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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Trigo; Embrapa Unidades Centrais. |
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Data corrente: |
14/08/2003 |
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Data da última atualização: |
21/07/2011 |
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Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
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Autoria: |
ROMERA, A. P. de M.; MELO FILHO, G. A. de; MELO, C. M. S.; RICHETTI, A. |
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Título: |
Avaliação dos impactos ambientais e econômicos do controle químico do percevejo-barriga-verde (Dichelops melacanthus) em trigo e milho safrinha. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Dourados: Embrapa Agropecuária Oeste : UFMS, 2002. |
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Páginas: |
31 p. |
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Série: |
(Embrapa Agropecuária Oeste. Documentos, 50). |
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Idioma: |
Português |
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Conteúdo: |
O percevejo-Barriga-Verde: descrição da praga, danos causados às plantas; Controle químico do percevejo; Metodologia: avaliação do impacto econômico, avaliação do impacçto ambiental; Resultados: avaliação do impacto econômico, avaliação do impacto ambiental, alcance de tecnologia, eficiência tecnológica; conservação ambiental, recuperação ambiental, avaliação agregada do impacto ambiental; conclusões. |
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Thesagro: |
Controle Químico; Impacto Ambiental; Milho; Percevejo; Trigo; Triticum Aestivum; Zea Mays. |
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Thesaurus Nal: |
corn; wheat. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38277/1/DOC200250.pdf
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Marc: |
LEADER 01257nam a2200277 a 4500
001 1246105
005 2011-07-21
008 2002 bl uuuu u0uu1 u #d
100 1 $aROMERA, A. P. de M.
245 $aAvaliação dos impactos ambientais e econômicos do controle químico do percevejo-barriga-verde (Dichelops melacanthus) em trigo e milho safrinha.
260 $aDourados: Embrapa Agropecuária Oeste : UFMS$c2002
300 $a31 p.
490 $a(Embrapa Agropecuária Oeste. Documentos, 50).
520 $aO percevejo-Barriga-Verde: descrição da praga, danos causados às plantas; Controle químico do percevejo; Metodologia: avaliação do impacto econômico, avaliação do impacçto ambiental; Resultados: avaliação do impacto econômico, avaliação do impacto ambiental, alcance de tecnologia, eficiência tecnológica; conservação ambiental, recuperação ambiental, avaliação agregada do impacto ambiental; conclusões.
650 $acorn
650 $awheat
650 $aControle Químico
650 $aImpacto Ambiental
650 $aMilho
650 $aPercevejo
650 $aTrigo
650 $aTriticum Aestivum
650 $aZea Mays
700 1 $aMELO FILHO, G. A. de
700 1 $aMELO, C. M. S.
700 1 $aRICHETTI, A.
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Registro original: |
Embrapa Agropecuária Oeste (CPAO) |
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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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