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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
31/07/2003 |
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Data da última atualização: |
31/07/2003 |
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Autoria: |
SANTANA, D. L. Q.; MENEZES, A. O.; BIZI, R. M. |
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Afiliação: |
Santana, pesquisadora da Embrapa Florestas. |
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Título: |
Ocorrência de Psyllaephagus sp. (HYMENOPTERA: ENCYRTIDAE) parasitando Ctenarytaina eucalypti (MASKELL) HOMOPTERA PSYLLIDAE) no Brasil. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 19., 2002, Manaus. A Entomologia no Século 21 e o Manejo da Biodiversidade: resumos. Manaus: Sociedade Entomológica do Brasil: INPA: Fundação Universidade do Amazonas, 2002. p. 149. |
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Idioma: |
Português |
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Notas: |
Resumo 026. |
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Palavras-Chave: |
Ctenarytaina eucalypti; Ocorrência; Psyllaeohagus sp. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00759naa a2200181 a 4500
001 1306643
005 2003-07-31
008 2002 bl uuuu u00u1 u #d
100 1 $aSANTANA, D. L. Q.
245 $aOcorrência de Psyllaephagus sp. (HYMENOPTERA$bENCYRTIDAE) parasitando Ctenarytaina eucalypti (MASKELL) HOMOPTERA PSYLLIDAE) no Brasil.
260 $c2002
500 $aResumo 026.
653 $aCtenarytaina eucalypti
653 $aOcorrência
653 $aPsyllaeohagus sp
700 1 $aMENEZES, A. O.
700 1 $aBIZI, R. M.
773 $tIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 19., 2002, Manaus. A Entomologia no Século 21 e o Manejo da Biodiversidade: resumos. Manaus: Sociedade Entomológica do Brasil: INPA: Fundação Universidade do Amazonas, 2002. p. 149.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
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Registro |
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URL |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
06/04/2005 |
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Data da última atualização: |
30/04/2008 |
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Autoria: |
ASSIS, O. B. G.; SILVA, E. R. |
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Título: |
The use of electrochemical techniques for ceramic filtration medium cleaning. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
In: INTERNATIONAL LATIN-AMERICAN CONFRENCE ON POWDER TECHNOLOGY, 4, PTECH 2003, nov. 2003. Guarujá, SP. Anais... Guarujá, 2003. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
: Preliminary results of the use of electroomosis technique for removal of organic contaminants in ceramic filtration porous structure are presented. The method employed provokes the migration of chemical residue and waste retained or adsorbed on the pore surfaces by applying a controlled tension within an electrochemical system. Porous ceramics have been the most common filtration medium employed within a broad range of applications. Conventional cleaning of a ceramic medium is not entirely effective for organic contaminants since these are not excluded by size, but retained through chemical affinity to the oxide surface. Under an electrical current the adsorbed molecules underwent shear stress due to the diffiIse moving layer. In ionic state the specimens are dragged and thus move towards the opposite charged electrode. Phenol was chosen as a standard contaminant and tests carried out using commercial ceramic filtration candles. Relative contaminant concentration was assessed by optical densities (UV-Vis spectroscopy). The results show that removal is proportional for up to 58% of the contaminant in diluted condition. |
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Palavras-Chave: |
Eletroosmose; Materiais porosos. |
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Thesagro: |
Filtro. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01694naa a2200169 a 4500
001 1028932
005 2008-04-30
008 2003 bl --- 0-- u #d
100 1 $aASSIS, O. B. G.
245 $aThe use of electrochemical techniques for ceramic filtration medium cleaning.
260 $c2003
520 $a: Preliminary results of the use of electroomosis technique for removal of organic contaminants in ceramic filtration porous structure are presented. The method employed provokes the migration of chemical residue and waste retained or adsorbed on the pore surfaces by applying a controlled tension within an electrochemical system. Porous ceramics have been the most common filtration medium employed within a broad range of applications. Conventional cleaning of a ceramic medium is not entirely effective for organic contaminants since these are not excluded by size, but retained through chemical affinity to the oxide surface. Under an electrical current the adsorbed molecules underwent shear stress due to the diffiIse moving layer. In ionic state the specimens are dragged and thus move towards the opposite charged electrode. Phenol was chosen as a standard contaminant and tests carried out using commercial ceramic filtration candles. Relative contaminant concentration was assessed by optical densities (UV-Vis spectroscopy). The results show that removal is proportional for up to 58% of the contaminant in diluted condition.
650 $aFiltro
653 $aEletroosmose
653 $aMateriais porosos
700 1 $aSILVA, E. R.
773 $tIn: INTERNATIONAL LATIN-AMERICAN CONFRENCE ON POWDER TECHNOLOGY, 4, PTECH 2003, nov. 2003. Guarujá, SP. Anais... Guarujá, 2003. 1 CD-ROM.
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Embrapa Instrumentação (CNPDIA) |
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