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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
16/02/2017 |
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Data da última atualização: |
16/02/2017 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SIMÕES, M. G.; FERRAZ, R. P. D.; BÉGUÉ, A.; BELLÓN, B.; FREITAS, P. L.; MACHADO, P. L. O. A.; NEVES, M. L.; SKORUPA, L. |
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Afiliação: |
MARGARETH GONCALVES SIMOES, CNPS; RODRIGO PECANHA DEMONTE FERRAZ, CNPS; A. BÉGUÉ, CIRAD; B. BELLÓN, CIRAD; PEDRO LUIZ DE FREITAS, CNPS; PEDRO LUIZ OLIVEIRA DE A MACHADO, SRI; MATHEUS L. DAS NEVES, UERJ; LADISLAU ARAUJO SKORUPA, CNPMA. |
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Título: |
Satellite based multi-scale methods to support governance of Brazil's low-carbon agriculture (ABC Plan). |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: GEOBIA, 6., 2016, Enschede. Solutions & synergies: conference proceedings. Enschede: University of Twente, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Brazil's Low Carbon Agriculture is one the initiatives that puts the climate in the agricultural agenda towards a more sustainable and adapted agriculture under global changes. Among the several practices listed and supported by the ABC Plan, zero tillage and integrated crop-livestock-forestry systems including the recovery of degraded pasture are the most relevant ones. The objective of this paper is to present the Geo-ABC Project, a procedure to monitor the implementation of the Brazil?s Low Carbon Agriculture (ABC Plan) and aiming at the development of remote sensing methods to monitor agricultural systems listed in the ABC Plan and adopted at local scale. |
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Palavras-Chave: |
Mudança de uso da terra; Segmentação; Séries temporais; Sistema integrado lavoura-pecuária. |
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Thesagro: |
Agrossilvicultura; Sensoriamento Remoto. |
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Thesaurus Nal: |
Agroforestry; Land use change; Remote sensing. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01669naa a2200313 a 4500
001 2064435
005 2017-02-16
008 2016 bl --- 0-- u #d
100 1 $aSIMÕES, M. G.
245 $aSatellite based multi-scale methods to support governance of Brazil's low-carbon agriculture (ABC Plan).$h[electronic resource]
260 $c2016
520 $aBrazil's Low Carbon Agriculture is one the initiatives that puts the climate in the agricultural agenda towards a more sustainable and adapted agriculture under global changes. Among the several practices listed and supported by the ABC Plan, zero tillage and integrated crop-livestock-forestry systems including the recovery of degraded pasture are the most relevant ones. The objective of this paper is to present the Geo-ABC Project, a procedure to monitor the implementation of the Brazil?s Low Carbon Agriculture (ABC Plan) and aiming at the development of remote sensing methods to monitor agricultural systems listed in the ABC Plan and adopted at local scale.
650 $aAgroforestry
650 $aLand use change
650 $aRemote sensing
650 $aAgrossilvicultura
650 $aSensoriamento Remoto
653 $aMudança de uso da terra
653 $aSegmentação
653 $aSéries temporais
653 $aSistema integrado lavoura-pecuária
700 1 $aFERRAZ, R. P. D.
700 1 $aBÉGUÉ, A.
700 1 $aBELLÓN, B.
700 1 $aFREITAS, P. L.
700 1 $aMACHADO, P. L. O. A.
700 1 $aNEVES, M. L.
700 1 $aSKORUPA, L.
773 $tIn: GEOBIA, 6., 2016, Enschede. Solutions & synergies: conference proceedings. Enschede: University of Twente, 2016.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
08/09/2017 |
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Data da última atualização: |
20/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
DUARTE JUNIOR, A. P.; TAVARES, E. J. M.; ALVES, T. V. G.; MOURA, M. R. de; COSTA, C. E. F. da; SILVA JÚNIOR, J. O. C.; COSTA, R. M. R. |
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Afiliação: |
Anivaldo Pereira Duarte Junior, UFPA; ERALDO JOSE MADUREIRA TAVARES, CPATU; Taís Vanessa Gabbay Alves, UFPA; Márcia Regina de Moura, UNESP; Carlos Emmerson Ferreira da Costa, UFPA; José Otávio Carréra Silva Júnior, UFPA; Roseane Maria Ribeiro Costa, UFPA. |
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Título: |
Chitosan nanoparticles as a modified diclofenac drug release system. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of Nanoparticle Research, v. 19, n. 8, article 274, 2017. |
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DOI: |
10.1007/s11051-017-3968-6 |
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Idioma: |
Inglês |
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Conteúdo: |
This study evaluated a modified nanostructured release system employing diclofenac as a drug model. Biodegradable chitosan nanoparticles were prepared with chitosan concentrations between 0.5 and 0.8% ( w/ v) by template polymerization method using methacrylic acid in aqueous solution. Chitosan-poly(methacrylic acid) (CS-PMAA) nanoparticles showed uniform size around 50?100 nm, homogeneous morphology, and spherical shape. Raw material and chitosan nanoparticles were characterized by thermal analysis, Fourier transform infrared spectroscopy (FT-IR), and transmission electron microscopy (TEM), confirming the interaction between chitosan and methacrylic acid during nanoparticles preparation. Diclofenac sorption on the chitosan nanoparticles surface was achieved by incubation in water/ethanol (1:1) drug solution in concentrations of 0.5 and 0.8 mg/mL. The diclofenac amount sorbed per gram of CS-PMAA nanoparticles, when in a 0.5 mg/mL sodium diclofenac solution, was as follows: 12.93, 15, 20.87, and 29.63 mg/g for CS-PMAA nanoparticles 0.5, 0.6, 0.7, and 0.8% ( w/ v), respectively. When a 0.8 mg/mL sodium diclofenac solution was used, higher sorption efficiencies were obtained: For CS-PMAA nanoparticles with chitosan concentrations of 0.5, 0.6, 0.7, and 0.8% ( w/ v), the sorption efficiencies were 33.39, 49.58, 55.23, and 67.2 mg/g, respectively. Diclofenac sorption kinetics followed a second-order kinetics. Drug release from nanoparticles occurred in a period of up to 48 h and obeyed Korsmeyer-Peppas model, which was characterized mainly by Fickian diffusion transport. MenosThis study evaluated a modified nanostructured release system employing diclofenac as a drug model. Biodegradable chitosan nanoparticles were prepared with chitosan concentrations between 0.5 and 0.8% ( w/ v) by template polymerization method using methacrylic acid in aqueous solution. Chitosan-poly(methacrylic acid) (CS-PMAA) nanoparticles showed uniform size around 50?100 nm, homogeneous morphology, and spherical shape. Raw material and chitosan nanoparticles were characterized by thermal analysis, Fourier transform infrared spectroscopy (FT-IR), and transmission electron microscopy (TEM), confirming the interaction between chitosan and methacrylic acid during nanoparticles preparation. Diclofenac sorption on the chitosan nanoparticles surface was achieved by incubation in water/ethanol (1:1) drug solution in concentrations of 0.5 and 0.8 mg/mL. The diclofenac amount sorbed per gram of CS-PMAA nanoparticles, when in a 0.5 mg/mL sodium diclofenac solution, was as follows: 12.93, 15, 20.87, and 29.63 mg/g for CS-PMAA nanoparticles 0.5, 0.6, 0.7, and 0.8% ( w/ v), respectively. When a 0.8 mg/mL sodium diclofenac solution was used, higher sorption efficiencies were obtained: For CS-PMAA nanoparticles with chitosan concentrations of 0.5, 0.6, 0.7, and 0.8% ( w/ v), the sorption efficiencies were 33.39, 49.58, 55.23, and 67.2 mg/g, respectively. Diclofenac sorption kinetics followed a second-order kinetics. Drug release from nanoparticles occurred in a period of up to 48 h and o... Mostrar Tudo |
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Palavras-Chave: |
Biopolímero; Nanopartícula; Nanotecnologia; Quitosana. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02347naa a2200253 a 4500
001 2075279
005 2022-05-20
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1007/s11051-017-3968-6$2DOI
100 1 $aDUARTE JUNIOR, A. P.
245 $aChitosan nanoparticles as a modified diclofenac drug release system.$h[electronic resource]
260 $c2017
520 $aThis study evaluated a modified nanostructured release system employing diclofenac as a drug model. Biodegradable chitosan nanoparticles were prepared with chitosan concentrations between 0.5 and 0.8% ( w/ v) by template polymerization method using methacrylic acid in aqueous solution. Chitosan-poly(methacrylic acid) (CS-PMAA) nanoparticles showed uniform size around 50?100 nm, homogeneous morphology, and spherical shape. Raw material and chitosan nanoparticles were characterized by thermal analysis, Fourier transform infrared spectroscopy (FT-IR), and transmission electron microscopy (TEM), confirming the interaction between chitosan and methacrylic acid during nanoparticles preparation. Diclofenac sorption on the chitosan nanoparticles surface was achieved by incubation in water/ethanol (1:1) drug solution in concentrations of 0.5 and 0.8 mg/mL. The diclofenac amount sorbed per gram of CS-PMAA nanoparticles, when in a 0.5 mg/mL sodium diclofenac solution, was as follows: 12.93, 15, 20.87, and 29.63 mg/g for CS-PMAA nanoparticles 0.5, 0.6, 0.7, and 0.8% ( w/ v), respectively. When a 0.8 mg/mL sodium diclofenac solution was used, higher sorption efficiencies were obtained: For CS-PMAA nanoparticles with chitosan concentrations of 0.5, 0.6, 0.7, and 0.8% ( w/ v), the sorption efficiencies were 33.39, 49.58, 55.23, and 67.2 mg/g, respectively. Diclofenac sorption kinetics followed a second-order kinetics. Drug release from nanoparticles occurred in a period of up to 48 h and obeyed Korsmeyer-Peppas model, which was characterized mainly by Fickian diffusion transport.
653 $aBiopolímero
653 $aNanopartícula
653 $aNanotecnologia
653 $aQuitosana
700 1 $aTAVARES, E. J. M.
700 1 $aALVES, T. V. G.
700 1 $aMOURA, M. R. de
700 1 $aCOSTA, C. E. F. da
700 1 $aSILVA JÚNIOR, J. O. C.
700 1 $aCOSTA, R. M. R.
773 $tJournal of Nanoparticle Research$gv. 19, n. 8, article 274, 2017.
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