Absortion Spectra
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Synthesis, characterization and study of catalytical properties of mixed layered hydroxides containing Cu(II)/Mg(II)/Al(III) / Síntese, caracterização e estudo de propriedades catalíticas de hidróxidos mistos lamelares contendo Cu(II)/Mg(II)/AI(III)
In this work it was investigated the preparation and spectroscopic characterization of layered hydroxides of composition [Mg3-xCuxAl(OH)8](CO3)0.5.yH2O (x = 0.3; 0.6; 0.9; 1.2; 1.5; 1.8; 2.1; 2.4; 2.7 and 3.0), as well the reactivity of these materials towards phenol hydroxylation, using hydrogen peroxide as oxidizing agent. The solids had been prepared thro
Publicado em: 2005
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2. Avaliação das imagens do sensor ASTER para discriminação espectral de variações faciológicas no granito Serra Branca, estado de Goiás / Aster sensor images valuation to spectral discrimination of faciologics variations in the Serra Branca granite, Goias state
The objective of this work was to evaluate the potential of ASTER/Terra images, acquired in the visible and near-infrared (VNIR) regions and in the shortwave infrared (SWIR) interval, for the discrimination of faciological variations in the Serra Branca granite massif in the Tin Province of the Goiás. This province is composed of several granitoid bodies th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/10/2003
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3. Aster sensor images valuation to spectral discrimination of faciologics variations in the Serra Branca granite, Goias state / Avaliação das imagens do sensor ASTER para discriminação espectral de variações faciológicas no granito Serra Branca, estado de Goiás
Este trabalho busca avaliar os aspectos relacionados à potencialidade das imagens do sensor Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER)/Terra, obtidas na faixa do visível e infravermelho refletido, para discriminação espectral de variações faciológicas no maciço granítico Serra Branca, inserido na Província Estanífera de
Publicado em: 2003
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4. Caracterização de vidros e vitro-cerâmicas com composição 2Na2O1CaO3SiO2 / Characterization of glasses and glass-ceramics with composition 2Na2O1CaO3SiO2
Glass with composition 2Na2O1CaO3SiO2, undergoes homogeneous crystal nucleation between 450 and 56OoC. The nuclei are essentially spherical and presumable have the same composition as the glass matrix. Measuriments of density, X-ray diffraction, thermal analysis by differential scanning calorimetry (DSC), ultrasonics by pulse-echo method, optical absorption,
Publicado em: 1990
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5. Compostos de coordenação de dimorfolino cloro-fosfinoxido com alguns metais de transição bivalentes
Coordination compounds were prepared by the reaction between chlorides, nitrates and perchlorides of some bivalent transition metals of the first row of transition elements with chlore-dimorpholinephosphine oxide in methanolic solution. The compounds so obtained were caracterized by means of elementar analysis, infrared spectra, far infrared and visible spec
Publicado em: 1977