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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal; Embrapa Unidades Centrais. |
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Data corrente: |
05/03/1999 |
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Data da última atualização: |
02/08/2019 |
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Autoria: |
SHIMABUKURO, Y. E.; NOVO, E. M.; PONZONI, F. J. |
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Afiliação: |
YOSIO EDEMIR SHIMABUKURO, Instituto Nacional de Pesquisas Espaciais - INPE/Divisão de Sensoriamento Remoto - DSR; EVLYN MORAIS NOVO, Instituto Nacional de Pesquisas Espaciais - INPE/Divisão de Sensoriamento Remoto - DSR; FLÁVIO JORGE PONZONI, Instituto Nacional de Pesquisas Espaciais - INPE/Divisão de Sensoriamento Remoto - DSR. |
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Título: |
Índice de vegetação e modelo linear de mistura espectral no monitoramento da região do Pantanal. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 33, p. 1729-1737, out. 1998. Edição especial. |
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Idioma: |
Português |
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Notas: |
Título em inglês: Vegetation index and spectral linear mixing model for monitoring the Pantanal region. |
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Conteúdo: |
Este trabalho apresenta a contribuicao da imagem indice de vegetacao de diferenca normalizada (NDVI) e das imagens-fracao derivadas de modelo linear de mistura espectral para o monitoramento da dinamica da cobertura do solo na regiao do Pantanal. As imagens indice de vegetacao e as imagens-fracao (vegetacao, solo e sombra ou agua) foram derivadas dos dados digitais do TM (Thematic Mapper) do Landsat obtidos sobre a regiao do alto Taquari (MS), em 22 de dezembro de 1992 (periodo seco) e 12 de marco de 1993 (periodo chuvoso). Estas imagens permitiram analisar a cobertura de solo da regiao nas datas das imagens, bem como detectar as mudancas ocorridas entre o periodo de aquisicao dessas imagens. Aparentemente, os resultados indicaram maior sensibilidade da imagem-fracao de vegetacao as variacoes de cobertura vegetal do solo quando comparada com a imagem indice de vegetacao (NDVI). O metodo de retificacao radiometrica apresentou bom desempenho, indicando que tanto os alvos escuros quanto os alvos claros, selecionados nas imagens, nao sofreram mudancas durante o intervalo de aquisicao das imagens. |
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Palavras-Chave: |
Fraction images; Imagens-fracao; Landsat TM; NDVI; Radiometric rectification; Retificacao radiometrica. |
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Thesagro: |
Cobertura Vegetal. |
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Thesaurus Nal: |
vegetation cover. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/7856/1/082-pant.pdf
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Marc: |
LEADER 01980naa a2200253 a 4500
001 1091688
005 2019-08-02
008 1998 bl uuuu u00u1 u #d
100 1 $aSHIMABUKURO, Y. E.
245 $aÍndice de vegetação e modelo linear de mistura espectral no monitoramento da região do Pantanal.
260 $c1998
500 $aTítulo em inglês: Vegetation index and spectral linear mixing model for monitoring the Pantanal region.
520 $aEste trabalho apresenta a contribuicao da imagem indice de vegetacao de diferenca normalizada (NDVI) e das imagens-fracao derivadas de modelo linear de mistura espectral para o monitoramento da dinamica da cobertura do solo na regiao do Pantanal. As imagens indice de vegetacao e as imagens-fracao (vegetacao, solo e sombra ou agua) foram derivadas dos dados digitais do TM (Thematic Mapper) do Landsat obtidos sobre a regiao do alto Taquari (MS), em 22 de dezembro de 1992 (periodo seco) e 12 de marco de 1993 (periodo chuvoso). Estas imagens permitiram analisar a cobertura de solo da regiao nas datas das imagens, bem como detectar as mudancas ocorridas entre o periodo de aquisicao dessas imagens. Aparentemente, os resultados indicaram maior sensibilidade da imagem-fracao de vegetacao as variacoes de cobertura vegetal do solo quando comparada com a imagem indice de vegetacao (NDVI). O metodo de retificacao radiometrica apresentou bom desempenho, indicando que tanto os alvos escuros quanto os alvos claros, selecionados nas imagens, nao sofreram mudancas durante o intervalo de aquisicao das imagens.
650 $avegetation cover
650 $aCobertura Vegetal
653 $aFraction images
653 $aImagens-fracao
653 $aLandsat TM
653 $aNDVI
653 $aRadiometric rectification
653 $aRetificacao radiometrica
700 1 $aNOVO, E. M.
700 1 $aPONZONI, F. J.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 33, p. 1729-1737, out. 1998. Edição especial.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
29/01/2024 |
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Data da última atualização: |
30/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 3 |
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Autoria: |
OLIVEIRA, K. C. B. F.; FARIAS, E. A. de O.; TEIXEIRA, P. R. S.; BRANDÃO, V. S.; SÁBIO, R. M.; ARAÚJO, A. R. de; EATON, P.; BERTOLINO, L. C.; BEMQUERER, M. P.; BARUD, H. da S.; LEITE, J. R. de S. de A.; EIRAS, C. |
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Afiliação: |
KARLA COSTA BEZERRA FONTENELE OLIVEIRA, UNIVERSIDADE FEDERAL DO PIAUÍ; EMANUEL AIRTON DE OLIVEIRA FARIAS, UNIVERSIDADE FEDERAL DO PIAUÍ; PAULO RONALDO SOUSA TEIXEIRA, UNIVERSIDADE FEDERAL DO PIAUÍ; VITOR SCHWENCK BRANDÃO, CENTRO DE TECNOLOGIA MINERAL; RAFAEL MIGUEL SÁBIO, UNIVERSIDADE DE ARARAQUARA; ALYNE RODRIGUES DE ARAÚJO, UNIVERSIDADE FEDERAL DO PIAUÍ; PETER EATON, UNIVERSIDADE DO PORTO; LUIZ CARLOS BERTOLINO, CENTRO DE TECNOLOGIA MINERAL; MARCELO PORTO BEMQUERER, CNPGL; HERNANE DA SILVA BARUD, UNIVERSIDADE DE ARARAQUARA; JOSÉ ROBERTO DE SOUZA DE ALMEIDA LEITE, UNIVERSIDADE DE BRASÍLIA; CARLA EIRAS, UNIVERSIDADE FEDERAL DO PIAUÍ. |
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Título: |
Development of a nanostructured film containing palygorskite and dermaseptin 01 peptide for biotechnological applications. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Clays and Clay Minerals, v. 71, p. 600-615, 2023. |
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DOI: |
https://doi.org/10.1007/s42860-023-00259-z |
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Idioma: |
Inglês |
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Conteúdo: |
Clay minerals are suitable matrices to anchor organic molecules such as antimicrobial peptides (AMPs) so that their bioactivity is maintained, enabling the formation of new materials with potential for new applications in biotechnology. The objective of the present study was to develop a nanostructured flm where the properties of palygorskite (Plg) were combined at the molecular level with Dermaseptin 01 (DRS 01), in which the clay mineral also served as a substrate for the immobilization of this peptide. The flms were prepared using the Layer-byLayer (LbL) self-assembly technique. Crude palygorskite without purifcation (Plg IN) was subjected to physical and chemical procedures to increase its adsorptive properties. The structure, chemical composition, and morphology of Plg were investigated by X-ray difraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray fuorescence spectrometry (XRF), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). LbL flms were adsorbed onto ITO (Indium Tin Oxide) and characterized electrochemically by cyclic voltammetry (CV), UV-Visible spectroscopy, and atomic force microscopy (AFM). For the ITO/DRS 01 and ITO/Plg/DRS 01 flms, an oxidation process at +0.77 V was observed, confrming that the DRS 01 maintained its electroactive behavior and intrinsic properties. The results also showed that Plg served as excellent support for the immobilization of DRS 01, increasing its concentration and availability in the flm form. This work reported immobilizing the DRS 01 peptide with Plg for the frst time in an ultrathin flm with bioactive properties. Thus, the flm developed can be explored for applications such as biosensor devices and antimicrobial coating materials as well as other biotechnological applications. MenosClay minerals are suitable matrices to anchor organic molecules such as antimicrobial peptides (AMPs) so that their bioactivity is maintained, enabling the formation of new materials with potential for new applications in biotechnology. The objective of the present study was to develop a nanostructured flm where the properties of palygorskite (Plg) were combined at the molecular level with Dermaseptin 01 (DRS 01), in which the clay mineral also served as a substrate for the immobilization of this peptide. The flms were prepared using the Layer-byLayer (LbL) self-assembly technique. Crude palygorskite without purifcation (Plg IN) was subjected to physical and chemical procedures to increase its adsorptive properties. The structure, chemical composition, and morphology of Plg were investigated by X-ray difraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray fuorescence spectrometry (XRF), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). LbL flms were adsorbed onto ITO (Indium Tin Oxide) and characterized electrochemically by cyclic voltammetry (CV), UV-Visible spectroscopy, and atomic force microscopy (AFM). For the ITO/DRS 01 and ITO/Plg/DRS 01 flms, an oxidation process at +0.77 V was observed, confrming that the DRS 01 maintained its electroactive behavior and intrinsic properties. The results also showed that Plg served as excellent support for the immobilization of DRS 01, increasing its concentration and availability in the ... Mostrar Tudo |
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Palavras-Chave: |
Cationic antimicrobial peptides; Fibrous clay minerals; Filme fino; Filme nanoestruturado; Mineral argiloso fibroso; Peptídeo antimicrobiano catiônico; Pithecopus hipocondria. |
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Thesagro: |
Biotecnologia; Peptídeo. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 02987naa a2200373 a 4500
001 2161436
005 2024-01-30
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s42860-023-00259-z$2DOI
100 1 $aOLIVEIRA, K. C. B. F.
245 $aDevelopment of a nanostructured film containing palygorskite and dermaseptin 01 peptide for biotechnological applications.$h[electronic resource]
260 $c2023
520 $aClay minerals are suitable matrices to anchor organic molecules such as antimicrobial peptides (AMPs) so that their bioactivity is maintained, enabling the formation of new materials with potential for new applications in biotechnology. The objective of the present study was to develop a nanostructured flm where the properties of palygorskite (Plg) were combined at the molecular level with Dermaseptin 01 (DRS 01), in which the clay mineral also served as a substrate for the immobilization of this peptide. The flms were prepared using the Layer-byLayer (LbL) self-assembly technique. Crude palygorskite without purifcation (Plg IN) was subjected to physical and chemical procedures to increase its adsorptive properties. The structure, chemical composition, and morphology of Plg were investigated by X-ray difraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray fuorescence spectrometry (XRF), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). LbL flms were adsorbed onto ITO (Indium Tin Oxide) and characterized electrochemically by cyclic voltammetry (CV), UV-Visible spectroscopy, and atomic force microscopy (AFM). For the ITO/DRS 01 and ITO/Plg/DRS 01 flms, an oxidation process at +0.77 V was observed, confrming that the DRS 01 maintained its electroactive behavior and intrinsic properties. The results also showed that Plg served as excellent support for the immobilization of DRS 01, increasing its concentration and availability in the flm form. This work reported immobilizing the DRS 01 peptide with Plg for the frst time in an ultrathin flm with bioactive properties. Thus, the flm developed can be explored for applications such as biosensor devices and antimicrobial coating materials as well as other biotechnological applications.
650 $aBiotecnologia
650 $aPeptídeo
653 $aCationic antimicrobial peptides
653 $aFibrous clay minerals
653 $aFilme fino
653 $aFilme nanoestruturado
653 $aMineral argiloso fibroso
653 $aPeptídeo antimicrobiano catiônico
653 $aPithecopus hipocondria
700 1 $aFARIAS, E. A. de O.
700 1 $aTEIXEIRA, P. R. S.
700 1 $aBRANDÃO, V. S.
700 1 $aSÁBIO, R. M.
700 1 $aARAÚJO, A. R. de
700 1 $aEATON, P.
700 1 $aBERTOLINO, L. C.
700 1 $aBEMQUERER, M. P.
700 1 $aBARUD, H. da S.
700 1 $aLEITE, J. R. de S. de A.
700 1 $aEIRAS, C.
773 $tClays and Clay Minerals$gv. 71, p. 600-615, 2023.
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Embrapa Gado de Leite (CNPGL) |
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