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Registro Completo |
Biblioteca(s): |
Embrapa Unidades Centrais. |
Data corrente: |
13/05/1993 |
Data da última atualização: |
28/06/2011 |
Autoria: |
AVILA, A. F. D.; BORGES-ANDRADE, J. E.; IRIAS, L. J. M.; QUIRINO, T. R. |
Afiliação: |
EMBRAPA-DDM. |
Título: |
Avaliação do retorno dos investimentos na formação do capital humano da EMBRAPA: versão preliminar. |
Ano de publicação: |
1982 |
Fonte/Imprenta: |
Brasília: EMBRAPA-DDM: EMBRAPA-DRH, 1982. |
Páginas: |
63 p. |
Idioma: |
Português |
Palavras-Chave: |
Formacao; Human resource; Investiment; Retorno; Return. |
Thesagro: |
Investimento; Recurso Humano. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00647nam a2200229 a 4500 001 1086534 005 2011-06-28 008 1982 bl uuuu u0uu1 u #d 100 1 $aAVILA, A. F. D. 245 $aAvaliação do retorno dos investimentos na formação do capital humano da EMBRAPA$bversão preliminar. 260 $aBrasília: EMBRAPA-DDM: EMBRAPA-DRH$c1982 300 $a63 p. 650 $aInvestimento 650 $aRecurso Humano 653 $aFormacao 653 $aHuman resource 653 $aInvestiment 653 $aRetorno 653 $aReturn 700 1 $aBORGES-ANDRADE, J. E. 700 1 $aIRIAS, L. J. M. 700 1 $aQUIRINO, T. R.
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Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
25/05/2009 |
Data da última atualização: |
24/02/2010 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
OLIVEIRA-FILHO, E. C.; GRISOLIA, C. K.; PAUMGARTTEN, F. J. R. |
Afiliação: |
Eduardo Cyrino Oliveira-Filho, CPAC; Cesar Koppe Grisolia, UnB; Francisco José Roma Paumgartten, Fiocruz. |
Título: |
Effects of endosulfan and ethanol on the reproduction of the snail Biomphalaria tenagophila: a multigeneration study. |
Ano de publicação: |
2009 |
Fonte/Imprenta: |
Chemosphere, v. 75, p. 398-404, 2009. |
Idioma: |
Inglês |
Conteúdo: |
Endosulfan (END) is an insecticide used in agriculture and as a wood preservative. Since END is practically insoluble in water, ethanol (ETOH) is often employed as a carrier solvent to spike in the test medium in aquatic toxicity assays. In this study were investigated the effects of END and ETOH on the reproduction of the freshwater snail Biomphalaria tenagophila exposed over three successive generations. END (0, 0.001, 0.01, 0.1 mg l -1) was dissolved in the medium water using ETOH (up to 19.8 mg L -1) as carrier solvent. ETOH (19.8, 198, 1980 mg L -1) alone was tested as well. Adult snails (Fo-generation) were exposed to END and ETOH for 8 weeks. The F1-generation continued to be exposed from embryo to reproductive maturity, while their descendants (F2) were exposed until day 10 after spawning. Effects on the fecundity (8-week production of eggs and egg-masses) of mature Fo and F1 snails were evaluated. Developmental toxicity was investigated in F1, and F2 embryos. END at the highest level tested (0.1 mg L -1) inhibited egg production by Fo and F1 snails. ETOH at levels >=198 mg L -1 also reduced fecundity of Fo and F1, an effect that was apparently aggravated by exposure over successive generations. END 0.1 mh L 1- increased mortality and malformations and decreased hatching among F1 embryos. ETOH drastically reduced the proportion of hatchings among F2 embryos. The study-derived NOECs (no-observed-effect-concentrations) for END was 0.01 mg L -1 (reduction in fecundity), and for ETOH were 19.8 mh L -1 for reduction in fecundity and <19.8 mg L -1 for developmental toxicity (hatching retardation). MenosEndosulfan (END) is an insecticide used in agriculture and as a wood preservative. Since END is practically insoluble in water, ethanol (ETOH) is often employed as a carrier solvent to spike in the test medium in aquatic toxicity assays. In this study were investigated the effects of END and ETOH on the reproduction of the freshwater snail Biomphalaria tenagophila exposed over three successive generations. END (0, 0.001, 0.01, 0.1 mg l -1) was dissolved in the medium water using ETOH (up to 19.8 mg L -1) as carrier solvent. ETOH (19.8, 198, 1980 mg L -1) alone was tested as well. Adult snails (Fo-generation) were exposed to END and ETOH for 8 weeks. The F1-generation continued to be exposed from embryo to reproductive maturity, while their descendants (F2) were exposed until day 10 after spawning. Effects on the fecundity (8-week production of eggs and egg-masses) of mature Fo and F1 snails were evaluated. Developmental toxicity was investigated in F1, and F2 embryos. END at the highest level tested (0.1 mg L -1) inhibited egg production by Fo and F1 snails. ETOH at levels >=198 mg L -1 also reduced fecundity of Fo and F1, an effect that was apparently aggravated by exposure over successive generations. END 0.1 mh L 1- increased mortality and malformations and decreased hatching among F1 embryos. ETOH drastically reduced the proportion of hatchings among F2 embryos. The study-derived NOECs (no-observed-effect-concentrations) for END was 0.01 mg L -1 (reduction in fecundity),... Mostrar Tudo |
Palavras-Chave: |
Ecotoxicologia. |
Thesagro: |
Inseticida. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02144naa a2200169 a 4500 001 1558319 005 2010-02-24 008 2009 bl --- 0-- u #d 100 1 $aOLIVEIRA-FILHO, E. C. 245 $aEffects of endosulfan and ethanol on the reproduction of the snail Biomphalaria tenagophila$ba multigeneration study. 260 $c2009 520 $aEndosulfan (END) is an insecticide used in agriculture and as a wood preservative. Since END is practically insoluble in water, ethanol (ETOH) is often employed as a carrier solvent to spike in the test medium in aquatic toxicity assays. In this study were investigated the effects of END and ETOH on the reproduction of the freshwater snail Biomphalaria tenagophila exposed over three successive generations. END (0, 0.001, 0.01, 0.1 mg l -1) was dissolved in the medium water using ETOH (up to 19.8 mg L -1) as carrier solvent. ETOH (19.8, 198, 1980 mg L -1) alone was tested as well. Adult snails (Fo-generation) were exposed to END and ETOH for 8 weeks. The F1-generation continued to be exposed from embryo to reproductive maturity, while their descendants (F2) were exposed until day 10 after spawning. Effects on the fecundity (8-week production of eggs and egg-masses) of mature Fo and F1 snails were evaluated. Developmental toxicity was investigated in F1, and F2 embryos. END at the highest level tested (0.1 mg L -1) inhibited egg production by Fo and F1 snails. ETOH at levels >=198 mg L -1 also reduced fecundity of Fo and F1, an effect that was apparently aggravated by exposure over successive generations. END 0.1 mh L 1- increased mortality and malformations and decreased hatching among F1 embryos. ETOH drastically reduced the proportion of hatchings among F2 embryos. The study-derived NOECs (no-observed-effect-concentrations) for END was 0.01 mg L -1 (reduction in fecundity), and for ETOH were 19.8 mh L -1 for reduction in fecundity and <19.8 mg L -1 for developmental toxicity (hatching retardation). 650 $aInseticida 653 $aEcotoxicologia 700 1 $aGRISOLIA, C. K. 700 1 $aPAUMGARTTEN, F. J. R. 773 $tChemosphere$gv. 75, p. 398-404, 2009.
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