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Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
01/03/2005 |
Data da última atualização: |
25/04/2008 |
Autoria: |
MATTOSO, L. H. C.; ZUCOLOTTO, V.; PATERNO, L. G.; VAN GRIETHUIJSEN, R.; FERREIRA, M.; CAMPANA, S. P.; OLIVEIRA JÚNIOR, O. N. |
Título: |
Self-assembly films of polyacids and doped poly(o-alkoxyanilines). |
Ano de publicação: |
1995 |
Fonte/Imprenta: |
Synthetic Metals, Lausanne, v. 71, p. 2037-2038, 1995. |
Idioma: |
Inglês |
Conteúdo: |
The self-assembly (SA) technique has been employed to fabricate ultra-thin fIlms of poly(o-alkoxyanilines) (POAAs) alternated with polyacids. Films were produced from alternated layers of doped poly(o-methoxyaniline) (POMA) and poly(styrene sulfonic acid) (PSS), doped POMA and poly(vinyl sulfonic acid) (PVS), and doped poly(o-ethoxyaniline) (POEA) and carboxymethylcellulose (CMC). The build-up of the multilayer structure was monitored by UV-Vis spectroscopy which showed that the absorbance increases linearly with the number of deposited bi-layers for the three systems. In these SA fllms the polyacid may act as a dopant for the POAA promoting Donnan phenomenon effects. The fllms could be doped and dedoped in a reversible fashion by being immersed fito solutions of different pHs. |
Palavras-Chave: |
Filme ultra-fino; SA; Técnica de Auto-montagem. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01428naa a2200229 a 4500 001 1028829 005 2008-04-25 008 1995 bl --- 0-- u #d 100 1 $aMATTOSO, L. H. C. 245 $aSelf-assembly films of polyacids and doped poly(o-alkoxyanilines). 260 $c1995 520 $aThe self-assembly (SA) technique has been employed to fabricate ultra-thin fIlms of poly(o-alkoxyanilines) (POAAs) alternated with polyacids. Films were produced from alternated layers of doped poly(o-methoxyaniline) (POMA) and poly(styrene sulfonic acid) (PSS), doped POMA and poly(vinyl sulfonic acid) (PVS), and doped poly(o-ethoxyaniline) (POEA) and carboxymethylcellulose (CMC). The build-up of the multilayer structure was monitored by UV-Vis spectroscopy which showed that the absorbance increases linearly with the number of deposited bi-layers for the three systems. In these SA fllms the polyacid may act as a dopant for the POAA promoting Donnan phenomenon effects. The fllms could be doped and dedoped in a reversible fashion by being immersed fito solutions of different pHs. 653 $aFilme ultra-fino 653 $aSA 653 $aTécnica de Auto-montagem 700 1 $aZUCOLOTTO, V. 700 1 $aPATERNO, L. G. 700 1 $aVAN GRIETHUIJSEN, R. 700 1 $aFERREIRA, M. 700 1 $aCAMPANA, S. P. 700 1 $aOLIVEIRA JÚNIOR, O. N. 773 $tSynthetic Metals, Lausanne$gv. 71, p. 2037-2038, 1995.
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Embrapa Instrumentação (CNPDIA) |
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Registro Completo
Biblioteca(s): |
Embrapa Pantanal. |
Data corrente: |
30/11/2000 |
Data da última atualização: |
31/03/2017 |
Autoria: |
McMANUS, C.; ABREU, U. G. P. de; LARA, M. A. C.; SERENO, J. R. B. |
Afiliação: |
FAV. Fundacao Universidade de Brasilia (Brasilia, DF); Embrapa Pantanal (Corumba, MS); Instituto de Zootecnia (Nova Odessa, SP). |
Título: |
Genetic parameters for pantaneiro cattle in Brazil. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
In: GLOBAL CONFERENCE ON CONSERVATION OF DOMESTIC ANIMAL GENETIC RESOURCES, 5., 2000, Brasilia. Proceedings... Brasilia: Embrapa Genetic Resources and Biotechnology, 2000. CD-ROM. (Embrapa Genetic Resources and Biotechnology. Document, 49). |
Páginas: |
(P-05). |
Idioma: |
Inglês |
Conteúdo: |
The Pantaneiro breed was the basis for extensive cattle production in the Pantanal region of Brazil for over 300 years. This breed was a result of the crossing of breeds from the Iberian peninsula, both Spanish and Portuguese, during the occupation of the Pantanal region. At the present time, there are few Pantaneiro cattle nuclei due to the random crossing with Nellore cattle from the beginning of the XX century. In spite of this, this ecotype is important material for genetic studies due to the natural selection in underwent for the specific ecosystem of the Pantanal. Comparative advantages can be observed for this breed when compared to other breeds or when used in cross breeding systems with "improved" breeds. As well as the historical importance in terms of occupation of the region, it is useful in environmental conservation since it doesn't require environmental modification for it's production and reproduction. This is especially important in the Pantanal region with the dynamics of flooding and dry periods. |
Palavras-Chave: |
Bovino pantaneiro; Brasil; Genetic; Pantaneiro cattle. |
Thesagro: |
Genética. |
Thesaurus NAL: |
Brazil; Pantanal. |
Categoria do assunto: |
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Marc: |
LEADER 01855naa a2200253 a 4500 001 1804356 005 2017-03-31 008 2000 bl --- 0-- u #d 100 1 $aMcMANUS, C. 245 $aGenetic parameters for pantaneiro cattle in Brazil. 260 $c2000 300 $a(P-05). 520 $aThe Pantaneiro breed was the basis for extensive cattle production in the Pantanal region of Brazil for over 300 years. This breed was a result of the crossing of breeds from the Iberian peninsula, both Spanish and Portuguese, during the occupation of the Pantanal region. At the present time, there are few Pantaneiro cattle nuclei due to the random crossing with Nellore cattle from the beginning of the XX century. In spite of this, this ecotype is important material for genetic studies due to the natural selection in underwent for the specific ecosystem of the Pantanal. Comparative advantages can be observed for this breed when compared to other breeds or when used in cross breeding systems with "improved" breeds. As well as the historical importance in terms of occupation of the region, it is useful in environmental conservation since it doesn't require environmental modification for it's production and reproduction. This is especially important in the Pantanal region with the dynamics of flooding and dry periods. 650 $aBrazil 650 $aPantanal 650 $aGenética 653 $aBovino pantaneiro 653 $aBrasil 653 $aGenetic 653 $aPantaneiro cattle 700 1 $aABREU, U. G. P. de 700 1 $aLARA, M. A. C. 700 1 $aSERENO, J. R. B. 773 $tIn: GLOBAL CONFERENCE ON CONSERVATION OF DOMESTIC ANIMAL GENETIC RESOURCES, 5., 2000, Brasilia. Proceedings... Brasilia: Embrapa Genetic Resources and Biotechnology, 2000. CD-ROM. (Embrapa Genetic Resources and Biotechnology. Document, 49).
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