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8篇 您的检索式:作者名="Venugopal R."
    题名 作者 年代 出处 被引量
1Coal washing scenario in India and future prospects显示文摘R. Venugopal J. P. Patel C. Bhar 2016International Journal of Coal Science & Technology2016,3,2:5
2氧化铝和氧化锆催化剂上2-取代苯并咪唑和1,5-二取代苯并二氮的合成(英文)显示文摘In this study, alumina, zirconia, manganese oxide/alumina, and manganese oxide/zirconia have been investigated for their catalytic activity in the condensation reaction between o-phenylenediamine and an aldehyde or a ketone to synthesise 2-substituted benzimidazoles and 1,5-disubstituted benzodiazepines respectively. Surface area, surface acidity, and morphology of the catalysts have been analysed and correlated with their catalytic activity. The isolated yields of 2-substituted benzimidazoles and 1,5-disubstituted benzodiazepines are in the range of 30% to 95%. A good correlation between the amount of surface acid sites as well as the surface morphology of the catalysts and the catalytic activity has been observed. This method has been found to be simple and economical. The solid supports could be regenerated and reused without much loss in their activity. Further, the solid supports have been also found to be effective as general catalysts in the condensation of o-phenylenediamine with other substituted aldehydes and ketones.M. REKHA A. HAMZA B. R. VENUGOPAL N. NAGARAJU 2012催化学报2012,33,3:2
3Optimization of hot workability in stainless显示文摘S. Venugopal S. L. Mannan Y. V. R. K. Prasad 1992Metallurgical Transactions A1992,,11:1
4Performance analysis of jig for coal cleaning using 3D response surface methodology显示文摘Beneficiation of coal of -4.76 mm + 3 mm size fraction was investigated in a laboratory model Denver jig.Process variables were studied to analyze their effect on the performance of jig in terms of yield and ash content of clean coal. Three-factor three-level Box-Behnken design of experiments with response surface methodology(RSM) was employed to understand the performance behavior of jig. From the study, the bed height was found to be the most significant parameter affecting the yield and ash content of clean coal. It was possible to reduce the ash content from 24.32% in feed to an ash content of 16.55% in clean coal at 2 L/min water flow rate and 10 min jigging time. Influence of operating variables of the jig on responses was presented and discussed in 3D surface plots. The developed model was found to be significant within the range of parameters under investigation with correlation of co-efficient values as 0.99(yield) and 0.98(ash).Kumar Shravan Venugopal R. 2017International Journal of Mining Science and Technology2017,27,2:1
5Recovery of americium from nitric acid solutions containing calcium by different co-precipitation methods显示文摘M. M. Charyulu K. Venugopal Chetty D. G. Phal Veena Sagar SagarD. M. Sagar S. M. Pawar R. Swarup V. V. Ramakrishna V. Venugopal 2002Journal of Radioanalytical and Nuclear Chemistry2002,,:1
6On the modelling of grain size during hot working of stainless steels type AISI 304 and 316显示文摘S. VENUGOPAL S. L. MANNAN Y. V. R. K. PRASAD 1997Journal of Materials Science Letters1997,,2:1
7STUDIES ON THE APPLICATION OF ALKYL PHOSPHORIC ACID ESTER IN THE FLOTATION OF WOLFRAMITE显示文摘K. Srinivas T. Sreenivas N. P. H. Padmanabhan R. Venugopal 2004Mineral Processing and Extractive Metallurgy Review2004,,4:1
8Market-Oriented Grids and Utility Computing:The State-of-the-Art and Future Directions显示文摘J. Broberg S. Venugopal R. Buyya 0,,:1
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