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Registro Completo |
Biblioteca(s): |
Embrapa Amapá. |
Data corrente: |
29/06/2005 |
Data da última atualização: |
10/06/2019 |
Autoria: |
MENINO, I. B.; MACÊDO, L. de S. (org.). |
Afiliação: |
EMEPA, João Pessoa, PB. e-mail: comasi@emepa.org.br. |
Título: |
Água e solo: riquezas da propriedade rural. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
João Pessoa: EMEPA, 2005. |
Páginas: |
40 p. |
Série: |
(EMEPA. Documentos, 46). |
Idioma: |
Português |
Conteúdo: |
Conservação das minas d´água e do solo na propriedade rural; Mina d´água também é ouro; Apelos feitos por quem verdadeiramente valorizou os recursos naturais; O ciclo natural da água: um recurso renovável, mas seu acesso vai se tornando cada vez mais difícil; O uso da água no Brasil e o cenário atual nas cidades e no campo; O que diz a lei para proteger a água e o solo; Cuidados necessários nas encostas para preservar a água e o solo: práticas para o agricultor ser tornar um produtor de água; Recomendações para evitar a contaminação das minas d´água; O caminho seguro para recuperar sua mina d´água. |
Palavras-Chave: |
Mina d´água; Preservação ambiental; Recursos naturais. |
Thesagro: |
Mata Ciliar. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01132nam a2200193 a 4500 001 1348657 005 2019-06-10 008 2005 bl uuuu u0uu1 u #d 100 1 $aMENINO, I. B. 245 $aÁgua e solo$briquezas da propriedade rural. 260 $aJoão Pessoa: EMEPA$c2005 300 $a40 p. 490 $a(EMEPA. Documentos, 46). 520 $aConservação das minas d´água e do solo na propriedade rural; Mina d´água também é ouro; Apelos feitos por quem verdadeiramente valorizou os recursos naturais; O ciclo natural da água: um recurso renovável, mas seu acesso vai se tornando cada vez mais difícil; O uso da água no Brasil e o cenário atual nas cidades e no campo; O que diz a lei para proteger a água e o solo; Cuidados necessários nas encostas para preservar a água e o solo: práticas para o agricultor ser tornar um produtor de água; Recomendações para evitar a contaminação das minas d´água; O caminho seguro para recuperar sua mina d´água. 650 $aMata Ciliar 653 $aMina d´água 653 $aPreservação ambiental 653 $aRecursos naturais 700 1 $aMACÊDO, L. de S.
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Embrapa Amapá (CPAF-AP) |
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Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
10/01/2019 |
Data da última atualização: |
10/01/2019 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
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. |
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). |
Título: |
Nanoecotoxicity of GO@AgNPs nanohybrid on zebrafish embryos: influence of natural organic matter and chorion membrane removal. |
Ano de publicação: |
2018 |
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. |
Páginas: |
p. 116. |
Idioma: |
Português |
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 |
Palavras-Chave: |
Nanoecotoxicity; Zebrafish embryo. |
Thesaurus NAL: |
Chorion; Organic matter. |
Categoria do assunto: |
W Química e Física |
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 005 2019-01-10 008 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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