Results 21 to 30 of about 191,690 (317)
Effects of radiofrequency electromagnetic field exposure on sleep quality [PDF]
, 2013 The use of wireless communication devices, which emit radiofrequency electromagnetic fields (RF-EMF), has increased in the past decades. According to the World Health Organization (WHO) mobile phone use is ubiquitous with an estimated 4.6 billion ...
Mohler, Evelyn
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ELECTROMAGNETIC FIELDS ON FRACTALS [PDF]
Modern Physics Letters A, 2006 Fractals are measurable metric sets with non-integer Hausdorff dimensions. If electric and magnetic fields are defined on fractal and do not exist outside of fractal in Euclidean space, then we can use the fractional generalization of the integral Maxwell equations. The fractional integrals are considered as approximations of integrals on fractals. We
openaire +3 more sources
Controlling Electromagnetic Fields
Science, 2006 Using the freedom of design that metamaterials provide, we show how electromagnetic fields can be redirected at will and propose a design strategy. The conserved fields—electric displacement field D , magnetic induction field B , and Poynting vector B —are all ...
Pendry, J. B., Schurig, D., Smith, D. R.
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Increasing output power of electromagnetic vibration energy harvesters using improved Halbach arrays [PDF]
, 2013 This paper extends previously published studies into the performance of Halbach arrays for electromagnetic vibration energy harvesting. A Halbach array is a specific arrangement of permanent magnets that concentrates the magnetic field on one side of the
Zhu, Dibin +3 more
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Constraints of Using Conductive Screen-Printing for Chipless RFID Tags with Enhanced RCS Response
Applied Sciences, 2022 The analysis and experimental verification of the properties of four types of chipless RFID tags with an increased RCS response level designed and fabricated by conductive screen-printing using silver paste on foil and paper substrates was performed. The
Milan Svanda, Jan Machac, Milan Polivka
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Generation of Electromagnetic Field by Microtubules [PDF]
International Journal of Molecular Sciences, 2021 The general mechanism of controlling, information and organization in biological systems is based on the internal coherent electromagnetic field. The electromagnetic field is supposed to be generated by microtubules composed of identical tubulin heterodimers with periodic organization and containing electric dipoles.
Jan Pokorný, Jiří Pokorný, Jan Vrba
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High frequency characterization of Galfenol minor flux density loops
AIP Advances, 2017 This paper presents the first measurement of ring-shaped Galfenol’s high frequency-dependent minor flux density loops. The frequencies of applied AC magnetic field are 1k, 5k, 10k, 50k, 100k, 200k, 300k, 500 kHz. The measurements show that the cycle area
Ling Weng +4 more
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Sleep EEG-Based Approach to Detect Mild Cognitive Impairment
Frontiers in Aging Neuroscience, 2022 Mild Cognitive Impairment (MCI) is an early stage of dementia, which may lead to Alzheimer’s disease (AD) in older adults. Therefore, early detection of MCI and implementation of treatment and intervention can effectively slow down or even inhibit the ...
Duyan Geng +6 more
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Invariants of the electromagnetic field [PDF]
Journal of Mathematical Physics, 2014 We present a constructive proof that, in electrodynamics, all of the gauge-invariant Lorentz scalars and pseudoscalars can be expressed as functions of the quadratic ones.
Escobar, C. A., Urrutia, L. F.
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Mechanical-magnetic-electric coupled behaviors for stress-driven Terfenol-D energy harvester
AIP Advances, 2017 The stress-driven Terfernol-D energy harvester exhibits the nonlinear mechanical-magnetic-electric coupled (MMEC) behaviors and the eddy current effects.
Shuying Cao +7 more
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