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Research ArticleOpen accessIn the abstractSynthesis and Characterization of Hot-Roll and Cold-Roll Byproduct-Derived Strontium Hard FerritesH. S. Woon, K. P. Lim, N. Puteri et al.Problem statement: Ceramic permanent magnets or more commonly known as strontium hexagonal ferrites have been widely used in permanent magnetic materials as they provide high remanence, high coercivity, relatively high energy product and good chemical stability. In this study, we treated factory byproduct from hot-roll and cold-roll steel industry was used as raw material in synthesis of strontium hexagonal hard … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,315 accessesView PDFCite
Research ArticleOpen accessIn the abstractSynthesis and Charaterization of Magnesium Zinc Ferrites as Electromagnetic SourceNoorhana Yahya, Ami Salwani Mohamad Nor Aripin, Azizuddin A. Aziz et al.Fabrication of Mg1-XZnXFe2O4 (where x = 0.2, 0.3, 0.4 and 0.5) samples using a conventional technique is reported. Oxides of magnesium, zinc and iron with purity of about 99.99% were mixed with distilled water in a milling machine for 12 hours. They were then filtered and presintered at 1250°C and sintered at 1350°C for 10 h in air. The phase … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 1 · 31 Mar 2008 · 9,003 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 · 7,194 accessesView PDFCite
Research ArticleOpen accessIn the abstractHigh Saturation Induction for Bi-Substituted Yttrium Iron Garnet Prepared Via Sol Gel TechniqueNoorhana Yahya, Goh Kah HeanY3.0-xBixFe5O12 samples (x = 0.2 and 0.4) were prepared via novel sol-gel and conventional solid-state techniques. The effect of bismuth in both techniques was investigated in terms of shrinkage, density, hysteresis and initial permeability. Sharp and clear diffraction XRD lines with highest peak appear at about 32° of the 2θ¸, for all the powders sintered at 900°C and 1250°C for … …American Journal of Applied Sciences, Vol. 4, Issue 2 · 28 Feb 2007 · 7,597 accessesView PDFCite
Research ArticleOpen accessIn the abstractEstimation of Vibrations in Switched Reluctance Motor DrivesS. Balamurugan, R. ArumugamThis study discusses a simple algorithm for estimation and reduction of Vibrations in a Switched Reluctance Motor (SRM) using magnetic circuit simulation in MATLAB/SIMULINK Environment. A Non-linear model is developed using magnetic circuit equations, wherein non-linearity is added using a inductance profile with back EMF. Dynamic characteristic of the SRM is simulated and the same is being verified experimentally. In … …American Journal of Applied Sciences, Vol. 2, Issue 4 · 30 Apr 2005 · 6,832 accessesView PDFCite
Research ArticleOpen accessIn the abstractControl of Oxygen Concentration by Using a Carbonaceous SubstanceMohanad Jadan, Jihad Said AddasiThe control of oxygen concentration in gas flow may be used in chemical industry, heat power engineering, ecology, automobile construction and other industrial branches. This control is realized over a broad range of oxygen concentrations. The control of the oxygen concentration is based on passing of gas flow through a measuring cavity of radio spectrometer and measurement of a magnetic … …American Journal of Applied Sciences, Vol. 2, Issue 4 · 30 Apr 2005 · 6,911 accessesView PDFCite
Research ArticleOpen accessIn the abstractStudy of Concentrated Solar Power Collectors with Organic Rankine Cycle and Magnetized NanofluidsSamuel Sami HowardThe performance of “magnetized nanofluids in a Parabolic Trough Concentrating Solar Collector (CSP)-integrated Organic Rankine Cycle (ORC) and a Thermal Energy Storage (TES) systems are studied. The characteristics of magnetized nanofluids AI2O3, CuO, Fe3O4 and SiO2 as heat transport fluid circulating in integrated Concentrating Solar Power (CSP) with ORC and TES under different solar radiations, angles of incidence and different … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 1 · 5 Mar 2022 · 6,657 accessesView PDFCite
Research ArticleOpen accessIn the abstractExperimental Antenna and Circuit Model for Charging an Electronic Device from the Ambient Electromagnetic WavesPankaj Chandra Kar, Md. Ariful Islam, Amit Paul et al.Electronic device use is on the rise as more and more tasks in everyday life are conducted online. As a consequence, charging is a unique aspect of any electronic device. However, the capacity of any electronic device's battery is fixed. On the other hand, charging the unit at any time and in any place is incredibly difficult. As a result, … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 1 · 18 Jan 2022 · 7,208 accessesView PDFCite
Research ArticleOpen accessIn the abstractBOOM: Rainbow’s Gravity as the Source of Light RefractionMohsen LutephyAli, A. F., Faizal, M., & Majumder, B. (2015). Absence of an effective Horizon for black holes in Gravity’s Rainbow. Europhysics Letters, 109(2), 20001. https://doi.org/10.1209/0295-5075/109/20001 Ali, A. F., & Khalil, M. M. (2015). A proposal for testing gravity’s rainbow. Europhysics Letters, 110(2), 20009. https://doi.org/10.1209/0295-5075/110/20009 Amelino-Camelia, G., Ellis, J., Mavromatos, N. E., & Nanopoulos, D. V. (1997). Distance Measurement and Wave … …Physics International, Vol. 12, Issue 1 · 23 Dec 2021 · 8,255 accessesView PDFCite
Research ArticleOpen accessIn the abstractImplementation of Sensor Filters and Altitude Estimation of Unmanned Aerial Vehicle using Kalman FilterMertcan Akın, Aytaç Gören, Ahmed RachidSensor outputs are used when finding the position of an Autonomous Aerial Vehicle (UAV). Outputs such as air pressure, vehicle acceleration or magnetic field help the vehicle decide its attitude and altitude. However, it must also predict the next movement of the vehicle. The Kalman Filter is used to assist observing and predicting the state of a system. To achieve … …Journal of Mechatronics and Robotics, Vol. 5, Issue 1 · 30 Jan 2021 · 8,030 accessesView PDFCite