Longitudinal and Transverse Variation in the Physical Properties of Wood Red Tauari
Material type:
ArticleSubject(s): Online resources:
In:
Floresta e Ambiente (Brazil) v. 26(3) p. 1-12; (2019)Summary:
ABSTRACT
The objective of this work was to study the fiber length variation, retractability and basic density,
in the core-bark direction and along the heig of the red tauari wood (Cariniana micrantha Ducke).
The stem was evaluated in the discs, from core to bark, corresponding to 0%, 25%, 50%, 75%
and 100%. At the commercial height of the tree the evaluation was carried out in the Base, DBH,
50%, 75% and 100%. Three trees were collected and 5 discs of 12 cm of thickness were taken from
each tree the heights: Base, DAP, 50%, 75% and 100%. Results indicated that the fiber length
increases in the radial direction core-bark and decreases in the longitudinal direction, from
base to top. The analysis of the basic density varied in the core-bark direction, with tendency to
increase from the position of 50% (heartwood), then decreasing in the sapwood region. Total
volumetric and linear contractions decreased in the core-bark direction.
Keywords: basic density, shrinkage, fiber.
| Item type | Current library | Collection | Call number | Vol info | Status | Date due | Barcode |
|---|---|---|---|---|---|---|---|
Periódicos
|
Biblioteca Nacional de Agricultura - Binagri Agrobase - Periódicos | Periódicos agrícolas | 2019 26(3) | Online | 2025-0451 |
Publicação on-line; 29 ref.; 10 tables; 2 illus.; Summary (En)
ABSTRACT
The objective of this work was to study the fiber length variation, retractability and basic density,
in the core-bark direction and along the heig of the red tauari wood (Cariniana micrantha Ducke).
The stem was evaluated in the discs, from core to bark, corresponding to 0%, 25%, 50%, 75%
and 100%. At the commercial height of the tree the evaluation was carried out in the Base, DBH,
50%, 75% and 100%. Three trees were collected and 5 discs of 12 cm of thickness were taken from
each tree the heights: Base, DAP, 50%, 75% and 100%. Results indicated that the fiber length
increases in the radial direction core-bark and decreases in the longitudinal direction, from
base to top. The analysis of the basic density varied in the core-bark direction, with tendency to
increase from the position of 50% (heartwood), then decreasing in the sapwood region. Total
volumetric and linear contractions decreased in the core-bark direction.
Keywords: basic density, shrinkage, fiber.
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