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Registro Completo |
Biblioteca(s): |
Embrapa Florestas. |
Data corrente: |
20/12/2021 |
Data da última atualização: |
22/12/2021 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
GOTTARDI, F. M.; BELINI, U. L.; ZANONI, P. R. S.; MAGALHAES, W. L. E. |
Afiliação: |
FERNANDA MACEDO GOTTARDI, UTFPR; UGO LEANDRO BELINI, UTFPR; PATRICIA RAQUEL SILVA ZANONI, CNPF; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
Título: |
Fibras residuais de pupunha: estudo de aplicações ao design sustentável. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
In: SIMPÓSIO DE DESIGN SUSTENTÁVEL, 8., 2021. [Anais]... Curitiba: UFPR, 2021. p. 61-71. |
Idioma: |
Português |
Notas: |
Online. |
Conteúdo: |
Sustentabilidade apresenta-se como um termo importante no mundo contemporâneo, o que aumentou a busca e o desenvolvimento de materiais derivados de fibras naturais e residuais. Nesse contexto, agregando conceitos de ecodesign, design social e economia circular, utilizaram-se resíduos fibrosos do processamento do palmito pupunha para desenvolvimento de novos materiais, representados por papéis de diferentes qualidades. Foram realizados estudos, geração de alternativas e um brainstorming de possíveis aplicações para os materiais gerados, que resultaram no projeto de acessórios para o uso em restaurantes, tais como envelopes para talheres, bem como outros produtos que não foram englobados nesse artigo, como papéis bandeja e porta-copos. Com ensaios laboratoriais fora possível analisar aspectos físicos e testar a resistência dos itens perante forças externas, bem como avaliar em microscópio a aglutinação das fibras de pupunha. Dentre as características observadas destacaram-se a maleabilidade, a grande variabilidade de aplicações, a possibilidade de reprodução artesanal e a contribuição para a sustentabilidade ambiental, uma vez que se trata de materiais residuais aplicados ao Design de produto, podendo futuramente apresentar amplo uso em áreas como arquitetura e bioengenharia principalmente na parte de revestimentos. |
Palavras-Chave: |
Design social; Ecodesign; Novos materiais; Sustentabilidade. |
Thesagro: |
Fibra Vegetal; Palmito; Papel; Pupunha. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/229383/1/Patricia-Silva-SDS2021.pdf
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Marc: |
LEADER 02104nam a2200253 a 4500 001 2138080 005 2021-12-22 008 2021 bl uuuu u00u1 u #d 100 1 $aGOTTARDI, F. M. 245 $aFibras residuais de pupunha$bestudo de aplicações ao design sustentável.$h[electronic resource] 260 $aIn: SIMPÓSIO DE DESIGN SUSTENTÁVEL, 8., 2021. [Anais]... Curitiba: UFPR, 2021. p. 61-71.$c2021 500 $aOnline. 520 $aSustentabilidade apresenta-se como um termo importante no mundo contemporâneo, o que aumentou a busca e o desenvolvimento de materiais derivados de fibras naturais e residuais. Nesse contexto, agregando conceitos de ecodesign, design social e economia circular, utilizaram-se resíduos fibrosos do processamento do palmito pupunha para desenvolvimento de novos materiais, representados por papéis de diferentes qualidades. Foram realizados estudos, geração de alternativas e um brainstorming de possíveis aplicações para os materiais gerados, que resultaram no projeto de acessórios para o uso em restaurantes, tais como envelopes para talheres, bem como outros produtos que não foram englobados nesse artigo, como papéis bandeja e porta-copos. Com ensaios laboratoriais fora possível analisar aspectos físicos e testar a resistência dos itens perante forças externas, bem como avaliar em microscópio a aglutinação das fibras de pupunha. Dentre as características observadas destacaram-se a maleabilidade, a grande variabilidade de aplicações, a possibilidade de reprodução artesanal e a contribuição para a sustentabilidade ambiental, uma vez que se trata de materiais residuais aplicados ao Design de produto, podendo futuramente apresentar amplo uso em áreas como arquitetura e bioengenharia principalmente na parte de revestimentos. 650 $aFibra Vegetal 650 $aPalmito 650 $aPapel 650 $aPupunha 653 $aDesign social 653 $aEcodesign 653 $aNovos materiais 653 $aSustentabilidade 700 1 $aBELINI, U. L. 700 1 $aZANONI, P. R. S. 700 1 $aMAGALHAES, W. L. E.
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Embrapa Florestas (CNPF) |
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Registro Completo
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
10/09/2014 |
Data da última atualização: |
25/05/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
ALVES, A. A. C.; SETTER, TIM L. |
Afiliação: |
ALFREDO AUGUSTO CUNHA ALVES, CNPMF; TIM L. SETTER, Cornell University. |
Título: |
Response of Cassava Leaf Area Expansion to Water Deficit: Cell Proliferation, Cell Expansion and Delayed Development. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Annals of Botany, n. 94, p. 605-613, 2014. |
ISSN: |
0305-7364 |
DOI: |
10.1093/aob/mch179 |
Idioma: |
Inglês |
Conteúdo: |
Background and Aims Cassava (Manihot esculenta) is an important food crop in the tropics that has a high growth rate in optimal conditions, but also performs well in drought-prone climates. The objectives of this work were to determine the effects of water deficit and rewatering on the rate of expansion of leaves at different developmental stages and to evaluate the extent to which decreases in cell proliferation, expansion, and delay in development are responsible for reduced growth. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Key Results Leaf expansion and development were nearly halted during stress but resumed vigorously after rewatering. In advanced-stage leaves (Group 1) in which development was solely by cell expansion, expansion resumed after rewatering, but not sufficiently for cell size to equal that of controls at maturity. In Group 2 (cell proliferation), relative expansion rate and cell proliferation were delayed until rewatering, but then recovered partially, so that loss of leaf area was due to decreased cell numbers per leaf. In Group 3 (early meristematic development) final leaf area was not affected by stress, but development was delayed by 4?6 d. On a plant basis, the proportion of loss of leaf area over 26 d attributed to leaves at each developmental stage was 29, 50 and 21 % in Group 1, 2 and 3, respectively. Conclusions Although cell growth processes were sensitive to mild water deficit, they recovered to a large extent, and much of the reduction in leaf area was caused by developmental delay and a reduction in cell division in the youngest, meristematic leaves. MenosBackground and Aims Cassava (Manihot esculenta) is an important food crop in the tropics that has a high growth rate in optimal conditions, but also performs well in drought-prone climates. The objectives of this work were to determine the effects of water deficit and rewatering on the rate of expansion of leaves at different developmental stages and to evaluate the extent to which decreases in cell proliferation, expansion, and delay in development are responsible for reduced growth. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Key Results Leaf expansion and development were nearly halted during stress but resumed vigorously after rewatering. In advanced-stage leaves (Group 1) in which development was solely by cell expansion, expansion resumed after rewatering, but not sufficiently for cell size to equal that of controls at maturity. In Group 2 (cell proliferation), relative expansion rate and cell proliferation were delayed until rewatering, but then recovered partially,... Mostrar Tudo |
Thesagro: |
Irrigação; Mandioca; Manihot Esculenta; Seca. |
Thesaurus NAL: |
Cassava; Plant-water relations. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02797naa a2200229 a 4500 001 1994756 005 2023-05-25 008 2014 bl uuuu u00u1 u #d 022 $a0305-7364 024 7 $a10.1093/aob/mch179$2DOI 100 1 $aALVES, A. A. C. 245 $aResponse of Cassava Leaf Area Expansion to Water Deficit$bCell Proliferation, Cell Expansion and Delayed Development.$h[electronic resource] 260 $c2014 520 $aBackground and Aims Cassava (Manihot esculenta) is an important food crop in the tropics that has a high growth rate in optimal conditions, but also performs well in drought-prone climates. The objectives of this work were to determine the effects of water deficit and rewatering on the rate of expansion of leaves at different developmental stages and to evaluate the extent to which decreases in cell proliferation, expansion, and delay in development are responsible for reduced growth. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Methods Glasshouse-grown cassava plants were subjected to 8 d of water deficit followed by rewatering. Leaves at 15 developmental stages from nearly full size to meristematic were sampled, and epidermal cell size and number were measured on leaves at four developmental stages. Key Results Leaf expansion and development were nearly halted during stress but resumed vigorously after rewatering. In advanced-stage leaves (Group 1) in which development was solely by cell expansion, expansion resumed after rewatering, but not sufficiently for cell size to equal that of controls at maturity. In Group 2 (cell proliferation), relative expansion rate and cell proliferation were delayed until rewatering, but then recovered partially, so that loss of leaf area was due to decreased cell numbers per leaf. In Group 3 (early meristematic development) final leaf area was not affected by stress, but development was delayed by 4?6 d. On a plant basis, the proportion of loss of leaf area over 26 d attributed to leaves at each developmental stage was 29, 50 and 21 % in Group 1, 2 and 3, respectively. Conclusions Although cell growth processes were sensitive to mild water deficit, they recovered to a large extent, and much of the reduction in leaf area was caused by developmental delay and a reduction in cell division in the youngest, meristematic leaves. 650 $aCassava 650 $aPlant-water relations 650 $aIrrigação 650 $aMandioca 650 $aManihot Esculenta 650 $aSeca 700 1 $aSETTER, TIM L. 773 $tAnnals of Botany$gn. 94, p. 605-613, 2014.
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