Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/38541
Registro completo de metadados
Campo DCValorIdioma
dc.creatorHein, P. R. G.-
dc.creatorSilva, J. R. M.-
dc.creatorBrancheriau, L.-
dc.date.accessioned2020-01-17T18:38:44Z-
dc.date.available2020-01-17T18:38:44Z-
dc.date.issued2013-
dc.identifier.citationHEIN, P. R. G.; SILVA, J. R. M.; BRANCHERIAU, L. Correlations among microfibril angle, density, modulus of elasticity, modulus of rupture and shrinkage in 6-year-old Eucalyptus urophylla × E. grandis. Maderas. Ciencia y Tecnología, [S.l.], v. 15, n. 2, p. 171-182, 2013.pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/38541-
dc.description.abstractThe cellulose microfibril angle (MFA) in the cell wall is known to have major effects on wood stiffness and shrinkage. However, its influence on juvenile wood traits is not fully understood, especially in Eucalyptus. The aim of this study was to evaluate the relationships among MFA, density (ρ), dynamic modulus of elasticity (E), modulus of rupture (MOR), and shrinkage (δ) in 6-year-old Eucalyptus urophylla × E. grandis. Small clear specimens (L 410 mm x R 25 mm x T 25 mm) were cut from central boards for the determination of E and MOR. Cubic samples (25 mm³) were removed after the dynamic and static tests to evaluate ρ and δ. MFA was finally measured by X-ray diffraction on small strips coming from the cubic samples. A quasi-absence of statistical link was found for MFA - δ and MFA - ρ (R²<0.20). The parameter ρ/MFA was used to estimate E (R²=0.66) and MOR (R²=0.37). In a next step, the additive and interaction effects were investigated using multiple linear regressions with a forward selection method. The property E was found to be linked only with the additive effects of ρ and 1/MFA (R²=0.76). The additive and interaction effects were all significant for MOR (R²=0.54). This study showed that a general model including both additive and interaction effects should be used for the prediction of the modulus of elasticity and the modulus of rupture.pt_BR
dc.languageen_USpt_BR
dc.publisherUniversidad del Bío-Bíopt_BR
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rightsacesso abertopt_BR
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.sourceMaderas. Ciencia y Tecnologíapt_BR
dc.subjectEucalyptuspt_BR
dc.subjectMicrofibril anglept_BR
dc.subjectX-ray diffractionpt_BR
dc.subjectDynamic moduluspt_BR
dc.subjectModulus of rupturept_BR
dc.titleCorrelations among microfibril angle, density, modulus of elasticity, modulus of rupture and shrinkage in 6-year-old Eucalyptus urophylla × E. grandispt_BR
dc.typeArtigopt_BR
Aparece nas coleções:DCF - Artigos publicados em periódicos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
ARTIGO_Correlations among microfibril angle, density, modulus of elasticity.pdf1,06 MBAdobe PDFVisualizar/Abrir


Este item está licenciada sob uma Licença Creative Commons Creative Commons