduced-MHD model of the turbulent dynamics inside the sub-Alfv\'enic solar wind.
Bruno   +9 more
core   +3 more sources

Transverse quasilinear relaxation in inhomogeneous magnetic field [PDF]

open access: yes, 1998
Transverse quasilinear relaxation of the cyclotron-Cherenkov instability in the inhomogeneous magnetic field of pulsar magnetospheres is considered. We find quasilinear states in which the kinetic cyclotron-Cherenkov instability of a beam propagating ...
A. Z. Kazbegi   +9 more
core   +2 more sources

Geomagnetically Induced Currents and Harmonic Distortion: High Time Resolution Case Studies

open access: yesSpace Weather, 2020
High time resolution (1–5 s) magnetometer, geomagnetically induced current (GIC), and mains harmonic distortion data from the Halfway Bush substation in Dunedin, New Zealand, are analyzed.
Mark A. Clilverd   +6 more
doaj   +1 more source

A frequency-adjustable electromagnet for hyperthermia measurements on magnetic nanoparticles

open access: yes, 2008
We describe a low-cost and simple setup for hyperthermia measurements on colloidal solutions of magnetic nanoparticles (ferrofluids) with a frequency-adjustable magnetic field in the range 5-500 kHz produced by an electromagnet. By optimizing the general
Hergt   +5 more
core   +3 more sources

The magnetic field near power lines in the Moscow region: the results of measurements and their analyze [PDF]

open access: yesСаратовский научно-медицинский журнал, 2014
The aim: to analyze the real power frequency magnetic field (50 Hz) values near power lines. The material. Long-term measurements of the power frequency magnetic field (50 Hz) near power lines of 110 kV, 220 kVand 500 kVin the Moscow region.
Prokofyeva A.S., Grigoriev O.A.
doaj  

PFMD: A Power Frequency Magnetic Anomaly Signal Detection Scheme Based on Synchrosqueezed Wavelet Transform

open access: yesApplied Sciences, 2022
Magnetic anomaly signal detection (MASD) is a passive method for the detection of visually obscured ferromagnetic objects. This paper proposes a new method for MASD based on the ambient field of power frequency magnetic (power transmission line system ...
Bin Tian   +5 more
doaj   +1 more source

Effect of magnetic field on the phase transition in a dusty plasma

open access: yes, 2017
The formation of self-consistent crystalline structure is a well-known phenomenon in complex plasmas. In most experiments the pressure and rf power are the main controlling parameters in determining the phase of the system.
E. Thomas   +7 more
core   +1 more source

Tunability of Superconducting Metamaterials

open access: yes, 2006
Metamaterials are artificial structures with unique electromagnetic properties, such as relative dielectric permittivity and magnetic permeability with values less than 1, or even negative.
Anlage, Steven M.   +5 more
core   +1 more source

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