996 resultados para Cientifico
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Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
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Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq)
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The following dissertation aims to propose an institutional and intercultural projecy of reception and integration of foreign students from academic mobility programs for the campus unit of Bauru. Such action is necessary because of the absence of a reception program of these students, the reception and integration into the social and cultural reality of the place in which they live is a fundamental part of international experience. As an example for this institutional proposal, we discuss the extension of project experience Brasil de Todo Mundo, which aims to deepen the reflections on the Brazilian cultural universe for foreign students who are in Brazil over a period, while taking academic mobility in the Universidade Estadual Paulista, Bauru campus. Student leadership project, Brasil de Todo Mundo emerged from the international experience in mobility programs offered by UNESP, from students of campus Bauru, when in the back of their experiences, they realized that they could continue being tourists your own country with the reception of foreign students. In addition, the identification of expectations in social and intercultural skills, in addition to reasons connected with the increase academic and language skills are a form of very strong approach, which helps in creating intercultural dialogue spaces between the students, the main objective of the project
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Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq)
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Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq)
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Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq)
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Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq)
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Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq)
Marine Fungi Aspergillus sydowii and Trichoderma sp Catalyze the Hydrolysis of Benzyl Glycidyl Ether
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Whole cells of the marine fungi Aspergillus sydowii Gc12, Penicillium raistrickii Ce16, P. miczynskii Gc5, and Trichoderma sp. Gc1, isolated from marine sponges of the South Atlantic Ocean (Brazil), have been screened for the enzymatic resolution of (+/-)-2-(benzyloxymethyl)oxirane (benzyl glycidyl ether; 1). Whole cells of A. sydowii Gc12 catalyzed the enzymatic hydrolysis of (R,S)-1 to yield (R)-1 with an enantiomeric excess (ee) of 24-46% and 3-(benzyloxy)propane-1,2-diol (2) with ee values < 10%. In contrast, whole cells of Trichoderma sp. Gc1 afforded (S)-1 with ee values up to 60% and yields up to 39%, together with (R)-2 in 25% yield and an ee of 32%. This is the first published example of the hydrolysis of 1 by whole cells of marine fungi isolated from the South Atlantic Ocean. The hydrolases from the two studied fungi exhibited complementary regioselectivity in opening the epoxide ring of racemic 1, with those of A. sydowii Gc12 showing an (S) preference and those of Trichoderma sp. Gc1 presenting an (R) preference for the substrate.
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By means of in situ IR spectroscopy we investigate the effect of dissolved alkali cations on the electro-oxidation of ethylene glycol on platinum in alkaline media. The results revealed that the increase in the oxidation currents (Li(+) < Na(+) < K(+)) is reflected in the increase in the ratio between carbonate and oxalate produced.
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The luminous efficiency of organic light-emitting diodes based on poly(N-vinylcarbazole), PVK, was improved by adding fac-[ClRe(CO)(3)(bpy)], bpy = 2,2`-bipyridine, to PVK host. Emissive layers with various Re(I) complex/host ratio were employed and optoelectronic properties were compared with the single PVK device. The single PVK device exhibits a characteristic electroluminescence with blue emission, lambda(max) 420 nm, assigned to the PVK excimer. On the other hand, the intense and broad band at lambda(max) 580 nm of the Re(I) complex/PVK OLEDs is ascribed to the metal-to-ligand charge transfer excited state emission of fac-[ClRe(CO)(3)(bpy)]. At 30 V, the device luminous efficiency increased from 16 mcd/A for the single PVK device to 211 mcd/A for the 11% (w/w) Re(I) complex/PVK OLED, in which fac-[ClRe(CO)(3)(bpy)] acts as an electron-trap in PVK films. The device current is space-charge limited and exhibits typical emissive layer thickness dependence. (C) 2011 Elsevier B.V. All rights reserved.