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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Solos. |
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Data corrente: |
24/01/2006 |
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Data da última atualização: |
29/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BENITES, V. de M.; MENDONCA, E. de S.; SCHAEFER, C. E. G. R.; NOVOTNY, E. H.; REIS, E. L.; KER, J. C. |
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Afiliação: |
Embrapa Milho e Sorgo. |
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Título: |
Properties of black soil humic acids from high altitude rocky complexes in Brazil. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Geoderma, Amsterdam, v. 127, n. 1/2, p. 104-113, 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
Forty two samples of black soils were collected from superficial horizons of the High Altitude Rocky Complex (HARC) that is situated on top of the most prominent mountain ranges of eastern Brazil. Our objective was to characterize the humic acids extracted from these pedoenvironments and evaluate the effect of natural paleo-fires on thermogravimetric properties, elemental composition, visible and infrared absorption of humic acids (HA). The high thermostability, low H:C ratio, and abundance in carboxylic groups, suggest that the HARC black soil HA present larger biostability and reactivity. The molecular characteristics indicated that HARC black soil HAs have a great contribution of transformed charred vegetable residues on its origin. This persistence and reactivity of black soil HA explain the capacity of these soils to maintain their cation exchange capacity, since the soil clay fraction is composed predominantly by low activity minerals. |
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Palavras-Chave: |
Black carbon; FTIR. |
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Thesagro: |
Solo Tropical. |
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Thesaurus Nal: |
charcoal; humic acids; tropical soils. |
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Categoria do assunto: |
--
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01665naa a2200253 a 4500
001 1489148
005 2018-05-29
008 2005 bl uuuu u00u1 u #d
100 1 $aBENITES, V. de M.
245 $aProperties of black soil humic acids from high altitude rocky complexes in Brazil.$h[electronic resource]
260 $c2005
520 $aForty two samples of black soils were collected from superficial horizons of the High Altitude Rocky Complex (HARC) that is situated on top of the most prominent mountain ranges of eastern Brazil. Our objective was to characterize the humic acids extracted from these pedoenvironments and evaluate the effect of natural paleo-fires on thermogravimetric properties, elemental composition, visible and infrared absorption of humic acids (HA). The high thermostability, low H:C ratio, and abundance in carboxylic groups, suggest that the HARC black soil HA present larger biostability and reactivity. The molecular characteristics indicated that HARC black soil HAs have a great contribution of transformed charred vegetable residues on its origin. This persistence and reactivity of black soil HA explain the capacity of these soils to maintain their cation exchange capacity, since the soil clay fraction is composed predominantly by low activity minerals.
650 $acharcoal
650 $ahumic acids
650 $atropical soils
650 $aSolo Tropical
653 $aBlack carbon
653 $aFTIR
700 1 $aMENDONCA, E. de S.
700 1 $aSCHAEFER, C. E. G. R.
700 1 $aNOVOTNY, E. H.
700 1 $aREIS, E. L.
700 1 $aKER, J. C.
773 $tGeoderma, Amsterdam$gv. 127, n. 1/2, p. 104-113, 2005.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro |
Volume |
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Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
12/02/2015 |
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Data da última atualização: |
26/04/2024 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
BIEGELMEYER, P.; OLIVEIRA, M. M.; CARDOSO, L. L.; GOMES, C. C. G.; HIGA, R. H.; DIONELLO, N. J. L.; CAETANO, A. R.; STEIBEL, J. P.; CARDOSO, F. F. |
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Afiliação: |
PATRÍCIA BIEGELMEYER, UFPEL; MAURICIO MORGADO OLIVEIRA; LEANDRO LUNARDINI CARDOSO; CLAUDIA CRISTINA GULIAS GOMES, CPPSUL; ROBERTO HIROSHI HIGA, CNPTIA; NELSON JOSÉ LAURINO DIONELLO, UFPEL; ALEXANDRE RODRIGUES CAETANO, CENARGEN; JUAN P. STEIBEL, MICHIGAN STATE UNIVERSITY; FERNANDO FLORES CARDOSO, CPPSUL. |
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Título: |
Estimation of linkage disequilibrium, persistence of phase and effective population size of Brazilian Hereford and Braford breeds. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 10., 2014, Vancouver, British Columbia, Canada. Proceedings... Champaign: ASAS, 2014. |
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Páginas: |
Não paginado. |
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Idioma: |
Inglês |
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Conteúdo: |
A set of 41,241 SNP genotypes from 2,435 Hereford (HH) and Braford (BO) bovines were analyzed to estimate linkage disequilibrium (LD) levels, persistence of phase and effective population size of these populations. LD levels were estimated using the squared correlation of alleles at two loci (r2) at varying distances. Average r2 between adjacent SNP was 0.21 for HH and 0.16 for BO. Average inter-marker distance was 61 kb in both breeds. Useful LD values (r2>0.2) were observed at 0-60 kb bins in HH and 0-20 kb bins in BO. Breeds demonstrated moderate to strong persistence of phase at all distances (range=0.53-0.97). The greatest phase correlations (r>0.9) were found in 0-50 kb bins. LD estimates decreased rapidly with increasing distances between SNPs, however, useful LD was observed in genomic regions spanning up to ~50 kb. |
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Palavras-Chave: |
Desequilíbrio de ligação; Persistence of phase; Tamanho populacional. |
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Thesagro: |
Gado de corte. |
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Thesaurus NAL: |
Beef cattle; Linkage disequilibrium; Population size. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/114443/1/estimation-Biegelmeyer.pdf
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Marc: |
LEADER 01874nam a2200301 a 4500
001 2008655
005 2024-04-26
008 2014 bl uuuu u01u1 u #d
100 1 $aBIEGELMEYER, P.
245 $aEstimation of linkage disequilibrium, persistence of phase and effective population size of Brazilian Hereford and Braford breeds.$h[electronic resource]
260 $aIn: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 10., 2014, Vancouver, British Columbia, Canada. Proceedings... Champaign: ASAS$c2014
300 $aNão paginado.
520 $aA set of 41,241 SNP genotypes from 2,435 Hereford (HH) and Braford (BO) bovines were analyzed to estimate linkage disequilibrium (LD) levels, persistence of phase and effective population size of these populations. LD levels were estimated using the squared correlation of alleles at two loci (r2) at varying distances. Average r2 between adjacent SNP was 0.21 for HH and 0.16 for BO. Average inter-marker distance was 61 kb in both breeds. Useful LD values (r2>0.2) were observed at 0-60 kb bins in HH and 0-20 kb bins in BO. Breeds demonstrated moderate to strong persistence of phase at all distances (range=0.53-0.97). The greatest phase correlations (r>0.9) were found in 0-50 kb bins. LD estimates decreased rapidly with increasing distances between SNPs, however, useful LD was observed in genomic regions spanning up to ~50 kb.
650 $aBeef cattle
650 $aLinkage disequilibrium
650 $aPopulation size
650 $aGado de corte
653 $aDesequilíbrio de ligação
653 $aPersistence of phase
653 $aTamanho populacional
700 1 $aOLIVEIRA, M. M.
700 1 $aCARDOSO, L. L.
700 1 $aGOMES, C. C. G.
700 1 $aHIGA, R. H.
700 1 $aDIONELLO, N. J. L.
700 1 $aCAETANO, A. R.
700 1 $aSTEIBEL, J. P.
700 1 $aCARDOSO, F. F.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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