Har Dayal Srivastava
Har Dayal Srivastava, Indian helminthologist and parasitologist (15 June 1908 – 20 October 1989) With Dutta elucidated the life history of Schistosoma indicum (1951-5) Published the life cycle of Clinostomum piscidum (1959) Studied the life history of Stephanofilaria assamensis, the causative parasite of hump sore of cattle and its treatment Studied an unique form of dermatitis in cattle, the cutaneous microfilariasis or Srivastava dermatitis of cattle Studied the morphology and taxonomy of trematode parasites of Indian freshwater and marine fishes DESCRIBED HELMINTHOLOGICAL TAXA Trematoda Valid Genera Duttiella 1980 with Prasad & Maurya Eumasenia 1951 Folliorchis 1948 Hurleytrema 1939 Indoderogenes 1937 Mehrailla 1939 Mehraorchis 1934 Neonotoporus 1942 Nicollodiscus 1939 Orientodiscus 1937 Polyorchitrema 1939 Thapariella 1955 Tubanguia 1935 Yamagutia 1939 Cestoda Valid Genera Barbusa 1975 with Capoor Ophrycotylus 1977 with Capoor Species At least 75 new species in Trematoda and Cestoda HONORS Srivastavatrema Singh 1962 (Trematoda) Srivastavanema Singh 1962 (Nematoda)
Hans Stammreich
Hans Stammreich, German-born Brazilian spectroscopist (Remscheid, Renania 16 July 1902 – São Paulo 06 March 1969) Authored 86 papers with classical works in molecular Raman spectroscopy ACHIEVEMENTS With Adolf Miethe (1924) and independent from H. Nagaoka (1925) discovered transmutation of mercury to gold Obtained the first Raman spectra of a number of materials With O. Sala, R. Forneris & A.G. Ayrosa developed the technique of the excitation of Raman spectra with helium lamps in Technique and results of excitation of Raman spectra in the red and near infrared region. Spectrochim. Acta 8:41-45, 1956 With R. Forneris made the first use of extreme-red excitation for Raman analysis (1961) With R. Forneris obtained the first Raman spectrum and the calculation of force constants for plane configuration molecules With O. Sala introduced large contribution to Raman scattering studies of metals (1958-61) With O. Sala & R. Forneris presented reported studies of metallocarbonyls, cyano complexes, halogen complexes and interhalogen compounds With P. Krumholz performed the first studies in elucidating the structure of metal-carbonyl employing Raman spectroscopy (1959-61) and first to demonstrate the existence of metal-metal bonds in metal-carbonyl compounds (1971) First reported stowing force constants of M-C and C-O with retrodonation and conjugative interactions Presented one of first works about resonant Raman effect in The Raman spectrum of bromine. Phys. Rev. 78:78, 1950 METHODS, INVENTIONS & PATENTS A Raman excitation technique using helium vapour lamps (with Oswaldo Sala) A method for obtaining Raman spectra of high-coloured substances Developed and patented a new method of production of electric discharge lamps in metal vapours Process to manufacture of transparent and semitransparent papers for foods maintenance A method to measure the motion of small animals (with G. Ayrosa e A.G. Pavan) Introduced the use of spectrographs based on diffraction gratings into Raman instrumentation (1956) With O. Sala & R. Forneris developed narrow bandpass filters that resulted in the ability to obtain superb Raman spectra of solid or turbid solutions With O. Sala & R. Forneris introduced the use of rubidium vapor lamp with strong resonance for obtaining spectra of Cl4 and many other species A helium discharge lamp of long duration Metal iodides lamps High-luminosity spectrographs with high-efficiency diffraction gratings in red region Dispositif for manufacture of vitamin D Device for measuring and recording sedimentation rates of blood globules Microcolorimeter for medical purposes Device to discriminate natural pearls from developed ones with x-rays aid A special paper to record electrical impulses Special electrodes for iontophoresis and preventive treatment of burns caused by war fumes With A. Miethe. Improvements in or relating to the extraction of precious metals. German Patent Specification #233,715 (8 May 1924) Metal arc lamp (1928) US 1885637 With R. Wasicky & A. Giuliani described a new apparatus for the electrical recording of locomotion movements in laboratory animals in An. Fac. Farm. Odont. Univ. S. Paulo 8:187, 1950 With R. Wasicky. Um dispositivo para medição e registro da excitação do sistema nervoso dos animais. An. Fac. Farm. Odont. Univ. S. Paulo (1951) BIBLIOGRAPHY Ciência e Cultura 21(4):785-94, 1969 (in Portuguese; with complete bibliography)
Hans Joachim Schumacher
Hans Joachim Schumacher, German-born Argentine physical chemist (Siegburg, North Rhine Westphalia 23 September 1904 – La Plata September 1985) Authored over 300 scientific papers Determined the dissociation energy of the fluorine molecule Performed the first reliable studies of the low pressure fall-off regions of the thermal dissociation reactions of nitryl chloride (1931), difluorine monoxide (1934) and perfluoroperoxide (1937) His studies on ozone decompositions as well as reactions of ozone with fluorine, chlorine and bromine molecules attracted international recognition (1930s) Demonstrated the specific influence of added inert gases and provided the first reliable collision efficiencies in unimolecular reactions Elucidated complex reaction mechanisms of highly reactive species With A.J. Arvia authored pioneer works in the field of gas phase reaction kinetics in the presence of flourine Postulated FCOx family (1960s)
Gumersindo Sayago
Gumersindo Sayago Gallardo, Argentine pneumologist (Santiago Del Estero 10 December 1893 – Cordoba 29 March 1959) Considered as an authority on surgical treatment of pulmonary tuberculosis SOME BIBLIOGRAPHY Cheesy focus in lung. Journal Am. Med. Association 79(2): 594, 1922 Surgical treatment of pulmonary tuberculosis. Am. Rev. Tuberc. 15:544, 1927 With I.J. del Villar. Variaciones de la colesterolemia en los periodos terminals de la tuberculosis pulmonar del adulto. Rev. Soc. Arg. Biol. 7:423-7, 1931 Sobre un caso de tumor primitivo de pulmón. Neoplasmes 12-13:62, 1933 With L.L. Dobric. Sobre una observación de enfisema gigante de rapida aparición. La Semana Med. 42(2):10, 1935 Cisuras y lobus apicales. Aspectos radiológicos. Rev. Med. 23(5):254-64, 1935 With H. Becerra. La neumólisis intrapleural. Temas Tisiol. 5:92, 1935 Uber einige gesichtspunkte des Emphysems im Verlaufeder chronischen Lungentuberkulose. Beitr. Klin. Tbk. 88:669, 1936 With T. Villafane Lastra. Formas infantiles de la tuberculosis pulmonary en el adulto. Temas Tisiol. 10, 1938 With J.A. Perez & R. Finochietto. Lobectomy with report of a case. Rev. Assoc. Med. Arg. 57:48, 1943 Los cuadros anatomicos de la tuberculosis pulmonar y sus relaciones en la epidemiologia. Temas Tisiol. 1943 Formation of caverna in the different stages of the tuberculous affection. Prensa Med. Arg. 36(43):2163-5, 1949 With J.B. Rocca & I.F. Wolaj. Prognosis and treatment of giant tuberculous caverns. Rev. Bras. Tuberc. Doenças Torac. 24(164):999-1014, 1955 With J. Allende. Plombaje extrapleural, etc. Prensa Med. Arg.
Guillermo Seeber
Guillermo Rodolfo Seeber Cayol, Argentine physician (Buenos Aires 08 November 1876 – ?) Identified rhinosporidiosis (1893) and described the causal agent Rhinosporidium seeberi (1900) without named it Un Nuevo esporozoario parasite del hombre. Dos casos encontrados em polipos nasales. Doctoral Thesis, Universidad Nacional de Buenos Aires (1900) A new suspensor for treating blennorrhagic orchiepididymitis Un Nuevo suspensorio para el tratamiento de la orquiepididimitis blenorragica (1905)
Govind Swarup
Govind Swarup, Indian radioastronomer (Thakurdwara, Uttar Pradesh State 23 March 1929 – Pune, Maharashtra State 07 September 2020) Authored over 125 papers and 4 books ACHIEVEMENTS Discovered type U solar radio bursts Found the first example of a steep spectrum “bridge” of radio emission between the two radio lobes of a radio galaxy (1962) First provided high-resolution angular data for more than 1000 weak radio sources (1970s) Discovered a relation between the angular sizes of radio sources and their flux density Developed a gyro-radiation model for explaining the microwave solar emission With A. Maxwell. A new spectral characteristic in solar radio emission. Nature 181:36-8, 1958 PATENTS/METHODS/INNOVATIONS Developed a round trip transmission technique for phase measurements (1959) Constructed a parabolic-cylindrical radio telescope of a unique and innovative design (1960s) Produced innovative concepts and designs for radio telescopes Conceived and headed the design and construction of Giant Metrewave Radio Telescope, the world’s largest radio telescope operating the frequency range of about 130-1430 MHz (1984-96) With V.K. Kapahi. A simple image forming technique suitable for multifrequency observations of solar radio bursts. Solar Physics 14:404-13, 1970 A fixed mirror line focus solar concentrator (patent) A preloaded parabolic dish antenna and method of designing it (patent) HONOURS Tsiolkovsky Medal, Federation of Cosmonautics, USSR (1987) Delinger Gold Medal, International Union of Radio Sciences (1990) Herschel Medal, Royal Astronomical Society (2005) Grote Reber Medal, Australia (2007)