http://nopr.niscair.res.in/handle/123456789/12675 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/12686 Title: Effect of glass slope angle and water depth on productivity of double slope solar still <br/> <br/>Authors: Al-Garni, Ahmed Z; Kassem, Ayman H; Saeed, Farooq; Ahmed, Faizan <br/> <br/>Abstract: This study presents design, fabrication and testing of double slope solar still and also optimization of glass tilt angle (25, 30, 35 and 40°) and water depth (1, 2 and 3 cm) in Saudi Arabian climatic conditions. Optimum tilt angle was found to be 35° for both summer and winter seasons, and also productivity increases with reduction in water depth. A number of existing energy and mass balance equations were used to validate experimental results. Numerical and experimental results were in good agreement with an RMS error of 5-10%. <br/> <br/>Page(s): 884-890 Wed, 28 Sep 2011 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/12685 Title: Effect of biodiesel and its blends with oxygenated additives on performance and emissions from a diesel engine <br/> <br/>Authors: Sivalakshmi, S; Balusamy, T <br/> <br/>Abstract: This study presents effects of diethyl ether and ethanol as additives to biodiesel (neem oil methyl ester) on the performance and emission characteristics of a diesel engine at different loads and constant engine speed. Compared with biodiesel, slightly lower brake specific energy consumption for diethyl ether and ethanol blended biodiesel fuels was observed. At higher engine loads, CO and smoke emissions were found significantly lower with all blends [BD-1 (5% diethyl ether, 95% biodiesel), BD-2 (10% diethyl ether, 90% biodiesel), BE-1 (5% ethanol, 95% biodiesel) and BE-2 (10% ethanol, 90% biodiesel)] compared to biodiesel, but HC and NOx emissions were found higher. <br/> <br/>Page(s): 879-883 Wed, 28 Sep 2011 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/12684 Title: Biodiesels: an alternative renewable energy for next century <br/> <br/>Authors: Prabhakar, S; Annamalai, K <br/> <br/>Abstract: Five non-edible vegetable oils (nerium, jatropha, pongamia, mahua & neem) were selected as alternate fuels and comparison analysis of performance and emission were done. A comparative analysis was done for methyl esters of different oils in blends with diesel of different proportions. It was observed that a diesel engine runs successfully on a blend of 20% biodiesel and 80% diesel fuel without affecting engine performance. Methyl ester from Nerium oil, with properties close to diesel, showed better performance and emission characteristics, followed by esters of jatropha, Pongamia, Mahua and Neem oils. Hence Nerium blend can be used in existing diesel engines without compromising the engine performance. <br/> <br/>Page(s): 875-878 Wed, 28 Sep 2011 22:58:59 GMT http://nopr.niscair.res.in/handle/123456789/12683 Title: Validation and quality assessment of <i>Rasamanikya</i>- A classical herbomineral preparation <br/> <br/>Authors: Gaidhani, Sudesh N; Singh, Arjun; Lagad, C E; Kumari, Suman; Lavekar, G S; Padhi, M M; Sharma, B S <br/> <br/>Abstract: This study presents validation and quality assessment of Rasamanikya, a light, micro fine powder, prepared by processing <i>Patra Haratala</i>, in which powder of <i>Shodhita Haratala</i> (Orpiment- As2S3), sandwiched between two <i>Abhraka</i> (white mica) sheets, is heated for a while to obtain a specific pharmaceutical preparation. Analysis of <i>Rasamanikya</i> was performed through qualitative and quantitative analyses, besides some physico-chemical analysis and other tests such as IR spectroscopy, Raman spectroscopy, EDAX and X-ray diffraction (XRD) to ensure the quality of drug. <br/> <br/>Page(s): 871-874 Wed, 28 Sep 2011 22:58:59 GMT