Spectral Mixture Analysis
Mostrando 1-12 de 47 artigos, teses e dissertações.
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1. Synthesis and in silico study of 2-furyl(4-{4-[(substituted)sulfonyl]benzyl}-1-piperazinyl)methanone derivatives as suitable therapeutic agents
Abstract In the study presented here, a new series of 2-furyl(4-{4-[(substituted)sulfonyl]benzyl}-1-piperazinyl)methanone derivatives was targeted. The synthesis was initiated by the treatment of different secondary amines (1a-h) with 4-bromomethylbenzenesulfonyl chloride (2) to obtain various 1-{[4-(bromomethyl)phenyl]sulfonyl}amines (3a-h). 2-Furyl(1-piper
Braz. J. Pharm. Sci.. Publicado em: 20/04/2017
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2. COMPOSIÇÃO QUÍMICA DAS CASCAS DAS RAÍZES E FLORES DEPoincianella pyramidalis (Fabaceae)
Chemical investigation of the MeOH extract of root barks of P. pyramidallis (Tul.) L. P. Queiroz resulted in the isolation of 3,3'-dimethylellagic acid and 3,3'-dimethylellagic acid-4'-O-β-D-xyloside. Lupeol, β-sitosterol/stigmasterol and the mixture of fatty acid methyl ester derivatives were also obtained. Chromatographic procedures of the MeOH extract o
Quím. Nova. Publicado em: 2016-02
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3. New Flexible and Transparent Solution-Based Germanium-Sulfide Polymeric Materials
New flexible and transparent materials based on germanium sulfide were obtained using GeCl4 and 1,3-propanedithiol as precursors. These materials have transparency in the ultraviolet-visible (UV-Vis) spectral region (about 70%), thermal stability up to 200 °C and glass transition located at temperatures below 0 °C (-37 °C, -56 °C and -59 °C) as shown by
J. Braz. Chem. Soc.. Publicado em: 2015-05
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4. Chemical constituents of Lecythis pisonis and cytotoxic activity
The phytochemical investigation of the ethanol extract from leaves of Lecythis pisonis Cambess., Lecythidaceae, resulted in the isolation of seven triterpenes: α- and β-amyrin, uvaol and erythrodiol, ursolic and oleanolic acids and 3β-friedelinol, as well as a mixture of sitosterol and stigmasterol steroids and a diterpene (E)-phytol. The structures of th
Rev. bras. farmacogn.. Publicado em: 17/04/2012
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5. Modelagem da radiação térmica em chamas laminares da combustão de metano em ar
This work analyses the effects of thermal radiation heat transfer on methane-air laminar diffusion flames. The analysis is based on the solution of the equations of continuity, fluid motion, species mass-fraction and enthalpy. The soot formation is accounted with a twoequation model while a chemistry mecanism with 112 reactions is used for the combustion of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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6. Avaliação dos modelos de mistura espectral mesma e SMA aplicados aos dados hiperespectrais hyperion/eo-1 adquiridos na Planície Costeira do Rio Grande do Sul / Evaluation of MESMA and SMA mixture models applied to hyperion/eo-1 hyperspectral data acquired on the coastal plain of Rio Grande do Sul
O objetivo do presente trabalho foi avaliar o uso potencial dos dados hiperespectrais do sensor orbital Hyperion/Earth Observing One (EO-1) e dos modelos de mistura espectral MESMA (Multiple Endmember Spectral Mixture Analysis) e SMA (Spectral Mixture Analysis) para discriminação de classes de cobertura da Planície Costeira do Rio Grande do Sul. O modelo
Publicado em: 2010
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7. Análise do modelo linear de mistura espectral aplicado a imagens para mapeamento da cultura de arroz irrigado no Rio Grande do Sul / Analysis of the linear spectral mixture model applied to MODIS images for the mapping of irrigated rice culture in Rio Grande do Sul
O monitoramento e a previsão de safras agrícolas são fundamentais para a economia de um país ou região, pois a partir dos dados gerados é possível obter informações a respeito da oferta de produtos no mercado, sendo estas informações necessárias, tanto na definição de preços, quanto nas políticas públicas de estoque. Com base na necessidade
Publicado em: 2010
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8. Sensoriamento remoto ótico &exploração petrolífera onshore e offshore / Remote sensing &offshore and onshore petroleum exploration
O petróleo é constituído basicamente por uma mistura de componentes químicos orgânicos (hidrocarbonetos) e pode ser classificado segundo a escala de grau API, viscosidade ou quantidade relativa de seus componentes SARA (i.e. saturados, aromáticos, resinas e asfaltenos). Escapes naturais de hidrocarbonetos para a superfície são denominados de exsudaç
Publicado em: 2010
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9. Uso do sensoriamento remoto orbital e de superfície para o estudo do comportamento espectral do corpo de água do reservatório de Manso, MT, Brasil / Use of orbital and surface remoto sensing to the study of the spectral signature of the reservoir water Body, MT, Brazil
The monitoring of water quality of a reservoir allows for preservation of the environment as well as bringing social-economic benefits. Remote Sensing accomplishes this monitoring in a synoptic way, because it considers spatial and time scales necessary to evaluate an aquatic ecosystem. For this, a Moderate Resolution Imaging Spectroradiometer (MODIS) sensor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/05/2009
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10. Análise exploratória do efeito do solvente na análise de metabólitos secundários das folhas de Rollinia mucosa (Jacq.) Baill por métodos quimiométricos
Effect of different solvents on the extraction and yield of secondary metabolites of the crude and fractionated extracts of the Rollinia mucosa (Jacq.) Baill was investigated by simplex centroid design mixtures of ethanol, ethyl acetate, dichloromethane, acetone and chloroform. The effect of the composition of mobile phase on the chromatographic separation o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2009
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11. Estudo fitoquímico das cascas das raízes de Zanthoxylum rigidum Humb. & Bonpl. ex Willd (Rutaceae)
Chemical investigation from root barks of Z. rigidum, resulted in the isolation of lupeol, a mixture of steroids campesterol, sitosterol, stigmasterol, sacarose, hesperidin, N-methylatanine and 6-acetonyldihydrochelerythrine. Their structures were established by spectral data analysis. No previous work has been reported on Z. rigidum species.
Química Nova. Publicado em: 2009
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12. Uso do sensoriamento remoto orbital e de superfície para o estudo do comportamento espectral do corpo de água do reservatório de Manso, MT, Brasil / Use of orbital and surface remoto sensing to the study of the spectral signature of the reservoir water Body, MT, Brazil
The monitoring of water quality of a reservoir allows for preservation of the environment as well as bringing social-economic benefits. Remote Sensing accomplishes this monitoring in a synoptic way, because it considers spatial and time scales necessary to evaluate an aquatic ecosystem. For this, a Moderate Resolution Imaging Spectroradiometer (MODIS) sensor
Publicado em: 2009