نتایج جستجو برای: magnetic field analysis

تعداد نتایج: 3671632  

Journal: :physical chemistry research 0
gholam hossein bordbar shiraz university n. taheri shiraz university

in this paper, the hartree-fock method has been formulated to investigate some of the ground state properties of quasi-one-dimensional interacting electron gas in the presence of the magnetic field. the bare coulomb interaction between electrons has been assumed. for this system, we have also computed some of its thermodynamic and magnetic properties such as the energy, pressure, incompressibil...

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

چکیده ندارد.

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: :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...

Journal: :journal of computational applied mechanics 0
borhan beigzadeh biomechatronics and cognitive engineering research lab, school of mechanical engineering, iran university of science and engineering mahdi halabian biomechatronics and cognitive engineering research laboratory, school of mechanical engineering, iran university of science and technology

the use of magnetic fields in targeted drug delivery, especially for treatment of cancers and tumoral regions, is one of the significant techniques in the field of modern methods of treatment. considering that many vital biological tissues have been located deep in the body, then for targeted drug delivery and effective treatment in these tissues, it is required to bring therapeutic agent to th...

The purpose of the present study is to investigate the boundary layer separation point in a magnetohydrodynamics diffuser. As an innovation, the Re value on the separation point is determined for the non-Newtonian fluid flow under the influence of the non-uniform magnetic field due to an electrical solenoid, in an empirical case. The governing equations include continuity and momentum are solve...

Journal: :iranian journal of radiation research 0
a.d. esmaeeli department of medical radiation engineering, science and research branch, islamic azad university, tehran, iran m. pouladian department of medical radiation engineering, science and research branch, islamic azad university, tehran, iran a.s. monfared department of medical physics, babol university of medical sciences, babol, iran s.r. mahdavi department of medical physics, tehran university of medical sciences, tehran, iran d. moslemi department of radiation oncology, babol university of medical sciences, babol, iran

background: to reduce the dose to normal tissues surrounding the treated breast, a uniform magnetic field was used within a humanoid phantom in breast radiotherapy. materials and methods: monte carlo simulations were performed with geant4, irradiating humanoid phantoms in a magnetic field. to reconstruct phantoms, computed tomography (ct) data slices of four patients were used for the monte car...

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