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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
20/11/2020 |
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Data da última atualização: |
20/11/2020 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
RANGEL, P. H. N.; ABREU, A. G. de; TORGA, P. P. |
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Afiliação: |
PAULO HIDEO NAKANO RANGEL, CNPAF; ALUANA GONCALVES DE ABREU, CNPAF; PAULA PEREIRA TORGA, CNPAF. |
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Título: |
Implementação do sistema de qualidade total no BAG Arroz e Feijão. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 6., 2020. Recursos genéticos e bioeconomia: inovação para um futuro sustentável: anais. Brasília, DF: Sociedade Brasileira de Recursos Genéticos, 2020. |
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ISBN: |
978-65-88187-01-2 |
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Idioma: |
Português |
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Conteúdo: |
A história do Banco Ativo de Germoplasma de Arroz e Feijão (BAG Arroz e Feijão) confunde-se com a história do Centro Nacional de Pesquisa de Arroz e Feijão, hoje a Embrapa Arroz e Feijão. O BAG Arroz e Feijão, foi criado em 1975, e neste ano completa 45 anos de existência. O BAG Arroz e Feijão possui atualmente um acervo de 45.074 acessos, sendo 29.354 acessos de arroz (Oryza spp.) sendo que, 20.790 estão registrados no Portal Alelo e 15.720 de feijão (Phaseolus spp.) formados por variedades tradicionais coletadas no Brasil, cultivares comerciais, amostras de populações de espécies silvestres e linhagens de programas de melhoramento do país e do exterior. No BAG Arroz e Feijão está armazenado o maior acervo de recursos genéticos de arroz e feijão do Brasil. A conservação e o uso sustentável desse patrimônio genético são fundamentais para a pesquisa e para o cultivo de arroz e de feijão, portanto, tornando-se essencial para a competitividade da agricultura brasileira a sua adequada conservação, particularmente dos acessos de interesse imediato dos programas de melhoramento |
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Thesagro: |
Arroz; Banco de Germoplasma; Feijão; Recurso Genético. |
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Thesaurus Nal: |
Beans; Genetic resources; Germplasm; Rice. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/218031/1/2020-CBRG.pdf
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Marc: |
LEADER 01934nam a2200241 a 4500
001 2126861
005 2020-11-20
008 2020 bl uuuu u00u1 u #d
020 $a978-65-88187-01-2
100 1 $aRANGEL, P. H. N.
245 $aImplementação do sistema de qualidade total no BAG Arroz e Feijão.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE RECURSOS GENÉTICOS, 6., 2020. Recursos genéticos e bioeconomia: inovação para um futuro sustentável: anais. Brasília, DF: Sociedade Brasileira de Recursos Genéticos$c2020
520 $aA história do Banco Ativo de Germoplasma de Arroz e Feijão (BAG Arroz e Feijão) confunde-se com a história do Centro Nacional de Pesquisa de Arroz e Feijão, hoje a Embrapa Arroz e Feijão. O BAG Arroz e Feijão, foi criado em 1975, e neste ano completa 45 anos de existência. O BAG Arroz e Feijão possui atualmente um acervo de 45.074 acessos, sendo 29.354 acessos de arroz (Oryza spp.) sendo que, 20.790 estão registrados no Portal Alelo e 15.720 de feijão (Phaseolus spp.) formados por variedades tradicionais coletadas no Brasil, cultivares comerciais, amostras de populações de espécies silvestres e linhagens de programas de melhoramento do país e do exterior. No BAG Arroz e Feijão está armazenado o maior acervo de recursos genéticos de arroz e feijão do Brasil. A conservação e o uso sustentável desse patrimônio genético são fundamentais para a pesquisa e para o cultivo de arroz e de feijão, portanto, tornando-se essencial para a competitividade da agricultura brasileira a sua adequada conservação, particularmente dos acessos de interesse imediato dos programas de melhoramento
650 $aBeans
650 $aGenetic resources
650 $aGermplasm
650 $aRice
650 $aArroz
650 $aBanco de Germoplasma
650 $aFeijão
650 $aRecurso Genético
700 1 $aABREU, A. G. de
700 1 $aTORGA, P. P.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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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: |
20/09/2021 |
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Data da última atualização: |
10/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
FONSECA, C. S.; SCATOLINO, M. V.; SILVA, L. E.; MARTINS, M. A.; GUIMARÃES JUNIOR, M.; TONOLI, G. H. D. |
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Afiliação: |
MARIA ALICE MARTINS, CNPDIA. |
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Título: |
Valorization of jute biomass: Performance of fiber?cement composites extruded with hybrid reinforcement (fibers and nanofbrils). |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Waste and Biomass Valorization, v. 12, 2021). |
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Páginas: |
5743?5761 |
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DOI: |
https://doi.org/10.1007/s12649-021-01394-1 |
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Idioma: |
Inglês |
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Conteúdo: |
In this study, the characteristics of jute fbers and cellulose nanofbrils (CNFs) and their impacts on mechanical strength were compared, particularly from the standpoint of their application as reinforcement in extruded fber–cement composites. Raw jute fbers were subjected to an alkaline treatment before being fbrillated into CNFs. The fber–cement composites were produced with jute fbers (0.5% and 2%) and CNFs (0.5% and 2%) via extrusion process. Both percentages of reinforcement were based on the cement mass. In addition, hybrid composites with a mixture of fbers and CNFs were produced. Hydroxypropyl methylcellulose and carboxylic polyether were used as additives to improve the mixture’s rheology. The composites were subjected to natural weathering for 5 months before being analyzed for their physical and mechanical properties. CNFs and jute fbers subjected to NaOH treatment presented a higher initial degradation temperature (Tonset). The apparent porosity decreased for all compositions studied, reaching a 75% reduction for the sample reinforced with 2% CNFs. Fiber–cement with a hybrid reinforcement of 1.5% CNFs+0.5% fbers exhibited the strongest mechanical performance. All compositions showed a decrease in the modulus of elasticity after natural weathering. In contrast, the modulus of rupture and the limit of proportionality showed an average gain of 1 MPa for fber–cement composites produced with hybrid reinforcements. The better mechanical performance of the hybrid formulations may be owing to the synergistic work of the fbers and CNFs, suggesting the potential of cellulose CNFs for use as reinforcement in cement-based composites. MenosIn this study, the characteristics of jute fbers and cellulose nanofbrils (CNFs) and their impacts on mechanical strength were compared, particularly from the standpoint of their application as reinforcement in extruded fber–cement composites. Raw jute fbers were subjected to an alkaline treatment before being fbrillated into CNFs. The fber–cement composites were produced with jute fbers (0.5% and 2%) and CNFs (0.5% and 2%) via extrusion process. Both percentages of reinforcement were based on the cement mass. In addition, hybrid composites with a mixture of fbers and CNFs were produced. Hydroxypropyl methylcellulose and carboxylic polyether were used as additives to improve the mixture’s rheology. The composites were subjected to natural weathering for 5 months before being analyzed for their physical and mechanical properties. CNFs and jute fbers subjected to NaOH treatment presented a higher initial degradation temperature (Tonset). The apparent porosity decreased for all compositions studied, reaching a 75% reduction for the sample reinforced with 2% CNFs. Fiber–cement with a hybrid reinforcement of 1.5% CNFs+0.5% fbers exhibited the strongest mechanical performance. All compositions showed a decrease in the modulus of elasticity after natural weathering. In contrast, the modulus of rupture and the limit of proportionality showed an average gain of 1 MPa for fber–cement composites produced with hybrid reinforcements. The better mechanical performance of the hybrid formul... Mostrar Tudo |
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Palavras-Chave: |
Cellulose fibers; CNF; Lignocellulose fiber; Mechanical fibrillation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02476naa a2200253 a 4500
001 2134590
005 2022-06-10
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s12649-021-01394-1$2DOI
100 1 $aFONSECA, C. S.
245 $aValorization of jute biomass$bPerformance of fiber?cement composites extruded with hybrid reinforcement (fibers and nanofbrils).$h[electronic resource]
260 $c2021
300 $a5743?5761
520 $aIn this study, the characteristics of jute fbers and cellulose nanofbrils (CNFs) and their impacts on mechanical strength were compared, particularly from the standpoint of their application as reinforcement in extruded fber–cement composites. Raw jute fbers were subjected to an alkaline treatment before being fbrillated into CNFs. The fber–cement composites were produced with jute fbers (0.5% and 2%) and CNFs (0.5% and 2%) via extrusion process. Both percentages of reinforcement were based on the cement mass. In addition, hybrid composites with a mixture of fbers and CNFs were produced. Hydroxypropyl methylcellulose and carboxylic polyether were used as additives to improve the mixture’s rheology. The composites were subjected to natural weathering for 5 months before being analyzed for their physical and mechanical properties. CNFs and jute fbers subjected to NaOH treatment presented a higher initial degradation temperature (Tonset). The apparent porosity decreased for all compositions studied, reaching a 75% reduction for the sample reinforced with 2% CNFs. Fiber–cement with a hybrid reinforcement of 1.5% CNFs+0.5% fbers exhibited the strongest mechanical performance. All compositions showed a decrease in the modulus of elasticity after natural weathering. In contrast, the modulus of rupture and the limit of proportionality showed an average gain of 1 MPa for fber–cement composites produced with hybrid reinforcements. The better mechanical performance of the hybrid formulations may be owing to the synergistic work of the fbers and CNFs, suggesting the potential of cellulose CNFs for use as reinforcement in cement-based composites.
653 $aCellulose fibers
653 $aCNF
653 $aLignocellulose fiber
653 $aMechanical fibrillation
700 1 $aSCATOLINO, M. V.
700 1 $aSILVA, L. E.
700 1 $aMARTINS, M. A.
700 1 $aGUIMARÃES JUNIOR, M.
700 1 $aTONOLI, G. H. D.
773 $tWaste and Biomass Valorization$gv. 12, 2021).
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Embrapa Instrumentação (CNPDIA) |
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