Gerhard Malnic
Gerhard Malnic, Austrian-born Brazilian renal physiologist (Milano 25 September 1933 – São Paulo 05 February 2023) From Slovenian father and Austrian mother Authored over 120 works Discovered how occurs the potassium excretion in renal tubules With G. Giebisch & R. Klose developed an improved microflame photometer (1964) and perfected the method of performing micropuncture and microperfusion studies on the distal tubule, which elucidated the role of each nephron segment in determining urinary potassium excretion (1964-6) With G. Giebisch demonstrated that potassium is secreted down its electrochemical gradiente and linked indirectly to the rate of sodium reabsorption With G. Giebisch proposed that potassium was reabsorbed downstream of the distal tubule Showed that when sodium reabsorption is stimulated the increase in potential difference enhanced the electrochemical driving force and stimulated potassium secretion With G. Giebisch developed a method for sodium and potassium microdosage in kidney With A. Carvalho da Silva developed a fluorometric method for tiamine (B1 vitamine) With F. Lacaz Vieira authored a work about secretion mechanisms of water in kidney with more than 300 citations The one researcher in the world to use microperfusion of potassium dosage employing microelectrodes First work employing micropuncture in the functional study of glomerulopathies With M.M. Machado & A.S. Rocha. Micropuncture study in rats with experimental glomerulo-nephrites. Kidney Intern. 3(1):14, 1973
Geraldo da Costa Barros Muniz
Geraldo da Costa Barros Muniz, Brazilian geologist and paleontologist (Maceió 12 March 1924 – Recife 13 October 2013) DESCRIBED INVERTEBRATE FOSSIL TAXA Mollusca Genus Brasilicardium 1993 Species Acesta paraibensis 1993 Bellifusus parvus 1993 Calyptraea paraibensis 1993 Calyptraphorus itamaracensis 1993 Camptonectes (Camponectes) moderatus 1993 Cancellaria paraibensis 1993 Cerithiella (Cerithiella) pernambucensis 1993 Cerithium paraibense 1993 Coleopis (Coleopis) brasiliensis 1993 Crassattella paraibensis 1993 Cypricardella petrolandensis 1979 Cyprimeria paraibensis 1993 Dentalium mauryae 1976 with Penna-Neme Exogyra (Exogyra) gramamensis 1993 Fimbria beurleni 1993 Fusinus delicatus 1993 Gaudryceras brasiliense 1993 Granocardium (Criocardium) paraibense 1993 Keilostoma magna 1993 Legumen brasiliense 1993 Leptodesma langei 1979 Leptosolen paraibensis 1993 Linearia (Liothyris) brasiliensis 1993 Liopistha riogramamensis 1993 Lithophaga paraibensis 1993 Lopha aracajuensis 1984 Mataxa paucilirata 1993 Mesalia garapuensis 1993 Mesalia priscilae 1993 Mesocallista mauryae 1993 Neithea latericostata 1993 Otostoma paraibense 1993 Paleopsephaea itamaracensis 1993 Pseudoliva bellecompta 1993 Pseudomalaxis pauciornata 1993 Pterodonta gramamensis 1993 Pugnellus assisi 1993 Pyropsis axiornata 1993 Sanguinolites pernambucensis 1979 Sanguinolites rochacamposi 1979 Sinonia paraibensis 1993 Spathella brevis 1979 Streblopteria antiqua 1979 Strombus latiaperturalis 1993 Trachytriton pernambucense 1993 Turritella nordestensis 1993 Woodsella brasiliense 1993 Subspecies Turritella antigona itamaracensis 1993 Ichnofossil Species Bifungites cruciformis 1982 Cochlinus lagartensis 1980 Cochlinus sousensis 1983 Merostomichnites piauiensis 1988 Rusophycus piauiensis 1982 Sublorenzinia pauciradiata 1982 Tasmanadia brasiliensis 1984 Brachiopoda Species Camarotoechia itamaracensis 1993 Bryozoa Species Lunulites (Heteracis) barbosae with Buge 1974
Geraldo Conrado Melcher
Geraldo Conrado Melcher, Brazilian mining engineer and geologist (São Paulo 07 October 1924 – São Paulo 09 June 2011) Co-authored a paper with great repercussion that confirmed the geochronological correlation between Brazil and Africa continent With P.M. Hurley, F.F. M. de Almeida, U.G. Cordani, J.R. Rand, K. Kawashita, P. Vandoros, W.H. Pinson Jr. & H.W. Fairbairn. Test of continental drift by comparison of radioactive eggs. Science 157(3788):495-500, 1967 With P. A. Andery helped to develop Serrana process of separation and concentration of phosphates in minerals with low phosphate content or alkaline rocks employing flotation (1960s) SOME BIBLIOGRAPHY With J.M.V. Coutinho. Levantamento geológico e petrográfico na ilha do Montão de Trigo. Rev. Bras. Geoc. 3(4):243-56, 1973 With C.B. Gomes, U.G. Cordani, J.S. Bettencourt, E.C. Damaceno. V.A.V. Girardi & A.J. Melfi. Geologia e petrologia das rochas metamórficas e graniticas associadas do vale do Ribeira de Iguape, SP e PR. Rev. Bras. Geoc. 3(2):97-123, 1973 With U.G. Cordani. A geochronological comparison of West Africa and South America basement. Trans. Amer. Geophys. Union 53:178, 1972 With G.E. Tolbert, J.W. Tremaine & C.B. Gómez. The recently discovered Serra dos Carajás iron deposits, Northern Brazil. Econ. Geol. 66:985-94, 1971 With P.M. Hurley, F.F.M. De Almeida, U.G. Cordani & K.R. Koch. Surface density values for the earth from satellite and gravity observation. J. Roy. Astron. Soc. Geophys. 21:1-12, 1970 With P.M. Hurley, W.H. Pinson Jr. & H.W. Fairbairn. Some orogenic episodes in South America by K/Ar and whole-rock Rb/Sr dating. Canad. Jour. Earth Sci. 5:633-8, 1968 With U.G. Cordani & F.F.M. De Almeida. Outline of the Precambrian geochronology of South America. Canad. Jour. Earth Sci. 5:629-32, 1968 With F.F.M. De Almeida, U.G. Cordani, K. Kawashita & P. Vandoros. Radiometric age determinations from Northern Brazil. Bol. Soc. Bras. Geol. 5:2-14, 1968 Contribuição ao conhecimento do distrito mineral do Ribeira do Iguape. Thesis, Universidade de São Paulo (1968) With J.M.V. Coutinho. Rochas alcalinas e carbonatito de Anápolis, Estado de santa catarina. Bol. Soc. Bras. Geol. 15:59-93, 1966 O carbonatito de Jacupiranga. Bol. Fac. Filos. Cien. Letras Univ. São Paulo 282 (1965) With R.F. Johnson. Geologia e depósitos minerais do vale do Rio Ribeira do Iguape. Div. Fom. Prod. Mineral 98-99, 1956 Nota sobre o distrito alcalino de Jacupiranga, estado de São Paulo. Notas Prelim. Div. Geol. Min. 84 (1954) With H. Mau. Novas observações geológicas na região de Caçapava do Sul. Rio Grande do Sul. Anais Acad. Bras. Ciencias 32(1):43-50, 1950 HONORS Melcherite Andrade, Atencio, Menezes Filho & Spratt 2018 (Mineral)
Gastão Galhardo Madeira
Gastão Galhardo Madeira, Brazilian aeronautical engineer (Ubatuba, São Paulo State 20 June 1869 – São Paulo 04 August 1942) Discovered the principle that explained the suspension of birds bodies and their displacement due to removal of gravity center Authored a complete study of his works in newspaper Correio Paulistano during January 1892 (days 6,8,9, 10,12,13,14,15,16,23,24 & 27) PATENTS (obtained in Brazil, French, Germany, Italy, England and USA) A new dirigible aerostat (1890) Aviplane, a device to assert more equilibrium stability to airplanes(1911) with Hilário Freire A new kind of airplane (1913) A mechanism of movable pieces to assert of automatic stabilization of airplanes and analogues (1913) & PF475.066 (1914) A Flight simulator PF 474.398 (1914) Electric signs ruled by a revolving door. PF480.454 (1915) Elevator control mechanism of airplanes and other aerial devices. PF491.840 (1916) A new kind of air screw for airplanes, sea-planes, dirigibles and other similar (1939)
Gaspar Marcano
Gaspar Marcano Echenique, Venezuelan physician and anthropologist (Caracas 01 April 1850 –Paris, France 16 January 1910) Brother of scientist Vicente Marcano ACHIEVEMENTS Performed a study about leprosy that was awarded by Academie de Medecine de Paris Invented hemostereometer, a device for measuring blood sedimentation Developed Marcano solution or fluid for counting blood red cells Collected an important showcase of cranes and skeletons (today in Musee de Homme at Paris) MEMBERSHIP/HONORS First Foreigner to occupy an official position in Faculté de Medecine de Paris (1878) Honorary Member, Societé Anatomique de Paris Bronze Medal, French Public Assistence
Gabriel Moreno
José Gabriel Moreno Espinoza, Peruvian physician and naturalist (Canta, Huamantanga District 19 March 1735 – Lima 09 May 1809) Studied botany under Joseph de Jussieu Studied medicinal properties of various plants Explored Vulcan Pichincha in order to determine vapors temperature being the memory that published about it gained a good repercussion SOME BIBLIOGRAPHY Prelusión que en el examen de anatomia (1796) Almanaque peruano y guia de forasteros para el año de 1805 Almanaque peruano y guia de forasteros para el año de 1807 Almanaque peruano y guia de forasteros para el año de 1810 HONORS Subgenus Morenia Ruiz & Pavón 1794 (Arecaceae)