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129 articles for “Frequencies”
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Research ArticleOpen accessEvery word in the titleDifficulties of Standard Arabic Phonemes Spoken by Non-Arab Primary School Children based on Formant FrequenciesN. A. Abdul-Kadir, R. SudirmanProblem statement: The study of Malaysian Arabic phoneme is rarely found which make the references work difficult. Specific guideline on Malaysian subject is not found even though a lot of acoustic and phonetics research has been done on other languages such as English, French and Chinese. Approach: This study discussed about the correct and simplest way of Arabic phonemes pronunciation … …Journal of Computer Science, Vol. 7, Issue 7 · 28 Jun 2011 · 7,458 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFrequencies of the C1236T, G2677T/A, and C3435T Polymorphisms of the MDR1 Gene and their Haplotypes in UzbekistanS. B. Nurmatova, A. A. Abdurakhimov, O. S. Charishnikova et al.P-glycoprotein (P-gp) is encoded by the MDR1 gene and is involved in the pharmacokinetics of drugs. The best-known MDR1 gene polymorphisms are 1236C>T, 3435C>T, and 2677G>T/A, which are associated with protein folding, changes in mRNA levels, and drug pharmacokinetics. The aim of this study was to identify the frequency of distribution of functional polymorphisms C1236T, C3435T, G2677T/A of the MDR1 … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 4 · 5 Dec 2022 · 5,022 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDetermination of Natural Frequencies through Modal and Harmonic Analysis of Space Frame Race Car Chassis Based on ANSYSMohammad Al Bukhari Marzuki, Mohammad Hadi Abd Halim, Abdul Razak Naina MohamedSpace frame chassis the preferred choice of chassis design due to its low cost, high strength, lightweight and safe qualities, which made it suitable for a single-seat race car application and an important aspect in the construction of the space frame race car chassis. Key sections of a space frame race car chassis consist of front and main hoops, side … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 4 · 2 Sep 2015 · 9,913 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImproved Dielectric Model for Polyvinyl Alcohol-Water Hydrogel at Microwave FrequenciesYou Kok Yeow, Zulkifly Abbas, Kaida Khalid, Mohamad Zaki Abdul RahmanProblem statement: The study described rigorous dielectric modeling for Polyvinyl Alcohol (PVA)-water hydrogel mixture at microwave frequencies. Approach: A commercial open-ended coaxial sensor was used to measure the dielectric constant, loss factor and ionic conductivity, σ of PVA-water hydrogel mixture ranging concentration of 80-100% water content. Results: The sensor was operating between 0.13 and 20 GHz at and above of … …American Journal of Applied Sciences, Vol. 7, Issue 2 · 28 Feb 2010 · 9,045 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSeparating Low Pass and High Pass Frequencies in the Image Without loosing informationZ. Alqadi, J. Musbah, A. L. MontengroGranulometries are morphological image analysis tools that are particularly useful for estimating object sizes in binary and grayscale images, or for characterizing textures based on their pattern spectra. There are many applications that morphology can be applied to. Some morphological operations like dilation, erosion and open-close are used in image and video processing, but with no application to pre-processing for … …Journal of Computer Science, Vol. 4, Issue 10 · 31 Oct 2008 · 6,428 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Pulsating Circular Hot Air Jet Frequencies on Local and Average Nusselt NumberRozli Zulkifli, Kamaruzzaman Sopian, Shahrir Abdullah, Mohd Sobri TakriffThe study was carried out to determine the effect of pulsating frequencies on the local and average heat transfer characteristic of a heated circular air jet. The velocity profile of a heated circular pulsating air jet was measured in the first part of the study. The same set-up was used to measure the heat flux of the pulsating jet impinging … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 1 · 31 Mar 2008 · 7,500 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffects of Low Frequencies on Three Phase Induction Motor Performance Operating in Close Proximity to Rated SpeedQazem Jaber, Qais Naman, Mahdi ShamaseenVariable speed drives (VSD) are adhered to induction motors in most of the present industrial applications. And since the world has become more conscientious to energy saving, inverters established them selves in domestic buildings and industry. Square wave inverters generate dominant harmonics of the 5th, 7th, 11th and 13th order. Inverters based on PWM strategy produce much higher harmonic order … …American Journal of Applied Sciences, Vol. 4, Issue 5 · 31 May 2007 · 7,516 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStrong Dependence at the Long Run and the Cyclical Frequencies in the Specification of the US Unemployment RateL. A. Gil-AlanaThis study deals with the presence of long range dependence at the long run and the cyclical frequencies in the specification of the US unemployment rate. We use a parametric procedure that permits us to test unit and fractional roots in raw time series. The results show that both the long run and the cyclical structures present a component of … …American Journal of Applied Sciences, Vol. 2, Issue 2 · 28 Feb 2005 · 6,501 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleChange in Temperature of Skin, Blood, Muscle and Bone Tissues Due to Mobile Phone Radiations at Frequencies 800, 900, 1800 and 2450 MHzMushtaq Ahmed Bhat, Vijay KumarThe mathematical calculation of change in temperature of skin, blood, muscle and bone tissues of human being working at the frequency of 800, 900, 1800 and 2450 MHz is done in this manuscript. The power of the antenna of mobile phone is of 2 W. The calculation is made at the various depths, by taking the different distances of human … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 3 · 21 Jun 2015 · 7,353 accessesView PDFCite
Research ArticleOpen accessIn the keywordsGeometrical and Physical Effects on the Instability of a Fluid-Conveying PipeDahmane Mouloud, Samir Zahaf, Benkhettab Mohamed et al.The endeavor of this paper is to calculate frequencies and critical velocity of pipe carrying incompressible fluid are obtained using standard finite element method. Finite element beam type with two degrees of freedom per node was used. The natural frequencies of our system are calculated by using a program developed on MATLAB. The results are compared with those predicted by … …Current Research in Bioinformatics, Vol. 9, Issue 1 · 2 Nov 2020 · 11,324 accessesView PDFCite