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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
29/04/2022 |
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Data da última atualização: |
29/04/2022 |
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Autoria: |
SILVA, C. E. S. da; XAVIER, C. N.; JUNQUEIRA, A. A.; NEVES JUNIOR, O. de F.; CARVALHO, P. C. L. de; TORRES, A. C.; CARVALHO, A. M. de. |
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Título: |
Investigating the generation of wood wastes from mechanical processing of two forest species. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Pesquisa Florestal Brasileira, Colombo, v. 42, e202002138, 2022. |
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Páginas: |
p. 1-8. |
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ISSN: |
1983-2605 |
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DOI: |
http://doi.org/10.4336/2022.pfb.42e202002138 |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT. The circular saw is a tool commonly used for wood processing. It may be presented at different models. Considering their specificities, they can generate different amount of waste. The objective of this study was to evaluate the generation of waste from Tectona grandis L. f. and Pinus caribaea var. hondurensis, processed with two saws of the multiple type (48 and 36 teeth) and one of the universal type (28 teeth). The cutting process followed in grain direction into ninety samples, 15 for each species and saw, until the sample was completely processed. The processing time was measured and the waste was collected in each operation. ANOVA and test of multiple comparison of averages were applied. The influence of the teeth number and type of saw on the amount of waste generated was verified. The universal saw was the one that generated the highest amount of waste. It reached up to 116% more than the multiple saw, that generated the lowest amount of waste (36 teeth). P. caribaea var. hondurensis generated 7% more waste and presented shorter processing time (22%), when compared to T. grandis. TÍTULO. Investigando a geração de resíduos do processamento mecânico da madeira de duas espécies florestais RESUMO. Aserra circular é uma ferramenta comumente empregada para o processamento de madeira, sendo apresentada em diversos modelos e, por suas especificidades, podem interferir na quantidade de resíduos gerados. O objetivo deste estudo foi avaliar a geração de resíduos de Tectona grandis L. f. e Pinus caribaea var. hondurensis, processadas com duas serras do tipo múltipla (48 e 36 dentes) e uma do tipo universal (28 dentes). Foram efetuados cortes a favor da grã em noventa corpos de prova, 15 para cada espécie e serra, até o processamento completo da amostra. Foi medido o tempo de processamento e coletado o resíduo em cada operação. A ANOVA e o teste de comparação múltipla de médias foram aplicados. Constatou-se a influência do número de dentes e do tipo de serra na quantidade de resíduos gerados. A serra do tipo universal foi a que gerou maior quantidade média de resíduos, resultando em 116% a mais em comparação com a serra múltipla que gerou menor volume de resíduos (36 dentes). P. caribaea var. hondurensis gerou 7% mais resíduos e menor tempo de processamento (22%), quando comparado a T. grandis. MenosABSTRACT. The circular saw is a tool commonly used for wood processing. It may be presented at different models. Considering their specificities, they can generate different amount of waste. The objective of this study was to evaluate the generation of waste from Tectona grandis L. f. and Pinus caribaea var. hondurensis, processed with two saws of the multiple type (48 and 36 teeth) and one of the universal type (28 teeth). The cutting process followed in grain direction into ninety samples, 15 for each species and saw, until the sample was completely processed. The processing time was measured and the waste was collected in each operation. ANOVA and test of multiple comparison of averages were applied. The influence of the teeth number and type of saw on the amount of waste generated was verified. The universal saw was the one that generated the highest amount of waste. It reached up to 116% more than the multiple saw, that generated the lowest amount of waste (36 teeth). P. caribaea var. hondurensis generated 7% more waste and presented shorter processing time (22%), when compared to T. grandis. TÍTULO. Investigando a geração de resíduos do processamento mecânico da madeira de duas espécies florestais RESUMO. Aserra circular é uma ferramenta comumente empregada para o processamento de madeira, sendo apresentada em diversos modelos e, por suas especificidades, podem interferir na quantidade de resíduos gerados. O objetivo deste estudo foi avaliar a geração de resíduos de Te... Mostrar Tudo |
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Palavras-Chave: |
Plant production. |
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Thesagro: |
Produção Vegetal; Produto Florestal; Serraria. |
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Thesaurus Nal: |
Forest products; Sawmills. |
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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/doc/1142509/1/EmbrapaFlorestas-PFB-2022-InvestigatingtheGenerationOfWood.pdf
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Marc: |
LEADER 03286naa a2200301 a 4500
001 2142509
005 2022-04-29
008 2022 bl uuuu u00u1 u #d
022 $a1983-2605
024 7 $ahttp://doi.org/10.4336/2022.pfb.42e202002138$2DOI
100 1 $aSILVA, C. E. S. da
245 $aInvestigating the generation of wood wastes from mechanical processing of two forest species.$h[electronic resource]
260 $c2022
300 $ap. 1-8.
520 $aABSTRACT. The circular saw is a tool commonly used for wood processing. It may be presented at different models. Considering their specificities, they can generate different amount of waste. The objective of this study was to evaluate the generation of waste from Tectona grandis L. f. and Pinus caribaea var. hondurensis, processed with two saws of the multiple type (48 and 36 teeth) and one of the universal type (28 teeth). The cutting process followed in grain direction into ninety samples, 15 for each species and saw, until the sample was completely processed. The processing time was measured and the waste was collected in each operation. ANOVA and test of multiple comparison of averages were applied. The influence of the teeth number and type of saw on the amount of waste generated was verified. The universal saw was the one that generated the highest amount of waste. It reached up to 116% more than the multiple saw, that generated the lowest amount of waste (36 teeth). P. caribaea var. hondurensis generated 7% more waste and presented shorter processing time (22%), when compared to T. grandis. TÍTULO. Investigando a geração de resíduos do processamento mecânico da madeira de duas espécies florestais RESUMO. Aserra circular é uma ferramenta comumente empregada para o processamento de madeira, sendo apresentada em diversos modelos e, por suas especificidades, podem interferir na quantidade de resíduos gerados. O objetivo deste estudo foi avaliar a geração de resíduos de Tectona grandis L. f. e Pinus caribaea var. hondurensis, processadas com duas serras do tipo múltipla (48 e 36 dentes) e uma do tipo universal (28 dentes). Foram efetuados cortes a favor da grã em noventa corpos de prova, 15 para cada espécie e serra, até o processamento completo da amostra. Foi medido o tempo de processamento e coletado o resíduo em cada operação. A ANOVA e o teste de comparação múltipla de médias foram aplicados. Constatou-se a influência do número de dentes e do tipo de serra na quantidade de resíduos gerados. A serra do tipo universal foi a que gerou maior quantidade média de resíduos, resultando em 116% a mais em comparação com a serra múltipla que gerou menor volume de resíduos (36 dentes). P. caribaea var. hondurensis gerou 7% mais resíduos e menor tempo de processamento (22%), quando comparado a T. grandis.
650 $aForest products
650 $aSawmills
650 $aProdução Vegetal
650 $aProduto Florestal
650 $aSerraria
653 $aPlant production
700 1 $aXAVIER, C. N.
700 1 $aJUNQUEIRA, A. A.
700 1 $aNEVES JUNIOR, O. de F.
700 1 $aCARVALHO, P. C. L. de
700 1 $aTORRES, A. C.
700 1 $aCARVALHO, A. M. de
773 $tPesquisa Florestal Brasileira, Colombo$gv. 42, e202002138, 2022.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura; Embrapa Uva e Vinho. |
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Data corrente: |
18/09/2018 |
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Data da última atualização: |
27/04/2019 |
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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: |
BASSANEZI, R. B.; CZERMAINSKI, A. B. C.; BARBOSA, F. F. L.; MOREIRA, A. S.; RIBEIRO JUNIOR, P. J.; KRAINSKI, E. T.; AMORIM, L. |
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Afiliação: |
R. B. BASSANEZI, Fundecitrus; ANA BEATRIZ COSTA CZERMAINSKI, CNPUV; FRANCISCO FERRAZ LARANJEIRA BARBOSA, CNPMF; ALECIO SOUZA MOREIRA, CNPMF; P. J. RIBEIRO JUNIOR, UFPR; E. T. KRAINSKI, UFPR; L. AMORIM, USP. |
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Título: |
Spatial patterns of the Citrus leprosis virus and its associated mite vector in systems without intervention. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Plant Pathology, 2018.[online] |
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DOI: |
10.1111/ppa.12930 |
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Idioma: |
Inglês |
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Notas: |
Publicação impressa em: Plant Pathology, v. 68, p. 85-93, 2019. |
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Conteúdo: |
Leprosis is caused by the Citrus leprosis virus cytoplasmic type and is vectored by the mite Brevipalpus yothersi. Miticide applications, which cost $54 million annually, are based on inspection for the presence of mites. The aim of the present study was to characterize the spatial patterns of B. yothersi-infested trees and trees with leprosis symptoms for further improvement in sampling and disease control. The presence of mites and the occurrence of leprosis were assessed over two years in 1160 Valencia trees and 720 Natal trees in a commercial sweet orange grove in Sao Paulo State, Brazil. To assess the natural growth and dispersal of mites and leprosis, mite populations were not controlled during the experimental period. Maps of mite-infested trees and trees with leprosis symptoms were analysed at three different levels of spatial hierarchy using complementary methods, i.e. among adjacent trees within and across rows, within quadrats, and the strength and orientation of aggregation among quadrats. The study showed that the spatial patterns of virus-infected and mite-infested trees were different, with a strong aggregation pattern of trees with leprosis symptoms that increased over time. Conversely, the spatial pattern of B. yothersi showed randomness or weak aggregation at all three spatial hierarchical levels. Disease incidence increased steadily in plots of both cultivars, unlike in miteinfested trees where incidence fluctuated over time. These results have important implications for the development of better management strategies for leprosis. Sampling methods and action thresholds for mite control should consider primary disease inoculum in addition to the incidence of mites. Keywords: Brevipalpus yothersi, Citrus leprosis virus, Citrus sinensis, epidemiology, flat mite, spatial analysis MenosLeprosis is caused by the Citrus leprosis virus cytoplasmic type and is vectored by the mite Brevipalpus yothersi. Miticide applications, which cost $54 million annually, are based on inspection for the presence of mites. The aim of the present study was to characterize the spatial patterns of B. yothersi-infested trees and trees with leprosis symptoms for further improvement in sampling and disease control. The presence of mites and the occurrence of leprosis were assessed over two years in 1160 Valencia trees and 720 Natal trees in a commercial sweet orange grove in Sao Paulo State, Brazil. To assess the natural growth and dispersal of mites and leprosis, mite populations were not controlled during the experimental period. Maps of mite-infested trees and trees with leprosis symptoms were analysed at three different levels of spatial hierarchy using complementary methods, i.e. among adjacent trees within and across rows, within quadrats, and the strength and orientation of aggregation among quadrats. The study showed that the spatial patterns of virus-infected and mite-infested trees were different, with a strong aggregation pattern of trees with leprosis symptoms that increased over time. Conversely, the spatial pattern of B. yothersi showed randomness or weak aggregation at all three spatial hierarchical levels. Disease incidence increased steadily in plots of both cultivars, unlike in miteinfested trees where incidence fluctuated over time. These results have important i... Mostrar Tudo |
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Palavras-Chave: |
Brevipalpus yothersi; Citrus leprosis virus; Flat mite; Leprosis; Spatial analysis; Spatial patterns. |
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Thesagro: |
Citrus Sinensis; Fruta Cítrica. |
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Thesaurus NAL: |
Epidemiology. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/190446/1/Bassanezi-et-al-2019-Plant-Pathology.pdf
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Marc: |
LEADER 02820naa a2200325 a 4500
001 2103966
005 2019-04-27
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1111/ppa.12930$2DOI
100 1 $aBASSANEZI, R. B.
245 $aSpatial patterns of the Citrus leprosis virus and its associated mite vector in systems without intervention.$h[electronic resource]
260 $c2018
500 $aPublicação impressa em: Plant Pathology, v. 68, p. 85-93, 2019.
520 $aLeprosis is caused by the Citrus leprosis virus cytoplasmic type and is vectored by the mite Brevipalpus yothersi. Miticide applications, which cost $54 million annually, are based on inspection for the presence of mites. The aim of the present study was to characterize the spatial patterns of B. yothersi-infested trees and trees with leprosis symptoms for further improvement in sampling and disease control. The presence of mites and the occurrence of leprosis were assessed over two years in 1160 Valencia trees and 720 Natal trees in a commercial sweet orange grove in Sao Paulo State, Brazil. To assess the natural growth and dispersal of mites and leprosis, mite populations were not controlled during the experimental period. Maps of mite-infested trees and trees with leprosis symptoms were analysed at three different levels of spatial hierarchy using complementary methods, i.e. among adjacent trees within and across rows, within quadrats, and the strength and orientation of aggregation among quadrats. The study showed that the spatial patterns of virus-infected and mite-infested trees were different, with a strong aggregation pattern of trees with leprosis symptoms that increased over time. Conversely, the spatial pattern of B. yothersi showed randomness or weak aggregation at all three spatial hierarchical levels. Disease incidence increased steadily in plots of both cultivars, unlike in miteinfested trees where incidence fluctuated over time. These results have important implications for the development of better management strategies for leprosis. Sampling methods and action thresholds for mite control should consider primary disease inoculum in addition to the incidence of mites. Keywords: Brevipalpus yothersi, Citrus leprosis virus, Citrus sinensis, epidemiology, flat mite, spatial analysis
650 $aEpidemiology
650 $aCitrus Sinensis
650 $aFruta Cítrica
653 $aBrevipalpus yothersi
653 $aCitrus leprosis virus
653 $aFlat mite
653 $aLeprosis
653 $aSpatial analysis
653 $aSpatial patterns
700 1 $aCZERMAINSKI, A. B. C.
700 1 $aBARBOSA, F. F. L.
700 1 $aMOREIRA, A. S.
700 1 $aRIBEIRO JUNIOR, P. J.
700 1 $aKRAINSKI, E. T.
700 1 $aAMORIM, L.
773 $tPlant Pathology, 2018.[online]
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Embrapa Uva e Vinho (CNPUV) |
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