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| Registros recuperados : 14 | |
| 3. |  | MAUAD, M.; CRUSCIOL, C. A. C.; NASCENTE, A. S.; GRASSI FILHO, H.; CORRÊA, J. C. Acúmulo de silício na parte aérea de cultivares de arroz de terras altas afetado pela aplicação de silicato e carbonato no solo. Semina: Ciências Agrárias, Londrina, v. 34, n. 5, p. 2049-2060, set./out. 2013.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 5. | | MAUAD, M.; CRUSCIOL, C. A. C.; NASCENTE, A. S.; GRASSI FILHO, H.; LIMA, G. P. P. Effects of silicon and drought stress on biochemical characteristics of leaves of upland rice cultivars. Revista Ciência Agronômica, Fortaleza, v. 47, n. 3, p. 532-539, jul./set. 2016.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 6. | | CORRÊA, J. C.; BÜLL, L. T.; CRUSCIOL, C. A. C.; MARCELINO, R.; MAUAD, M. Correção da acidez e mobilidade de íons em Latossolo com aplicação superficial de escória, lama cal, lodos de esgoto e calcário Pesquisa Agropecuária Brasileira, Brasília, DF, v. 42, n. 9, p. 1307-1317, set. 2007 Titulo em inglês: Liming and ion mobility in an Oxisol under surface application of flue dust, aqueous lime, sewage sludge and limestone.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 7. | | CRUSCIOL, C. A. C.; NASCENTE, A. S.; MAUAD, M.; SILVA, A. C. de L. Desenvolvimento radicular e aéreo, nutrição e eficiência de absorção de macronutrientes e zinco por cultivares de arroz de terras altas afetadas pela adubação fosfatada. Semina: Ciências Agrárias, Londrina, v. 34, n. 5, p. 2061-2076, set./out. 2013.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 8. | | CARVALHO-PUPATTO, J. G.; BÜLL, L. T.; CRUSCIOL, C. A. C.; MAUAD, M.; SILVA, R. H. da. Efeito de escória de alto forno no crescimento radicular e na produtividade de arroz. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 38, n. 11, p. 1323-1328, nov. 2003 Título em inglês: Effect of blast furnace slag on root growth and yield of rice.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 9. | | CARMEIS FILHO, A. C. de A.; CRUSCIOL, C. A. C.; NASCENTE, A. S.; MAUAD, M.; GARCIA, R. A. Influence of potassium levels on root growth and nutrient uptake of upland rice cultivars. Revista Caatinga, Mossoró, v. 30, n. 1, p. 32-44, jan./mar. 2017.| Biblioteca(s): Embrapa Agropecuária Oeste; Embrapa Arroz e Feijão. |
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| 11. | | MAUAD, M.; GARCIA, R. A.; VITORINO, A. C. T.; SILVA, R. M. M. F.; GARBIATE, M. V.; COELHO, L. C. F. Matéria seca e acúmulo de macronutrientes na parte aérea das plantas de Crambe. Ciência Rural, v. 43, n. 5, p. 771-778, maio 2013.| Biblioteca(s): Embrapa Agropecuária Oeste. |
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| 12. | | FREITAS, M. E.; SOUZA, L. C. F. de; SALTON, J. C.; SERRA, A. P.; MAUAD, M.; CORTEZ, J. W.; MARCHETTI, M. E. Crop rotation affects soybean performance in no-tillage system under optimal and dry cropping seasons. Australian Journal of Crop Science, v. 10, n. 3, p. 353-361, Mar. 2016.| Biblioteca(s): Embrapa Agropecuária Oeste; Embrapa Gado de Corte. |
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| 13. | | MAUAD, M.; GARCIA, R. A.; SILVA, R. M. M. F.; SILVA, T. A. F. da; SCHROEDER, I. M.; KNUDSEN, C. H.; QUARESMA, E. V. W. Produção de matéria seca e acúmulo de macronutrientes na parte aérea das plantas de niger. Revista Brasileira de Ciência do Solo, v. 39, n. 2, p. 533-540, mar./abr. 2015.| Biblioteca(s): Embrapa Agropecuária Oeste. |
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| 14. | | LIMA, N. D.; VERZIGNASSI, J. R.; MAUAD, M.; FERNANDES, C. D.; SILVA, M. A. da; JESUS, L.; CORADO, H. S.; OLIVEIRA, M. A. S.; VICENTINI, R. P.; LIBÓRIO, C. B.; BEZERRA, F. C.; SILVA, F. A. S. Doses de boro e uniformização de plantas na produção de sementes de Brachiaria brizantha. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 14., 2018, Campo Grande - MS. [Resumos dos trabalhos]. Brasília, DF, Embrapa, 2018 115 p. (Embrapa Gado de Corte. Documentos, 258).| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 14 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
10/01/2019 |
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Data da última atualização: |
10/01/2019 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
MEDEIROS, A. M. Z.; KHAN, L. U.; DELITE, F. S.; COSTA, C. A.; OSPINA, C. A.; ALVES, O. L.; CASTRO, V. L. S. S. de; MARTINEZ, D. S. T. |
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Afiliação: |
Aline M.Z. MEDEIROS, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil; (2) Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP); Latif U. Khan, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM); Fabricio S. Delite, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM); Carlos A. Costa, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM); Carlos A. Ospina, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM); Oswaldo L. Alves, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM); Laboratoy of Solid State Chemistry (LQES) and NanoBioss Laboratory/UNICAMP; VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA; Diego S. T. Martinez, Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM): Center for Nuclear Energy in Agriculture (CENA), University of São Paulo (USP). |
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Título: |
Nanoecotoxicity of GO@AgNPs nanohybrid on zebrafish embryos: influence of natural organic matter and chorion membrane removal. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON HEALTH AND SAFETY ISSUES RELATED TO NANOMATERIALS FOR A SOCIALLY RESPONSIBLE APPROACH - NANOSAFE, 6., 2018, Grenoble. Book of Abstracts... Grenoble: 2018. Ref. A91883DM. |
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Páginas: |
p. 116. |
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Idioma: |
Português |
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Conteúdo: |
Single-layer graphene oxide decorated with silver nanoparticles (GO@AgNPs) nanohybrid is an emerging material to applications in nanotechnology such as catalysis, biosensors, composites, and antimicrobial materials. However, it is necessary to assess the potential risks of this nanohybrid material to environmental health. In aquatic environment, the nanomaterials can interact with natural organic matter (NOM), modifying their colloidal stability and consequently, change their effects on organisms. Here, we evaluated the nanoecotoxicity of GO@AgNPs on Zebrafish (Danio rerio) embryos in presence and absence of NOM. The GO@AgNPs nanohybrid material was synthetized by reducing AgNO3 with Na3C6H5O7 (sodium citrate) in the presence of GO. The nanohybrid was characterized by TEM, AFM, TGA, and XPS techniques. The colloidal stability of nanohybrid in zebrafish medium was monitored by UV-vis spectroscopy. The 24 hours post-fertilization (hpf) embryos were exposed during 96 hours to 0.5, 1.0, 2.5, 5.0 mg.L-1 GO@AgNPs, in presence or absence of NOM (Suwannee River NOM, 20 mg.L-1), with and without chorion barrier membrane. The positive and negative control groups? exposure were also performed. The fish embryo toxicity (FET) test showed the increase of deleterious effects on embryos with increase in concentration of nanohybrid material. This toxic effect was more severe in the embryos exposed without chorion. Its removal usually started the exposition of embryos to toxic materials in early phase. However, the presence of NOM mitigates the deleterious effects, revealing the antidotal proprieties of NOM for GO@AgNPs (Figure 1). These findings showed the critical influence of chorion membrane and NOM in the modulation of the adverse effects of GO@AgNP nanohybrid material on zebrafish model. MenosSingle-layer graphene oxide decorated with silver nanoparticles (GO@AgNPs) nanohybrid is an emerging material to applications in nanotechnology such as catalysis, biosensors, composites, and antimicrobial materials. However, it is necessary to assess the potential risks of this nanohybrid material to environmental health. In aquatic environment, the nanomaterials can interact with natural organic matter (NOM), modifying their colloidal stability and consequently, change their effects on organisms. Here, we evaluated the nanoecotoxicity of GO@AgNPs on Zebrafish (Danio rerio) embryos in presence and absence of NOM. The GO@AgNPs nanohybrid material was synthetized by reducing AgNO3 with Na3C6H5O7 (sodium citrate) in the presence of GO. The nanohybrid was characterized by TEM, AFM, TGA, and XPS techniques. The colloidal stability of nanohybrid in zebrafish medium was monitored by UV-vis spectroscopy. The 24 hours post-fertilization (hpf) embryos were exposed during 96 hours to 0.5, 1.0, 2.5, 5.0 mg.L-1 GO@AgNPs, in presence or absence of NOM (Suwannee River NOM, 20 mg.L-1), with and without chorion barrier membrane. The positive and negative control groups? exposure were also performed. The fish embryo toxicity (FET) test showed the increase of deleterious effects on embryos with increase in concentration of nanohybrid material. This toxic effect was more severe in the embryos exposed without chorion. Its removal usually started the exposition of embryos to toxic materials in ea... Mostrar Tudo |
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Palavras-Chave: |
Nanoecotoxicity; Zebrafish embryo. |
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Thesaurus NAL: |
Chorion; Organic matter. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/190151/1/RA-CastroVLSS-Nanosafe2018-p116.pdf
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Marc: |
LEADER 02734nam a2200253 a 4500
001 2103503
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008 2018 bl uuuu u00u1 u #d
100 1 $aMEDEIROS, A. M. Z.
245 $aNanoecotoxicity of GO@AgNPs nanohybrid on zebrafish embryos$binfluence of natural organic matter and chorion membrane removal.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE ON HEALTH AND SAFETY ISSUES RELATED TO NANOMATERIALS FOR A SOCIALLY RESPONSIBLE APPROACH - NANOSAFE, 6., 2018, Grenoble. Book of Abstracts... Grenoble: 2018. Ref. A91883DM.$c2018
300 $ap. 116.
520 $aSingle-layer graphene oxide decorated with silver nanoparticles (GO@AgNPs) nanohybrid is an emerging material to applications in nanotechnology such as catalysis, biosensors, composites, and antimicrobial materials. However, it is necessary to assess the potential risks of this nanohybrid material to environmental health. In aquatic environment, the nanomaterials can interact with natural organic matter (NOM), modifying their colloidal stability and consequently, change their effects on organisms. Here, we evaluated the nanoecotoxicity of GO@AgNPs on Zebrafish (Danio rerio) embryos in presence and absence of NOM. The GO@AgNPs nanohybrid material was synthetized by reducing AgNO3 with Na3C6H5O7 (sodium citrate) in the presence of GO. The nanohybrid was characterized by TEM, AFM, TGA, and XPS techniques. The colloidal stability of nanohybrid in zebrafish medium was monitored by UV-vis spectroscopy. The 24 hours post-fertilization (hpf) embryos were exposed during 96 hours to 0.5, 1.0, 2.5, 5.0 mg.L-1 GO@AgNPs, in presence or absence of NOM (Suwannee River NOM, 20 mg.L-1), with and without chorion barrier membrane. The positive and negative control groups? exposure were also performed. The fish embryo toxicity (FET) test showed the increase of deleterious effects on embryos with increase in concentration of nanohybrid material. This toxic effect was more severe in the embryos exposed without chorion. Its removal usually started the exposition of embryos to toxic materials in early phase. However, the presence of NOM mitigates the deleterious effects, revealing the antidotal proprieties of NOM for GO@AgNPs (Figure 1). These findings showed the critical influence of chorion membrane and NOM in the modulation of the adverse effects of GO@AgNP nanohybrid material on zebrafish model.
650 $aChorion
650 $aOrganic matter
653 $aNanoecotoxicity
653 $aZebrafish embryo
700 1 $aKHAN, L. U.
700 1 $aDELITE, F. S.
700 1 $aCOSTA, C. A.
700 1 $aOSPINA, C. A.
700 1 $aALVES, O. L.
700 1 $aCASTRO, V. L. S. S. de
700 1 $aMARTINEZ, D. S. T.
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