Sofia Knapic

TL;DR: In this article, a review on cork as a natural, renewable and sustainable construction raw material is presented, focusing on the application of cork in buildings and infrastructures, such as insulation, wear-resistance and durability.

TL;DR: A prospective study of nine eucalypt species aiming at a pulping use by an early assessment of wood anatomical features, including cell biometry and proportion, and morphological fibre ratios, which seems promising to further study E. maculata, E. ovata and E. sideroxylon as potential new paper making eucallypt species.

TL;DR: In this paper, the chemical composition of Eucalyptus sideroxylon bark and the antioxidant properties of its polar extractives were described for the first time, and large pockets of kino were observed formed by the breaking down of tissues of the outer phloem.

Abstract: Summary The development of heartwood and sapwood in blackwood ( Acacia melanoxylon R Br) was studied in a total of 20 trees with a 40-cm-diameter class sampled over four stands in northern Portugal at harvest for timber production Stem discs with 5-cm thickness were taken at different height levels (stem base and 5, 15, 35, 50, 65, 75, 85 and 90 per cent of total height) Crosssectional area and heartwood area were measured by image analysis Heartwood represented a substantial part of the trees and within the tree it attained on average 81 per cent of total height, and represented 69, 62, 58 and 44 per cent of the stem cross-sectional area, respectively, at 5, 35, 50 and 65 per cent of total tree height The heartwood followed closely the stem wood profi le both axially and radially Estimation of heartwood dimensions from external wood diameters (either over or under bark) was possible using a linear model, which had a very high correlation coeffi cient ( R 2 = 097) The sapwood radial width showed a very small variation within and between trees and maintained a constant value of 31 mm up to ∼ 65 per cent of tree height No site infl uence was found for the heartwood development and the between-tree variation was small The species and the sampled individuals in Portugal showed potential for the diversifi cation of forest production and increasing the industrial supply of a valuable timber hardwood

TL;DR: The radial variation of ring width and wood density was studied in cork oaks (Quercus suber) using microdensitometry and there were no significant differences in the mean density components between never debarksed trees and trees under cork production but their outwards decrease was accentuated in the never debarked trees.