Jorge Lobo
Jorge de Oliveira Lobo, Brazilian medical mycologist and dermatologist (Recife 12 November 1899 – Recife 09 April 1979) Authored 53 papers Described Lobo disease or lobomycosis Um caso de blastomicose produzido por uma espécie nova, encontrada em Recife. Rev. Med. Pernambuco 44:763-5, 1931. Described new pathogenic fungi With A.E. Area Leão. Micetome du pied a Cephalosporium recifei n.sp. mycetome a grains blancs. C.R. Soc. Biol. 117:203-5, 1934 With A.E. Area Leão. Micetoma podal de grãos brancos, Acremonium lutzi, n.sp. Acta Med. Rio de Janeiro 4:211-21, 1939 HONORS Loboa Ciferri, Azevedo, Campos & Carneiro 1956 (Fungi)
Jorge Lewowicz
Jorge Lewowicz Volman, Uruguayan mathematician (Montevideo 17 March 1937 – Montevideo 21 June 2014) Obtained a class of topological stable diffeomorphisms wider than the class of Anosov diffeomorphisms Gave a new proof of stability With Tolosa showed that expansive homeomorphisms in the Co boundary of Anosov are conjugated Introduced the concept of persistence in several types of expansive homeomorphisms Introduced notion of persistence for a homeomorphism of a compact metric space (1983) Coined the term persistence (1983) Proved the non existence of stable points in expansive homeomorphisms of surfaces (1983) Proved that every pseudo-Anosov map is persistent (1983) Introduced infinitesimal Lyapunov functions or quadratic forms Proposed a theorem about expansive homeomorphism of a compact orientable surface (1989) independently of Hiraide (1990) Proposed the use Lyapunov functions of two variable to study structural stability and similar concepts Proved, for a differentiable vector or field or a diffeomorphism on a smooth manifold, that the set of points such that the semitrajectories issuing from them approach a particular semitrajectory at a given exponential rate constitute a differentiable submanifold, provided that diferential of the flow has a certain similar behavior on that trajectory (1981) Gave necessary and sufficient conditions for the existence of an elementary attracting periodic motion of an autonomous system as the only invariant set contained in a given positively invariant region of phase sphere (1974) With R. Ures proved that if Axiom A diffeomorphisms is exteriorly situated, stable and unstable half-leaves of points of boundedly deviates from geodesics (2000) Obtained criteria that assure that certain conservative diffeomorphisms display entropy towards volume EPONYMY Lewowicz classification of expansive homeomorphism of surfaces Lewowicz number of linear diffeomorphisms Lewowicz theorem Lewowicz map Lewowicz structural stability theorem Lewowicz diffeomorphisms
Jorge Landi Dessy
Jorge Silvio Francisco Landi Dessy, Argentine astronomer (Buenos Aires 01 September 1922 – 1991) A relative of bacteriologist Silvio Dessy DISCOVERED Variable stars with a period shorter than one day in Magellanic Clouds (1952) independently of Thackeray With Dartayet 25 new faint variable stars (1952) and 333 new SMC variables (1959) With Laborde new variables in the Minor Cloud (Region f) Found 277 new variables stars New variables in the large Magellanic Cloud (1964) Discovered 3 short-period variable stars in With M. Dartayet. Small Magelanic Cloud (1952) Proposed a spectral classification of stars Adaptation of the MK system to later spectra of medium dispersion with an intent of three-parametric classification (1966) DEVICES Proposed theories for preventing distinct optical aberrations in telescopes Proposed a new type of kernel camera having only one optical surface With R. Platzeck. La camara de Meinel telecêntrica. Bol. Asoc. Arg. Astron. 2 (1960) With R. Platzeck. A new type of collimator for Meridian mark (1962) Proposed a two-mirror aplanat with concave primary and flat secondary in An astrometrical aplanatic telescope with a figurated flat secondary mirror. Bol. Asoc. Arg. Astron. 14:18-28, 1968 New parametric tables for reflecting telescopes, for aplanats, anastigmats, flat-fielded, distortion free and third order errors free systems (1968) Un nuevo tipo de telescopio camara con tres espejos / A telescope camera with three mirrors. Publ. Astron. Soc. Pacific 75:66, 1963 A project of 40″ telescope applied to a high dispersion spectrograph (1964) SOME BIBLIOGRAPHY With M. Jaschek & C. Jaschek. An atlas of grating stellar spectra at intermediate dispersion (1977) With José R. Laborde. The short period variable stars in the Magellanic Clouds. Astrophys. Space Science Library 23:47-9, 1971 With J.R. Laborde. 1107 variable stars in the Magellanic Clouds observed at Cordoba Obsevatory (1970) With P.C. Keenan. Spectral types on the MK System for Forty Three bright Southern Stars, K2M6. Astrophys. J. 146:587, 1966 With P.C. Keenan. Variations in spectral type of the Mira variables R CEN and T CEN. Astrophys. J. 146:583, 1966 With A. Puch. A discussion of third order errors of reflecting telescopes. Mem. Soc. Astr. Ital. 37:657, 1966 A two minor aplanat with concave primary and flat secondary. Mem. Soc. Astr. Ital. 37, 1966 Distortion free aplanatic telescopes. Mem. Soc. Astr. Ital. 37, 1966 Some lesser known properties of Ritchey-Chretien telescopes. Mem. Soc. Astron. Ital. 34:415, 1963 La binaria p Eridani (1949) With J. Sahade. The radial velocities of CPD-63’896 With J. Sahade. La binaria espectroscopica Boss 4496 HONORS Asteroid 2381 Landi
John Douglas Lynch
John Douglas Lynch, US / Colombian herpetologist (Collins, Iowa State 30 July 1942 – DESCRIBED VALID AMPHIBIA TAXA Families Limnodynastidae 1969 Micrixalidae 2006 with Frost, Grant, Faivovich, Bain, Haas et al Nyctibatrachidae 2006 with Frost, Grant, Faivovich, Bain, Haas et al Odontophrynidae 1969 Ptychadenidae 2006 with Frost, Grant, Faivovich, Bain, Haas et al Genera Atelognathus 1978 Atopophrynus 1982 with Ruiz-Carranza Dischidodactylus 1979 Duttaphrynus 2006 with Frost, Grant, Faivovich, Bain, Haas et al Feihyla 2006 with Frost, Grant, Faivovich, Bain, Haas et al Hyalinobatrachium 1991 with Ruiz-Carranza Hydrophylax 2006 with Frost, Grant, Faivovich, Bain, Haas et al Ingerophrynus 2006 with Frost, Grant, Faivovich, Bain, Haas et al Kurixalus 2006 with Frost, Grant, Faivovich, Bain, Haas et al Poyntonophrynus 2006 with Frost, Grant, Faivovich, Bain, Haas et al Scythrophrys 1971 Sylvirana 2006 with Frost, Grant, Faivovich, Bain, Haas et al Vandijkophrynus 2006 with Frost, Grant, Faivovich, Bain, Haas et al Species Over 300 HONORS (Amphibia) Lynchophrys Laurent 1983 Lynchius Hedges, Duellman & Heinicke 2008 Rulyrana Guayasamín, Castroviejo-Fisher, Trueb, Ayarzaguena, Rada & Vila 2009
Joaquín López Figueroa
Joaquín López Figueroa, Argentine surgeon and anatomist (Salta 1868 – Buenos Aires 29 October 1926) Contribución al estudio del tratamento de las fracturas por la movilización y el massaje. Doctoral Thesis (1896) Eponym of Lopez Figueroa femorocutaneous incisure
Joaquín Luco
Joaquín Luco Valenzuela, Chilean neurophysiologist (Santiago 18 July 1913 – Cartagena, Valparaiso Region, San Antonio Province 19 July 2002) ACHIEVEMENTS Discovered that neurons are able to learn Idealized a new perfusion system Nuevo sistema de perfusion con la preparación cardiopulmonar. Algunos aspectos de la regulación de la glicemia. Thesis, 1936 With A. Rosenblueth demonstrated that during prolonged stimulation of a motor nerve, neuromuscular fatigue is followed by a rise of tension known as Rosenblueth phenomenon (1939) Discovered fifth step in neuromuscular transmission With A. Rosenblueth. The fifth stage of neuromuscular transmission. Amer. J. Physiol. 126(1), 1939 Enunciated paradigm of short and large nerve With C. Eyzaguirre. Fibrillation and hypersensitivity to Ach in denervated muscle: effect of length of degenerating nerve fibers. J. Neurophysiol. 18(1):65-73, 1955 Performed important studies on learning and memory in invertebrates (employing Blatta orientalis) With L.C. Aranda. An electrical correlate to the process of learning. Experiments in Blatta orientalis. Nature 201:1330-1, 1964 With L.C. Aranda. Reversibility of electrical correlate to process of learning. Nature 209:205-6, 1966 Increase of synaptic efficacy as a correlate to learning in Blatta orientalis. Physiol. Behav. 21(5):743-7, 1978 Proved that the motor nerve possesses inductive properties that defines the gene expression of relevant macromolecules to the neural function in the innervations element With N.C. Inestrosa & B. Mendez. Acetylcholinesterase like that of skeletal muscle in smooth muscle reinnervated by a motor nerve. Nature 280(5722):504-6, 1979 Other contributions With M.I. Behrens. New concepts on homeostasis. Arch. Biol. Med. Exp. 13(2):209-12, 1980 With P.B. Dews & C.N. Woolsey. Brain research. Science 158(3803):951-8, 1967