background: with increased use of computers, exposure to electric and magnetic fields is increasing, the main objective of this study was to evaluate the electric and magnetic field strength in portable computers (laptops) and its relation with eyestrain users. methods: in this cross – sectional study, magnetic and electric fields in 125 laptop computers were measured from 30 cm and 50 cm dista...

This article describes the design, fabrication, and measurement of a low-profile beam-steerable transmitarray (TA) antenna based on ray-folding principles. The proposed TA consists planar feeding source, phase-shifting surfaces, metal plate as reflector. electromagnetic (EM) wave radiating from source would first be reflected by then propagate through surfaces to achieve focused beam in specifi...

Abstract The 2011 Tohoku-oki earthquake ( M w 9.0) was characterized by a huge fault slip on the shallowest part of plate interface, where behavior had been believed to be aseismic. In this study, we modeled two-dimensional resistivity distribution across area based ocean-bottom electromagnetic measurements understand physical properties around interface controlling rupture processes. optimal 2...

We evaluate the two-point functions of the electromagnetic field in (D+1)-dimensional spatially flat Friedmann-Robertson-Walker universes with a power-law scale factor, assuming that the field is prepared in the Bunch-Davies vacuum state. The range of powers are specified in which the two-point functions are infrared convergent and the Bunch-Davies vacuum for the electromagnetic field is a phys...

Electromagnetic riveting process (EMR) is a high-speed impact connection technology with the advantages of fast loading speed, large force and stable rivet deformation. In this work, axisymmetric sequential loose electromagnetic-structural coupling simulation models were conducted to perform electromagnetic Ti-6Al-4V titanium rivet, parameter analysis setup was performed based on coupled result...

The existing heat dissipation research on double disk magnetic couplers ignores the coupling influence of electromagnetic temperature–stress and other multiphysics fields, error between calculation analysis results measured values is large. Therefore, a multi-parameter optimization method for structures based orthogonal experimental design proposed. Based coupler model, three-dimensional finite...