Gilberto Francisco Loibel
Gilberto Francisco Loibel, Brazilian mathematician (São Paulo 24 May 1932 – São Paulo 13 November 2013) Son of German immigrants Authored Loibel theorem Multiplications on products of spheres. An. Acad. Bras. Ciencias 31:161-2, 1959 Introduced the concept of finite relative determination With P.F.S. Porto Jr. Relative finite determinacy and Relative Stability of Function Germs. Bol. Soc. Bras. Mat. 9(2), 1978. With R.C.E. Pinto proved that c-equivalence lies strictly between d-equivalence and b-equivalence (1982)
Geraldo Amadeo Lamas
Gerardo Amadeo Guillermo Lamas Muller, Peruvian entomologist (Lima 29 May 1948 – With R. Rojas, L. Caviedes, J.C. Aponte, A.J. Vaisberg et al. Aegicerin, the first oleanane triterpene with wide-ranging antimycobacterial activity, isolated from Clavija procera. J. Nat. Prod. 69(5):845-6, 2006 Butterfly genome reveals promiscuous exchange of mimicry adaptations among species. Nature 487(7405):94-8, 2012 Species can be named from photos. Nature (2016) DESCRIBED LEIDOPTERA TAXA Genera Brevioleria 2004 Haenschia 2004 Myserla 2017 Oiticicastnia 1995 Pachacutia 2007 with Willmott Paititia 1979 Species About 140 Subspecies About 175 HONORS (Lepidoptera) Lamasa Johnson 1992 Lamasina Robbins 2002
Gerald Cecil Lalor
Gerald Cecil Lalor, Jamaican physical-chemist (Kingston 15 December 1930 – CONTRIBUTIONS With S.L. Martin. Studies on haematoxylin and haematein, the colouring principles of logwood. I. Absorption spectra of pure compounds in various solvents and a spectrophotometric method of analysis for haematoxylin and haematein. J. Soc. Dyers Colour. 75 (11):513-7, 1959 Developed a method for measuring the absorption spectra of both compounds in aqueous solutions under conditions which minimize the risk of oxidation. With S.L. Martin. Studies on haematoxylin and haematein, the colouring principles of logwood. II. Behaviour in aqueous solutions at varying pH, and the pK values. J. Soc. Dyers Colour. 75:517-21, 1959 A reaction vessel for kinetic studies below room temperature. J. Chem. Ed. 40:597, 1963 SOME BIBLIOGRAPHY With L. H. Fung & R. Rattray. Effect of cooking and extraction with simulated gastric juice on the cadmium content of selected foods. Jam. J. Science Techn. 16-7, 2005-6 With R.S. Garrett. The Fe/Na ratio, a framework for modeling trace element distributions in Jamaican soils. Geochem. Explor. Environm. Anal. 5(2):147-57, 2005 With C.N. Grant & M. Vutchkov. In situ gamma spectroscopic measurement of 41 Ar during neutron. Health Physics 87(5):568-72, 2004 With P.C. Onianwa & M. K. Vutchkov. Dry-ashing preconcentration for microreactor-based neutron activation analysis of food and plant samples. Int. J. Environm. Anal. Chem. 83(5):367-74, 2003 With C. Zhang. Multivariate outlier detection and redemption in geochemical databases. Science Total Environm. 281:99-109, 2000 With S.Bajue, P. Dasgupta & H. Robotham. Acid dissociation and nickel-complex formation constants of some nitroso naphthol sulphonate ligands. Polyhedron 8(4):473-7, 1989 With S.A. Bajue & K.L. Stuart. The preparation and properties of some cobalt (III) complexes of the 2-nitroso-l-naphthol-4-sulphonate and 2-nitroso-l-naphthol-ligands. J. Inorg. Nucl. Chem. 37:51, 1975 With G.A. Taylor. The reactions of cobalt compounds with nitroso-naphthols. IV. The stoicheiometry of the reaction between cobaltous and 1-nitroso-2-naphthols-3, 6 disulphonate ions. J. Inorg. Nucl. Chem. 35:4221-9, 1973 With A.W. Boyd & C. Willis. Isotope effects and hydrogen yields in the radiolysis of H2O-D2O mixtures at very high dose rates. Can. J. Chem. 50(1):83-92, 1972 The reactions of cobalt compounds with nitroso-naphthols. II. The mechanism of the reaction between cobaltous ion and l-nitroso-2-naphthol-3,6-disulphonic acid. J. Inorg. Nucl. Chem. 31:1783-9, 1969 The reactions of cobaltammines with l-nitroso-2-naphthol-3,6 disulphonic acid. J. Inorg. Nucl. Chem 30:1925-9, 1968 With G. Bushnell. Kinetics of the reaction between sodium hydroxide and chloropentaaminecobalt (III) perchlorate in aqueous solution. J. Inorg.Nuclear Chem. 30(1):219-23, 1968 Physico-chemical studies on haematein and haematoxylin (1956) With J. Lang. The kinetics of the reaction between nitro-pentamminecobalt (in)perchlorate and the hydroxide ion
Fuad Lechín
Fuad Lechín Corban, Venezuelan neuropharmacologist (08 August 1928 – From Lebanese parents Authored over 240 papers and 4 books Developed a new treatment of bronchial asthma and myasthenia gravis Demonstrated that drugs which enhances uptake by presynaptic serotonergic axons are potent anti-narcoleptic agents in patients resistant to methyl phenidate First to demonstrate the antidiarrheal effect of clonidine, dihydroergotamine, and other alpha adrenergic antagonists, as well as dopaminergic blocking agents Enunciated the adrenergic theory of schizophrenia FOUND That patients affected by vertigo have raised levels of free serotonin in plasma Two types of neurochemical disorders underlying hyperkinetic children (excessive free serotonin in plasma and excessive dopaminergic activity with noradrenergic over activity) That patients displaying post-traumatic stress disorder show total exhaustion of central noradrenergic, dopaminergic and serotonergic activity That symptomatic asthma patients show increased plasma serotonin values OTHERS With B. Van der Dijs & A.E. Lechin. Tianeptine. A new exploratory therapy for asthma. Chest J. 125(1):348-9, 2004 With B. Van der Dijs. Physiological, clinical and therapeutic basis of a new hypothesis for headache. Headache 20(2):77-84, 1980 With B. Van der Dijs, E. Lechin, F. Peña & A. Bentolilla. The dopaminergic and noradrenergic blockades: a new treatment for headache. Headache 18(2):69-84, 1978 New method of investigation of exocrine secretion of the pancreas: preliminary communication. Gac. Med. Caracas 61(3-5):89-110, 1954 Un nuevo modelo de dilatador esofágico. Gen 7:1-2, 1952-3 Papers in top-journals With B. Van der Dijs & A.E. Lechin. Tianeptine, plasma serotonin and pulmonary hypertension. Lancet 361(9351):87, 2003 Intestinal hormones and plasma insulin. Lancet 2:35-6, 1966 With B. Van der Dijs. Glucose disposal. Lancet 2:1122, 1964 HONOURS Medicine and Physiology Nobel Prize nominee (2001) 2000 Outstanding Scientists of the 20th Century, International Biographic Centre (2000) 500 Leaders of Influence, American Biographical Institute (2000) LINKS www.lechin.com
Friedrich Carl Lehmann
Friedrich Carl Lehmann, German-born Colombian botanist and mycologist (Gusow-Platkow, Markisch-Oderland, Brandenburg State 27 December 1850 – Popayá, Cauca Province 24 November 1903) Collected many orchid specimens that were recognized as new taxa by famous experts DESCRIBED PLANTAE TAXA (Orchidaceae) Genera Gorgoglossum 1897 Otopetalum 1899 with Kraenzlin Trevoria 1897 Species About 130 HONORS Lehmanniella Gilg 1895 (Gentianaceae) Neolehmannia Kraenzlin 1899 (Orchidaceae)
Frederico Waldemar Lange
Frederico Waldemar Lange, Brazilian geologist, micropaleontologist and stratigrapher (Ponta Grossa, Paraná State 23 December 1911 – Rio de Janeiro 16 June 1988) From German ancestry Authored 22 works Described new fossil species of mollusks, brachiopods, scolecodonts, chitinozoans and acritarchs DESCRIBED FOSSIL TAXA (incomplete) Family Paulinitidae (Polychaeta) Genera Paulinites 1947 (Polychaeta) Navifusa 1967 with Combaz and Pansart (Protozoa) Cladochitina 1967 (Chitinozoa) Species Angochitina mourai 1952 Cladochitina biconstricta 1967 Cladochitina varispinosa 1967 Conochitina biconstricta 1949 Desmochitina sommeri 1952 Diaphorostoma paranensis 1943 Didymaulichnus furnai 1942 Eunicites paranaensis Lagenochitina avelinoi 1952 Mourlonia oliveirai 1952 Nuculites depressus 1943 Orbiculoidea excentrica 1943 Paulinites paranaensis 1947 Paulinites canuiensis 1950 Pholidops kozlowskii 1943 HONORS (Fossil) Langeites Kielan-Jaworowska 1966 (Polychaeta) Langella Mendes 1961 (Brachiopoda)