The paper presents a numerical model using finite element method to calculate the magnetic field produced by current through a helical turn, whose thickness is comparable to the winding radius. The magnetic field was determined for helical turn considering homogeneous-linear and inhomogeneous-nonlinear medium, using the finite element software package Vector Field Opera. It analyzes the numeric...

Key words galaxies: magnetic fields – magnetohydrodynamics (MHD) – turbulence We summarize the current state of the long term discussion about the saturation mechanisms associated with rapid growth of small-scale magnetic field, that operate in large-scale galactic dynamos, and related problems with magnetic helicity conservation. Our general conclusion is that, taking into account magnetic hel...

-This paper details the electromagnetic behavior and the effects of magnetic and electromagnetic shields used in large power transformers based on engineering-oriented benchmark models, and presents some newly calculated and measured results both the magnetic field and stray-field loss related to the models, and examine the engineering applicability of 3-D eddy current analysis methods and the ...

In this paper, we evaluated the characteristics of the magnetic core loop antenna that is used to receive long wave radio signals for time standards. To evaluate the receiving sensitivity of the antenna, we calculated the antenna factor of the magnetic core loop antenna by combining a magnetic field simulation and a circuit simulation. The simulation results are in good agreement with the resul...

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...

the present study aimed at exploring the potential relationship between language learning strategies (lls) and factors such as major fields of study, sex, and language proficiency among university students across different fields such as medicine, sciences, engineering, humanities, and english. to this end, 200 master students were collected and tested. in addition, 25 english teachers were inc...

â â â  â â  abstract: â  china and asean have been maintaining a relationship both cooperative and competitive in the textile trade. due to its labor intensive feature and high dependence on foreign trade , the textile trade has received much attention after the 2008 financial crisis. the customs data (classified by the hs code) from year 2006-2009 is employed to research the impact of the cris...