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28 articles for “Sunlight”
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Research ArticleOpen accessIn the abstractThe Solar Tracking System by Using Digital Solar Position SensorSingthong PattanasethanonProblem statement: An optimal control on two axes and design for solar tracker which called altitude and azimuth is challenge. Approach: The phototransistor with the shade that blocks the screen was employed as a detector of solar beam radiation. The height of the screen determined the sensitivity operation or period of tracking in this solar tracker. The phototransistor is particularly … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 5 Nov 2010 · 10,179 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Study of Solar Reflector Efficiency of Parabolic Dual TroughSopa Cansee, Adisak Pattiya, Singthong Pattanasethanon, Worraphan SombutteraProblem statement: The receiver of parabolic dual trough had been designed and built in order to increase efficiency of solar radiation accumulation by using iron-aluminum sheet as an intermediate in receiving heat and it is the study into how to benefit from solar radiation energy. This research proposed the principle of changing solar radiation to be heating energy by using … …Energy Research Journal, Vol. 1, Issue 2 · 31 Oct 2010 · 8,104 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn in vitro Assessment on the Efficacy of Clay-Based Formulated Cells of Pseudomonas Isolate UTAR EPA2 for Petrol DegradationA. S.Y. Ting, M. T. Fang, C. S. TeeProblem statement: Application of free-cell forms is usually impractical to achieve satisfactory bioremediative effect because the microbes are encumbered by the biotic and abiotic stresses from the environment. Approach: In this study, a hydrocarbon-degrading bacterium (Pseudomonas isolate UTAR EPA2) was formulated with various combinations of formulative materials, comprising of clay-based carrier materials such as Bentonite (B) and Kaolin (K), enrichment … …American Journal of Applied Sciences, Vol. 7, Issue 2 · 28 Aug 2010 · 7,653 accessesView PDFCite
Research ArticleOpen accessIn the abstractPhotostability of Ponceau 2R Doped Thin Film Sol-Gel Silica as Luminescent Solar CollectorS.M. RedaProblem statement: Current researches had shown that the photostability of a luminescent solar collector depend on the method of its preparation and type of using dye. This research therefore aimed at studying the stability of luminescent solar collector prepared by sol-gel spin coating method using Ponceau 2R. Approach: The effect of silica matrix on the photostability and fluorescence properties of … …Energy Research Journal, Vol. 1, Issue 1 · 30 Jun 2010 · 7,224 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of γ- ray, Microwave Heating and Solar Irradiation of Apple Juice on Organochlorinated Pesticides ResiduesK. Al-Ismail, S. Herzallah, H. DmoorThis study was conducted to evaluate the effect of solar radiation, microwave heating and γ-irradiation on the Organochlorinated Pesticide (OCP’s) in apple juice. The solar radiation caused a destruction of 20% after 20 hr exposure to sunlight compared to 12% reduction for the tested OCP’s after microwave heating for 10 min. On the other hand, the use of γ-irradiation leads … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 1 · 31 Mar 2009 · 8,165 accessesView PDFCite
Research ArticleOpen accessIn the abstractAppraisal of Thermal Properties of Mud in the Ariake Sea, JapanM. Azizul Moqsud, Shigenori Hayashi, Yan Jun Du, Daisuke SuetsuguIn order to explore the thermal properties of the Ariake Sea mud and to find out the affecting factors which affect these values, a portable thermal properties analyzer was used. Thermal conductivity, thermal resistivity, thermal diffusivity and volumetric heat capacity of the mud samples collected from both the tidal flat and inside the deep sea were measured in the laboratory. … …American Journal of Environmental Sciences, Vol. 4, Issue 2 · 30 Apr 2008 · 6,969 accessesView PDFCite
Research ArticleOpen accessIn the abstractSensitization of Photohemolysis by a New Extraction from Flowers and Aerial Parts of Cichorium Pumilum Jacq: Effects of Inulin and Hydrogen PeroxideM-Ali H. Al-Akhras, Amr Amin, Karima Mohammad et al.Addition of inulin and hydrogen peroxide to new photosensitizers extracted from the flowers and aerial parts of the chicory (Cichorium Pumilum Jacq) have been investigated. Some of the isolated photosensitizers remain unidentified compounds. Chicory extracts are found to be dependent on light and temperature. Higher photohemolysis rate was noticed under the influence of light as compared to temperature. The effect … …American Journal of Pharmacology and Toxicology, Vol. 2, Issue 2 · 30 Jun 2007 · 7,722 accessesView PDFCite
Research ArticleOpen accessIn the abstractIn Vitro Studies on the Effect of Phototoxicity of A New Photosensitizer Extracted from Flowers and Aerial Parts of Cichorium pumilumM-Ali H. Al-Akhras, Amr Amin, Karima Mohammad et al.New photosensitizers have been extracted from the flowers and aerial parts of the Cichorium pumilum Jacq (chicory). Chicory grows naturally in local wild areas and is known to cause quick death of only white sheep during its flowering season in autumn. Some of those isolated photosensitizers are yet to be further characterized. Preliminary investigations show a high degradation of isolated … …American Journal of Pharmacology and Toxicology, Vol. 2, Issue 2 · 30 Jun 2007 · 7,757 accessesView PDFCite