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295 articles for “LED”
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Research ArticleOpen accessEvery word in the titleManipulating Light Duration and Intensity Using LEDs to Enhance Off-Season Yield of Hylocereus polyrhizus in a Tropical Area of Banyuwangi, East Java, IndonesiaKanthi Pangestuning Prapti, Setyono Yudo Tyasmoro et al.This study aimed to examine the effect of light duration and Light Emitting Diode (LED) power on the production of red dragon fruit during the off-season. The experiment was conducted in Bulurejo, Banyuwangi, East Java, Indonesia, from March to June 2024 using a split-plot design. The main plot consisted of LED illumination duration (2, 4, and 6 hours), while the … …OnLine Journal of Biological Sciences, Vol. 26, Issue 3 · 3 Aug 2026 · 962 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleLED TECHNOLOGY FOR BUILT AND ENVIRONMENT OF MALAYSIAC. H. Lim, Masoud Dalman, Mona Erfanian Salim et al.Increasing the country population and the trend of industrialization caused increasing Malaysia's electricity consumption. Light Emitting Diode (LED) is a new sustainable technology that has taken over the conventional lighting in built and environment in a few developed counties in the recent years. However, Malaysia is left behind in using this technology due to unfamiliarity of the decision makers on … …American Journal of Applied Sciences, Vol. 11, Issue 9 · 1 Oct 2014 · 6,863 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleTime-series Evidence for Export-led Growth Paradigm: A Case Study of ZimbabweCyril A. OgbokorThe study addresses empirically the Export-led Growth Hypothesis (ELGH) using Zimbabwe as a case study. This research work attempts to provide some evidence in this regard by examining the influence of trade on economic growth in the economy and ascertaining if the regressors utilised are good predictors of growth. Ordinary Least Squares (OLS) method is resorted in order to estimate … …Journal of Social Sciences, Vol. 1, Issue 2 · 30 Jun 2005 · 7,453 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleBlue and White LED Lights Enhance Biosynthesis of Rosmarinic Acid in Cell Culture of Agastache rugosaWoo Tae Park, Sun Kyung Yeo, Nam Su Kim et al.Agastache rugosa, an herbaceous Korean perennial, contains pharmacologically important phenylpropanoids such as tilianin and rosmarinic acid. However, the knowledge of biosynthesis of phenylpropanoids from A. rugosa is limited. Therefore, a study was conducted to develop an efficient protocol for in vitro regeneration of A. rugosa and to investigate the influence of three different LED light wavelengths (white, blue and red) … …OnLine Journal of Biological Sciences, Vol. 20, Issue 2 · 24 May 2020 · 6,860 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleModel Identification and Wall-Plug Efficiency Measurement of White LED ModulesAhmed Zurfi, Jing ZhangIn this study, an experimental method is developed to measure the Wall-Plug efficiency of white LED modules without using any apparatus or sensors to measure the intensity of light. The tested LED module consists of a white LED chip-on-board affixed on a heatsink. The proposed method is mainly based on thermal and electrical models of the LED module. Measurements of … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 2 · 15 Jun 2016 · 8,290 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleWhite Light Generation in Dy3+-Doped Sodium Lead Alumino Borosilicate Glasses for W-LED ApplicationsK. Vijaya Babu, A. Subba Rao, V. Madhuri, K. SureshExcitation and emission spectra of sodium lead alumino borosilicate glass doped with different concentrations of Dy3+ have been reported. The concentration of Dy3+ were varied from 0.5 to 1.5 mol%. As a result of 385 nm excitation wavelength, the luminescence spectra showed three characteristic bands at 482 nm and 575 nm and 665 nm. These absorption bands were attributed to … …Journal of Aircraft and Spacecraft Technology, Vol. 4, Issue 1 · 3 Jun 2020 · 6,857 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSimulation and Optimization of Perovskite Type Micro Thermoelectric GeneratorJeyashree Yesuraj, Vimala Juliet Ashokan, Sukhi Yesuraj, Rebecca Shirly Harrison ChristleyIn this study the thermoelectric properties of perovskite type Ca-Mn-O3 compounds are estimated for the operating range of 850-1150 K. The optimization of design module for maximum power output is obtained using the analytical expression for power of Thermoelectric Generator (TEG). For the optimum length of 1.4 μm and with a cross sectional area of 0.3×0.3 μm the power obtained … …American Journal of Applied Sciences, Vol. 13, Issue 11 · 26 Nov 2016 · 7,381 accessesView PDFCite
Research ArticleOpen accessIn the keywordsMonomers Release from Dental Composites: Effect of Immersion Media and Photoactivation Light SourceRaquel A.B. da Silva, Talita P. Prates, Driely Barreiros et al.The present study aimed to evaluate qualitatively and quantitatively the products released by composites with different light sources when immersed in distilled water or artificial saliva. Thirty-six samples were obtained from the composites using a silicone matrix. Specimens were divided into 12 groups according to: Composite (Charisma®, FiltekTMSilorane or GC Kalore®), device used for the materials photoactivation (halogen light or … …Current Research in Dentistry, Vol. 5, Issue 1 · 14 Jan 2015 · 7,188 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Review of Security System for Smart Home ApplicationsMohammad Syuhaimi Ab-Rahman, Mohd Ariff RazalyProblem statement: This study was discussed the development of security system for smart home applications. A more robust security system built around the world. The security system had developed based on a microcontroller device as a receiver, processor and transmitter of information. Approach: The method of transmitting and receiving data was done wirelessly using a ZigBee device. ZigBee had the … …Journal of Computer Science, Vol. 8, Issue 7 · 21 Jun 2012 · 7,358 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Comparison of Experimental and Analytical Study of the Gaussian IntensityDistribution for Light Emitting Diodes BeamMohammad Syuhaimi Ab-Rahman, Luqman Al-Hakim Azizan, Harry Ramza, Zulkifli MusaProblem statement: Wireless communication using white Light Emitting Diodes (LEDs) is the latest research field for next-generation communication. This study studies the comparison of Gaussian intensity distribution of the white LED using experimental and analytical method. The white LEDs are conducted to transmit an audio signal to the receiver. The receiver circuit consist of solar cell connected to the speaker … …Journal of Computer Science, Vol. 8, Issue 6 · 17 Mar 2012 · 7,269 accessesView PDFCite