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127 articles for “modulation”
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Research ArticleOpen accessIn the keywordsSmart Wireless System in Fiber to the HomeMohammad Syuhaimi Ab-Rahman, Mastang, Kamarulzaman Mat, Kasmiran JumariProblem statement: Fiber To The Home (FTTH) is optical network that play important role to carry multimedia service to customers. The failure service caused by fiber optic cut or device malfunction always happens and it cannot be avoided. Approach: To solve the failure efficiently and effectively, it is needed a real time monitoring system that can work automatically to detect … …Journal of Computer Science, Vol. 8, Issue 3 · 24 Jan 2012 · 7,107 accessesView PDFCite
Research ArticleOpen accessIn the keywordsβ-Glucans and ProbioticsMattia Pia Arena, Giuseppe Spano, Daniela FioccoIn the recent decades, several health-promoting features have been ascribed to β-glucans. Biological properties such as anti-cancer, anti-inflammatory and immune-modulating activity have been claimed for these polysaccharides. Moreover, when β-glucans were used in association with probiotic bacteria, prebiotic effects have been demonstrated, due to their ability to enhance growth, metabolism and/or beneficial activities of probiotics. This review shall present an … …American Journal of Immunology, Vol. 13, Issue 1 · 12 Apr 2017 · 9,145 accessesView PDFCite
Review ArticleOpen accessIn the keywordsTransient Receptor Potential Vanilloid 1 Involvement in Animal Pain PerceptionCristina Vercelli, R. Barbero, G. ReIn last decades, Transient Receptor Potential Vanilloid 1 (TRPV1) has been the target of a large number of scientific investigations. It has been identified as a polymodal transducer molecule on a sub-set of primary sensory neurons which responds to various endogenous and exogenous stimuli including noxious heat (more than 42°C), protons and vanilloids such as capsaicin, the hot ingredient of … …American Journal of Animal and Veterinary Sciences, Vol. 10, Issue 1 · 30 Mar 2015 · 7,266 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPeak to Average Power Ratio Reduction of Orthogonal Frequency Division Multiplexing System with a Significant Low ComplexityMahamod Ismail, J. S. Mandeep, Montadar Abas Taher, M. T. IslamThe Orthogonal Frequency Division Multiplexing (OFDM) has been widely used in many applications in the last decade. It provides good benefits compared to the single carrier systems. However, it has a bad property represented by the high-output Peak to Average Power Ratio (PAPR) which is considered as its major problem. There are many techniques to reduce the PAPR values such … …American Journal of Applied Sciences, Vol. 9, Issue 12 · 20 Dec 2012 · 6,589 accessesView PDFCite
Research ArticleOpen accessIn the keywordsImplementation of a Novel Control Strategy Using Fuzzy Logic Controller to Shunt Active Filter for Line Harmonic ReductionN. Senthilnathan, T. ManigandanProblem statement: Now days, power quality has been given attention due to the intensive use of power electronic equipments in all types of industries such as steel, paper, textile industries and so on. These power electronic devices induce harmonic distortion into the supply lines which gives rise to many undesirable effects. Approach: This study presents a new method for harmonic … …Journal of Computer Science, Vol. 8, Issue 5 · 29 Feb 2012 · 7,087 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDigital Simulation, Design, Comparitive Analysis of Intelligent Controllers in Adjustable Speed Drives for PQ EnhancementA. Srikrishnan, B. Justus RabiProblem statement: This study deals with the analysis, design and comparison between fuzzy and genetic based adjustable speed drives with respect to the parameters which determines the quality of power. Approach: ASD system using fuzzy controllers provide ride-through capability during voltage sags, reduces harmonics, improves power factor and is highly reliable, whereas by using genetic algorithm optimized ASD systems, the … …American Journal of Applied Sciences, Vol. 9, Issue 1 · 21 Nov 2011 · 7,012 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAnalytical Study of Signal-to-Noise Ratio for Visible Light Communication by Using Single SourceMohammad Syuhaimi Ab-Rahman, Nurain Izzati Shuhaimi, Luqman Al-Hakim Azizan, Mazen Radhe HassanProblem statement: In this study, optical wireless communication system using visible light is studied for indoor application. Approach: The process started with the calculation on performance of single source white LED where received power, channel DC gain and quality of data transmission (SNR computation) are identified. Through the simulation results, the SNR performance is directly proportional to angle of incident … …Journal of Computer Science, Vol. 8, Issue 1 · 2 Nov 2011 · 7,479 accessesView PDFCite
Research ArticleOpen accessIn the keywordsVector Control of a Variable Reluctance Machine Stator and Rotor Discs ImbricatesAbdelhamid BoucettaThis study was devoted, in its first part, to the configuration and the modelling of the Imbricate Discs Variable Reluctance Machine (IDVRM), which was simplified with the assumption of stator structure alike to that of the synchronous machine, leading to the possibility of using the PARK's transformation. Then, a vector control strategy, which maintains a constant saturation level in the … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 4 · 31 Dec 2008 · 7,401 accessesView PDFCite
Research ArticleOpen accessIn the keywordsCaller Line Identity Delivery: A Computerized Call Alert ApplicationZoubir HamiciThe subject of this study was to analyze the Frequency Shift Keying caller ID FSK transmission protocol used by Jordan Telecom. and implement a call alert computer application. An FSK decoder is presented and a decoding algorithm based on asynchronous data communication is discussed. Data is captured through the RS232 serial port and a 32-bit software is presented as a … …Journal of Computer Science, Vol. 1, Issue 2 · 19 Oct 2005 · 4,906 accessesView PDFCite
Research ArticleOpen accessIn the keywordsExtracts of Pumpkin (Cucurbita pepo L.) Seeds Suppress Stimulated Peripheral Blood Mononuclear Cells in vitroChristiana Winkler, Barbara Wirleitner, Katharaina Schroecksnadel et al.In the traditional medicine in North America and Mexico, pumpkin seeds have been used as an anthelmintic agent and for supportive treatment in functional disorders of the bladder. Also anti-inflammatory and cardioprotective activity of pumpkin seeds is discussed. Three different extracts of pumpkin seeds were prepared and effects were investigated in unstimulated human peripheral blood mononuclear cells and in cells … …American Journal of Immunology, Vol. 1, Issue 1 · 31 Mar 2005 · 10,711 accessesView PDFCite