نتایج جستجو برای: generate a secondary magnetic field

تعداد نتایج: 13731869  

2013
Nilangshu K. Das Parthasarathi Barat Sounak Dey

In various technological and scientific applications, different types of coil systems are being used to produce uniform alternating magnetic field. The dimensions of these coil systems are considerably larger than the volume of interest. There is a necessity to reduce the dimension of the coil system without sacrificing the extent of uniformity of the magnetic field. This problem has a wide aud...

Unsteady hydromagnetic generalised Couette flow of a viscous, incompressible and electrically conducting fluid between two horizontal parallel porous plates Darcian channel in the presence of a uniform transverse magnetic field taking Hall current and ion-slip into account in a rotating system is investigated. An exact solution of the governing equations is obtained by Laplace transform techniq...

Journal: :Journal of Geophysical Research 1899

Journal: :پژوهش های زراعی ایران 0
محمد حسن راشد محصل اکبر علی وردی

in order to compare effect of magnetic field and frigate surfactant to enhance the efficacy of iodosulfuron-methyl-sodium plus mesosulfuron-methyl (chevalier) to control wild oat, a greenhouse experiment of dose-response was conducted. treatments were 0, 3, 6, 12, 18 and 24 doses g a.i. ha-1 of chevalier (i) without treatment, (ii) with frigate % 0.1 v/v, (iii) with magnetic field, and (iv) fri...

Journal: :Journal of the American College of Cardiology 2006
Satya Reddy Atmakuri Eli I Lev Carlos Alviar Edward Ibarra Albert E Raizner Stuart L Solomon Neal S Kleiman

OBJECTIVES The aim of this study was to evaluate the feasibility of a magnetic-assisted navigation system during percutaneous coronary intervention (PCI) of tortuous and severely angulated coronary arteries. BACKGROUND The magnetic navigation system consists of two 0.8-T permanent magnets which generate a magnetic field over the heart. Altering the magnetic vector deflects a coronary guidewir...

Journal: :International Journal of Theoretical Physics 2010

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم انسانی 1393

this research study aimed to investigate the relationship between field-dependence/independence cognitive style and vocabulary learning strategies among iranian efl learners. ninety participants majoring in english translation at arak university were chosen. the participants were classified into two groups of field-dependent and independent based on the results of group embedded figure test (ge...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده علوم 1391

nanotechnology is a general term which is related with field of all advanced science term that generally predicates with all modern technologies which consider nanoscales. improvement in the quality of products by adding some nanoparticles and study of their behavior in the presence of these nanoparticles have been obtained in many researches. on the other hand numerous demands for sowing ...

2009
H. Sanchez M. Poole A. Trakic S. Crozier

Introduction: Rapidly switched magnetic field gradients induce eddy currents in the nearby conducting structures of the MRI scanner. These eddy currents in turn generate an opposing and distorting transient magnetic field in the region of interest (ROI) with consequential image distortion. A tailored current pulse is usually applied to minimize the undesired effects of the eddy currents in the ...

2014
Amine Samoudi Karen Van Audenhaege Günter Vermeeren Micahel Poole Luc Martens Roel Van Holen Wout Joseph

INTEC, Ghent University/iMinds, Ghent, Belgium Combining Single Photon Emission Computed Tomography (SPECT) with Magnetic Resonance Imaging (MRI) results in an interaction of the time-varying magnetic field gradients with the highly conducting tungsten collimator, which generates a secondary magnetic field causing spatial distortions in reconstructed MR images. Accurate simulations are importan...

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