نتایج جستجو برای: magnetic field simulation

تعداد نتایج: 1544174  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1382

چکیده ندارد.

2000
Yoshihiro Nishiyama

Ground state of the two-dimensional hard-core-boson model subjected to external magnetic field and quenched random chemical potential is studied numerically. In experiments, magneticfield-tuned superconductor-insulator transition has already come under through investigation, whereas in computer simulation, only randomness-driven localization (with zero magnetic field) has been studied so far: T...

Journal: :پژوهش های زراعی ایران 0
حسن فیضی پرویز رضوانی مقدم علی اصغر برهمند

in order to study the effects of magnetic field, silver nano particles and micronutrient fertilizers on sugar beet, an experiment was conducted at razavi research and technology institute, mashhad, iran. experiment carried out with seven treatments based on randomized complete block design with three replications. treatments included (t1) magnetic field and silver nano particles + kemira fertil...

Journal: :Plasma Physics and Controlled Fusion 2023

Magnetic flux ropes (MFRs) play an important role in high-energetic events like solar flares and coronal mass ejections the atmosphere. Importantly, observations suggest association of some flaring with quadrupolar magnetic configurations. However, formation subsequent evolution MFRs such configurations still need to be fully understood. In this paper, we present idealized magnetohydrodynamics ...

Journal: :Nuclear Technology & Radiation Protection 2022

Betatrons have the advantages of small size, lightweight, and simple operation. They are widely used in non-destructive testing, cargo, vehicle safety inspection systems. Magnetic field distribution is an essential parameter betatrons has been investigated via experimental methods. Recently, simulations performed for magnetic generated by different pole parameters. In this study, finite element...

Journal: :iranian journal of medical physics 0
seyed mohammad firoozabadi biomedical engineering department, research deputy of medical sciences faculty, tarbiat modares university, tehran, iran

introduction increase in alpha band is observed when blood perfusion in frontal area of head decreases. the present study evaluated some changes in the alpha band particularly, alpha-1 of frontal and central areas of the head, when several areas were exposed simultaneously to magnetic field. materials and methods five points of head (f3, f4, cz, t3, and t4) of twenty healthy male participants w...

Journal: :international journal of advanced design and manufacturing technology 0
reza keimanesh department of mechanical engineering, k. n. toosi university of technology, iran cyrus aghanajafi department of mechanical engineering, k. n. toosi university of technology, iran

this study is considering a micropolar fluid flow over a porous stretching sheet in the presence of thermal radiation and uniform magnetic field. the effects of local variation in thermal conductivity of micropolar fluid on heat transfer rate from the sheet are investigated; besides, the impacts of radiation, magnetic field and porous sheet on variations of thermal boundary layer thickness are ...

Journal: :journal of research in medical sciences 0
akram ahangarpour hadi fathi-moghaddam mohammad javad tahmasebi birgani hajieh shahbazian mohammad badavi

background : electromagnetic fields are associated with production, transmission and use of electricity. in this  tudy we have investigated the effects of short and long time alternative magnetic fields' (amf, 50 hz) exposure on the secretion of hypothalamic-pituitary-gonadal axis in the male rats. methods : forty eight wistar male rats, same range of age and weight were divided into four group...

Journal: :journal of structural engineering and geo-techniques 2012
s. f ashrafi m behzad a naseri h ghafarian malmiri

in this study, the feasibility of using magnetic technology to reduce the dispersion of soil has been investigated. the reference treatment was potable water and 3 magnetic water devices (with different magnetic intensities) were used for magnetizing the potable water. the results showed that the magnetic field has a significant effect in order of 5 percent on increasing of magnesium concentrat...

2009
Min Cheol Ahn Tsuyoshi Yagai Seungyong Hahn Ryuya Ando Juan Bascuñán Yukikazu Iwasa

This paper presents experimental and simulation results of a screening current induced magnetic field (SCF) in a high temperature superconductor (HTS) insert that constitutes a low-/high-temperature superconductor (LTS/HTS) NMR magnet. In this experiment, the HTS insert, a stack of 50 double-pancake coils, each wound with Bi2223 tape, was operated at 77 K. A screening current was induced in the...

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