Valdon Redvers Smith
Valdon Redvers Smith, South African plant ecologist (Johannesburg 11 December 1948 – SOME BIBLIOGRAPHY With R. Ochyra, J. Vana & B. Cykowska-Marzencka. Seven liverwort species new or confirmed from Subantartic Prince Edward Island. Herzogia 27(2):397-407, 2014 The terrestrial biological research at the Prince Edward Islands. S.Afr. J. Antarct. Res. 21:118-23, 1991 With D.D. French. Patterns of variation in the climates, soils, and vegetation of some subantarctic and Antarctic islands. S.Afr.J. Bot. 54:35-46, 1988 Production and nutrient dynamics of plant communities on a Subantarctic island. I. Standing crop and primary products of mire-grasslands. Pol. Biol. 7:57-75, 1987 The environment and biota of Marion Island. S.Afr.J. Sci. 83:211-20, 1987 With D.D. French. A comparison between Northern and Southern Hemisphere tundras and related ecosystems. Pol. Biol. 5:5-21, 1985 Seasonal dynamics of standing crop and chemical composition in Marion Island (sub-antarctic) vegetation. PhD thesis, University of the Orange Free State (1985) With M.G. Steyn. Soil microbial counts in relation to site characteristics at a Subantarctic Island. Microb. Ecol. 8:253-66, 1982 With S. Russell. Acetylene reduction by bryophyte-cyanobacteria associations on a Subantarctic Island. Polar Biol. 1:153-7, 1982 With M.G. Steyn. Microbial populations in Marion Island soils. S. Afr.J. Antarct. Res. 10-11:14-8, 1981 The influence of seabird manuring on the phosphorus status of Marion Island (Subantartic) soils. Oecologia 41(1):123-6, 1979 Plant responses to osmotic stress in the coastal zone of Marion Island. S.Afr. J. Antarct. Res. 8:106-13, 1978 Animal-plant-soil nutrient relationships on Marion Island (Subantartic). Oecologia 41:123-6, 1978 Plant ecology of Marion Island: a review. S.Afr. J. Antarctic Res. 8:21-30, 1978 Soil chemistry of Marion Island (Subantartic). S.Afr. J. Sci. 4:174-5, 1978 A qualitative description of energy flow and nutrient cycling in the Marion Island terrestrial ecosystem. Pol. Rec. 18:361-70, 1977 The effect of burrowing species of Procellariidae on the nutrient status of inland tussock grasslands on Marion Island. J.S. Afr. Bot. 42:265-72, 1976 Standing crop and nutrient status of Marion Island (subantartic) vegetation. J.S. Afr. Bot. 42:231-63, 1976 The nutrient status of Marion Island plants and soils. M.Sc. Thesis, University of Orange Free State (1976) HONORS Valdonia Ochyra 2003 (Musci)
Urbano Ernesto Stumpf
Urbano Ernesto Stumpf, Brazilian automobile engineer (Não me Toque, Rio Grande do Sul State 15 January 1916 – 17 May 1998) From German descent Recognized as world’s foremost expert on the practical combustion of alcohol and its blends Demonstrated that main technical advantage of alcohol engines was their high overall performance (38%) Established that in the alcohol gasoline mixture, for a percentage above 20% alcohol modifications to engine would be required to avoid high fuel consumption (1965-70) PATENTS (incomplete list) A specific carburetor for alcohol use PI8106855-7 (1981) Carburetor in plastic body without channels or threads A blow energy generated turbocharger powered by the opening of exhaust valve A system that allows intake gases to escape from an internal combustion engine A device for combined fuel carburation Specific Internal combustion engine for fuels of plant origin Vehicle propulsion simultaneously by Stirling engine and electric motor A 5 cylinder engine with dimensions that obey the golden ratio (1975)
Toppur Seethapathy Sadasivan
Toppur Seethapathy Sadasivan, Indian mycologist and plant pathologist (Madras 22 May 1913 – Chennai 18 August 2001) ACHIEVEMENTS Developed concepts such as competitive saprophytic ability and rhizosphere effect Elucidated the rhizosphere effect in which root exudates promotes the growing and survival of specific pathogens First demonstrated the fungal toxin fusaric acid in vivo leading to name it vivotoxin First to demonstrate fusaric acid in wilting cotton plants First demonstrated that the toxins of the blast fungus induced “green islands” in rice leaf tissues Put forward definitive evidence of ionic imbalance in wilted plants in the form of excessive excretion and enhanced transpiration resulting in loss of potassium and accumulation of divalent cations HONORS Sadasivania Subramanian 1957 (Fungi) LINKS WWW.ias.ac.in/currsci/oct102001/845.pdf
Tomas Suero
Tomás Suero, Argentine geologist (La Plata 10 October 1915 – La Plata 21 August 1963) SOME BIBLIOGRAPHY Compilación geológica de las Sierras Australes de la prov. de Bs. Aires. Lab. Ens. Mat. Invest. Tecnologicas (LEMIT) 1963 Paleogeografia del Paleozoico Superior en la Patagonia (Rep. Argentina). Rev. Asoc. Geol. Arg. 16(1-2), 1961 With P.C. Roque, C. de Ferrariis, A. Mingramm, E.O. Rolleri & L.B. Simonato. Cuencas sedimentarias de la Argentina. Bol. Inf. Petrol. 320, 1960 Datos geológicos sobre el Paleozoico Superior de la zona de Nueva Lubecka y alrededores (Chubut Extraandino). Rev. Mus. La Plata (NS) Geol. 5(30), 1958 Geologia de la Sierra de Pillahuinco (Sierras Australes de la Prov. de Bs. Aires), partidos de Cnel. Pringles y Cnel. Suárez. Lab. Ensayo Mat. Inv. Tecnol. (LEMIT) 2(74), 1957 Reseña general sobre los relieves graníticos de la Patagonia (1955) With P.C. Roque. Descubrimiento del Paleozoico Superior al oeste de Bahía Laura (Terr. Nac. de Santa Cruz) y su importância paleogeografica. Notas Mus. La Plata, Geol. 18(68):157-68, 1955 Las sucesiones sedimentarias suprapaleozoicas de la zona extraandina del Chubut. Rev. Asoc. Geol. Arg. 8(1):37-53, 1953 Descripción geológica de la hoja 36c, Cerro Lotena (Neuquén). Bol. Dir.Nac. Minería 76, 1951 Descubrimiento del Paleozoico Superior en la zona extra-andina del Chubut. Bol. Inf. Petrol. 287:31-48, 1948 Sobre la tectónica del Jurásico Superior y del Supracretácico en los alrededores del Cerro Lotena (Neuquén). Thesis, Museo de La Plata (1943) Excursión didáctica a los territórios patagônicos de Neuquén y Río Negro. Rev. Museo La Plata (NS) p.92-113, 1939 HONORS (Fossil) Sueria Menendez 1965 (Plantae) Sueroacrocrinus Hlebszevitch 2004 (Echinodermata) Sueroceras Riccardi & Sabattini 1975 (Mollusca) Sueroa Gonzalez 2006 (Molusca)
Tiruvenkata Rajendra Seshadri
Tiruvenkata Rajendra Seshadri, Indian phytochemist (Kulitalai, Tiruchirapalli, Tamil Nadu 03 February 1900 – 27 September 1975) ACHIEVEMENTS Published more than 1000 papers Discovered many chemicals from plants Elucidated structures of many compounds such as gossytrin and related pigments, pedicinin, pedicellic acid and related compounds, pedaliine, mangiferine, dalbergine, latifoline, ferreirine and homoferreirine, pongamol, karanjine, auranetine, prudomestine, nepritine, cupressulflavone, thelephoric acid, virensic acid, tingenone, enhydrin, santaline, carajurin, alpha terthienyl methanol and others Obtained total synthesis of gossypetine, quectagenine, khelline, pterocarpine, rotenoids, cyanomaclurine, pedaletine, darmanacanthal and related anthraquinones Between methods developed the technique of O-methylation of phenols using dimethylsulphate, selective demethylation, C-methylation, C-prenylation, the nuclear oxidation, involving removal of a hydroxyl group (1940), nuclear reduction and Elbs-Seshadri oxidation (1947) Developed many reagents and synthetic procedures Developed a way to synthesize flavonoid pedalitin Identified neoflavonoids and suggested the correct biogenetic pathway for them A new group of polyphenols of woods, neoflavonoids. Proc. Annu Session Ceylon Assoc. Adv. Science 22:193-201, 1966 With A.C. Jain & K.R. Sreenivasan. A new synthesis of flavonols of the quercetagenine series With R. Padmasani. New reagents for the synthesis of depsides. Tetrahedron 21:3531-6, 1965. With N, Narasimachari. A new effect of hydrogen bond formation. Proc. Indian Acad. Sciences 27 A: 223-239, 1948. With A.K. Ganguly & P. Subramanian. A convenient method of preparation of cyanidin chloride from (+) catechin and (-) epicatechin. Proc. Indian Acad. Of Sciences 46:25, 1957. Contributed significantly to knowledge of the chemistry of tropical lichens Chemistry Nobel Prize nominee (1966) http://www.ias.ac.in/resonance/Feb2004/pdf/Feb2004ArticleInaBox.pdf
Thawatchai Santisuk
Thawatchai Santisuk, Thai botanist and plant chemist (1944 – DESCRIBED PLANTAE SPECIES Dolichandrone columnaris 1985 (Bignoniaceae) Acer chiangdaoense 1992 (Aceraceae) Wrightia sirikitiae 2001 with Middleton (Apocynaceae) CHEMISTRY Isolated at least 52 new bioactive compounds from plants With Monroe E. Wall & Mansukh C. Wani described calycopterones, a new class of biflavonoids (1994) HONORS Santisukia Brummitt 1992 (Bignoniaceae) Thawatchaia Kato, Koi & Kita 2004 (Podostemaceae)