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Registro Completo |
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
22/12/1999 |
Data da última atualização: |
22/12/1999 |
Autoria: |
RIUL JUNIOR, A.; TELLES, G. D.; MATTOSO, L. H. C.; PEREIRA, M. R.; TICIANELLI, E.; FARIA, R. M.; OLIVEIRA JUNIOR, O. N. |
Afiliação: |
USP-IFSC; EMBRAPA-CNPDIA; USP-IQSC. |
Título: |
Fabricacao de filmes Langmuir-Blodgett (LB) de polianilina. |
Ano de publicação: |
1995 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE POLIMEROS, 3., nov. 1995, Rio de Janeiro, RJ. Anais... Rio de Janeiro: Associacao Brasileira de Polimeros, 1995. |
Páginas: |
p.1255-1258. |
Idioma: |
Português |
Conteúdo: |
Ultra-thin films of parent polyaniline were fabricated with the Langmuir-Blodgett technique using the concept of counter-ion-induced processibility. A functionalized acid was used, namely camphor sulfonic acid, in chloroform solutions. The films produced were characterized by ultraviolet-visible spectroscopy, electrical conductivity measurements and ellipsometry. When spread on acid subphases the films are readily obtained in the doped state. The presence of m-cresol promotes secondary doping effects as demonstrated by a lower energy excitonic transition due to polaron delocalization. |
Palavras-Chave: |
Espectroscopia; Fabricacao; Filmes; filmes ultrafinos; Langmuir-Blodgett; LB; Polianilina; Polyaniline. |
Thesaurus Nal: |
spectroscopy. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01492naa a2200313 a 4500 001 1026951 005 1999-12-22 008 1995 bl uuuu u00u1 u #d 100 1 $aRIUL JUNIOR, A. 245 $aFabricacao de filmes Langmuir-Blodgett (LB) de polianilina. 260 $c1995 300 $ap.1255-1258. 520 $aUltra-thin films of parent polyaniline were fabricated with the Langmuir-Blodgett technique using the concept of counter-ion-induced processibility. A functionalized acid was used, namely camphor sulfonic acid, in chloroform solutions. The films produced were characterized by ultraviolet-visible spectroscopy, electrical conductivity measurements and ellipsometry. When spread on acid subphases the films are readily obtained in the doped state. The presence of m-cresol promotes secondary doping effects as demonstrated by a lower energy excitonic transition due to polaron delocalization. 650 $aspectroscopy 653 $aEspectroscopia 653 $aFabricacao 653 $aFilmes 653 $afilmes ultrafinos 653 $aLangmuir-Blodgett 653 $aLB 653 $aPolianilina 653 $aPolyaniline 700 1 $aTELLES, G. D. 700 1 $aMATTOSO, L. H. C. 700 1 $aPEREIRA, M. R. 700 1 $aTICIANELLI, E. 700 1 $aFARIA, R. M. 700 1 $aOLIVEIRA JUNIOR, O. N. 773 $tIn: CONGRESSO BRASILEIRO DE POLIMEROS, 3., nov. 1995, Rio de Janeiro, RJ. Anais... Rio de Janeiro: Associacao Brasileira de Polimeros, 1995.
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Embrapa Instrumentação (CNPDIA) |
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Registro Completo
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
09/01/2017 |
Data da última atualização: |
17/02/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
VENTURINI, M. T.; SANTOS, L. R.; VILDOSO, C. I. A.; SANTOS, V. da S.; OLIVEIRA, E. J. de. |
Afiliação: |
M. T. Venturini, UFRB; L. R. SANTOS, UFRB; C. I. A. VILDOSO; VANDERLEI DA SILVA SANTOS, CNPMF; EDER JORGE DE OLIVEIRA, CNPMF. |
Título: |
Variation in cassava germplasm for tolerance to post-harvest physiological deterioration. |
Ano de publicação: |
2016 |
Fonte/Imprenta: |
Genetics and Molecular Research, V. 15,, n. 2, May, 2016. |
ISSN: |
1676-5680 |
DOI: |
gmr.15027818 |
Idioma: |
Inglês |
Conteúdo: |
Tolerant varieties can effectively control post-harvest physiological deterioration (PPD) of cassava, although knowledge on the genetic variability and inheritance of this trait is needed. The objective of this study was to estimate genetic parameters and identify sources of tolerance to PPD and their stability in cassava accessions. Roots from 418 cassava accessions, grown in four independent experiments, were evaluated for PPD tolerance 0, 2, 5, and 10 days post-harvest. Data were transformed into area under the PPD-progress curve (AUP-PPD) to quantify tolerance. Genetic parameters, stability (Si), adaptability (Ai), and the joint analysis of stability and adaptability (Zi) were obtained via residual maximum likelihood (REML) and best linear unbiased prediction (BLUP) methods. Variance in the genotype (G) x environment (E) interaction and genotypic variance were important for PPD tolerance. Individual broad-sense heritability (2gh= 0.38 ± 0.04) and average heritability in accessions (= 0.52) showed high genetic control of PPD tolerance. Genotypic correlation of AUP-PPD in different experiments was of medium magnitude ( =0.42), indicating significant G x E interaction. The predicted genotypic values o f G x E free of interaction (?ˆ + gˆi ) showed high variation. Of the 30 accessions with high Zi, 19 were common to ?ˆ + gˆi , Si, and Ai parameters. The genetic gain with selection of these 19 cassava accessions was -55.94, -466.86, -397.72, and -444.03% for i ?ˆ + gˆ , Si, Ai, and Zi, respectively, compared with the overall mean for each parameter. These results demonstrate the variability and potential of cassava germplasm to introduce PPD tolerance in commercial varieties. MenosTolerant varieties can effectively control post-harvest physiological deterioration (PPD) of cassava, although knowledge on the genetic variability and inheritance of this trait is needed. The objective of this study was to estimate genetic parameters and identify sources of tolerance to PPD and their stability in cassava accessions. Roots from 418 cassava accessions, grown in four independent experiments, were evaluated for PPD tolerance 0, 2, 5, and 10 days post-harvest. Data were transformed into area under the PPD-progress curve (AUP-PPD) to quantify tolerance. Genetic parameters, stability (Si), adaptability (Ai), and the joint analysis of stability and adaptability (Zi) were obtained via residual maximum likelihood (REML) and best linear unbiased prediction (BLUP) methods. Variance in the genotype (G) x environment (E) interaction and genotypic variance were important for PPD tolerance. Individual broad-sense heritability (2gh= 0.38 ± 0.04) and average heritability in accessions (= 0.52) showed high genetic control of PPD tolerance. Genotypic correlation of AUP-PPD in different experiments was of medium magnitude ( =0.42), indicating significant G x E interaction. The predicted genotypic values o f G x E free of interaction (?ˆ + gˆi ) showed high variation. Of the 30 accessions with high Zi, 19 were common to ?ˆ + gˆi , Si, and Ai parameters. The genetic gain with selection of these 19 cassava accessions was -55.94, -466.86, -397.72, and -444.03% for i ?ˆ + gˆ , Si, A... Mostrar Tudo |
Thesagro: |
Mandioca; Melhoramento vegetal. |
Thesaurus NAL: |
Cassava. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02384naa a2200229 a 4500 001 2060227 005 2017-02-17 008 2016 bl uuuu u00u1 u #d 022 $a1676-5680 024 7 $agmr.15027818$2DOI 100 1 $aVENTURINI, M. T. 245 $aVariation in cassava germplasm for tolerance to post-harvest physiological deterioration.$h[electronic resource] 260 $c2016 520 $aTolerant varieties can effectively control post-harvest physiological deterioration (PPD) of cassava, although knowledge on the genetic variability and inheritance of this trait is needed. The objective of this study was to estimate genetic parameters and identify sources of tolerance to PPD and their stability in cassava accessions. Roots from 418 cassava accessions, grown in four independent experiments, were evaluated for PPD tolerance 0, 2, 5, and 10 days post-harvest. Data were transformed into area under the PPD-progress curve (AUP-PPD) to quantify tolerance. Genetic parameters, stability (Si), adaptability (Ai), and the joint analysis of stability and adaptability (Zi) were obtained via residual maximum likelihood (REML) and best linear unbiased prediction (BLUP) methods. Variance in the genotype (G) x environment (E) interaction and genotypic variance were important for PPD tolerance. Individual broad-sense heritability (2gh= 0.38 ± 0.04) and average heritability in accessions (= 0.52) showed high genetic control of PPD tolerance. Genotypic correlation of AUP-PPD in different experiments was of medium magnitude ( =0.42), indicating significant G x E interaction. The predicted genotypic values o f G x E free of interaction (?ˆ + gˆi ) showed high variation. Of the 30 accessions with high Zi, 19 were common to ?ˆ + gˆi , Si, and Ai parameters. The genetic gain with selection of these 19 cassava accessions was -55.94, -466.86, -397.72, and -444.03% for i ?ˆ + gˆ , Si, Ai, and Zi, respectively, compared with the overall mean for each parameter. These results demonstrate the variability and potential of cassava germplasm to introduce PPD tolerance in commercial varieties. 650 $aCassava 650 $aMandioca 650 $aMelhoramento vegetal 700 1 $aSANTOS, L. R. 700 1 $aVILDOSO, C. I. A. 700 1 $aSANTOS, V. da S. 700 1 $aOLIVEIRA, E. J. de 773 $tGenetics and Molecular Research, V. 15,$gn. 2, May, 2016.
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