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67 results for “Magnetic Field”
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Research ArticleOpen accessIn the abstractThe Bidispersed Model System and Binary System for FerrofluidsJian Li, Decai LiFerrofluids, dispersions of magnetic nanoparticles, are typical dipolar fluids whose behaviors can be modified using an external magnetic field. Such magnetically controlled effects result from interactions between the magnetic particles, which are enhanced by an applied magnetic field. Since the system of particles always possesses a size distribution, real ferrofluids represent a polydispersed system. A theoretical model of a bidispersed … …Physics International, Vol. 3, Issue 1 · 28 Jan 2013 · 6,997 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects of Repetitive Transcranial Magnetic Stimulation on Dystonia: An OverviewSergio Machado, Oscar Arias-Carrion, Flávia Paes et al.Problem statement: Repetitive Transcranial Magnetic Stimulation (rTMS) is a noninvasive procedure whereby a pulsed magnetic field stimulates electrical activity in the brain. Dystonia is characterized by several disabling symptoms for which effective, mechanism-based treatments remain elusive. Approach: Consequently, more advanced non-invasive therapeutic methods were required. A possible method to modulate brain activity and potentially viable for use in clinical practice … …Neuroscience International, Vol. 2, Issue 1 · 29 Jul 2011 · 10,029 accessesView PDFCite
Research ArticleOpen accessIn the abstractExperimental Study of Electromagnetic Environment in the Vicinity of High Voltage LinesWafa Tourab, Abdesselam Babouri, Mohamed NemamchaProblem statement: Several studies have investigated the impact of electromagnetic field generated by high voltage power lines on environment. The evaluation of electric and magnetic field quantities are of paramount interest in the characterization of electromagnetic environment of the proposed line. The purpose of this study was to analyze the behavior of electromagnetic fields generated by power lines in an … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 2 · 12 Jul 2011 · 8,316 accessesView PDFCite
Research ArticleOpen accessIn the abstractCytotoxicity Studies of Superparamagnetic Iron Oxide Nanoparticles in Macrophage and Liver CellsAroonsri Priprem, Pramote Mahakunakorn, Chunpen Thomas, Ian ThomasSuperparamagnetic Iron Oxide Nanoparticles (SPIONs) prepared by simplified coprecipitation were attractive as MRI contrast agents and drug carriers which could internally be manipulated under the influence of an external magnetic field and also cancer treatment due to additional hyperthermia effects. Problem statement: Macrophage and liver cells are potentially exposed to internal SPIONs, thus used for this cytotoxic tests for safety … …Current Research in Nanotechnology, Vol. 1, Issue 2 · 22 Jun 2011 · 11,624 accessesView PDFCite
Research ArticleOpen accessIn the abstractGeochemical, Petrographic and Magnetic Characteristics of Spinel Lherzolite Mantle Xenoliths from Jabal Remah Volcano, JordanAhmad Al-Malabeh, Tayel El-Hasan, Mahdi LataifehPeridotite ultramafic mantle xenoliths are occurring abundantly in the Harrat Al-Shaam basaltic province. Jabal Remah volcano is located in the Jordanian parts of the plateau and contains considerable amounts of mantle xenoliths within its pyroclastic successions. Mineralogical investigations show that the xenoliths are mostly of the spinel lherzolite type, which are characterized by a protogranular texture. Modally, the xenoliths are … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 7,183 accessesView PDFCite
Research ArticleOpen accessIn the abstractElectrical and Magnetoresistive studies Nd doped on La-Ba-Mn-O3 Manganites for Low-field Sensor applicationH. Abdullah, S. A. HalimProblem Statement: Electrical and magnetoresistive properties of the Nd doped (La1-xNdx)0.5Ba0.5MnO3 type samples with 0 ≤ x ≤ 1.0 had been prepared using the solid state reaction. These materials are extensively studied by the substitution of rare-earth compound is to understand the nature of transport phenomena in each system. Approach: The samples were calcined at 900°C for 12 h, pelletized … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 7,663 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Divalent Ions (A = Ca, Ba and Sr) Substitution in La-A-Mn-O Manganite on Structural, Magnetic and Electrical Transport PropertiesK. P. Lim, S. W. Ng, S. A. Halim et al.Problem statement: Microstructure of the grain will influence the properties of a polycrystalline manganites when different dopant is introduced. In this work, an effort had been made to investigate the influence of Ca, Ba and Sr substitution in La site. Approach: Polycrystalline manganites compound of La0.67A0.33MnO3 where A = Ba, Sr and Ca had been prepared via conventional solid-state reaction … …American Journal of Applied Sciences, Vol. 6, Issue 6 · 30 Jun 2009 · 8,253 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Partial Orientation in [100] Direction on the Magnetic Properties of Co-Ferrite Prepared from Nano ParticlesH. M. El-SayedChemical co-precipitation method was used for the preparation of Co-ferrite nano particles. The particle size was about 18 nm. A magnetic anisotropy of Co-ferrite could be increased by applying an external magnetic field during the pressing of the nano particles before the final sintering. This anisotropy enhanced the squareness and the coercivity of investigated samples. …American Journal of Applied Sciences, Vol. 6, Issue 1 · 31 Jan 2009 · 7,220 accessesView PDFCite
Research ArticleOpen accessIn the abstractApplication of MultiScale Hidden Markov Modeling Wavelet Coefficients to fMRI Activation DetectionFangyuan Nan, Yaonan Wang, Xiaoping MaProblem Statement: The problem of detection of functional magnetic resonance images (fMRIs), that is, to decide active and nonactive regions of human brain from fMRIs is studied in this paper. fMRI research is finding and will find more and more applications in diagnosing and treating brain diseases like depression and schizophrenia. At its initial stage fMRI detection are pixel-wise methods, … …Journal of Mathematics and Statistics, Vol. 4, Issue 4 · 31 Dec 2008 · 7,546 accessesView PDFCite
Research ArticleOpen accessIn the abstractOpen Circuit Field Distribution and Induced Voltage of a Cylindrical Permanent Magnet Linear GeneratorWijono, Hamzah ArofThis paper deals with the analytical computation of the magnetic field of a cylindrical permanent magnet linear generator. It offers an alternative solution to the magnetic field problem. A new approach to solve Poisson equation using Struve function is introduced and it offers a simple but accurate analytical estimation to the calculation of the open circuit flux density and induced … …American Journal of Applied Sciences, Vol. 4, Issue 11 · 30 Nov 2007 · 7,191 accessesView PDFCite