Entity

Time filter

Source Type

North Bethesda, United States

Gupta B.M.,National Institute of science
Annals of Library and Information Studies | Year: 2011

Analyses the ranking of the India's productive institutions in agricultural sciences, based on the basis of various quantitative indicators, such as the total number of papers and international collaborative papers and qualitative indicators, such as the average number of citations per paper and h-index value, and also in terms of a new composite indicator, which combines quantitative and qualitative aspects. Many institutions changed their ranking positions, when their ranking based on mean citation rate and h-index was compared with their ranking based on the composite indicator. Concludes that the ranking based on composite indicator gives much better results than other indicators as it combines both quantity and quality aspects. Source


Kaur H.,Medical College and Hospital | Gupta B.M.,National Institute of science
Scientometrics | Year: 2010

The study examines India's performance based on its publication output in dental sciences during 1999-2008, based on several parameters, including the country annual average growth rate, global publication share & rank among 25 most productive countries of the world, national publication output and impact in terms of average citations per paper, international collaboration output and share and contribution of major collaborative partners, contribution and impact of select top 25 Indian institutions and select top 15 most productive authors, patterns of communication in national and international journals and characteristics of its 45 high cited papers. The study uses 10 years (1999-2008) publications data in dental sciences of India and other countries drawn from Scopus international multidisciplinary bibliographical database. © 2010 Akadémiai Kiadó, Budapest, Hungary. Source


Gupta B.M.,National Institute of science | Bala A.,Government Medical College and Hospital
Lung India | Year: 2011

Objective: This study analyzes the research output of India in asthma during the period from 1999 till 2008. It analyzes the growth, rank and global publications share, citation impact, share of international collaborative papers, contribution of major collaborative partner countries and contribution of various subject fields. It also analyzes the characteristics of most productive institutions, authors and high-cited papers. Materials and Methods: SCOPUS database has been used to retrieve the data on publication output in asthma research. Results: India ranks 15th position among the top 23 countries in asthma research, with its global publication share of 1.27% (862 papers), registering an average citation per paper of 3.43 and achieved an h-index of 33 during 1999-2008. Conclusion: Indian research output on asthma is quite low in the global context as reflected from its publication output per thousand population (0.001) and its world publication share (1.27%) during 1999-2008. Also, the impact and quality of Indian research is low compared to select developed and developing countries. Source


Conifer C.,RWTH Aachen | Gunanathan C.,National Institute of science | Rinesch T.,RWTH Aachen | Holscher M.,RWTH Aachen | Leitner W.,RWTH Aachen
European Journal of Inorganic Chemistry | Year: 2015

Upon the simple addition of substrates, the ruthenium pincer complex [Ru(tBuPNP)(H2)(H)2] [1; tBuPNP = 2,6-bis(di-tert-butylphosphinomethyl) pyridine] is an active and selective catalyst system for the hydrosilylation of terminal alkyl alkynes under mild, solvent-free conditions. The reactivity of this system for other functionalized terminal alkynes was also investigated, and we observed competing catalytic cycles that produce both alkyne dimers and dehydrogenative silylation products. Kinetic measurements for the hydrosilylation of 1-octyne show that the catalyst has an initial turnover frequency of 121 h-1 at room temperature. The stoichiometric reaction between 1 and H2SiPh2 yields [Ru(tBuPNP)(H)2(H2SiPh2)], which undergoes Si-H bond activation to yield the catalytically active species [Ru(tBuPNP)-(HSiPh2)(H)]. The reaction of 1 with phenylacetylene yielded [Ru(tBuPNP)(H)2(HC≡CPh)] and [Ru(tBuPNP)(H)(C≡CPh)-(HC≡CPh)], and we propose that the latter is the active species in the dimerization reaction. © 2015 Wiley-VCH Verlag GmbH & Co. KGaA. Source


Gupta B.M.,National Institute of science | Bala A.,Government Medical College and Hospital
Journal of Vector Borne Diseases | Year: 2011

Objective: This study analyses the research output of India in malaria research in national and global context, as reflected in its publications output during 1998-2009. Methods: SCOPUS Citation database has been used to retrieve the publication data, which has been further analyzed on several parameters including its growth, rank and global publications share, citation impact, overall share of international collaborative papers and share of major collaborative partners and patterns of research communication in most productive journals. The publications output, impact and collaborative publication share of India is also compared with South Africa, Brazil and China. Results: Indian scientists together have published 2786 papers in malaria research during 1998-2009 and registered an average citation per paper of 3.49. The country ranks 4th among the top 20 most productive countries in malaria research with its global publications share of 6.47% during 1998-2009. Conclusion: Quantum of Indian research output in malaria research is high but its citations per paper is low compared to select developing countries, which can be improved by investing more funds in international and national collaborative research projects, as well as increasing the participation of researchers in such projects. Source

Discover hidden collaborations