Eleazar Guzman Barron
Eleazar Sebastián Guzmán Barrón, US/Peruvian biochemist (Huari, Ancash 18 September 1899 – Chicago 26 June 1957) Regarded as world authority in cellular respiration and enzymatic systems associated to biological oxidations Performed classical researches on pyruvic acid metabolism Indicated the function of sulphydrylic compounds in metabolism Demonstrated that cortical hormones inhibit glycolysis by inhibition of hexokinase With M. Bacila. The effect of adrenal cortical hormones on the anaerobic glycolysis and hexokinase activity. Endocrinology 54(5):591-603, 1954 Demonstrated that enzymes containing active sulphydryl groups were capable in defending against radiations (1943) With William A. Pearlzweig. New colorimetric method for determination of bile acids in blood. Proceed. Soc. Exper. Biol. Medicine 24:233-4, 1926.
Eduardo Gonzalez Pacheco
Eduardo Gonzalez Pacheco, Chilean mining engineer and mineralogist (died 2002?) SOME BIBLIOGRAPHY Hidratos de gas. Revista de Marina 2-3, 2002 With J. Muñoz Cristi, La cuenca petrolifera de Magallanes. Rev. Minerales 91:42-57, 1965 Estudio geologico-economico del districto minero de Panulallo y regiones vecinas. Anales Fac. Cien. Fis. Matem. 11(11):45-92, 1954 With J. Muñoz Cristi, Geologia de los yacimientos de pirofilita de Arrayán en la Provincia de Cauquenes (i.e. Maule). Rev. Minerales 1953 HONORS Gonzalezoxylon Nishida 1981 (Fossil Plantae)
Domingo Mauricio Gómez
Domingo Mauricio Gómez Gimeranez, Cuban biomathematician (Guaracabuya, Las Villas Province 22 September 1903 – Manhattan 13 December 1978) Living in United States since 1960s Authored about 70 scientific works and 4 books ACHIEVEMENTS Authored the first modern treatise on hemodynamics Les lois physiques de l’hémodynamique (leur détermination piézographique). Actualites Scientifiques, Recherches d’ Hemodynamique et Cardiologie 511, 1937 Discovered a new syndrome With H. Vaquez. Un syndrome hypertensif nouveau. L’hypertension moyenne solitaire (1931) First to apply piezoelectricity to measurement of blood pressure in vessels With André Langevin developed Gomez-Langevin procedure for measuring pressure changes in blood vessels and conceived Gomez-Langevin piezograph or piezoelectric manometer (1933) Authored studies and discoveries about arterial hypertension treatment employing extracts from cortical region of the kidney receiving the Prix Mesurer of Academie de Medecine de Paris (1935) Action therapeutique de certains extraits rénaux dans le traitement de l’hypertension artérielle (1934) Developed Gómez formulae for estimating intrarenal hemodynamics Laid out the foundations of microscopic morphometrical techniques in developing morphometric methods for estimating the lungs diffusion surface area Published a series of formulae for directly evaluating glomerular hemodynamics in humans Evaluation of renal resistances, with special reference to changes in essential hypertension. J. Clin. Invest. 30:1143-55, 1951 Developed Weibel-Gómez technique or method With E.R. Weibel. A principle for counting tissue structures on random sections. J.Appl. Physiol. 17:343-8, 1962 Introduced the concept of continuous distribution for either specific tidal volume throughout the lungs or for the specific blood flow through the organs and tissues A mathematical treatment of the distribution of tidal volume throughout the lung. Proc. Nat. Acad. Sci. Washington 49(3):312-9, 1963 A physicomathematical concept of continuous distribution of specific blood flow through the organs. PNAS 51(5):750-7, 1964 With E. Weibel proposed irregular dichotomy as mode of branching in all human airway tree and found that the average diameter of the airways decreased by a factor of cube root of ½ Presented methods for the evaluation of the physical characteristics of the renal vascular tree Hemodynamics of the renal circulation. La Rev. Scie. 3272(8):451, 1947 Showed that blood flow through the kidney was reduced in hypertensive patients With P.R. Caldwell. A formulation for the partition of free vs. hemoglobin-bound 2,3-diphosphoglycerate. Resp. Physiol. 19(3):290-7, 1973 INVENTIONS/PATENTS With Vaquez & Gley invented a new oscillometer (Kimometre) With A.J. Langevin. Methode et apareil pour la mesure et l’enregistrement des pressions sanguines. Le piezographe. Brevet d’invention nº 337.641 (1932) SOME BIBLIOGRAPHY With C. Rodrigue. Etude radiologique et clinique de l’opacité aortique (1931) With P. Gley. La determination des pressions moyenne et minima par la methode oscillometrique. Presse Med. 39:284, 1931 With P. Gley. Le travail Du coeur sous l’influence des anevrysmes arterioso-veineux. J. Physiol. et de Pathol. Gen. 29:442-5, 1931 With P. Bailliart. La pression moyenne dans le glaucome Action de certains extraits de la corticale du rein sur la retention ureique: contribution a l’etude therapeutique de l’uremie. Presse Med. 9:219-21, 1935 Caracteristiques physiques des vaisseaux, debit circulatoire et loi de decroissance, en fonction du temps, de la pression arterielle. Comp. Rend. Hebd. Sean. Acad. Sci. 203:1030, 1936 With C. Veil. Sur la limite statique de la presion arterielle. Comp. Rend. Soc. Biol. 123:957-9, 1936 With André Langevin. La piézographie directe et instantanée: ses applications aux etudes d’hémodynamique; controle des méthodes mécaniques. Actualites Scientifiques, 1937 Hémodynamique et angiocinétique: etude rationelle des lois régissant les phénomênes cardio-vasculaires (1941) L’Hemodynamique de la circulation renale. Rev. Sci. 85 (451):583, 1947 With P. A. Morales, C.H. Crowder et al. Measurement and significance of urinary appearance time in dog. Amer. J. Physiol. 163:454, 1950. Evaluation of renal resistances with special reference to changes in essential hypertension. J.Clin. Invest. 30:1143, 1951 Considerations of oxygen-hemoglobin equilibrium on the physiological state. Am. J. Physiol. 200:135-42, 1961 With E.R. Weibel. Architecture of the human lung. Use of quantitative methods establishes fundamental relations between size and number of lung structures. Science 137:577-85, 1962 With W.A. Briscoe & G. Cumming. Continuous distribution of specific tidal volume throughout the lung. J. Appl. Phys. 19:683-92, 1964 A physico-mathematical study of lung function in normal subjects and in patients with obstructive pulmonary diseases. Med. Thorac. 22:275-94, 1965 With J. Lowenstein, P.R. Steinmetz et al. The distribution of intrarenal blood flow in normal and hypertensive man. Circulation 35:250-4, 1967 With P.R.B. Caldwell & H.W. Fritts. Respiratory heat exchange in normal subjects and in patients with pulmonary disease. J. Appl. Physiol. 26:82-88, 1969 HONORS Medicine and Physiology Nobel Prize nominee for three times
Domingo Giribaldo
Domingo José Pedro Giribaldo Larcebo, Uruguayan chemist (Pando, Canelones 25 January 1876 – Montevideo 09 July 1950) From Italian father and French mother ACHIEVEMENTS Proposed pR, a new notation for determining acidity or basicity of solutions as an alternate to pH scale Notation rationnelle pour exprimer la reaction actuelle des solutions. Bull. Societé Chimie Biol. 7:652-64, 1925 Ein neuer ausdruck für die aktuelle reaktion der Losungen. Biochem. Ztschr. 163:8-12, 1925 Expression of the current reaction of the solutions. Sorensen’s notation and its disadvantages. New rational notation (1924) Proposed a general equation of electrolytes on the basis of the different degrees of ion’s oxidation Redox theory of electric cells. Proc. 8th Amer. Sci. Congr. 7:146-67, 1942. Developed a general method for potentiometric calculation of pH index Expresión de la reacción y calculos potenciometricos en la determinación del pH (1938) With A. Peluffo his work about determination of milk extracts using density gained a good repercussion (1909) With A. Peluffo. Determination indirecte de l’extrait du lait de vache:origine et fondements des formules qui servent à en faire le calcul. Introduced improvements in Carrel liquid (1924) Líquido Carrel (1924) Developed Giribaldo galvanic pairs Teoria General Redox de los pares galvânicos (1940) Developed electrolysis method in diaphragm cell (1911) patented in Germany Invented a electrolytic trough (1920s) Patronización de los electrodos de calomelano (Standardization of calomelane electrodes) SOME BIBLIOGRAPHY / OTHER CONTRIBUTIONS Ventajas de pR sobre pH en la expresión de la reacción. Anales Fac. Quim. Farm. Univ. Montevideo 2, 1938 Expresión de la reacción y cálculos potenciometricos em la determinación del pH (1937) With A. Peluffo. Bemerkungen zu der Neuen formel von Hoyberg zur Berechnung der Feltfreien Trockensubstanz der Milch. Zeitschr. Fur Untersuchung der Nahrungs und Genussmittel. 38:207, 1919 With A. Peluffo. La glucosa comercial. Rev. Centro Farm. Urug. 13:225, 1906 La expresión de la reacción de los medios acuosos. Anal. Fac. Quim. Farm. Montevideo Expresión de la reacción de las disoluciones acuosas Reducción de las pesadas al vacio El problema del azúcar Fundamento teórico de la determinación precisa de los pesos moleculares y atômicos a partir de las densidades gaseosas Contribución a la teoría del analisis indirecto Significado electronico de la constante de equilíbrio de las reacciones químicas electromotrices Teoria de los electrodos de sales insolubles Estabelecimiento de las ecuaciones de las reacciones quimicas de oxidación-reducción sobre la base de las ecuaciones electronicas de los sistemas Redox reaccionantes Dos teoremas previos al estabelecimiento de las ecuaciones de Gibbs TRIVIA The first Third World chemist to be nominee to Chemistry Nobel Prize (1949)
Domingo Felix Gimenez
Domingo Felix Gimenez, Argentine microbiologist (1924- Developed Gimenez stain Staining Rickettsia in yolk sac cultures. Stain Technol. 39:135-40, 1964 With L.S. Mayorga, O.P. de Centorbi & C.C. de Millan. Rapid in vivo assay method for type G Botulinal toxin. Zentr. Bakter. Mikrobiol. Hyg. A 264(1-2):78-83, 1987 SOME BIBLIOGRAPHY With C.A. Ciccarelli & J.M. Barrera. Siphonaptera de Mendoza. Anales Soc. Cient. Arg. 178:125-39, 1964 Gram staining of Coxiella burnetii. J. Bacteriol. 90:834-5, 1965 With A.S. Ciccarelli. A new type of Clostridium botulinum. (1967) With A.S. Ciccarelli. Studies on strain 84 of Clostridium botulinum. Zentralb. Bakt. Parasit. 215:212-220, 1970 With A.S. Ciccarelli. Another type of Clostridium botulinum. Zentralb. Bakt. Parasit. 215:221-4, 1970 Serological classification and typing of Clostridium botulinum. Dev. Biol. Stand. 32:175-83, 1976 With A.S. Ciccarelli, D.N. Whalley & L.N. McCroskey et al. Cultural and physiological characteristics of Clostridium botulinum type G and the susceptibility of certain animals to its toxin. Appl. Environ. Microbiol. (1977) With A.S. Ciccarelli. New strains of Clostridium botulinum subtype Af. Zentralb. Bakt. Parasit. Infektionskr. Hyg. Abt 1. Orig. Reihe A 240:215-220, 1978 Clostridium botulinum subtype Ba. Zentralb. Bakt. Parasit. Infektionskr. Hyg. Abt 1. Orig. Reihe A 257:68-72, 1984 With R.A. Fernandez, A.S. Ciccarelli & G. Arenas. Type D and A Clostridium botulinum in necropsy samples from bovines with “mad of Aguapey”. Rev. Arg. Microbiol. 21:47-53, 1989 With J.A. Gimenez. The typing of botulinal neurotoxins. Int. J. Food Microbiol. 27(1):1-9, 1995
Djalma Guimarães
Djalma Guimarães, Brazilian mineralogist, petrographer and geochemist (Santa Luzia, Minas Gerais State 05 Nov 1894 – Belo Horizonte 10 October 1973) Authored over 240 works ACHIEVEMENTS Proposed a new genetical metamorphic process for Diamonds Upland Diamonds deposits. Diamantina District, Minas Gerais. Economic Geology, New Haven 24:444-47, 1929 Nota prévia sobre a synthese do diamante (1926) Gênese do diamante. Anais Acad. Bras. Ciencias (1929) Proposed enstenitization or hiperstenization theory that postulates a change in piroxene structure from monoclinical to orthorhombic Created a theory about the intramagmatic transformation of clinopyroxene into orthopyroxenes through a series of magma equilibrium reactions (1928) O fenômeno da hypersthenização e a exegese. Anais Acad. Bras. Ciencias 2(1):1-11, 1929 O processo de hypersthenização nas rochas do Alto Rio Branco. Anais Acad. Bras. Ciencias 1(4):191-5, 1929 Proposed genetic granitization of rocks (1938) independent from H.G. Backlund studies Das problem der Granitbildung. Chemie der Erde 12:83-94, 1938 Suggested that crust acidification is a general process Contribuição à gênese dos magmas toleiticos. Bol. Inst. Tecnol. Indust. 1 (1946) Proposed a theory about the origin of alkaline rocks, an opposite view of Daly theory A origem das rochas alcalinas. Bol. Inst. Tecnol. Industr. 5 (1947) Authored the monograph Mineral deposits of magmatic origin whose abstract was published in Economic Geology and his theory accepted and teached in courses of Economic Geology of a number of universities in United States Mineral deposits of magmatic origin. Economic Geology 42:45-57, 1947 Metalogênese e teoria migratória dos elementos. Bol. Serv. Fom. Prod. Mineral 24 (1938) Proposed a model for disintegration of Gondwana Continent Considerações cronogeológicas sobre a deriva do continente sul-americano. Bol. Div. Geol. Min. Notas Prelim. Estud. 148 (1971) Obtained the first successful result in the history of geophysical methods in the world when he headed the group that used aerocintilometry for finding pyrochlore deposits in Araxá, Minas Gerais State (1953) Minerals and rocks Described two new mineral species (arrojadite in 1924 and pennaite in 1948) and the mineral variety eschwegeite in 1926 Named rock araxaite (1926) Described a variety of skarnit (1960) Methods and devices Informações sobre aparelhos e dispositivos para a extração do ouro de alluvião. Avulso Div. Fomento Prod. Mineral 51 (1942) Patented a new process for production of fertilizer from apatite Proposed a new method used to separate uranium and other elements in high degree of purity (1929) Sobre um processo de separação do urânio, do zircônio, tântalo, nióbio, titânio, ferro, manganês, chumbo, estanho, cobre, níquel e cromo. Anais Acad. Bras. Ciências 1(4):198-200, 1929. HONORS Named Prince des Geologues by Madame Curie Djalmaite C.P.Guimarães (today uranomicrolite) Guimaraesite Chukanov, Atencio, Zadov, Menezes Filho & Coutinho 2007 (Mineral) His brother, geochemist Caio Pandiá Guimarães (Rio de Janeiro 13 January 1914 – Belo Horizonte 16 September 1945) Authored 14 works Described analytical process for tantalum-niobates Marcha analítica (Analytical process) para os tântalos-niobatos. Mineração e Metalurgia 6(31):41-45, 1941 Described mineral djalmaite (1939)