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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
29/04/2003 |
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Data da última atualização: |
29/04/2003 |
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Autoria: |
ASSIS, O. B. G.; BERNARDES-FILHO, R.; VIEIRA, D. C.; CAMPANA FILHO, S. P. |
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Afiliação: |
Embrapa Instrumentação Agropecuária, São Carlos, SP; USP-Interunidades de Ciência e Engenharia de Materiais, São Carlos, SP; USP-Instituto de Química de São Carlos, São Carlos, SP. |
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Título: |
AFM characterization of chitosan self-assembled films. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
International Journal of Polymeric Materials, London, v. 51, n. 7, p. 633-638, Jul. 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
Atomic force microscopy (AFM) was used to examine the surface structure of self-assbled films obtained from water-soluble chitasan rich solution precursor. The film war supported onto functionalized glass slides resulting in a mountain-and=valley structure. This feature is attributed as resulting of the experimental condition where agglomeration of molecules in solution may occur. The film height does not exceed 20nm with medium pore size of approximately 12 nm. This range of porosity is suitable for nanofiltration applications. |
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Palavras-Chave: |
AFM; Microscopia de força atômica; Self-assmbled; Surface characterization; Thin-film. |
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Thesaurus Nal: |
chitosan. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01195naa a2200229 a 4500
001 1024633
005 2003-04-29
008 2002 bl --- 0-- u #d
100 1 $aASSIS, O. B. G.
245 $aAFM characterization of chitosan self-assembled films.
260 $c2002
520 $aAtomic force microscopy (AFM) was used to examine the surface structure of self-assbled films obtained from water-soluble chitasan rich solution precursor. The film war supported onto functionalized glass slides resulting in a mountain-and=valley structure. This feature is attributed as resulting of the experimental condition where agglomeration of molecules in solution may occur. The film height does not exceed 20nm with medium pore size of approximately 12 nm. This range of porosity is suitable for nanofiltration applications.
650 $achitosan
653 $aAFM
653 $aMicroscopia de força atômica
653 $aSelf-assmbled
653 $aSurface characterization
653 $aThin-film
700 1 $aBERNARDES-FILHO, R.
700 1 $aVIEIRA, D. C.
700 1 $aCAMPANA FILHO, S. P.
773 $tInternational Journal of Polymeric Materials, London$gv. 51, n. 7, p. 633-638, Jul. 2002.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
25/02/2015 |
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Data da última atualização: |
25/02/2015 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SANTANA, M. S.; GIONGO, V.; BRANDÃO, S. S.; JESUS, T. S.; MENEZES, R. S. C.; CUNHA, T. J. F. |
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Afiliação: |
M. S. SANTANA, UFPE; VANDERLISE GIONGO, CPATSA; TONY JARBAS FERREIRA CUNHA, CPATSA. |
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Título: |
Carbon stock change due to land use in argisols on pernambucano-brazillan semiarid |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: CONGRESO LATINOAMERICANO DE LA CIENCIA DEL SUELO, 20.; CONGRESO PERUANO DE LA CIENCIA DEL SUELO, 16., 2014, Cusco. Educar para preservar el suelo y conservar la vida en la tierra. Cusco: Centro de Convenciones de la Municipalidad del Cusco, 2014. |
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Descrição Física: |
1 Pen drive. |
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Idioma: |
Português |
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Conteúdo: |
Carbon stored in soils depends on the type of vegetation and management applied. Native vegetation removed for the installation of pastures and grassland affects carbon stocks in the soil.Argisols are one the most used type of soils in agriculture, due its excellent physical and chemical characteristics. Asses carbon stored in these soils under different land uses and understand the dynamics of the C element in ecosystems is important. In this study we examined four types of vegetation cover in three sites on interior of Pernambuco state in Brazil. Trenches of 0.7 x 0.7 m with 0.4 m deep were open and soil samples were collected at 0-10, 10-20, 20-30 and 30-40 cm layers to determine carbon content and soil density. Carbon concentrations were determined by dry combustion using a CHN elemental analyzer (CN TruSpec LECO® 2006, St. Joseph, USA). Land use change altered carbon stocks in soil, dense caatinga presented higher stocks than open caatinga, grassland and agriculture. In the 0-10 cm layer expressed biggest difference in C stocks in different vegetation cover. |
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Palavras-Chave: |
Estoque de carbono; Patagem; Uso do solo. |
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Thesagro: |
Caatinga; Cobertura Vegetal; Manejo do Solo; Recurso natural; Solo; Vegetação nativa. |
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Thesaurus NAL: |
Soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/118707/1/Tony-cpatsa.pdf
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Marc: |
LEADER 02084nam a2200301 a 4500
001 2009787
005 2015-02-25
008 2014 bl uuuu u00u1 u #d
100 1 $aSANTANA, M. S.
245 $aCarbon stock change due to land use in argisols on pernambucano-brazillan semiarid
260 $aIn: CONGRESO LATINOAMERICANO DE LA CIENCIA DEL SUELO, 20.; CONGRESO PERUANO DE LA CIENCIA DEL SUELO, 16., 2014, Cusco. Educar para preservar el suelo y conservar la vida en la tierra. Cusco: Centro de Convenciones de la Municipalidad del Cusco$c2014
300 $c1 Pen drive.
520 $aCarbon stored in soils depends on the type of vegetation and management applied. Native vegetation removed for the installation of pastures and grassland affects carbon stocks in the soil.Argisols are one the most used type of soils in agriculture, due its excellent physical and chemical characteristics. Asses carbon stored in these soils under different land uses and understand the dynamics of the C element in ecosystems is important. In this study we examined four types of vegetation cover in three sites on interior of Pernambuco state in Brazil. Trenches of 0.7 x 0.7 m with 0.4 m deep were open and soil samples were collected at 0-10, 10-20, 20-30 and 30-40 cm layers to determine carbon content and soil density. Carbon concentrations were determined by dry combustion using a CHN elemental analyzer (CN TruSpec LECO® 2006, St. Joseph, USA). Land use change altered carbon stocks in soil, dense caatinga presented higher stocks than open caatinga, grassland and agriculture. In the 0-10 cm layer expressed biggest difference in C stocks in different vegetation cover.
650 $aSoil
650 $aCaatinga
650 $aCobertura Vegetal
650 $aManejo do Solo
650 $aRecurso natural
650 $aSolo
650 $aVegetação nativa
653 $aEstoque de carbono
653 $aPatagem
653 $aUso do solo
700 1 $aGIONGO, V.
700 1 $aBRANDÃO, S. S.
700 1 $aJESUS, T. S.
700 1 $aMENEZES, R. S. C.
700 1 $aCUNHA, T. J. F.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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