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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
22/11/2002 |
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Data da última atualização: |
22/11/2002 |
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Autoria: |
MOURA FILHO, W. |
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Título: |
Characterization of the physical, chemical, and micromorphological changes engendered by the cultivation of a soil in the Triangulo of Minas Gerais, Brazil. |
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Ano de publicação: |
1968 |
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Fonte/Imprenta: |
Raleigh: Faculty of North Carolina State University, 1968. |
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Páginas: |
55p. |
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Idioma: |
Inglês |
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Notas: |
M.Sc. Thesis. |
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Conteúdo: |
Three Latosol Roxo (Eutrustox) soil profiles representing different management systems and lengths of cultivation were selected, described, and sampled in the Triangulo area of the state of Minas Gerais, Brazil. In addition to chemical and physical characterization, micromorphological observations and field measurements of the infiltration were conducted. Results from such studies supported the hypothesis that the "hardpan" found in some cultivated fields is caused by the reduction in the total and non-capillary porosities upon the use of machinery in the cultivation practices. The solum thickness, high amounts of colloidal clay (particles less than 0.2u in diameter), and large quantities of kaolinite and gibbsite in this size fraction of these soils indicates a high degree of weathering. The soils contained from 19.6 to 23,7% free iron oxide as determined by the sodium dithionite-citrate procedure. The soils could not be completely dispersed unless the free iron oxide was removed. Distribution of the water dispersed clay in the profiles indicated some clay translocation after the cleasring of the forest. Content of exchangeable bases and pH values were much higher than expected in highly weathered soils. Microscopic studies indicated that the semiconcentric characteristics of what appears to be free iron oxide in the fabric of the fine granular peds could be the explanation for this deviation from the expected trends of the chemical analysis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01936nam a2200133 a 4500
001 1331572
005 2002-11-22
008 1968 bl uuuu m 00u1 u #d
100 1 $aMOURA FILHO, W.
245 $aCharacterization of the physical, chemical, and micromorphological changes engendered by the cultivation of a soil in the Triangulo of Minas Gerais, Brazil.
260 $aRaleigh: Faculty of North Carolina State University$c1968
300 $a55p.
500 $aM.Sc. Thesis.
520 $aThree Latosol Roxo (Eutrustox) soil profiles representing different management systems and lengths of cultivation were selected, described, and sampled in the Triangulo area of the state of Minas Gerais, Brazil. In addition to chemical and physical characterization, micromorphological observations and field measurements of the infiltration were conducted. Results from such studies supported the hypothesis that the "hardpan" found in some cultivated fields is caused by the reduction in the total and non-capillary porosities upon the use of machinery in the cultivation practices. The solum thickness, high amounts of colloidal clay (particles less than 0.2u in diameter), and large quantities of kaolinite and gibbsite in this size fraction of these soils indicates a high degree of weathering. The soils contained from 19.6 to 23,7% free iron oxide as determined by the sodium dithionite-citrate procedure. The soils could not be completely dispersed unless the free iron oxide was removed. Distribution of the water dispersed clay in the profiles indicated some clay translocation after the cleasring of the forest. Content of exchangeable bases and pH values were much higher than expected in highly weathered soils. Microscopic studies indicated that the semiconcentric characteristics of what appears to be free iron oxide in the fabric of the fine granular peds could be the explanation for this deviation from the expected trends of the chemical analysis.
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Registro original: |
Embrapa Solos (CNPS) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
14/04/2011 |
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Data da última atualização: |
05/02/2024 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
PEREIRA, M. M.; BRANDAO, H. de M.; RAPOSO, N. R. B.; QUINTAO, C. C. R.; TEIXEIRA, E. DE M.; SILVA, S. R. DA; MOREIRA, A. P.; CAMARGO, L. S. de A.; MATTOSO, L. H. C. |
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Afiliação: |
MICHELE MUNCK PEREIRA, UFJF; HUMBERTO DE MELLO BRANDAO, CNPGL; NADIA REZENDE BARBOSA RAPOSO, UFJF; CAROLINA CAPOBIANGO ROMANO QUINTAO, CNPGL; ELIANGELA DE MORAES TEIXEIRA; SAULO RIBEIRO DA SILVA, UFJF; ANA PAULA MOREIRA, UFJF; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA. |
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Título: |
Cell viability in bovine dermal fibroblast cells exposed by nanocellulose fibers. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: SEMINÁRIO INTERNACIONAL DE NANOTECNOLOGIA, SOCIEDADE E MEIO AMBIENTE, 7., 2010, Rio de Janeiro. Resumos... Rio de Janeiro: FIOCRUZ, 2010. |
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Idioma: |
Inglês |
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Palavras-Chave: |
Fibroblasto. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 00730nam a2200205 a 4500
001 1885894
005 2024-02-05
008 2010 bl uuuu u00u1 u #d
100 1 $aPEREIRA, M. M.
245 $aCell viability in bovine dermal fibroblast cells exposed by nanocellulose fibers.$h[electronic resource]
260 $aIn: SEMINÁRIO INTERNACIONAL DE NANOTECNOLOGIA, SOCIEDADE E MEIO AMBIENTE, 7., 2010, Rio de Janeiro. Resumos... Rio de Janeiro: FIOCRUZ$c2010
653 $aFibroblasto
700 1 $aBRANDAO, H. de M.
700 1 $aRAPOSO, N. R. B.
700 1 $aQUINTAO, C. C. R.
700 1 $aTEIXEIRA, E. DE M.
700 1 $aSILVA, S. R. DA
700 1 $aMOREIRA, A. P.
700 1 $aCAMARGO, L. S. de A.
700 1 $aMATTOSO, L. H. C.
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