Vallurupalli Sita Raghavendra Rao
Vallurupalli Sita Raghavendra Rao, Indian biophysicist (01 February 1931 – 26 September 2013) Authored over 150 articles Authored the book Conformation of Carbohydrates, only one of its kind (1988) First to develop methods for investigating the structure of oligosaccharides and long-chain polysaccharides by using the idea of dihedral angles and of the bonds meeting at the bridge oxygen Showed that random coil conformation of amylose is comprised of largely left-handed helical segments interspersed with short right handed helical segments Explained how lectins recognize the subtle configurational differences in saccharides Gave important contributions to stereochemistry of pyranose sugars and their derivatives that were widely referred Important studies on cell wall polysaccharides and the action of antibiotics (beta-lactam compounds) LINKS www.currentscience.ac.in/Volumes/105/09/1303.pdf
Ulises Rojas
Ulises Rojas Benfeldt, Guatemalan physician and naturalist (San Marcos 29 March 1881 – Ciudad de Guatemala 16 June 1959) Authored 115 works SOME BIBLIOGRAPHY Curso de zoologia (1911) Manual de horticultura, jardineira y arboricultura (1933) Elementos de Botanica General Curso completo de anatomia y fisiologia humana Hibridaciones sobre Euchlaena mexicana Schrad., Teocinte Las plantas y sus productos HONORS Rojasianthe Standley & Steyermark 1940 (Asteraceae)
Tiruppattur Venkatachalamurti Ramakrishnan
Tiruppattur Venkatachalamurti Ramakrishnan, Indian theoretical physicist (Tamil Nadu 14 August 1941 – Authored 150 research publications and 3 books (until 2012) PRESENTED NEW THEORIES With M. Yussouff introduced the density functional theory of freezing (1990) With K. Sur presented a perturbation theory for the thermodynamic properties of a mixed-valent impurity in a metal (1982) Density-wave theory of first-order freezing in two dimensions (1982) With E. Abraham, P.W. Anderson & D.C. Liciardello. Scaling theory of localization: absence of quantum diffusion in two dimensions. Phys. Rev. B22:3519, 1979 With M. Yussouff. First-principles order-parameter theory of freezing. Phys. Rev. B19:2775, 1979 With M. Yussouff. Theory of the liquid-solid transition. Solid State Comm. 21:389, 1977 OTHER CONTRIBUTIONS With B. Banerjee, S. Balasubramanian, G. Ananthakrishnan et al found the existence of bimodality during the progression of cell cycles (2004) With R. Gupta, G. Venketeswara, A.K. Sood & C.N.R. Rao first saw the anomalous temperature dependence of phonon lineshapes in charge-ordered manganites (2002) Suggested a novel localizing phenomenon in doped manganites (1998) With B.K. Chakraverty gave a simple universal criterion for behavior prediction of oxide superconductors (1997) With K. Sheshadri, H.R. Krishnamurthy & R. Pandit suggested a new physical picture for the superfluid Bose glass transition (1995) With K.V.R. Varma, G.N. Subbama & C.N.R. Rao discovered novel dielectric properties of glasses prepared by quenching melts of Bi-C-Sr-Cu-O cuprates (1989) With M. Raj Lakshmi and H.R. Krishnamurthy first to calculate the dislocation structure within the framework of an order-parameter theory and incorporating thermal effects in it (1988) With P. Coleman & P.W. Anderson showed that large anomalous Hall constants of mixed valent and Kondo lattice systems can be understood in terms of a simple resonant level Fermi liquid model (1985) With P.W. Anderson & K.A. Mutalib proposed that superconducting critical temperature decreasing similarly with disorder for all systems with high critical temperature is a localization effect (1983) With E. Abrahams, P.W. Anderson & P.A. Lee calculated the electron quasiparticle lifetime in a disordered metal due to electron-electron scattering (1981) With P.W. Anderson & E. Abrahams introduced the idea of an incoherence length L2 at which inelastic collision broadening equals electronic energy-level separation (1979) Presented a many body theoretical method for calculating the effect of low energy fluctuations on the dynamic susceptibility (1974)
Thirumalachari Ramasami
Thirumalachari Ramasami, Indian leather chemist (Kolkata 15 April 1948 – Authored over 240 papers ACHIEVEMENTS Developed innovative technologies and without international equivalents Developed technologies for improved tanning salts and systems for leather field Significantly advanced the understanding of the factors controlling the reactivity and applications of chromium compounds in biological matrices such as chromium induced apoptosis of human lymphocytes Successfully related assemblies and long-range ordering phenomena in biosystems to the functional properties Demonstrated stabilization of unusual oxidation states of chromium Demonstrated anomalous reactivity of chromium III PATENTS (41; incomplete list) With U.S. Kasiviswanathan, N.M. Devasikhamani, K.A. Kalai, A.K. Johnson, V. Arummugan, R. Sanjeevi & A.M. Baran. Detachable mrudangam IN2013DE00804A (2013) With B. Unni Nair, J. Raghava Rao, J.K. Sreeram, R. Natraj, R. Aravindhan & S. Saravanabhavan. Tanning composition for tanning leather, contains biopolymer chosen from sodium alginate, starchh and/or carrageenan, protein hydrolysate, sodium metabisulfite and acrylic/metacrylic, each in specified range DE102007051378A1 (2007) With R. Natraj, S. Saravanabhavan, R. Aravindhan, S.J. Kalarical, J.R. Rao & B.U. Nair. Process for the preparation of synthetic tanning agent for improved leather characteristics US20080229511A1 (2007) With P. Thanikaivelan, S. Saravanabhavan, J.R. Rao, B. Chandrasekaran & B.U. Nair. An improved process for dehairing and fibre opening of hide/skin WO2008093353A1 (2007) With S.S. Nilegaonkar, U.P. Zambare, P.P. Kanekar, P.K. Dhakephalkar, S.S. Sarnaik, N.K.C. Babu, B. Ramaniah, R. Rajaram, Y.K. Saikumari & P. Balaram. Novel protease for industrial applications US20080220499A1 (2007) IN2006DE02471A (2006) With K.J. Sreeram, H.Y. Srivastava, B. Unni Nair & U.V. Varadaraju. Nano sized sulfide compounds of cerium and a process for the preparation thereof US7247291B2 (2006) With S. Saravanabhavan, P. Thanikaivelan, J. Raghava Rao, B. Unni Nair & C. Bangaru. Process for the preparation of bio-tanning agent CA2592856C (2004) US20060137103A1 (2004) With S. Saravanabhavan, P. Thanikaivelan, J. Raghava Rao & B. Unni Nair. Bio-tanning process for leather making US7651531B2 (2004) WO2006067801A1 (2004) With K.J. Sreeram & B. Unni Nair. Process for preparation of inorganic colorants from mixed rare earth compounds US7279036B2 (2004) WO2006067799A1 (2004) With M. Chandrabose, N.N. Fathima, K.J. Sreeram, J.R. Rao & B.U. Nair. Process for making wet-pink leather US7252687B2 (2004) WO2006067540A1 (2004) With S. Saravanabhavan, P. Thanikaivelan, J.R. Rao, B. Chandrasekaran & B.U. Nair. Transposed process for making leather US7033402B2 (2004) With S. Kalarical. A process for simultaneous recovery of chromium and iron from chromite ore processing residue WO/2004/040027 (2004) IN1093DE2002A (2002) With M. Kanthimahi, P. Thanikaivelan, J. Raghava Rao & B. Unni Nair. Process for the preparation of a formaldehyde-free synthetic tanning agent US7118603B2 (2003) With M. Kanthimahi, B. Unni Nair, J. Raghava Rao & P. Thanikailevan. A process for the preparation of a synthetic tanning agent EP1656460B1 (2003) With D. Lakshmanan, B. Thangaraj, S. Krishnan, N. Samivelu & P.G. Rao. Device for leather processing US6935144B2 (2003) EP1470260B1 (2003) DE60325017D1 (2003) With S. Saravanabhavan, P. Thanikailevan, J.R. Rao & B.U. Nair. Dehairing and fiber opening process for complete elimination of lime and sodium sulfide US6957554B2 (2003) With B.U. Nair, J.R. Rao & P. Thanikailaven. A novel ecofriendly bio-process for leather processing AU2003274440B2 (2003) With M. Kanthimahi, B. Unni Nair, J. Raghava Rao & P. Thanikaivelan. Process for preparing a synthetic aluminium tanning agent AU2002348767B2 (2002) US7169191B2 (2003) With S. Saravanabhavan, P. Thanikaivelan, J. Raghava Rao & B. Unni Nair. A lime sulphide-free dehairing and fibre opening process WO2005049871A1 (2003) With P. Mukundan, P. Peruman, B.G.S. Prasad, A.H. DeVries, J. Van der Zwan & J.A.M. Denissen. A process for the preparation of tiles/bricks useful for building construction IN190757B (1995) With K.V. Srinivasan, L. Vijayalakshmi, K.C.B. Narasimhan & G. Thyagarajan. A process for the preparation of water soluble methacrylic acid based copolymers IN186398B (1993) With Y. Lakshminarayana, K.S.Y. Srinivasan, N. Radhakrishnan, S. Ramalingam, K. Parthasarathi, K. Subramanyam, Jayaraman & K.T. Joseph. A process for the preparation of a new water dispersable acrylic copolymer having molecular weight less than 10,000 IN178232B (1989) With S. Ramalingam, K.S. Jayaraman, G. Thyagarajan, K.S.Y. Srinivasan & K.T. Joseph. A process for the preparation of soft acrylic emulsion for use as binder for leather finishes IN167620B (1986) LINKS www.insaindia.res.in/detail/P05-1397
Theodoro Augusto Ramos
Theodoro Augusto Ramos, Brazilian mathematician and engineer (São Paulo 26 June 1895 – Rio de Janeiro 05 December 1937) Proposed representation of two-variable sum functions by Weierstrass double integral Sobre as funcções de variáveis reaes. Doctoral thesis, Escola Politécnica do Rio de Janeiro (1918) Explained hydrogen spectrum bands using Relativity Theory independent from Sommerfeld A theoria da Relatividade e as Raias Espectraes do Hydrogenio. Revista Polytechnica 74:181-88, 1923 Sobre a estrutura do Espectro das raias do Hydrogenio. Revista Polytechnica 78-9:503-7, 1923 His work Integrais definidas das funções discontínuas (1926) received a laudation from French mathematician Emile Borel Established a necessary and sufficient condition for which is finite the corresponding potential to a mass distribution with quasi-periodic characters A propósito das notas dos srs. Borel e Amoroso Costa. Rev. Acad. Bras. Sci. 1:74-5, 1926 His book Leçons sur Le Calcul Vetoriel (1930) was regarded as a valuable didactic work from European circles and in particular from Italian mathematician Tullio Levi-Civita SOME BIBLIOGRAPHY Nota sobre as curvas esphericas reversas. Rev. Did. Escola Polit. Rio de Janeiro 12:75-8, 1918 Nota sobre uma formula de interpretação. Rev. Did. Escola Polit. Rio de Janeiro 14:65-70, 1918 Sobre um problema de estabilidade. Rev. Bras. Eng. 4(5):265-70, 1922 Applicação do calculo vetorial ao estudo do movimento de um ponto material sobre uma superfície rugosa e fixa em um meio resistente. Annaes Acad. Bras. Sci. 5(4):175-200, 1933 Algumas propriedades de uma integral hyperelliptica. Annaes Acad. Bras. Sci. 4(3):123-4, 1934
Thekkepat Ramakrishnan
Thekkepat Ramakrishnan, Indian biochemist (Bangalore 14 March 1922 – Bangalore 15 February 2008) Elucidated the metabolism and molecular biology of Mycobacteria Elucidated the mechanism of action of antitubercle drugs like isoniazid, streptomycin and rifampicin First reported the enzyme isocitrate lyase Isolated the first transducing phage for Mycobacteria Proposed RNA polymerase of Mycobacterium tuberculosis as a good target for devising new drugs