996 resultados para Ramsauer, Johannes, 1790-1848.
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Invocatio: I.N.J.
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Invocatio: Jehovah benedicente.
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Invocatio: F.L.S.N.
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Atmospheric chemistry in Brazil from 1790 to 1853. Scarcely any mention is made today of investigations carried out in Brazil during the period above on the science of the atmosphere. Yet the study of these cases reveals much about the milieu of a few devoted men who laboured to pursue a scientific career. That such an arcane topic has been the concern of investigators at such an early date may come as a surprise to many. The subject was an oddity as a field of study anywhere at the time, and its history deserves the attention of present-day chemists.
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Kirjallisuusarvostelu
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Kirjallisuusarvostelu
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Dedicated to: Carl Cronstedt, Carl Gustaf Tessin, Theodor Ankarkrona, Otto Reinhold Wrangel, Olof Sandberg, Jacob von Hökerstedt, Carl von Groot, Carl Friedrich Piper, Olof von Törne, Petter Drufwa, Johan Löwen, Swen Cederström, Johan Maurits Klinkowström, Leonhard Klinkowström, Reinholdt Berndt Hauswolff, Christopher Christopherssen, Johan Williamsson, Olof Malmer, Johan Adam Petersson, Gustaf Kierman, Anders Plomgren.
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Dedicated to: Joachim Georg von Ganschav, Gustaf Fabricius, Simon Ruuth, Matthias Dan. Blohm, Barthold Frese, Henric Rungeen, Carl Fagerholm.
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Abstract: The concentration of heavy metals (Cr, Fe, Al, As, Cd, Cu, Pb, Mo, Ni, Se and Zn) was evaluated in the blood of nestling blue macaws (Anodorhynchus hyacinthinus) captured in the Pantanal, Mato Grosso do Sul (n=26) in 2012; this was based on the hypothesis that these birds exhibit levels of these heavy metals in their organism and that these interfere in hatching success, weight and age of the chicks. Blood samples were digested with nitric acid and hydrochloric acid and the quantification of metals was performed by ICP-OES (Optical Emission Spectroscopy and Inductively Coupled Plasma). Blood samples of nestlings showed concentrations of Cr (0.10μg/g) Fe (3.06μg/g) Al (3.46μg/g), Cd (0.25μg/g) Cu (0.74μg/g), Mo (0.33μg/g), Ni (0.61μg/g), Se (0.98μg/g), and Zn (2.08μg/g). The levels of heavy metals found were not associated with weight, age and hatching success of the chicks.
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Kirjallisuusarvostelu
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1 kartta :, vär. ;, 102 x 70 cm, [1:1231722], skalan är en million 231722 del af naturliga storleken