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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
06/06/2000 |
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Data da última atualização: |
31/03/2017 |
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Autoria: |
GODOY, J. M.; GUIMARAES, J. R. D.; PADOVANI, C. R.; PEREIRA, J. C. A.; VIEIRA, L. M.; CARVALHO, Z. L.; GALDINO, S. |
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Afiliação: |
CNEN.Instituto de Radioprotecao e Dosemetria (Rio de Janeiro, RJ). PUC.Departamento de Quimica (Rio de Janeiro, RJ). UFRJ.Instituto de Biofisica (Rio de Janeiro, RJ). EMBRAPA Pantanal (Corumba, MS). |
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Título: |
Mercury levels on sediment cores from a non gold mining area of the Brazilian Pantanal. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ENVIRONMENTAL GEOCHEMISTRY IN TROPICAL COUNTRIES, 3., 1999, Nova Friburgo. Book Abstracts. |
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Idioma: |
Inglês |
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Conteúdo: |
The mercury concentration was determined on two sediment cores taken from floodplain lakes from the Taquari River, Mato Grosso do Sul. The lakes studied during this work were located close to the city of Coxim, in the coordinates 18º 24' 10"S and 54º 58' 46"W (Lake 1) and 18º 21' 57"S and 54º 59' 38"W (Lake 2). The sediment cores were taken using a gravity corer and P^VC tubes. They were cut into 2 cm slices, and the central part of each slice was reserved for mercury determination. The Pb-210 technique was used for sediment dating and determination of mass sedimentation rates. Mercury was analyzed by cold vapor atomic absorption spectrometry. Both cores have shown a similar pattern with mercury concentrations between 20 and 80 ug.g-1 for Lake 1 and 13 and 60 ug.g-1 for Lake 2. The mercury concentrations are approximately constant until 1940 and lower than present values by a factor of two. |
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Palavras-Chave: |
Brasil; Gold mining; Mineracao de ouro; Sediment. |
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Thesagro: |
Mercúrio; Sedimento. |
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Thesaurus Nal: |
Brazil; mercury; Pantanal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01761naa a2200301 a 4500
001 1801095
005 2017-03-31
008 1999 bl --- 0-- u #d
100 1 $aGODOY, J. M.
245 $aMercury levels on sediment cores from a non gold mining area of the Brazilian Pantanal.
260 $c1999
520 $aThe mercury concentration was determined on two sediment cores taken from floodplain lakes from the Taquari River, Mato Grosso do Sul. The lakes studied during this work were located close to the city of Coxim, in the coordinates 18º 24' 10"S and 54º 58' 46"W (Lake 1) and 18º 21' 57"S and 54º 59' 38"W (Lake 2). The sediment cores were taken using a gravity corer and P^VC tubes. They were cut into 2 cm slices, and the central part of each slice was reserved for mercury determination. The Pb-210 technique was used for sediment dating and determination of mass sedimentation rates. Mercury was analyzed by cold vapor atomic absorption spectrometry. Both cores have shown a similar pattern with mercury concentrations between 20 and 80 ug.g-1 for Lake 1 and 13 and 60 ug.g-1 for Lake 2. The mercury concentrations are approximately constant until 1940 and lower than present values by a factor of two.
650 $aBrazil
650 $amercury
650 $aPantanal
650 $aMercúrio
650 $aSedimento
653 $aBrasil
653 $aGold mining
653 $aMineracao de ouro
653 $aSediment
700 1 $aGUIMARAES, J. R. D.
700 1 $aPADOVANI, C. R.
700 1 $aPEREIRA, J. C. A.
700 1 $aVIEIRA, L. M.
700 1 $aCARVALHO, Z. L.
700 1 $aGALDINO, S.
773 $tIn: INTERNATIONAL SYMPOSIUM ENVIRONMENTAL GEOCHEMISTRY IN TROPICAL COUNTRIES, 3., 1999, Nova Friburgo. Book Abstracts.
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Registro original: |
Embrapa Pantanal (CPAP) |
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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: |
30/12/2019 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
MORAES, I. DE C.; RUME, G. DE C.; SOUZA SOBRINHO, F. de; TECHIO, V. H. |
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Afiliação: |
ISABELLA DE CAMPOS MORAES; GABRIEL DE CAMPOS RUME; FAUSTO DE SOUZA SOBRINHO, CNPGL; VÂNIA HELENA TECHIO. |
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Título: |
Characterization of aneuploidy in interspecific hybrid between Urochloa ruziziensis (R. Germ. & Evrard) Crins and Urochloa decumbens (Stapf) R. D. Webster. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Molecular Biology Reports, v. 46, n. 2, p. 1931-1940, 2019. |
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DOI: |
https://doi.org/10.1007/s11033-019-04643-8 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of the study was to characterize the type of aneuploidy present in the hybrid Urochloa ruziziensis × Urochloa decumbens and to confirm the origin of the additional chromosomes through comparative analysis of the hybrid and parental karyotypes. C and CMA banding techniques were used for chromosome differentiation. The parental genotypes showed 36 chromosomes. The hybrid presented plants with 36 + 2 chromosomes and plants with 36 + 1 chromosomes. Urochloa ruziziensis (4x) presented four chromosomes with CMA and C bands co-located in the terminal position. In U. decumbens, four chromosomes presented terminal CMA bands, eight chromosomes were distinguished by C banding with pericentromeric and terminal bands, one chromosome with terminal band at both ends and one chromosome presented one C terminal band. For the hybrid, CMA bands were found on five chromosomes and C bands on seven chromosomes, all in terminal position. Aneuploidy was identified in pairs 3' and 4' in the hybrid plants with 36 + 2 chromosomes, characterizing it as double trisomy. The karyotype of hybrid plants with 36 + 1 chromosomes indicated elimination of the additional chromosome identified in pair 4' and maintenance of trisomy on pair 3'. The comparative analysis of karyotypes indicates that the additional chromosomes that characterize the trisomy were inherited from U. ruziziensis (artificial tetraploid). |
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Palavras-Chave: |
Karyotype; Trisomy. |
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Thesagro: |
Brachiaria. |
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Thesaurus NAL: |
Chromosome banding. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02142naa a2200217 a 4500
001 2117878
005 2024-02-06
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s11033-019-04643-8$2DOI
100 1 $aMORAES, I. DE C.
245 $aCharacterization of aneuploidy in interspecific hybrid between Urochloa ruziziensis (R. Germ. & Evrard) Crins and Urochloa decumbens (Stapf) R. D. Webster.$h[electronic resource]
260 $c2019
520 $aThe aim of the study was to characterize the type of aneuploidy present in the hybrid Urochloa ruziziensis × Urochloa decumbens and to confirm the origin of the additional chromosomes through comparative analysis of the hybrid and parental karyotypes. C and CMA banding techniques were used for chromosome differentiation. The parental genotypes showed 36 chromosomes. The hybrid presented plants with 36 + 2 chromosomes and plants with 36 + 1 chromosomes. Urochloa ruziziensis (4x) presented four chromosomes with CMA and C bands co-located in the terminal position. In U. decumbens, four chromosomes presented terminal CMA bands, eight chromosomes were distinguished by C banding with pericentromeric and terminal bands, one chromosome with terminal band at both ends and one chromosome presented one C terminal band. For the hybrid, CMA bands were found on five chromosomes and C bands on seven chromosomes, all in terminal position. Aneuploidy was identified in pairs 3' and 4' in the hybrid plants with 36 + 2 chromosomes, characterizing it as double trisomy. The karyotype of hybrid plants with 36 + 1 chromosomes indicated elimination of the additional chromosome identified in pair 4' and maintenance of trisomy on pair 3'. The comparative analysis of karyotypes indicates that the additional chromosomes that characterize the trisomy were inherited from U. ruziziensis (artificial tetraploid).
650 $aChromosome banding
650 $aBrachiaria
653 $aKaryotype
653 $aTrisomy
700 1 $aRUME, G. DE C.
700 1 $aSOUZA SOBRINHO, F. de
700 1 $aTECHIO, V. H.
773 $tMolecular Biology Reports$gv. 46, n. 2, p. 1931-1940, 2019.
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Embrapa Gado de Leite (CNPGL) |
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