SOME ASPECTS OF WESTERN HEMLOCK AIR PERMEABILITY

Knowledge of the variability of fluid permeability of wood in general and of western hemlock in particular is of significant importance to the primary and secondary wood products processing industry of coastal British Columbia. For the purpose of this study, ten hemlock trees were randomly selected...

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Autores principales:	Rayirath,Prasad, Avramidis,Stavros
Lenguaje:	English
Publicado:	Universidad del Bío-Bío 2008
Materias:	permeability heartwood sapwood western hemlock tracheid length density
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2008000300002
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spelling	oai:scielo:S0718-221X20080003000022009-08-19SOME ASPECTS OF WESTERN HEMLOCK AIR PERMEABILITYRayirath,PrasadAvramidis,Stavros permeability heartwood sapwood western hemlock tracheid length density Knowledge of the variability of fluid permeability of wood in general and of western hemlock in particular is of significant importance to the primary and secondary wood products processing industry of coastal British Columbia. For the purpose of this study, ten hemlock trees were randomly selected and specimens were prepared from three tree heights from each tree, namely, 1, 4 and 7 m. The air permeability of sapwood and heartwood in the longitudinal direction was measured using a dynamic method. Tracheid lengths were also obtained with a fiber quality analyzer and densities were measured by water displacement. The effect of tree height, tracheid length and density on the specific permeability of gross wood was then evaluated. The data revealed that height within the range measured has no effect on longitudinal permeability on heartwood whereas in sapwood the longitudinal permeability increases above 4 m of tree height. It was also found that longitudinal permeability was not significantly influenced by the tracheid length and wood density.info:eu-repo/semantics/openAccessUniversidad del Bío-BíoMaderas. Ciencia y tecnología v.10 n.3 20082008-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2008000300002en10.4067/S0718-221X2008000300002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	permeability heartwood sapwood western hemlock tracheid length density
spellingShingle	permeability heartwood sapwood western hemlock tracheid length density Rayirath,Prasad Avramidis,Stavros SOME ASPECTS OF WESTERN HEMLOCK AIR PERMEABILITY
description	Knowledge of the variability of fluid permeability of wood in general and of western hemlock in particular is of significant importance to the primary and secondary wood products processing industry of coastal British Columbia. For the purpose of this study, ten hemlock trees were randomly selected and specimens were prepared from three tree heights from each tree, namely, 1, 4 and 7 m. The air permeability of sapwood and heartwood in the longitudinal direction was measured using a dynamic method. Tracheid lengths were also obtained with a fiber quality analyzer and densities were measured by water displacement. The effect of tree height, tracheid length and density on the specific permeability of gross wood was then evaluated. The data revealed that height within the range measured has no effect on longitudinal permeability on heartwood whereas in sapwood the longitudinal permeability increases above 4 m of tree height. It was also found that longitudinal permeability was not significantly influenced by the tracheid length and wood density.
author	Rayirath,Prasad Avramidis,Stavros
author_facet	Rayirath,Prasad Avramidis,Stavros
author_sort	Rayirath,Prasad
title	SOME ASPECTS OF WESTERN HEMLOCK AIR PERMEABILITY
title_short	SOME ASPECTS OF WESTERN HEMLOCK AIR PERMEABILITY
title_full	SOME ASPECTS OF WESTERN HEMLOCK AIR PERMEABILITY
title_fullStr	SOME ASPECTS OF WESTERN HEMLOCK AIR PERMEABILITY
title_full_unstemmed	SOME ASPECTS OF WESTERN HEMLOCK AIR PERMEABILITY
title_sort	some aspects of western hemlock air permeability
publisher	Universidad del Bío-Bío
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-221X2008000300002
work_keys_str_mv	AT rayirathprasad someaspectsofwesternhemlockairpermeability AT avramidisstavros someaspectsofwesternhemlockairpermeability
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SOME ASPECTS OF WESTERN HEMLOCK AIR PERMEABILITY

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