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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
02/06/2015 |
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Data da última atualização: |
23/02/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AGUIAR JUNIOR, T. R.; RASERA, K.; PARRON, L. M.; BRITOD, A. G.; FERREIRA, M. T. |
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Afiliação: |
T.R. Aguiar Junior, UFPR; K. Rasera, UFPR; LUCILIA MARIA PARRON VARGAS, CNPF; A.G. Britod, Univesity of Lisbon; M.T. Ferreira, University of Lisbon. |
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Título: |
Nutrient removal effectiveness by riparian buffer zones in rural temperate watersheds: the impact of no-till crops practices. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Agricultural Water Management, v. 149, p. 74-80, 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
tRiparian buffer zones have the potential to capture chemical contaminants and to mitigate detrimentalside-effects in aquatic ecosystems derived from excess fertilizers used in agro-food production. No-tillfarming systems are well known agricultural practices and are widely used in temperate areas. In thatregard, different settings and widths of riparian buffer zones (12, 24, 36, 48 and 60 m) with woody veg-etation, shrubs or grasses were assessed. The methodology was comprised of the evaluation of a largenumber of experimental sites and the sampling was conducted after the first rain period and respectivefertilizer applications. The results point to the fact that effectiveness is largely controlled by buffer zonewidth and vegetation type. Indeed, buffer zones with 60 m width composed of woody soils were moreeffective in phosphorus (99.9%) and nitrogen (99.9%) removal when compared to shrub (66.4% and 83.9%,respectively) or grass vegetation (52.9% and 61.6%, respectively) areas. Woody vegetation has deep roo-ting systems and woody soils have a higher content of organic matter when compared to grass and shrubsareas. |
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Thesagro: |
Água; Clima Temperado; Contaminação; Fósforo; Nitrogênio; Nutriente; Plantio Direto. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01879naa a2200253 a 4500
001 2016876
005 2016-02-23
008 2015 bl uuuu u00u1 u #d
100 1 $aAGUIAR JUNIOR, T. R.
245 $aNutrient removal effectiveness by riparian buffer zones in rural temperate watersheds$bthe impact of no-till crops practices.$h[electronic resource]
260 $c2015
520 $atRiparian buffer zones have the potential to capture chemical contaminants and to mitigate detrimentalside-effects in aquatic ecosystems derived from excess fertilizers used in agro-food production. No-tillfarming systems are well known agricultural practices and are widely used in temperate areas. In thatregard, different settings and widths of riparian buffer zones (12, 24, 36, 48 and 60 m) with woody veg-etation, shrubs or grasses were assessed. The methodology was comprised of the evaluation of a largenumber of experimental sites and the sampling was conducted after the first rain period and respectivefertilizer applications. The results point to the fact that effectiveness is largely controlled by buffer zonewidth and vegetation type. Indeed, buffer zones with 60 m width composed of woody soils were moreeffective in phosphorus (99.9%) and nitrogen (99.9%) removal when compared to shrub (66.4% and 83.9%,respectively) or grass vegetation (52.9% and 61.6%, respectively) areas. Woody vegetation has deep roo-ting systems and woody soils have a higher content of organic matter when compared to grass and shrubsareas.
650 $aÁgua
650 $aClima Temperado
650 $aContaminação
650 $aFósforo
650 $aNitrogênio
650 $aNutriente
650 $aPlantio Direto
700 1 $aRASERA, K.
700 1 $aPARRON, L. M.
700 1 $aBRITOD, A. G.
700 1 $aFERREIRA, M. T.
773 $tAgricultural Water Management$gv. 149, p. 74-80, 2015.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
19/11/2004 |
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Data da última atualização: |
08/03/2010 |
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Autoria: |
BUGS, M. R.; FORATO, L. A.; BORTOLETO-BUGS, R. K.; FISCHER, H.; MASCARENHAS, Y. P.; WARD, R. J.; COLNAGO, L. A. |
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Título: |
Spectroscopy characterization and structural modeling of prolamin from maize and pearl millet. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
European Biophysics Journal, New York, v. 33, p. 335-343, 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
Biophysical methods and structural modeling techniques have been used to characterize the prolamins from maize (Zea mays) and pearl millet (Pennisetum americanum). The alcohol-soluble prolamin from maize, called zein, was extracted using a simple protocol and purified by gel filtration in a 70% ethanol solution. Two protein fractions were purified from seed extracts of pearl millet with molecular weights of 25.5 and 7 kDa, as estimated by SDS-PAGE. The high molecular weight protein corresponds to pennisetin, wich has a high helical content both in solution and the solid state, as demonstrated by circular dichroism and Fourier transform infrared spectra. |
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Palavras-Chave: |
Dicroísmo circular; Dinâmico; Modelo molecular. |
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Thesagro: |
Zeína. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01348naa a2200241 a 4500
001 1028682
005 2010-03-08
008 2004 bl --- 0-- u #d
100 1 $aBUGS, M. R.
245 $aSpectroscopy characterization and structural modeling of prolamin from maize and pearl millet.
260 $c2004
520 $aBiophysical methods and structural modeling techniques have been used to characterize the prolamins from maize (Zea mays) and pearl millet (Pennisetum americanum). The alcohol-soluble prolamin from maize, called zein, was extracted using a simple protocol and purified by gel filtration in a 70% ethanol solution. Two protein fractions were purified from seed extracts of pearl millet with molecular weights of 25.5 and 7 kDa, as estimated by SDS-PAGE. The high molecular weight protein corresponds to pennisetin, wich has a high helical content both in solution and the solid state, as demonstrated by circular dichroism and Fourier transform infrared spectra.
650 $aZeína
653 $aDicroísmo circular
653 $aDinâmico
653 $aModelo molecular
700 1 $aFORATO, L. A.
700 1 $aBORTOLETO-BUGS, R. K.
700 1 $aFISCHER, H.
700 1 $aMASCARENHAS, Y. P.
700 1 $aWARD, R. J.
700 1 $aCOLNAGO, L. A.
773 $tEuropean Biophysics Journal, New York$gv. 33, p. 335-343, 2004.
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