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Rajendran Duraisamy Ramalingam Ganapathy Sundaram Esakkimuthu Jawahar Paulraj Sivakumar Vaithilingam Mahian Omid Bellos Evangelos 《Journal of Thermal Analysis and Calorimetry》2020,140(1):33-51
Journal of Thermal Analysis and Calorimetry - The solar collector (reflector and receiver) is the primary device being used in the concentrating solar power technologies for tapping the solar... 相似文献
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Viswanathan Karthickeyan Wang Shuang Esakkimuthu Sivakumar 《Journal of Thermal Analysis and Calorimetry》2021,146(5):2303-2315
Journal of Thermal Analysis and Calorimetry - The aim of present work is to improve the efficiency and reduce the harmful exhaust emissions from diesel engines. Neat lemongrass oil was selected as... 相似文献
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Kelly Peeters Ana Miklav
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Vinjevec Esakkiammal Sudha Esakkimuthu Matthew Schwarzkopf rtomir Tavzes 《Molecules (Basel, Switzerland)》2021,26(22)
Olive oil production using three-phase decanter systems creates olive oil and two by-products: olive mill wastewater (OMWW) and pomace. These by-products contain the highest share of polyphenolic compounds that are known to be associated with beneficial effects on human health. Therefore, they are an attractive source of phenolic compounds for further industrial use in the cosmetic, pharmaceutical and food industries. The use of these phenolics is limited due to difficulties in recovery, high reactivity, complexity of the OMWW matrix and different physiochemical properties of phenolic compounds. This research, focused on OMWW, was performed in two phases. First, different polyphenol extraction methods were compared to obtain the method that yields the highest polyphenol concentration. Twenty-five phenolic compounds and their isomers were determined. Acidifying OMWW, followed by five minutes of ultrasonication, resulted in the highest measured polyphenol content of 27 mg/L. Second, the collection of polyphenolic compounds from OMWW via adsorption on unmodified iron (II, III) oxide particles was investigated. Although low yields were obtained for removed polyphenolic compounds in one removal cycle, the process has a high capability to be repeated. 相似文献
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Vaithilingam Sivakumar Gopal Sakthivel Thirumalai Srinivasan Senthil Kumar Manokar A. Muthu Sathyamurthy Ravishankar Esakkimuthu Ganapathy Sundaram Kumar Ravinder Sharifpur Mohsen 《Journal of Thermal Analysis and Calorimetry》2021,145(3):1103-1119
Journal of Thermal Analysis and Calorimetry - The shortage of freshwater is becoming a major threat to sustainable environmental development. Water desalination techniques provide solutions for... 相似文献
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S. Selvendran A. Sivanantharaja K. Kalaiselvi K. Esakkimuthu 《Optical and Quantum Electronics》2013,45(2):135-146
Optical wavelength conversion is expected to be an important technique for future advanced dense wavelength division multiplexing systems. It enhances wavelength routing capabilities, improves network reconfigurability and eliminating the problem associated with wavelength reuse in network. Here, simultaneous 50Gbps four channel wavelength conversion is established in S and C bands of ITU grid using four wave mixing (FWM) technique in high nonlinear fiber (HNLF) without additional pump signals. Since the four channel wavelength conversion is to be performed, the frequency spacing between the pairs of signal in S and C bands should be maintained in order to avoid the signal degradation by the effect of higher order FWM. Thereby the best frequency spacing between the pairs of signals in S and C bands is estimated to maintain good BER over the wavelength converted signals of both bands. So the selected frequency spacing between the pairs fulfills the freedom of selecting any frequency spacing within a pair of wavelengths in S and C band signals. It is also shown that CSRZ–DPSK modulated input signal enhances the BER of wavelength converted signals over the RZ–DPSK. In addition to this, uniform wavelength conversion over a wide bandwidth with a reduced length of HNLF is achieved and also the best power range is estimated to obtain good conversion efficiency. 相似文献
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