نتایج جستجو برای: magnetic field profiles

تعداد نتایج: 1185303  

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...

Journal: :J. Field Robotics 2015
Brian Claus Ralf Bachmayer

The accuracy of magnetic measurements performed by autonomous vehicles is often limited by the presence of moving ferrous masses. This work presents a parameterized ellipsoid field calibration method for magnetic measurements in the sensor frame. In this manner, the ellipsoidal calibration coefficients are dependent on the locations of the moving masses. The parameterized calibration method is ...

2000
G. Mathys C. Stehlé S. Brillant T. Lanz

We have completed a new study of the formation of hydrogen lines in dense magnetized plasmas. We have developed a global formalism including the effects of the magnetic field and of the motional electric field. The latter, resulting from the motion of the radiating hydrogen atom in the magnetic field, modifies the structure of the matrices appearing in the equation of transfer of the Stokes vec...

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...

2004
W. X. Ding D. L. Brower B. H. Deng D. Craig S. C. Prager V. Svidzinski

Far-infrared laser polarimetry with time response up to ,1 ms and spatial resolution ,8 cm has been successfully implemented on the Madison Symmetric Torus reversed-field pinch. Internal magnetic field and current density fluctuations are nonperturbatively measured. This is accomplished by taking parallel polarimetry chords which measure the line-integrated magnetic field fluctuations via Farad...

Journal: :iranian journal of public health 0
f. akbar khanzadeh

the exposure of workers to magnetic field that occur in aluminum reduction potrooms has been studied. the pattern of magnetic field intensity has been demonstrated along the shop. it has clearly been shown that the personnel working near the pots are exposed to 20-to 1000-gauss magnetic field. to set limits of exposure to magnetic fields, the literature on the biological effects of stationary m...

Journal: :Physical review letters 2010
A Tarasov S Hugger Hengyi Xu M Cerchez T Heinzel I V Zozoulenko U Gasser-Szerer D Reuter A D Wieck

Ballistic quantum wires are exposed to longitudinal profiles of perpendicular magnetic fields composed of a spike and a homogeneous part. An asymmetric magnetoconductance peak as a function of the homogeneous magnetic field is found, comprising quantized conductance steps in the interval where the homogeneous magnetic field and the magnetic barrier have identical polarities, and a characteristi...

Journal: :journal of physical & theoretical chemistry 2013
m. ghasemloo n. nikdel m. r. soltani m. firoozi f. soheilian

in this paper we studied the thermal negativity in a two-qubit xx spin ½ chain model and xxx spin1/2 chain model(isotropic heisenberg model)spin-1/2 chain subjected to an external magnetic field inz direction. we calculate analytical relation for the thermal negativity for two qubit xx and xxx spinchain models in the external magnetic field. effects of the magnetic field and temperature on then...

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