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B. Madhura Ch. Jagadeeswara Rao E. Vetrivendan C. Mallika U. Kamachi Mudali 《Energy Materials: Materials Science and Engineering for Energy Systems》2018,13(1):188-193
Pyrolytic graphite (PyG) is a highly oriented, dense and crystalline form of graphite, which exhibits superior air oxidation resistance, corrosion resistance, and favourable mechanical, thermal, and electrical properties compared to conventional graphite materials. It is proposed as the material of construction for high-temperature molten LiCl-KCl for pyrochemical reprocessing of metallic fuel. In the present study, long-term corrosion behaviour of PyG in LiCl-KCl molten salt with 5?wt-% UCl3 was evaluated by immersion studies at 873?K for 2000?h, under inert argon atmosphere. Characterisation of PyG before and after molten salt exposure was carried out using X-ray diffraction technique, scanning electron microscope with energy dispersive spectroscopy, laser Raman spectroscopy and X-ray photo-electron spectroscopy. The results revealed the superior corrosion resistance and excellent phase stability of PyG with negligible weight change and no appreciable change in the surface chemistry and morphology up to the exposure time of 2000 h. 相似文献
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The quality of sunflower oil, as affected by fish (Catla catla) frying at 180 °C for 14 h was investigated. The purpose of the study was to find out the quality deterioration of sunflower oil with respect to time as affected by fish frying and to generate equations that can be used for predicting the quality parameters. The physico-chemical characteristics of sunflower oil were evaluated by drawing out the oil samples (75 ml) from the fryer at an interval of 2 h. The parameters evaluated were refractive index, colour, total polar material, free fatty acids, iodine value and peroxide value. There was a gradual increase in refractive index and colour with time of frying which was found to be significant (P < 0.05) in the latter. Iodine value decreased significantly (P < 0.05) with time of frying. Peroxide value first increased up to 12 h of frying and then decreased. After 10 h of frying, the total polar materials were 26.9%, indicating the need for replenishment or refinement of sunflower oil. Total polar material correlated well (r > 0.97) with colour, free fatty acids, peroxide value and time of frying. Free fatty acids correlated well (r > 0.96) with colour, total polar material and duration of frying. Fit of the equations was determined for total polar material and free fatty acids as a function of the respective correlated parameters. 相似文献
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Mallika G. C. Alsadoon Abeer Pham Duong Thu Hang Mai Ha Thi Abdullah Salma Prasad P.W.C. Nguyen Tran Quoc Vinh 《Programming and Computer Software》2021,47(5):402-414
Programming and Computer Software - Type 2 Diabetes (T2DM) makes up about 90% of diabetes cases, as well as tough restriction on continuous monitoring and detecting become one of key aspects in... 相似文献
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Jason Scott Deyan Guang Kornrat Naeramitmarnsuk Mallika Thabuot Rose Amal 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》2002,77(1):63-69
Fly ash samples from the Bayswater and Eraring power plants, located in New South Wales, Australia, were used in a preliminary study on zeolite synthesis by hydrothermal treatment with sodium hydroxide under various conditions. The treated fly ash was tested for the ability to remove lead ions from aqueous solution. Both fly ashes were partially converted to zeolite. The zeolites formed under the experimental conditions were zeolite Na‐P1 and sodalite octahydrate for the Bayswater ash and phillipsite, zeolite X, zeolite Na‐P1 and sodalite octahydrate for the Eraring ash. The type of zeolite formed was dependent on the treatment time and sodium hydroxide concentration. In the case of the Bayswater ash, zeolite Na‐P1 was formed by treatment with 4 mol dm?3 NaOH for 48 h while treatment with 5 mol dm?3 NaOH for 96 h produced sodalite octahydrate at the expense of zeolite Na‐P1. In the case of the Eraring ash, phillipsite was formed following treatment with 3 mol dm?3 NaOH, zeolite X and zeolite Na‐P1 were formed following treatment with 4 mol dm?3 NaOH and sodalite octahydrate was formed following treatment with 5 mol dm?3 NaOH. A maximum cation exchange capacity of ~400 meq/100 g was achieved by both treated ash samples. Treatment of a solution with a lead ion concentration of 120 ppm using 0.5 g of both treated ash samples (S/L ratio = 0.25 g/100 cm3) achieved complete removal in 5 min, whereas treatment with 0.1 g of each material (S/L ratio = 0.05 g/100 cm3) achieved complete lead ion removal after 24 h. © 2001 Society of Chemical Industry 相似文献
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Nasirullah S. Rajalakshmi T. Mallika M. N. Krishnamurthy K. V. Nagaraja O. P. Kapur 《European Journal of Lipid Science and Technology》1983,85(10):399-402
Physico-chemical study, over a set of oxidized, bleached, neutralized groundnut oil samples and admixed samples of groundnut and castor oils, have been carried out to determine any possible deviation in their quality parameters, caused due to these treatments. Detection of rancid groundnut oil and its differentiation from castor oil can be accomplished qualitatively by use of methanolic sulfuric acid decomposition and ferrous ions induced cleavage methods. Few chemical spray reagents have also been selected and applied for detection and differentiation purpose on thin layer chromatoplates. Among the reagents, ferrous thiocyanate, potassium iodide and starch, alkaline permanganate, combinations of hydroiodic, hydrochloric, acetic acids and starch and hydroiodic acid and starch, found working as brown, blue, and yellow coloured sports could be seen for rancid groundnut oil on thin layer chromatoplates. Fresh groundnut and castor oils were silent in all the estimations, suggesting a clear distinction between castor oil and rancid groundnut oil. 相似文献
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Sravani K. Girija Mallika D. Kali Naga Meghana G. Divya U. Naga Bhavani Chand Ch. Gopi Vasantha K. Rao K. Srinivasa 《Microsystem Technologies》2020,26(8):2569-2574
Microsystem Technologies - This paper presents, the design and simulation of RF MEMS shunt capacitive switch. The electromechanical and electromagnetic analysis of the switch has been done using... 相似文献