| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
06/10/2020 |
|
Data da última atualização: |
08/01/2021 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
FREIRE, J. M.; VERÍSSIMO, L. N.; PEREIRA, B. R.; ROUWS, J. R. C.; ARTHUR JUNIOR, J. C. |
|
Afiliação: |
JULIANA MULLER FREIRE, CNPAB; Letícia Nakamura Veríssimo, UFRRJ; Beatriz Rodrigues Pereira, UNIVERSIDADE DO PORTO; JANAINA RIBEIRO COSTA ROUWS, CNPAB; José Carlos Arthur Junior, UFRRJ. |
|
Título: |
Vegetative propagation of Hymenaea courbaril l. and Apuleia leiocarpa (Vogel) J. F. Macbr. by mini-cutting. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Revista Árvore, v. 44, e4405, 2020. |
|
DOI: |
http://dx.doi.org/10.1590/1806-908820200000005 |
|
Idioma: |
Inglês |
|
Notas: |
Titulo em Português: Propagação vegetativa de Hymenaea courbaril l. e Apuleia Leiocarpa (Vogel) J. F. Macbr. por meio da miniestaquia. |
|
Conteúdo: |
The objective of this work was to evaluate the vegetative propagation of Hymenaea courbaril (jatobá) and Apuleia leiocarpa (garapa) using the mini-cutting technique with the use of indolebutyric acid (IBA) growth regulator in diff erent types of mini-cuttings. We concluded that the basal mini-cutting is a viable technique for vegetative propagation of garapa, presenting 40% of rooting, but the propagation by minicutting for jatobá was not successful under the conditions of this study. |
|
Thesaurus Nal: |
Auxins; Fabaceae; Rooting. |
|
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
|
Marc: |
LEADER 01309naa a2200229 a 4500
001 2125309
005 2021-01-08
008 2020 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/1806-908820200000005$2DOI
100 1 $aFREIRE, J. M.
245 $aVegetative propagation of Hymenaea courbaril l. and Apuleia leiocarpa (Vogel) J. F. Macbr. by mini-cutting.$h[electronic resource]
260 $c2020
500 $aTitulo em Português: Propagação vegetativa de Hymenaea courbaril l. e Apuleia Leiocarpa (Vogel) J. F. Macbr. por meio da miniestaquia.
520 $aThe objective of this work was to evaluate the vegetative propagation of Hymenaea courbaril (jatobá) and Apuleia leiocarpa (garapa) using the mini-cutting technique with the use of indolebutyric acid (IBA) growth regulator in diff erent types of mini-cuttings. We concluded that the basal mini-cutting is a viable technique for vegetative propagation of garapa, presenting 40% of rooting, but the propagation by minicutting for jatobá was not successful under the conditions of this study.
650 $aAuxins
650 $aFabaceae
650 $aRooting
700 1 $aVERÍSSIMO, L. N.
700 1 $aPEREIRA, B. R.
700 1 $aROUWS, J. R. C.
700 1 $aARTHUR JUNIOR, J. C.
773 $tRevista Árvore$gv. 44, e4405, 2020.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
11/08/2020 |
|
Data da última atualização: |
16/08/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
B - 4 |
|
Autoria: |
SILVA, D. W.; SCATOLINO, M. V.; PEREIRA, T. G. T.; VILELA, A. P.; EUGENIO, T. M. C.; MARTINS, M. A.; MENDES, R. F.; BUFALINO, L.; TONOLI, G. H. D.; MENDES, L. M. |
|
Afiliação: |
MARIA ALICE MARTINS, CNPDIA. |
|
Título: |
Influence of thermal treatment of eucalyptus fibers on the physical-mechanical properties of extruded fiber-cement composites. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Materials Today: Proceedings, v. 31, 2020. |
|
Páginas: |
S348-S352 |
|
ISSN: |
2214-7853 |
|
DOI: |
https://doi.org/10.1016/j.matpr.2020.04.764 |
|
Idioma: |
Inglês |
|
Conteúdo: |
This study proposes to evaluate the effect of the heat treatment in commercial eucalyptus fibers (produced by thermo-mechanical process) on the physical-mechanical properties of extruded fiber-cements composites. The fibers were treated with different temperatures of heat treatment (140, 170, 200 and 230 °C) for 60 min in a “Macro-ATG” oven. The chemical and morphological characteristics of the natural fibers were evaluated before and after the thermal treatment. The cementitious paste was composed by 67.9% cement, 29.1% limestone and 3% eucalyptus fibers. Hydroxypropylmethylcellulose (HPMC) and polyether carboxylic acid (ADVA 175) were added to the cement paste both in 1% (based on the cement mass) to facilitate the extrusion process. The thermal treatments at 200 and 230 °C were efficient in reducing the extractives content. On the other hand, a decrease in length, diameter and lumen size of the fibers has occurred. The decrease in extractives content did not influence the properties of water absorption, modulus of rupture (MOR) and modulus of elasticity (MOE). The increase in lignin content resulted in increase for apparent porosity and decrease of the toughness in reinforced fiber-cement produced with fibers treated at 200 and 230 °C. The application of the thermal treatment for the fibers did not show improvement in fiber-cement in the evaluated conditions. It is recommended to evaluate other properties of the fiber-cement reinforced with the mentioned treated fibers, such as natural and laboratorial weathering. MenosThis study proposes to evaluate the effect of the heat treatment in commercial eucalyptus fibers (produced by thermo-mechanical process) on the physical-mechanical properties of extruded fiber-cements composites. The fibers were treated with different temperatures of heat treatment (140, 170, 200 and 230 °C) for 60 min in a “Macro-ATG” oven. The chemical and morphological characteristics of the natural fibers were evaluated before and after the thermal treatment. The cementitious paste was composed by 67.9% cement, 29.1% limestone and 3% eucalyptus fibers. Hydroxypropylmethylcellulose (HPMC) and polyether carboxylic acid (ADVA 175) were added to the cement paste both in 1% (based on the cement mass) to facilitate the extrusion process. The thermal treatments at 200 and 230 °C were efficient in reducing the extractives content. On the other hand, a decrease in length, diameter and lumen size of the fibers has occurred. The decrease in extractives content did not influence the properties of water absorption, modulus of rupture (MOR) and modulus of elasticity (MOE). The increase in lignin content resulted in increase for apparent porosity and decrease of the toughness in reinforced fiber-cement produced with fibers treated at 200 and 230 °C. The application of the thermal treatment for the fibers did not show improvement in fiber-cement in the evaluated conditions. It is recommended to evaluate other properties of the fiber-cement reinforced with the mentioned treated fibers, s... Mostrar Tudo |
|
Palavras-Chave: |
Cementitious composites; Chemical characterization; Extruded process; Morphological characterization. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02534naa a2200313 a 4500
001 2124283
005 2022-08-16
008 2020 bl uuuu u00u1 u #d
022 $a2214-7853
024 7 $ahttps://doi.org/10.1016/j.matpr.2020.04.764$2DOI
100 1 $aSILVA, D. W.
245 $aInfluence of thermal treatment of eucalyptus fibers on the physical-mechanical properties of extruded fiber-cement composites.$h[electronic resource]
260 $c2020
300 $aS348-S352
520 $aThis study proposes to evaluate the effect of the heat treatment in commercial eucalyptus fibers (produced by thermo-mechanical process) on the physical-mechanical properties of extruded fiber-cements composites. The fibers were treated with different temperatures of heat treatment (140, 170, 200 and 230 °C) for 60 min in a “Macro-ATG” oven. The chemical and morphological characteristics of the natural fibers were evaluated before and after the thermal treatment. The cementitious paste was composed by 67.9% cement, 29.1% limestone and 3% eucalyptus fibers. Hydroxypropylmethylcellulose (HPMC) and polyether carboxylic acid (ADVA 175) were added to the cement paste both in 1% (based on the cement mass) to facilitate the extrusion process. The thermal treatments at 200 and 230 °C were efficient in reducing the extractives content. On the other hand, a decrease in length, diameter and lumen size of the fibers has occurred. The decrease in extractives content did not influence the properties of water absorption, modulus of rupture (MOR) and modulus of elasticity (MOE). The increase in lignin content resulted in increase for apparent porosity and decrease of the toughness in reinforced fiber-cement produced with fibers treated at 200 and 230 °C. The application of the thermal treatment for the fibers did not show improvement in fiber-cement in the evaluated conditions. It is recommended to evaluate other properties of the fiber-cement reinforced with the mentioned treated fibers, such as natural and laboratorial weathering.
653 $aCementitious composites
653 $aChemical characterization
653 $aExtruded process
653 $aMorphological characterization
700 1 $aSCATOLINO, M. V.
700 1 $aPEREIRA, T. G. T.
700 1 $aVILELA, A. P.
700 1 $aEUGENIO, T. M. C.
700 1 $aMARTINS, M. A.
700 1 $aMENDES, R. F.
700 1 $aBUFALINO, L.
700 1 $aTONOLI, G. H. D.
700 1 $aMENDES, L. M.
773 $tMaterials Today: Proceedings$gv. 31, 2020.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
