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| Registros recuperados : 20 | |
| 1. |  | BRAUNER, C. C.; KRAUSE, A. R. T.; LIMA, M. E.; XAVIER, E. G.; SCHNEIDER, A.; SCHMITT, E.; SCHWEGLER, E.; WESCHENFELDER, M. M.; MONTAGNER, P.; DEL PINO, F. A. B.; CORRÊA, M. N.; PFEIFER, L. F. M. Resumption of postpartum ovarian cyclicity in dairy cows and its relationship with acute phase proteins, uterine health and lipolysis during the transition period. In: ASAS JOINT ANNUAL MEETING. Journal of Dairy Science, v. 96, Suppl. 1, 2013.| Biblioteca(s): Embrapa Rondônia. |
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| 2. | | ACOSTA, D. A. V.; PFEIFER, L. F. M.; SCHMITT, E.; SCHNEIDER, A.; SILVEIRA, P. A. S.; JACOMETO, C. B.; BRAUNER, C. C.; RABASSA, R. V.; CORRÊA, M. N.; PINO, F. A. B. D. Effect of prepartum somatotropin injection in late pregnant Holstein heifers with high body condition score on metabolic parameters, resumption of ovulation and milk production. Canadian Journal of Animal Science, Ottawa, v. 93, p. 287-292, 2013.| Biblioteca(s): Embrapa Rondônia. |
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| 3. | | WESCHENFELDER, M. M.; MONTAGNER, P.; KRAUSE, A. R.; SCHWEGLER, E.; DEL PINO, F. A. B.; XAVIER, E. G.; ROSA, F. T.; SCHMITT, E.; SCHNEIDER, A.; BRAUNER, C. C.; CORREA, M. N. The influence of bPL and IGF-1 on the negative energy balance during the pre-parturition period of dairy cows. In: ASAS JOINT ANNUAL MEETING. Journal of Dairy Science, v. 96, Suppl. 1, 2013.| Biblioteca(s): Embrapa Rondônia. |
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| 4. | | MONTAGNER, P.; SCHWEGLER, E.; WESCHENFELDER, M. M.; KRAUSE, A. R.; ALVARADO, J.; MAFFI, A. S.; BRAUNER, C. C.; SCHNEIDER, A.; SCHMITT, E.; XAVIER, E. G.; MARTINS, C. F.; RABASSA, V. R.; DEL PINO, F. A. B.; CORREA, M. N. Prepartum body condition score changes and the secretion of acute phase proteins in dairy cows. In: ASAS JOINT ANNUAL MEETING. Journal of Dairy Science, v. 96, Suppl. 1, 2013.| Biblioteca(s): Embrapa Rondônia. |
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| 5. | | MORAES, J. C. F.; SOUZA, C. J. H. de; BRAUNER, C. C.; PIMENTEL, M. A.; BENAVIDES, M. V.; FERRAZ, J. B. S. Utilização do escore de condição corporal pós-parto na identificação de vacas de corte mais férteis criadas em sistemas extensivos. Archivos Latinoamericanos de Producción Animal, Maracaibo, v. 21, n. 3, p. 149-155, 2013.| Biblioteca(s): Embrapa Pecuária Sul; Embrapa Pesca e Aquicultura. |
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| 6. | | ROSA, F. da; MONTAGNER, P.; SCHMITT, E.; SCHNEIDER, A.; BRAUNER, C. C.; SCHWEGLER, E.; WESCHENFELDER, M.; KRAUSE, A. R.; DEL PINO, F.; CORRÊA, M. N. Non-esterified fatty acids and its relationship with mediators of the acute phase response in dairy cows. In: AMERICAN SOCIETY OF ANIMAL SCIENCE, 2013, Des Moines, Iowa. Abstracts... IOWA: ASAS, 2012. Publicado em: Journal of Animal Science, v. 91, Supl. 2, 2012. p. 131, Resumo: P126.| Biblioteca(s): Embrapa Rondônia. |
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| 8. | | BRAUNER, C. C.; PIMENTEL, M. A.; MENEZES, L. de M.; MACHADO, J. P. M.; MORAES, J. C. F. Effect of short period feed supplementation during early lactation on performance of cows and calves raised in extensive system. Revista Brasileira de Zootecnia, Viçosa, v. 40, n. 6, p. 1381-1387, jun. 2011.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 9. | | MENEZES, L. M.; BRAUNER, C. C.; PIMENTEL, M. A.; MORAES, J. C. F.; AMARAL, F. A. Desempenho reprodutivo de novilhas de corte expostas a diferentes métodos de bioestimulação. Archivos de Zootecnia, Cordoba, v. 60, n. 232, p. 1347-1350, Dec. 2011. Nota breve.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 10. | | MENEZES, L. de M.; BRAUNER, C. C.; PIMENTEL, M. A.; AMARAL, F. A. do; MACHADO, J. P. M.; MORAES, J. C. F. Métodos de bioestimulação sexual e desempenho reprodutivo de novilhas de corte. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 46., 2009, Maringá. Anais... Maringá: Universidade Estadual de Maringá: SBZ, 2009. 1 CD-ROM.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 11. | | MENEZES, L. de M.; BRAUNER, C. C.; PAPPEN, F. G.; MACHADO, J. P. M.; MORAES, J. C. F.; PIMENTEL, M. A. Efeito do frame e da altura de garupa sobre o desempenho reprodutivo de novilhas Braford. Veterinária em Foco, Canoas, v. 6, n. 2, p. 116-120, jan./jun. 2009.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 13. | | BRAUNER, C. C.; PIMENTEL, M. A.; LEMES, J. S.; PIMENTEL, C. A.; MORAES, J. C. F. Desempenho reprodutivo pós-parto de vacas de corte submetidas a indução/sincronização de cio. Revista Brasileira de Zootecnia, Viçosa, v. 38, n. 1, p. 99-103, 2009.| Biblioteca(s): Embrapa Pecuária Sul. |
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| 16. | | FORSTER, K. M.; PIMENTEL, M. A.; BRAUNER, C. C.; RIBEIRO, M. E. R.; MORAES, J. C. F. Produção de leite em bovinos de corte 14: composição do leite em vacas das raças Hereford e Aberdeen Angus. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 44., 2007, Jaboticabal. O avanço científico e tecnológico na produção animal: anais. Jaboticabal: Sociedade Brasileira de Zootecnia: UNESP, Faculdade de Ciências Agrárias e Veterinárias, 2007. 1 CD-ROM.| Biblioteca(s): Embrapa Pecuária Sul. |
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| Registros recuperados : 20 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Semiárido; Embrapa Solos. |
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Data corrente: |
05/01/2007 |
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Data da última atualização: |
16/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
NOVOTNY, E. H.; AZEVEDO, E. R. de; BONAGAMBA, T. J.; CUNHA, T. J. F.; MADARI, B. E.; BENITES, V. de M.; HAYES, M. H. B. |
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Afiliação: |
ETELVINO HENRIQUE NOVOTNY, CNPS; TONY JARBAS FERREIRA CUNHA, CPATSA; BEATA EMOKE MADARI, CNPAF; VINICIUS DE MELO BENITES, CNPS. |
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Título: |
Studies of the compositions of humic acids from Amazonian Dark Earth soils. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Environmental Science & Technology, v. 41, n. 2, p. 400-405, jan. 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
The compositions of humic acids (HAs) isolated from cultivated and forested "Terra Preta de Índio" or Amazonian Dark Earth soils (anthropogenic soils) were compared with those from adjacent non-anthropogenic soils (control soils) using elemental and thermogravimetric analyses, and a variety of solid-state nuclear magnetic resonance techniques. The thermogravimetric index, which indicates the molecular thermal resistance, was greater for the anthropogenic soils than for the control soils suggesting polycyclic aromatic components in the former. The cultivated anthropogenic soils were more enriched in C and depleted in H than the anthropogenic soils under forest, as the result of the selective degradation of aliphatic structures and the possible enrichment of H-deficient condensed aromatic structures. The combination of variable amplitude cross-polarization (VACP) and chemical shift anisotropy with total suppression of spinning sidebands experiments with composite pi pulses could be used to quantify the aromaticity of the HAs from the anthropogenic soils. From principal component analysis, using the VACP spectra, it was possible to separate the different constituents of the HAs, such as the carboxylated aromatic structures, from the anthropogenic soils and plant derived compounds. The data show that the HAs from anthropogenic soils have high contents of aryl and ionisable oxygenated functional groups, and the major functionalities from adjacent control soils are oxygenated functional groups from labile structures (carbohydrates, peptides, and with evidence for lignin structures). The anthropogenic soils HAs can be considered to be more recalcitrant, and with more stable reactive functional groups which may, in part, explain their more sustainable fertility due to the organic matter contribution to the soil cation exchange capacity. MenosThe compositions of humic acids (HAs) isolated from cultivated and forested "Terra Preta de Índio" or Amazonian Dark Earth soils (anthropogenic soils) were compared with those from adjacent non-anthropogenic soils (control soils) using elemental and thermogravimetric analyses, and a variety of solid-state nuclear magnetic resonance techniques. The thermogravimetric index, which indicates the molecular thermal resistance, was greater for the anthropogenic soils than for the control soils suggesting polycyclic aromatic components in the former. The cultivated anthropogenic soils were more enriched in C and depleted in H than the anthropogenic soils under forest, as the result of the selective degradation of aliphatic structures and the possible enrichment of H-deficient condensed aromatic structures. The combination of variable amplitude cross-polarization (VACP) and chemical shift anisotropy with total suppression of spinning sidebands experiments with composite pi pulses could be used to quantify the aromaticity of the HAs from the anthropogenic soils. From principal component analysis, using the VACP spectra, it was possible to separate the different constituents of the HAs, such as the carboxylated aromatic structures, from the anthropogenic soils and plant derived compounds. The data show that the HAs from anthropogenic soils have high contents of aryl and ionisable oxygenated functional groups, and the major functionalities from adjacent control soils are oxygenated func... Mostrar Tudo |
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Palavras-Chave: |
Ácido húmico; Composição; Terra Preta de Índio. |
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Thesagro: |
Solo; Solo Ácido; Solo Florestal. |
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Thesaurus NAL: |
Amazonia; Anthropogenic soil types; Humic acids; 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/177112/1/Separata-00453.pdf
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Marc: |
LEADER 02743naa a2200313 a 4500
001 1158055
005 2021-09-16
008 2007 bl uuuu u00u1 u #d
100 1 $aNOVOTNY, E. H.
245 $aStudies of the compositions of humic acids from Amazonian Dark Earth soils.$h[electronic resource]
260 $c2007
520 $aThe compositions of humic acids (HAs) isolated from cultivated and forested "Terra Preta de Índio" or Amazonian Dark Earth soils (anthropogenic soils) were compared with those from adjacent non-anthropogenic soils (control soils) using elemental and thermogravimetric analyses, and a variety of solid-state nuclear magnetic resonance techniques. The thermogravimetric index, which indicates the molecular thermal resistance, was greater for the anthropogenic soils than for the control soils suggesting polycyclic aromatic components in the former. The cultivated anthropogenic soils were more enriched in C and depleted in H than the anthropogenic soils under forest, as the result of the selective degradation of aliphatic structures and the possible enrichment of H-deficient condensed aromatic structures. The combination of variable amplitude cross-polarization (VACP) and chemical shift anisotropy with total suppression of spinning sidebands experiments with composite pi pulses could be used to quantify the aromaticity of the HAs from the anthropogenic soils. From principal component analysis, using the VACP spectra, it was possible to separate the different constituents of the HAs, such as the carboxylated aromatic structures, from the anthropogenic soils and plant derived compounds. The data show that the HAs from anthropogenic soils have high contents of aryl and ionisable oxygenated functional groups, and the major functionalities from adjacent control soils are oxygenated functional groups from labile structures (carbohydrates, peptides, and with evidence for lignin structures). The anthropogenic soils HAs can be considered to be more recalcitrant, and with more stable reactive functional groups which may, in part, explain their more sustainable fertility due to the organic matter contribution to the soil cation exchange capacity.
650 $aAmazonia
650 $aAnthropogenic soil types
650 $aHumic acids
650 $aSoil
650 $aSolo
650 $aSolo Ácido
650 $aSolo Florestal
653 $aÁcido húmico
653 $aComposição
653 $aTerra Preta de Índio
700 1 $aAZEVEDO, E. R. de
700 1 $aBONAGAMBA, T. J.
700 1 $aCUNHA, T. J. F.
700 1 $aMADARI, B. E.
700 1 $aBENITES, V. de M.
700 1 $aHAYES, M. H. B.
773 $tEnvironmental Science & Technology$gv. 41, n. 2, p. 400-405, jan. 2007.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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