2,774 research outputs found
Bibliographics for the 983 eprints in the live archives of E-LIS : trends and status report up to 7th July 2004, based on author-self-archiving metadata
No full textThe priority for ideas and philosophy related to "Network Theory" have been traced back and documented by Braun(2004),and credit goes to Karinthy(1929).The IT has empowered to realise it, as the most practical phenomena and it is no more a humour. The OAI (Open Archives Initiatives)and ACIS (Academic Contributor Information System)are progressive in the direction ,which may lead to realise the "Collective Genius" at global level. Focus of present study is on Author-Self-Archiving (A-S-A)Metadata of the 983 Eprints in the Live Archives of the E-LIS (EPrints of Library and Information Science),which were approved till 7th July 2004.The A-S-A Metadata was used for librametric analysis. Self-explanatory bibliographics are illustrated.The highlights include: Conference papers (34%); highest approval, June 2004 (28%); published archives (76%);not refereed (52%); not in public domain (60%); highest self-archiving-author (De Robbio, Antonella).The Nos. of EPrints having single JITA domain specifications were: Theoretical and general aspects of libraries and information(27); Information use and sociology of information(80);Users,literacy and reading(13);Libraries as physical collections(30);Publishing and legal issues(57);Management(13);Industry, profession and education(36);Information sources, supports, channels(113) ; Information treatment for information services, Information functions and techniques (101); Technical services libraries, archives and museums(25); Housing technologies(1); Information technology and library technology(92); and Inter-domainery (395) i.e. having specifications of two or more than two JITA classes
Mapping of literature on Bose – Einstein condensation
No full textThis paper attempts to highlight quantitatively the growth and development of research work in this field on Bose-Einstein Condensation (BEC) in terms of publication output as per Science Citation Index (1982-2005). During 1982–2005 a total of 5258 papers were published by the scientists in this field. The average number of publications published per year were 219. The highest number of papers 814 were published in 2004. There were 77 countries involved in the research in this field. USA is the top producing country with 1632 publications (31%) followed by Germany with 620 publications (11.79%). Authorship and collaboration trend was towards multiauthored papers. Intensive collaboration was found during 1996-2005. One paper “Astrophysical Journal 543 (1), (2000), L39-L42” had 56 collaborators. There were 1635 international collaborative papers. Bilateral collaboration accounted for 24 percent of total collaborative papers. National Institute of Standards & Technology (USA) topped the list with 179 publications followed by University of Colorado (USA) with 160 publications. The most prolific authors were: W. Ketterle (USA) with 93 publications, K. Burnett (England) and M. Lewenstein (England) with 68 publications each and S. Stringari with 57 publications. The most preferred journals by the scientists were : Physical Review- A with 1504 papers, Physical Review Letters with 824 papers, Journal of Physics-B with 205 papers, Physical Review- B with 178 papers, Physics Letters-A with157 papers, Physical Review –E with 122 papers and Journal of Low Temperature Physics with 102 papers. The high frequency keywords were : Bose-Einstein Condensation (2012), Gases (1928), Atoms (860), and Dynamics (493)
Indian Science & Technology Research: A scientometric Mapping Based on Science Citation Index
No full textThis paper attempts to analyse quantitatively the growth and development of Science and Technology research in India in terms of publication output as reflected in Science Citation Index (SCI) (1990-2004). Total of 182111 papers were published by the Indian scientists and engineers to various domains: Chemical Sciences (62856) (34.52%), Physical Sciences (53844) (29.57%), Medical Sciences (30143) (16.55%), Biological Sciences (18239) (10.02%), Multidisciplinary Sciences (8616) (4.73%), Agricultural Sciences (5461) (3.00%) and Geological Sciences (2952) (1.62%). The study also focused on the visualization of Indian contribution to various micro-domains: Chemistry-Multidisciplinary (10800), Organic Chemistry (10362), Materials Science-Multidisciplinary (8107), Multidisciplinary Sciences (7771), Physics-multidisciplinary (7112), Condensed Matter Physics (6938), Physical Chemistry (5931), and Biochemistry & Molecular Biology (5307). A total of 168 micro-domains were identified in which the scientific research in India is concentrated. A steady growth of publications was observed. The average number of publications per year were 12140.73. The highest number of publications (15414) were published in 2003. Single authored papers were 18224 (10%) and Multi-authored papers were 163887 (90%). Authorship and collaboration trend was towards multi-authored papers. Five hundred fifty nine papers had more than 100 authors each. There were 371 papers with 255 authors each and 51 papers with 225 authors each. Intensive international collaboration was found during the period and bilateral collaboration accounted for 13.67 percent of the total 31186 collaborative papers followed by trilateral collaboration with 2.27 percent. India had collaboration with 167 countries. The highest number of papers collaborated were 11869 with USA followed by 4640 papers with Germany, 3202 papers with England and 2988 papers with Japan. A comparative publication productivity between India and Peoples-R-China has been carried out. India was ahead of Peoples-R-China till 1996. Peoples-R-China out paced India in 1997. The highly productive Indian Institutes were: Indian Institute of Science, Bangalore with 10247 publications, Bhabha Atomic Research Centre, Mumbai with 6782 publications, Tata Institute of Fundamental Research, Mumbai with 5132 publications and Banaras Hindu University, Varanasi with 4487 publications. The most preferred journals by the scientists were: Current Science (6848), Indian Journal Chemistry-B (3566), Indian Journal Chemistry-A (3272) and Pramana (1904)
Scientometric Portrait of Homi Jehangir Bhabha: The Father of Indian Nuclear Research Programme
No full textQuantitative and qualitative analysis with graphic representation of the publication productivity of a scientist facilitates easy and clear perception about the work of a scientist. Bhabha’s scientific work spanned over more than three decades (1933-1967) during which he published 104 publications, which could be classified into nine fields: Interaction of Radiation with Matter (4), Quantum Electrodynamics (5), Mathematical Physics (2), Cosmic Ray Physics (18), Elementary Particle Physics (14), Field Theory (15), General Physics (2), Nuclear Physics (4) and General (40). The highest number of publications (6) were published in 1941, 1945 and 1964 respectively. The average number of publications published per year was 3.05. His productivity coefficient was 0.05 which is a clear indicates that his publication productivity was quite consistent throughout his scientific career. He was single author in 79 of his publications and the main author in 24 publications indicates that he always preferred to work himself and lead the team as ‘mentor’. Bhabha had 22 collaborators during the period. Team of research collaborators working with a successful scientist documents the sociological aspect of history of science while generating knowledge by a leader in a domain.
Bhabha became a citable author in 1937. Bhabha received 1211 citations to his 30 publications out of 104 publications. Out of 104, 74 publications did not receive any citations. Out of 74 publications, 40 publications dealt subjects mainly of general interest. Bhabha’s 86.66 percent of cited publications received their first citations within four years of their publication indicates that his publications were noticed immediately and had direct impact among the fellow researchers working all over the world. His overall citation rate was 11.64 per cited publication. The highest citations 389 were received to the domain ‘Cosmic ray physics’. The highest number of citations received were 45 in 1938. His self-citations were only 24 (1.98%) and citations by others were 1187 (98.02%). The highest self citations were six in 1946. Bhabha’s mean diachronous self-citation rate was 1.98. The highest citation rate 28.4 was to the domain ‘Quantum electrodynamics. His single authored publications have received the highest number 863 (71.26%) of citations. Bhabha’s five publications have been cited more than 100 times each. His publications have been cited by the authors working in various diverse fields like nuclear physics, mathematical physics, instrumentation, optics, geophysics and geochemistry, condensed matter physics, applied physics, electrical and electronic engineering, mechanical engineering etc., indicating a very diverse influence and impact of Bhabha’s publications. Bhabha’s publications have also been cited by the Nobel laureates like V. L. Ginzberg, Wolfgang Pauli, H. A. Bethe, M. Born, W. Bothe, E. P. Wigner, H. Yukawa, P. M. S. Blackett and C. N. Yang which is an indication of his originality of ideas and high quality of publications
Scientometric dimensions of thorium research in India
No full textThis paper attempts to provide detailed quantitative analysis of Indian contributions on thorium in terms of publications output as per International Nuclear information System database during 1970-2004. A total of 2399 papers were published by the Indian scientists in the field of thorium. There were only nine publications in
1970. Thereafter, a steady growth was observed except for the period 1983-1985. The highest papers (188) were! published in the year 2000. USA with 8049 (28.05 per cent) and India with 2399 (8.30 per cent) publications were the top two countries who published work on thorium. Authorship and collaboration trend was towards multi-authored papers as 85.70 per cent of the papers were collaborative. There
were 79 international collaborative papers. Bilateral collaboration accounted for 90.14 per cent of total collaborative papers. Bhabha Atomic Research Centre, Mumbai
topped the list with 1251 authorships followed by Indira Gandhi Centre for Atomic Research, Kalpakkam with 168, Atomic Minerals Division, Hyderabad with 71, Utkal
University, Bhubaneswar with 43 and Saha Institute of Nuclear Physics, Kolkata with 31 authorships, respectively. The journals most preferred by the scientists for
publication of papers were: Journal of the Indian Chemical Society with 78 papers, followed by the Indian Journal of Chemistry A with 60 papers, Bulletin of Radiation
Protection with 56 papers, Journal of Radio Analytical and Nuclear Chemistry with 54 papers, Radiation Protection and Environment with 37 papers, Exploration and Research for Atomic Minerals and Journal of Geological Society of India with 35 papers each. English was the most predominant language used by the scientists for communication. The high frequency keywords were: thorium (559), uranium (316),
thorium oxides (269), India (257), solvent extraction (236), quantitative chemical analysis (221) and thorium 232 (202)
Sida ravii Sivad. & Anil Kumar (Malvaceae) a new record from Tamilnadu, India
No full textSida ravii Sivad. & Anil Kumar, (Malvaceae) is an undershrub is reported first time for Tamil Nadu from the Pachchaimalai hills of Eastern Ghats, India. A detailed description and illustration of the species are provided here for the easy identification. </div
Structural and 13C NMR Studies on Palladium MOP Compounds: A New Weak C-Pd -Bond Plus MOP as a Bridging Diene Ligand
No full textA new set of Pd-MOP complexes (MOP = (S)-2-diarylphosphino-1,1′-binaphthyl) has been prepared. One of these, containing MeO-MOP (=2-(diphenylphosphino)-2′-methoxy-1,1′-binaphthyl), is shown to act as a chelating ligand with a naphthyl backbone diene bridging a Pd(I)-Pd(I) bond. This bonding mode exists in both the solid and solution states. A series of chloro-Pd(II)MOP complexes containing the well-known cyclometalated N,N- dimethyl benzylamine chelate have been treated with NaBArF to extract the chloride ligand. The products, starting from the H-MOP, MeO-MOP, and NC-MOP analogues, are all different. Of particular interest is the product from the H-MOP reaction in that the fourth coordination position is occupied by a weak Pd-C a-bond from the naphthyl backbone, on the basis of 13C NMR data. The rate of product formation in the Pd-catalyzed hydrosilylation of styrene with SiHCl3 has been measured as a function of time for the four auxiliaries H-MOP, MeO-MOP, HO-MOP, and NC-MOP. The NC-MOP is shown to be much faster than the others, and a tentative explanation is offered
Bonding in palladium(II) and platinum(II) allyl MeO- and H-MOP complexes. Subtle differences via C-13 NMR
No full textC-13 NMR studies have shown that in both Pd(II)- and Pt(II)-allyl (modified-MOP) (MOP = (S)-2-diarylphosphino-1,1'-binaphthyl) complexes the substituent on the MOP auxiliary can affect how the naphthyl backbone interacts with a metal center. With the MeO-MOP analogue, the metal binds the carbon in a weak eta(1)-fashion, whereas with H-MOP it prefers an eta(2)-binding mode. For the Pt complexes, the (1)J(Pt-195,C-13) values proved to be diagnostic tools. Both modes of bonding afford relatively weak bonds to the metal. Modifying the MOP ligand structure from a PPh2 to a P(3,5-di-tert-butylphenyl)2 analogue can markedly affect the bond distances within the coordination sphere, as indicated by the X-ray structural data for PdCl(eta(3)-C3H5)(modified-MOP). 2-D NMR exchange spectroscopy can be used to recognize and distinguish between the two most common types of eta(3)-eta(1)-eta(3) isomerization process, i.e., rotation around the allyl C-C bond versus rotation around the allyl M-C bond. For the complex PdCl(eta(3)-C3H5)(H-MOP), the fastest isomerization process involves rotation around the allyl C-C bond
3,5-Dialkyl Effect on Enantioselectivity in Pd Chemistry: Applications Involving Both Bidentate and Monodentate Auxiliaries
No full textThe structural 3,5-dialkylphenyl effect on enantioselectivity is demonstrated for several Pd-catalyzed reactions including a ring-opening transmetalation, Heck arylation, and allylic alkylation. For these homogeneously catalyzed reactions the observed enantiomeric excesses (ee's) are found to improve by more than 15%. The ligands tested include MeO-Biphep and a P,N-phosphino-oxazoline-bidentate ligand containing 3,5-di-tert-butylphenyl substituents. Further, several derivatives of the monodentate auxiliary MOP (CR)-2-diarylphosphino-1,1′-binaphthyl) have been modified to include 3,5-dialkylphenyl substituents and these auxiliaries have been tested in Pd-catalyzed enantioselective hydrosilylation chemistry. For some, but not all of these MOP ligands, enhanced ee's of the order of 40-50% are found. Variable-temperature and 2-D NMR studies have been carried out on new model complexes and reveal selected restricted rotation around a number of the P-C(ipso) aryl bonds. Solid-state structures for two of the new complexes, PdBrCp-NCCeHUXphosphino-oxazoline, 2b), 8b, and PdCl(C 6H 4CH 2NMe 2)(MOP, 4b), 9b, have been determined
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No full textNot AvailableThe causal organisms of yellow mould diseases encountered in seasonal button mushroom farms were
found to be , and . Although all these Myceliophthora lutea Sepedonium chrysopermum S. maheshwarianum
yellow mould causing organisms were found to reduce the mushroom yield, but was the most M. lutea
devastating fungus causing complete crop failure depending upon the stages of the infection. When M. lutea
was inoculated at spawning it caused 100 crop loss whereas if inoculated at casing it caused 42 per cent per
cent loss. In case of and they caused 75-80 crop losses, at S. chrysopermum S. maheshwarianum per cent
spawning and 27 at casing. Under seasonal conditions, casing is normally chemically pasteurized per cent
and causes the problems of fungicidal residue in the mushrooms. As an alternative, solarised casing soil
showed drastically reduced fungal counts in comparison to control and also the dominant fungi encountered
in solarised casing were mainly thermotolarent. It was also observed that addition of 0.5 phosphate per cent
gave 98 increase in yield in comparison to untreated inoculated control and 33 over per cent per cent
untreated un-inoculated control. It was observed that the disease could not establish in any of the treated
bags. It was also found that maximum growth inhibition was of test fungi were attained with extract of
Cannabis sativa A. bisporus without affecting the growth of when added in malt extract agar medium @ 5
per cent. It can be concluded from the present investigations that to minimize that cost involved in steam
pasteurization, solarisation of casing soil may be a good alternative along with addition of P O (0.5%) in 2 5
compost to prevent crop losses due to yellow mould syndrome. Moreover, Cannabis sativa also showed
anti-fungal activity against yellow mould pathogens, therefore they may be recommended to the mushroom
growers for the management of yellow mould syndrome in white button mushroom.Not Availabl
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