Waldyr Muniz Oliva
Waldyr Muniz Oliva, Brazilian mathematician (Santos, São Paulo State 16 June 1930 – DEVELOPED CONCEPTS AND DEFINITIONS Introduced Birkhoffian at finite or infinite dimensions Introduced the concept of the attractor of a retarded functional differential equations Proposed the specific notion of compact global attractor (1970s) Une definition équivalente à l’involution de E. Cartan pour les systemes d’equations aux derivées partielles. Cahiers Topol. Geom. Diff. Categor. 11(2):201-5, 1969 CONTRIBUTIONS Presented a characterization for the notions of regular and singular curves With I. Kupka. The non-holonomic mechanisms. J. Diff. Equations 169(1):169-89, 2001 Presented a mathematical model for analyzing population dynamics involving human and mosquitoes With E.M. Sallum. Periodic dynamic systems for infected hosts and mosquitoes. Rev. Saude Publica 30(3):218-23, 1996 Presented a new non-integrability approach On the chaotic behavior and non-integrability of four vortices problem. Ann. Inst. Henri Poincaré 55:707-18, 1991 First to establish a sample path LDP for an SDDE with additive noise With R. Langevin & J.C.F. Oliveira. Retarded functional differential equations with white noise perturbations (1991) Constructed a new class of Morse-Smale systems With G. Fusco. Jacobi matrices and transversality. Proceed. Royal Soc. Edinburgh Sec. A. Math (1988) DEVELOPED THEOREMS With P. Duarte & R.L. Fernandes. Dynamics of the attractor in the Lotka-Volterra equations. J. Diff. Equations 149(1):143-89, 1998 With N.M. Kuhl & L.T. Magalhães. Diffeomorphisms of Rn with oscillatory jacobians. Publ. Matem. 437:255-69, 1993 With G. Fusco. A Perron theorem for the existence of invariant subspaces. Ann. Math. Pura Appl. (1991) Functional differential equations on compact manifolds and an approximation theorem. J. Diff. Equations 5:483-96, 1969
Thomas Risley Odhiambo
Thomas Risley Odhiambo, Kenyan entomologist (Alego, Nyanza Province 04 February 1931 – Nairobi 26 May 2003) Authored over 130 papers and monographs HEMIPTERA GENERA DESCRIBED Ambonea 1961 Anapsallus 1960 Bowdenella 1961 Chiloxis 1961 Cometocoris 1960 Dhohochilus 1968 Duducoris 1962 Gampsoderma 1960 Kuomocoris 1967 Madondo 1968 Makakix 1967 Metopicoris 1960 Narinellus 1965 Nasutimiris 1961 Notocheila 1961 Nyodochilus 1968 Odhukochilus 1968 Otuchis 1968 Petasma 1961 Prosopicoris 1960 Ragwelellus 1962 Rakula 1967 Rayieria 1962 Rhyssicoris 1960 Stibaromma 1961 Xenolygus 1968 Zacheila 1961 Described at least 90 hemipteran species HONORS Albert Einstein Medal 1979 Genus Odhiamboella Schuh 1974 (Hemiptera)
Teodoro Oniga
Teodoro Oniga, Romanian-born Brazilian engineer (Iapa, Maramures County 02 February 1917 – Rio de Janeiro 18 April 2011) Authored about 200 works CONTRIBUTIONS With F. Schiel. Some new methods of dust analysis. Chem. Abstr. 43:61, 1949 Developed flat collectors with selective surface and a solar refrigerator with ammonia cycle Absorption cooling units with fixed conoidal reflector. UN Conference on New Sources of Energy 6S70, 1964 Proposed Oniga trivalent ternary logic (1974) Found new vegetable oils from seeds of Jatropha pohliana, Jatropha curcas, Joannesia princeps and Talauma ovata With A.J.B. Barreto. Novos oleos vegetais brasileiros. Informativo do INT 12(21):3-6, 1979 PATENTS Process and apparatus for true color reproduction PI0103697-1 A2 (2001) True xerographic pentachromatic color reproduction PI0200460-7 A2 (2002) PI0419454-3 (2004) SOME BIBLIOGRAPHY Sur une généralisation des fonctions circulaires et hyperboliques. C.R. Acad. Sci. Paris 227:1138-40, 1948
Sergio Mascarenhas Oliveira
Sérgio Mascarenhas de Oliveira, Brazilian physicist (Rio de Janeiro 02 May 1928 – Ribeirão Preto, São Paulo State 31 May 2021) ACHIEVEMENTS World authority on dielectrics and Costa Ribeiro effect Authored nearly 200 publications One of the first in the world that extended and melt monocrystals to study charges release First to note the appearing of electrical charges during a solid sublimation Observation of the Costa Ribeiro effect in the process of sublimation of para-phenilene diamine. Anais Acad. Bras. Ciencias 26:345-8, 1954 Showed that heat transmission through a fluid dielectric was intensely affected by the action of electric fields known as electrothermal conductivity effect or Mascarenhas effect (1955-6) Eletro-termo-condutividade. Escola Eng. São Carlos, 1956 (Thesis) With Y.P. Mascarenhas, M.F. Souza & R.F. Rabello. Thermal conduction of liquid dielectrical fields (fatty acids). Anais Acad. Bras. Ciencias 28:96-8, 1956 O novo método do germen monocristalino e a nova análise do efeito Costa Ribeiro (1958) Established a molecular theory about formation of a double layer on solid-liquid or solid-gas interface Created the concept of electrets in biomolecules, i.e. biolectrects and coined the term The electret effect in bone and biopolymers and the bound water problem. Ann. N.Y. Acad. Sci. 238:36-52, 1974 Discovered radiation-induced bone magnetism effect Showed that the irradiation of bone and teeth produces paramagnetic centers in their inorganic components (1971) and that these centers can be used for dosimetry of radiation Discovered residual magnetism phenomenon in bones (1972) Co-discovered electrical charging of amorphous ice With L. Onsager & D.L. Staebler. Electrical effect during condensation and phase transitions of ice. J. Chem. Phys. 68(8):3823-8, 1978 Discovered many effects in solid state physics and new effects related to bone electric and magnetic properties Proved that changes in intracranial pressure deforms the bone structure of brain breaking the Monro-Kellie doctrine METHODS A new method for the observation of the Costa Ribeiro effect and the experimental analysis of this phenomenon. Anais Acad Bras Ciências 31:395-404, 1959 With Celaschi introduced thermal stimulated pressure as a new technique for the study of bound-water and hydration isotherm of biological molecules in Biophys J. 20:273, 1977 With J.N. Onuchic. A new system for thermal stimulated pressure measurements of biological molecules (1980) Developed a new method of archaeological dating employing electronic paramagnetic resonance that named dosimetry by magnetic memory (1998) With Silvio Crestana introduced computerized tomography in farming and cattle raising studies and non-destructive assays of materials Developed a technique for bone fractures solidification employing electric currents Developed photo elastic technique for very low temperatures With A.A. Carvalho, M.H. de Paula & J.R. Cameron. Two thermal methods to measure the energy fluence of a brief exposure of diagnostic x-rays. Medical Physics 19(3):575-7, 1992 DEVICES DEVELOPED With F. Gambirasio & Y.P. Mascarenhas. CO2 electrostatic generator.. American Journal of Physics 26:563-566, 1958. With Y.P. Mascarenhas. Diffraction camera for precision measurements of lattice parameters at low temperatures. Review of Scientific Instruments 38:141-142, 1967. With H. Vargas & C.L. Cesar. Photoacoustical radiation dosimeter. Med. Phys. 11(1): 73-4, 1984 With A.A Carvalho, J.R. Cameron & M.H. de Paula. Two thermal methods to measure the energy fluence of a brief exposure of diagnostic x rays. Medical Physics 19(3): 575-577, 1992 With José C. Pereira a x-ray dosimeter with electrets vibrating membrane With L.E.G. Damiano, G.H.F. Vilela et al. A new non-invasive system to measure intracranial pressure. In 14th International Conference on Intracranial pressure and brain monitoring, 1:236, 2010, Tubingen BrainStrap, a non-invasive method for measuring intracranial pressure employing a sensor device His wife, Yvonne Primerano Mascarenhas, crystallographer (Pederneiras, São Paulo State 21 July 1931 – Authored 172 papers First to observe a bifurcated binding of hydrogen in violuric acid With B.M. Craven. The Crystal structure of perdeuterated violuric acid mono-hydrate the x-ray diffraction analysis. Acta Crystall. Sect. A 17:407, 1964 Determinated the crystal structure of oxytocin With S.P. Wood, I. J. Tickle, T.L. Blundell, V.J. Hruby et al. Crystal structure analysisof deamino-oxytocin conformational flexibility and receptor binding. Science 232 (4750):633-6, 1986 With D. Atencio, J.M.V. Coutinho & J. Ellena described the mineral species matioliite (2006) and menezesite (2008) DEMONSTRATED NEW COMPUNDS With F.G. Souza, V.A. S. Falcomer, J.D. Ardisson, J. Valdés-Martínez & S. Hernandez-Ortega. Synthesis, 119Sn Mosbauer spectroscopic studies and x-ray crystal structure determination of new seven-coordinate diorganotion(IV) complexes with S,N,N,N,S-pentadentate Schiff bases derived from 2,6-diacetylpyridine of S-methyl- and S-benzyldithiocarbazates. Transition Metal Chemistry, 31:753-759, 2006. With C.L.M. Pereira, E.F. Pedroso, A.C. Doriguetto, J. Ellena, A. Aukauloo, Y. Jopurnaux & H.O. Stumpf. [Ph4P]2[Cu(dbpzba)]: um Novo Precursor de Magnetos Moleculares. Livro de Resumos, 27ª Reunião Anual da Sociedade Brasileira de Química e XXVI Congreso Latinoamericano de Química, 2004, Salvador/BA p. QI142 (2004) With A.C. Doriguetto, H.S. Vieira, J. Ellena, J.A. Takahashi, M.A.D. Boaventura. A novel diterpene lactone. Acta Crystallographica. Section E 58:1392-4, 2002. With J.G. Nery & A.K. Cheetham. A Study of the New Ion Exchanged Derivatives of Highly Crystalline Low-Silica Map. Collected Abstracts, International Union of Crystallography XVIII Congress and General Assembly, 1999, Glasgow, Scotland. p. 463, 1999 With G.D.F. Silva, L.P. Duarte, H.C.S. Paes, J.R. Sousa, M.M.C. Nonato & P.J.I. Portezani. 3-Epiabruslactone A, a New Triterpene Lactone isolated From Austroplenckia Populnea. J. Braz. Chem. Soc. 9(5):461-4, 1998. With I. Vencato, A. Neves & A. Metran. A new orthorhombic crystal from of [‘FE'(BBPPN) ] ‘CL’O IND.4’½ ‘C IND.2’H IND.2’0. In: Reunião Anual da Sociedade Brasileira de Cristalografia, Campinas. p. 26, 1995 With A. Neves, A. Metran, I. Vencato, V. Drago, M. Horner, K. Griesar & W. Haase. Structure and magnetic properties of a new tetranuclear oxo-hydroxo-alkoxo iron (III) cluster as a model for Fe. In: 21ª Congresso Latinoamericano de Química, 1994, Panama p. 127, 1994 With A. Neves, S.M.D. Erthal, I. Vencato, A.S. Ceccato, O.R. Nascimento, M. Horner & A.A. Batista. Synthesis, Crystal Structure And Electrochemical And Spectroeletrochemical Properties Of The New Manganese (Iii) Complex [Mn (Bbpen)] [Pf6] [H2 Bbpen=N, N-Bis (2-Hidroxybenzyl)-N, N-Bis (2-Methylpyridyl) Ethylenediamine]. Inorg. Chem. 31:4749-55, 1993. With A. Neves, M.A. Brito, I. Vencato, V. Drago, K. Griesar & W. Haase. Synthesis, Crystal Structure And Properties Of A New Binuclear Iron (Iii)Complex As A Model For The Purple Acid Phosphatases.
Sebastião José de Oliveira
Sebastião José de Oliveira, Brazilian entomologist (Rio de Janeiro 03 November 1918 – Rio de Janeiro 16 April 2005) Authored 77 scientific and popular papers DESCRIBED DIPTERA TAXA Genera Brasixenos 1966 with Kogan Corytibacladius 1995 with Messias & Santos Laurotanypus 1992 with Messias & Silva-Vasconcelos Lopescladius 1967 Species 70 HONORS Oliveiriella Wiedenburg & Fittkau 1997 (Diptera)
Roy Oosthuizen
Roy Don Frederick Oosthuizen, South African amateur paleontologist (East London 09 December 1923 – Prins Albert, Zwartskraal 20 September 1999) Collected several invertebrate species from the Bokkeveld Group SOME BIBLIOGRAPHY With C.D. Waterston & B.W. Oelofsen. Cyrtoctenus wittenbergensis sp.nov. (Chelicerata: Eurypterida), a large sweep-feeder from the Carboniferous of South Africa. Trans. Roy. Soc. Edinburgh, Earth Sci. 76:339-58, 1985 Preliminary catalogue and report on the biostratigraphy and palaeogeographic distribution of the Bokkeveld fauna. Trans. Geol. Soc. S. Afr. 87:125-40, 1984 An attempt to determine the provenance of the Southern Dwyka from palaeontological evidence. Palaeont. Africana 24:27-9, 1981 With M.R. Cooper. Archaeocyatha-bearing erratics from the Dwyka subgroup (Permo-Carboniferous) and their importance to continental drift. Nature 247:396-8, 1974 HONORS Oosthuizenella Cooper 1982 (Trilobita)