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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
12/08/2022 |
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Data da última atualização: |
15/08/2022 |
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Autoria: |
TEIXEIRA, D. E.; ALMEIDA, J. G. de; ALMEIDA, S. A. de O.; BAIA, M. J. F.; ROCHA, J. G.; LOPES, L. F.; MELO, C. K. A. de. |
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Afiliação: |
DIVINO ETERNO TEIXEIRA, Serviço Florestal Brasileiro; JAIME GONÇALVES DE ALMEIDA, Universidade de Brasília; SERGIO ALBERTO DE OLIVEIRA ALMEIDA, Serviço Florestal Brasileiro; MAÍRLA JULIA FREITAS BAIA, Universidade de Brasília; JOYCE GONÇALVES ROCHA, Universidade de Brasília; LAÍS FERREIRA LOPES, Universidade de Brasília; CRISTHIAN KELVIN AMARO DE MELO, Universidade de Brasília. |
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Título: |
Piso laminado de bambu-MDF com tratamento termomecânico. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Pesquisa Florestal Brasileira, v. 42, e202002091, p. 1-9, 2022. |
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Idioma: |
Português |
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Conteúdo: |
Resumo: Os pisos com revestimento de madeira são produtos engenheirados, geralmente produzidos com lâminas coladas sobre chapa de compensado ou painéis de madeira reconstituída, os quais possuem larga aceitação no mercado brasileiro. Neste trabalho, objetivou-se desenvolver um piso composto de bambu e MDF, com uso de tratamento termomecânico, e determinar as suas propriedades físicas e mecânicas em comparação com um piso laminado comercial. As amostras de piso bambu-MDF produzidas foram divididas em: uma parte submetida a pós-tratamento termomecânico (temperatura de 160 oC e pressão de 1 MPa por 15 min) e outra sem tratamento. Os resultados mostraram que o bambu pode ser associado ao MDF para produção de pisos. O piso de bambu-MDF é igual ou superior ao piso comercial em quase todas as propriedades estudadas, exceto na resistência à umidade, como observado pelos testes de absorção e inchamento. O piso de bambu-MDF é superior ao comercial nos principais requisitos de dureza Janka e resistência à abrasão. Abstract: The wood-coated floors are engineered products, usually produced with veneers glued over plywood or reconstituted wood panels, which have wide acceptance in the Brazilian market. In this work the objective was to develop a floor composed of bamboo and MDF, with the use of thermo-mechanical treatment, as well as to determine the physical and mechanical properties when compared to commercial laminate flooring. The produced bamboo-MDF floors samples were divided in one part subjected to thermo-mechanical post-treatment (temperature of 160 oC and pressure of 1 MPa for 15 min) and the other without treatment. The results showed that bamboo can be combined with MDF for flooring production. The experimental bamboo-MDF floor was similar or superior to the commercial laminate floor in almost all the studied properties, except resistance to humidity, as shown by the results of absorption and swelling tests. The bamboo-MDF floor was superior to the commercial product in the main requirements of Janka hardness and abrasion resistance. MenosResumo: Os pisos com revestimento de madeira são produtos engenheirados, geralmente produzidos com lâminas coladas sobre chapa de compensado ou painéis de madeira reconstituída, os quais possuem larga aceitação no mercado brasileiro. Neste trabalho, objetivou-se desenvolver um piso composto de bambu e MDF, com uso de tratamento termomecânico, e determinar as suas propriedades físicas e mecânicas em comparação com um piso laminado comercial. As amostras de piso bambu-MDF produzidas foram divididas em: uma parte submetida a pós-tratamento termomecânico (temperatura de 160 oC e pressão de 1 MPa por 15 min) e outra sem tratamento. Os resultados mostraram que o bambu pode ser associado ao MDF para produção de pisos. O piso de bambu-MDF é igual ou superior ao piso comercial em quase todas as propriedades estudadas, exceto na resistência à umidade, como observado pelos testes de absorção e inchamento. O piso de bambu-MDF é superior ao comercial nos principais requisitos de dureza Janka e resistência à abrasão. Abstract: The wood-coated floors are engineered products, usually produced with veneers glued over plywood or reconstituted wood panels, which have wide acceptance in the Brazilian market. In this work the objective was to develop a floor composed of bamboo and MDF, with the use of thermo-mechanical treatment, as well as to determine the physical and mechanical properties when compared to commercial laminate flooring. The produced bamboo-MDF floors samples were divided in one... Mostrar Tudo |
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Palavras-Chave: |
Dureza; Engineered flooring; Piso engenheirado; Resistance to abrasion; Resistência à abrasão. |
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Thesaurus Nal: |
Hardness. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/238426/1/EmbrapaFlorestas-PFB-2022-PisoLaminadoBambuMDF.pdf
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Marc: |
LEADER 02853naa a2200265 a 4500
001 2145401
005 2022-08-15
008 2022 bl uuuu u00u1 u #d
100 1 $aTEIXEIRA, D. E.
245 $aPiso laminado de bambu-MDF com tratamento termomecânico.$h[electronic resource]
260 $c2022
520 $aResumo: Os pisos com revestimento de madeira são produtos engenheirados, geralmente produzidos com lâminas coladas sobre chapa de compensado ou painéis de madeira reconstituída, os quais possuem larga aceitação no mercado brasileiro. Neste trabalho, objetivou-se desenvolver um piso composto de bambu e MDF, com uso de tratamento termomecânico, e determinar as suas propriedades físicas e mecânicas em comparação com um piso laminado comercial. As amostras de piso bambu-MDF produzidas foram divididas em: uma parte submetida a pós-tratamento termomecânico (temperatura de 160 oC e pressão de 1 MPa por 15 min) e outra sem tratamento. Os resultados mostraram que o bambu pode ser associado ao MDF para produção de pisos. O piso de bambu-MDF é igual ou superior ao piso comercial em quase todas as propriedades estudadas, exceto na resistência à umidade, como observado pelos testes de absorção e inchamento. O piso de bambu-MDF é superior ao comercial nos principais requisitos de dureza Janka e resistência à abrasão. Abstract: The wood-coated floors are engineered products, usually produced with veneers glued over plywood or reconstituted wood panels, which have wide acceptance in the Brazilian market. In this work the objective was to develop a floor composed of bamboo and MDF, with the use of thermo-mechanical treatment, as well as to determine the physical and mechanical properties when compared to commercial laminate flooring. The produced bamboo-MDF floors samples were divided in one part subjected to thermo-mechanical post-treatment (temperature of 160 oC and pressure of 1 MPa for 15 min) and the other without treatment. The results showed that bamboo can be combined with MDF for flooring production. The experimental bamboo-MDF floor was similar or superior to the commercial laminate floor in almost all the studied properties, except resistance to humidity, as shown by the results of absorption and swelling tests. The bamboo-MDF floor was superior to the commercial product in the main requirements of Janka hardness and abrasion resistance.
650 $aHardness
653 $aDureza
653 $aEngineered flooring
653 $aPiso engenheirado
653 $aResistance to abrasion
653 $aResistência à abrasão
700 1 $aALMEIDA, J. G. de
700 1 $aALMEIDA, S. A. de O.
700 1 $aBAIA, M. J. F.
700 1 $aROCHA, J. G.
700 1 $aLOPES, L. F.
700 1 $aMELO, C. K. A. de
773 $tPesquisa Florestal Brasileira$gv. 42, e202002091, p. 1-9, 2022.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação; Embrapa Mandioca e Fruticultura. |
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Data corrente: |
12/01/2011 |
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Data da última atualização: |
18/06/2013 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
RUSSO, M. S. T.; CARDINALI, M.; MILORI, D. M. B. P.; PEREIRA, F. M. V.; MARTINS, P. K.; FREITAS-ASTÚA, J. |
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Afiliação: |
DEBORA MARCONDES BASTOS P MILORI, CNPDIA. |
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Título: |
Study of laser-induced fluorescence imaging in asymptomatic leaves from citrus plants inoculated with candidatus liberibacter. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Citrus research & technology, Cordeirópolis, v. 31, suplemento, p. 122, 2010. Proceedings of the 18 conference international organization citrus virologists, 2010, Campinas. |
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Idioma: |
Inglês |
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Conteúdo: |
Citrus greening or huanglongbing (HLB) is a devastating disease that has been causing serious problems to citrus cultivation. Some analytical methods have been reported for diagnosis of this disease, mainly DNA-based techniques of Candidatus Liberibacter species, which are the causal agents. In general, most of these developed methods involve PCR (polymerase chain reaction). However, methods based on PCR cannot be used in large-scale to build disease distribution maps. The visual inspection, usually adopted, can lead to misleading diagnoses, since the symptoms are easily mistaken with others problems and the disease has a long asymptomatic phase. Aiming the development of a new method for early diagnosis of this malady, leaves from inoculated and healthy (control group) plants were assessed using laser- induced fluorescence imaging (LIFI). The plants were measured monthly and the evolution of the bacteria on inoculated plants was monitored by RT-qPCR (real-time quantitative PCR) amplification of CLas sequences. A laser emitting at 470 nm was used to excite the fluorescence of chlorophyll and other metabolites present on the leaf. Each image was associated to histograms of colours (colourgrams) and a matrix. For the investigations of data, principal components analysis were made for the categories of the colourgram (scales of red, blue and green, luminosity, relative red, blue and green, hue, saturation and intensity). Preliminary results showed that there are differences in the images obtained from healthy and inoculated plants, indicating a great potential of the technique to perform early diagnoses in large scale that are economically viable. MenosCitrus greening or huanglongbing (HLB) is a devastating disease that has been causing serious problems to citrus cultivation. Some analytical methods have been reported for diagnosis of this disease, mainly DNA-based techniques of Candidatus Liberibacter species, which are the causal agents. In general, most of these developed methods involve PCR (polymerase chain reaction). However, methods based on PCR cannot be used in large-scale to build disease distribution maps. The visual inspection, usually adopted, can lead to misleading diagnoses, since the symptoms are easily mistaken with others problems and the disease has a long asymptomatic phase. Aiming the development of a new method for early diagnosis of this malady, leaves from inoculated and healthy (control group) plants were assessed using laser- induced fluorescence imaging (LIFI). The plants were measured monthly and the evolution of the bacteria on inoculated plants was monitored by RT-qPCR (real-time quantitative PCR) amplification of CLas sequences. A laser emitting at 470 nm was used to excite the fluorescence of chlorophyll and other metabolites present on the leaf. Each image was associated to histograms of colours (colourgrams) and a matrix. For the investigations of data, principal components analysis were made for the categories of the colourgram (scales of red, blue and green, luminosity, relative red, blue and green, hue, saturation and intensity). Preliminary results showed that there are differences in ... Mostrar Tudo |
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Palavras-Chave: |
Evento; Huanglongbing; Plant disease. |
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Thesagro: |
Bactéria; Doença de Planta; Fruta Cítrica; Greening. |
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Thesaurus NAL: |
Candidatus Liberibacter; Citrus. |
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Categoria do assunto: |
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X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/84535/1/Proci-10.00257.pdf
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Marc: |
LEADER 02611nam a2200277 a 4500
001 1881236
005 2013-06-18
008 2010 bl uuuu u00u1 u #d
100 1 $aRUSSO, M. S. T.
245 $aStudy of laser-induced fluorescence imaging in asymptomatic leaves from citrus plants inoculated with candidatus liberibacter.
260 $aCitrus research & technology, Cordeirópolis, v. 31, suplemento, p. 122, 2010. Proceedings of the 18 conference international organization citrus virologists, 2010, Campinas.$c2010
520 $aCitrus greening or huanglongbing (HLB) is a devastating disease that has been causing serious problems to citrus cultivation. Some analytical methods have been reported for diagnosis of this disease, mainly DNA-based techniques of Candidatus Liberibacter species, which are the causal agents. In general, most of these developed methods involve PCR (polymerase chain reaction). However, methods based on PCR cannot be used in large-scale to build disease distribution maps. The visual inspection, usually adopted, can lead to misleading diagnoses, since the symptoms are easily mistaken with others problems and the disease has a long asymptomatic phase. Aiming the development of a new method for early diagnosis of this malady, leaves from inoculated and healthy (control group) plants were assessed using laser- induced fluorescence imaging (LIFI). The plants were measured monthly and the evolution of the bacteria on inoculated plants was monitored by RT-qPCR (real-time quantitative PCR) amplification of CLas sequences. A laser emitting at 470 nm was used to excite the fluorescence of chlorophyll and other metabolites present on the leaf. Each image was associated to histograms of colours (colourgrams) and a matrix. For the investigations of data, principal components analysis were made for the categories of the colourgram (scales of red, blue and green, luminosity, relative red, blue and green, hue, saturation and intensity). Preliminary results showed that there are differences in the images obtained from healthy and inoculated plants, indicating a great potential of the technique to perform early diagnoses in large scale that are economically viable.
650 $aCandidatus Liberibacter
650 $aCitrus
650 $aBactéria
650 $aDoença de Planta
650 $aFruta Cítrica
650 $aGreening
653 $aEvento
653 $aHuanglongbing
653 $aPlant disease
700 1 $aCARDINALI, M.
700 1 $aMILORI, D. M. B. P.
700 1 $aPEREIRA, F. M. V.
700 1 $aMARTINS, P. K.
700 1 $aFREITAS-ASTÚA, J.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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