Zobrazeno 1 - 10 of 22 pro vyhledávání: '"K. S. Varma"'
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Akademický článek
An Empirical Review on Challenges and Approaches in Sentiment Analysis
Autor: P Subbaraju, K. Chandra Sekhar, P.R.S.S.V. Raju, K. Satyanarayana Raju, M. K. S. Varma
Publikováno v: International Journal of Industrial Engineering and Production Research, Vol 31, Iss 2, Pp 317-322 (2020)
Nowadays, data are the food for the digital world. The main rich sources for data generated by social networks such as Twitter, Face book, Instagram, and LinkedIn. The data generated from micro-blogging services are plays a vital role in business int
Externí odkaz: https://doaj.org/article/894eb3c2bf934f60a04413374710491e
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2
Purification of cadmium up to 5N+ by vacuum distillation
Autor: J. V. Rao, T. L. Prakash, K. S. Varma, S. T. Ali
Publikováno v: Bulletin of Materials Science. 25:479-481
Cadmium was refined by vacuum distillation, a technique suitable for low boiling and melting point materials, to remove the heavy and low vapour pressure impurities at ppm level. The detailed analysis of the purified Cd as well as raw Cd was done by
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9639804e93981dc91c3bddea226af57b
https://doi.org/10.1007/bf02710532
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3
ChemInform Abstract: New Macrocycles of Carbon, Nitrogen and Sulfur Atoms Incorporating 4,5- Dithio-1,3-dithiole-2-thione Units
Autor: Jan Becher, Thomas K. Hansen, Peter Roepstorff, Jeremy D. Kilburn, A. E. Underhill, K. S. Varma, B. Girmay
Publikováno v: ChemInform. 23
Condensation of 2-thioxo-1, 3-dithiole-4,5-dithiolate dianion, generated in situ from 4,5-bis-(benzoyl-thio)-1,3-dithiole-2-thione, with 4,4′-bis(bromomethyl)-2,2′-bi-1,3-thiol gives a mixture of macrocyclic compounds 3, 4, 5 and 6 while only the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35356435241b8f28754dd71534bcc484
https://doi.org/10.1002/chin.199219233
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6
ChemInform Abstract: New Symmetrical and Unsymmetrical Tetrathiafulvalene π-Donors Containing the Dithiinoquinoxaline Ring System
Autor: Jan Becher, Gustav Bojesen, Stephen Edge, K. S. Varma, A. E. Underhill
Publikováno v: ChemInform. 21
2,3-Dichloroquinoxaline when treated with the multi-sulphur dithiolate (1) gave the thione (2), which was coupled using neat triethyl phosphite to give the bisquinoxalinodithiin-fused tetrathiafulvalene, BQDT-TTF (3). Cross-coupling of thione (2) wit
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2e31942b55c6a2d984321a573d466e2d
https://doi.org/10.1002/chin.199052214
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9
New macrocycles of carbon, nitrogen and sulfur atoms incorporating 4,5-dithio-1,3-dithiole-2-thione units
Autor: Jan Becher, A. E. Underhill, Jeremy D. Kilburn, K. S. Varma, B. Girmay, Thomas K. Hansen, Peter Roepstorff
Publikováno v: Journal of the Chemical Society, Perkin Transactions 1. :383
Condensation of 2-thioxo-1, 3-dithiole-4,5-dithiolate dianion, generated in situ from 4,5-bis-(benzoyl-thio)-1,3-dithiole-2-thione, with 4,4′-bis(bromomethyl)-2,2′-bi-1,3-thiol gives a mixture of macrocyclic compounds 3, 4, 5 and 6 while only the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::300498585d8b66f9def72cd0e644c9d3
https://doi.org/10.1039/p19920000383
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