| |
|
|
| Registros recuperados : 15 | |
| 6. |  | TEIXEIRA, F. de M.; CORREA, A. C.; MANZOLI, A.; LEITE, F. de L.; RIBEIRO, C.; MATTOSO, L. H. C. Naturally colored cotton cellulose nanofibers: preparation and characterization. In: ENCONTRO DA SOCIEDADE BRASILEIRA DE PESQUISA EM MATERIAIS - SBPMat, 7., 2008, Guarujá; BRAZILIAN MRS MEETING, 7., 2008, Guarujá. Abstracts... Rio de Janeiro: SBPMat, 2008. não paginado. 1CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
|    |
| 7. | | IMASATO, H.; NASCENTE, P. A. de P.; HERRMANN JUNIOR, P. S. de P.; LEITE, F. de L.; RIBELATTO, J. C.; ANDRESA, J. S.; RODRIGUES-FILHO, U. P. Hemin and hemoglobin monomer immobilization and characterization on SIO2/SI water surface. In: ENCONTRO DA SBPMAT, 5.; BRAZILIAN MRS MEETING, 5TH., 2006, Florianópolis. Final program... Florianópolis: [s. n.], 2006. p. 128. 1CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
| |
| 8. | | LEITE, F. DE L.; MARTIN-NETO, L.; MATTOSO, L. H. C.; CUNHA, T. J. F. DA; MADARI, B.; SANTOS, G. A.; HERRMANN, P. S. DE P. Study of Amazon Anthropogenic humic acid by atomic force microscopy (AFM) In: INTERNATIONAL MEETING OF INTERNATIONAL HUMIC SUBSTANCES SOCIETY. -- IHSS, 12, São Pedro, SP, 2004. Humic substances and soil and water environment. Abstracts...[São Carlos], SP: Embrapa Instrumentação Agropecuária, 2004. p. 29| Biblioteca(s): Embrapa Instrumentação. |
| |
| 9. | | LEITE, F. de L.; CUNHA, T. J. F. da; MARTIN-NETO, L.; MADARI, B.; SANTOS, G. A.; MATTOSO, L. H. C.; HERRMANN, P. S. de P. Study of amazon antropogenic humic acid by Atomic Force Microscopy (AFM). In: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 318-320. CLASSIFICAÇÃO CDD: 630| Biblioteca(s): Embrapa Instrumentação. |
| |
| 10. | | CONSOLIN FILHO, N.; LEITE, F. de L.; CARVALHO, E. R.; VENÂNCIO, E. C.; VAZ, V. M. P.; MATTOSO, L. H. C. Study of poly(o-ethoxyaniline) interactions with herbicides and evaluation of conductive polymer potential used in electrochemical sensors. Journal of the Brazilian Chemical Society, São Paulo, v. 18, n. 3, p. 577-584, 2007.| Biblioteca(s): Embrapa Instrumentação. |
| |
| 11. | | CARDOSO, M. R.; SANTOS JUNIOR, D. S. dos; LEITE, F. de L.; MATTOSO, L. H. C.; OLIVEIRA JUNIOR, O. N. de; MENDONÇA, C. R. Surface-relief gratings and photoinduced birefrigerance in layer-by-layer films of dendrimer with azopolymer. In: ENCONTRO DA SOCIEDADE BRASILEIRA DE PESQUISA EM MATERIAIS, SBPMAT, 4., 2005, Recife. Final program. Recife: SBPMat, 2005. 1 CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
| |
| 12. | | MORAES, A. de S.; GOES, T. S. de; HAUSEN, M.; MORAIS, J. P. S.; ROSA, M. de F.; MENEZES, A. J. de; MATTOSO, L. H. C.; LEITE, F. de L. Caracterização morfológica de nanocristais de celulose por microscopia de força atômica. Revista matéria, [S. l.], v. 21, n. 2, p. 532-540, 2016.| Biblioteca(s): Embrapa Agroindústria Tropical; Embrapa Instrumentação. |
|  |
| 13. | | WIZIACK, N. K. L.; SCAPULATEMPO NETO, C.; MELENDEZ, M. E.; SANTIS, J. J. de; SOARES, A. C.; SOARES, J. C.; CORREA, D. S.; MATTOSO, L. H. C.; CARVALHO, A. L.; OLIVEIRA JR, O. N.; LEITE, F. de L. Evaluation of p53 biosensor for use in early non-invasive detection of cancer. In: BRAZILIAN MRS MEETING, 14., 2015, Rio de Janeiro. Program book... Rio de Janeiro: SBPMat, 2015. 2 p.| Biblioteca(s): Embrapa Instrumentação. |
|  |
| 14. | | HERRMANN, P. S. de P.; MASCARENHAS, Y. P.; POLIKARPOV, I.; BALLESTERO, M. R. M.; OLIVEIRA NETO, M. de; LEITE, F. de L.; MATTOSO, L. H. C.; OLIVEIRA, O. N. de. Nanoscale conformational ordering on poly(alkoxyanilines): fractal behavior and thin films formation mechanism. In: ENCONTRO DA SBPMAT, 5.; BRAZILIAN MRS MEETING, 5TH., 2006, Florianópolis. Final program... Florianópolis: [s. n.], 2006. p. 111. 1CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
| |
| 15. | | LEITE, F. de L.; SIMÕES, M. L.; OLIVEIRA NETO, M. de; SAVEDRA, R. M. L.; HERRMANN JUNIOR, P. S. de P.; POLIKARPOV, I.; MARTIN NETO, L.; TRSIC, M.; MATTOSO, L. H. C.; OLIVEIRA JUNIOR, O. N. de. A Nanocarrier charge model for the transport in poly(o-alkoxyanilines) [PTu19]. In: INTERNATIONAL CONFERENCE ON SCIENCE AND TECHNOLOGY OF SYNTHETIC METALS, ICSM, 2008, Porto de Galinhas. Book of Abstracts... [S. l.: s. n.], 2008. p. 61.| Biblioteca(s): Embrapa Instrumentação. |
| |
| Registros recuperados : 15 | |
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
12/08/2004 |
|
Data da última atualização: |
11/09/2007 |
|
Autoria: |
LEITE, F. de L.; CUNHA, T. J. F. da; MARTIN-NETO, L.; MADARI, B.; SANTOS, G. A.; MATTOSO, L. H. C.; HERRMANN, P. S. de P. |
|
Título: |
Study of amazon antropogenic humic acid by Atomic Force Microscopy (AFM). |
|
Ano de publicação: |
2004 |
|
Fonte/Imprenta: |
In: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 318-320. |
|
Idioma: |
Inglês |
|
Notas: |
CLASSIFICAÇÃO CDD: 630 |
|
Conteúdo: |
I. INTRODUCTION
Soil Organic Matter (SOM) play important rule on many aspects of the nature of soil and environmental processes. Humic Substances (HS) are the major organic constituents of soils and aquatic environments and are generated by the microbiological and chemical degradation and transformation of organic matter resulting in chemical structures which are more stable than the starting material (Steverson, 1982). Various studies in the Brazilian Amazon mention the existence of soils having an anthropogenic A horizon (Cunha et al., 2001). These soils, ofien referred to as Amazonian dark earth (or "Terra Preta"), present particular physical and chemical properties. The organic matter present in these soil show high stability and reactivity characteristics (Glaser et al., 2000). The origin of this organic matter is thought to be mostly pyrogenic and is in relation to the domestic/agricultural activity of pre-Columbian populations that colonized the Amazon basin since 3000 B.C. (Denevan, 2001). Because of its high fertility compared to the adjacent soils, it is has been frequently used by
recent populations of lhe Amazon for subsistence agriculture (beans, corn etc.) and/or for production for market sale of a high diversity of products (papaya, coconut, cupuaçu etc.). Since, a better understanding of HS structures would help to determine their origin and genesis reactivity, and role in environmental processes, lhe objective this work was to study lhe Humic Acid (HA) with selected methods in the compared to an adjacent soil that did not have anthropogeni A horizon, using an Atomic Force Microscope (AFM). The purpose of our investigation was to obtain a better understanding of morphology, adsorption and orientation of HA molecules on mica from anthropogenic HA. This microscope can image surfaces with atomic resolution by scanning a sharp tip across the surface at forces smaller than the forces between atoms (Leite et al., 2003). AFM is a scanning probe technique, which has been employed to study the morphologies of humic and fulvic (Plaschke et al., 2002, 1999; Mertig et al., 1999) and it is a powerful tool to characterize small colloids, as well as colloid agglomeration, adsorption onto surfaces, or modification in the morphologies affected by changes in the physical-chemistry properties. MenosI. INTRODUCTION
Soil Organic Matter (SOM) play important rule on many aspects of the nature of soil and environmental processes. Humic Substances (HS) are the major organic constituents of soils and aquatic environments and are generated by the microbiological and chemical degradation and transformation of organic matter resulting in chemical structures which are more stable than the starting material (Steverson, 1982). Various studies in the Brazilian Amazon mention the existence of soils having an anthropogenic A horizon (Cunha et al., 2001). These soils, ofien referred to as Amazonian dark earth (or "Terra Preta"), present particular physical and chemical properties. The organic matter present in these soil show high stability and reactivity characteristics (Glaser et al., 2000). The origin of this organic matter is thought to be mostly pyrogenic and is in relation to the domestic/agricultural activity of pre-Columbian populations that colonized the Amazon basin since 3000 B.C. (Denevan, 2001). Because of its high fertility compared to the adjacent soils, it is has been frequently used by
recent populations of lhe Amazon for subsistence agriculture (beans, corn etc.) and/or for production for market sale of a high diversity of products (papaya, coconut, cupuaçu etc.). Since, a better understanding of HS structures would help to determine their origin and genesis reactivity, and role in environmental processes, lhe objective this work was to study lhe Humic Acid (HA) with... Mostrar Tudo |
|
Palavras-Chave: |
Amazon; anthropogenic soils; Humic acid. |
|
Thesaurus NAL: |
atomic force microscopy. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 03211naa a2200253 a 4500
001 1028564
005 2007-09-11
008 2004 bl --- 0-- u #d
100 1 $aLEITE, F. de L.
245 $aStudy of amazon antropogenic humic acid by Atomic Force Microscopy (AFM).
260 $c2004
500 $aCLASSIFICAÇÃO CDD: 630
520 $aI. INTRODUCTION Soil Organic Matter (SOM) play important rule on many aspects of the nature of soil and environmental processes. Humic Substances (HS) are the major organic constituents of soils and aquatic environments and are generated by the microbiological and chemical degradation and transformation of organic matter resulting in chemical structures which are more stable than the starting material (Steverson, 1982). Various studies in the Brazilian Amazon mention the existence of soils having an anthropogenic A horizon (Cunha et al., 2001). These soils, ofien referred to as Amazonian dark earth (or "Terra Preta"), present particular physical and chemical properties. The organic matter present in these soil show high stability and reactivity characteristics (Glaser et al., 2000). The origin of this organic matter is thought to be mostly pyrogenic and is in relation to the domestic/agricultural activity of pre-Columbian populations that colonized the Amazon basin since 3000 B.C. (Denevan, 2001). Because of its high fertility compared to the adjacent soils, it is has been frequently used by recent populations of lhe Amazon for subsistence agriculture (beans, corn etc.) and/or for production for market sale of a high diversity of products (papaya, coconut, cupuaçu etc.). Since, a better understanding of HS structures would help to determine their origin and genesis reactivity, and role in environmental processes, lhe objective this work was to study lhe Humic Acid (HA) with selected methods in the compared to an adjacent soil that did not have anthropogeni A horizon, using an Atomic Force Microscope (AFM). The purpose of our investigation was to obtain a better understanding of morphology, adsorption and orientation of HA molecules on mica from anthropogenic HA. This microscope can image surfaces with atomic resolution by scanning a sharp tip across the surface at forces smaller than the forces between atoms (Leite et al., 2003). AFM is a scanning probe technique, which has been employed to study the morphologies of humic and fulvic (Plaschke et al., 2002, 1999; Mertig et al., 1999) and it is a powerful tool to characterize small colloids, as well as colloid agglomeration, adsorption onto surfaces, or modification in the morphologies affected by changes in the physical-chemistry properties.
650 $aatomic force microscopy
653 $aAmazon
653 $aanthropogenic soils
653 $aHumic acid
700 1 $aCUNHA, T. J. F. da
700 1 $aMARTIN-NETO, L.
700 1 $aMADARI, B.
700 1 $aSANTOS, G. A.
700 1 $aMATTOSO, L. H. C.
700 1 $aHERRMANN, P. S. de P.
773 $tIn: MARTIN-NETO, L.; MILORI, D.M.B.P.; SILVA, W.T.L. (Ed.). Humic substances and soil and water environment: International Meeting of IHSS, 12. São Carlos : Embrapa Instrumentação Agropecuária, 2004. p. 318-320.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
