Results 91 to 100 of about 23,679 (205)

NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOOD

open access: yesBioResources, 2010
The durability of Scots pine heartwood has previously been shown to be affected by the industrial drying process of sawn lumber. The durability of heartwood from boards dried at temperatures between 20°C-110°C was studied by measuring the mass loss in a ...
Margot Sehlstedt-Persson, Olov Karlsson
doaj  

Asymptotic and numerical analysis of a porous medium model for transpiration-driven sap flow in trees

open access: yes, 2017
We develop a 3D porous medium model for sap flow within a tree stem, which consists of a nonlinear parabolic partial differential equation with a suitable transpiration source term. Using an asymptotic analysis, we derive approximate series solutions for
Janbek, Bebart Maisar, Stockie, John M.
core  

A kocsányos tölgy (Quercus robur L.) gesztesedédének és geszthibáinak kémiai vizsgálata = Chemical investigation of heartwood formation and heartwood defects of Pedunculate oak (Quercus robur L.) [PDF]

open access: yes, 2009
A kocsányos tölgy (Quercus robur L.) értékes, kötelezően színesen gesztesedő fafaj. Egyre elterjedtebb geszthibája a "gyűrűs" elszíneződés, amely jelentős értékvesztést okoz.
Albert, Levente   +6 more
core  

Vertical heartwood variation patterns and prediction of heartwood volume in Pinus canariensis Sm.

open access: yesForest Ecology and Management, 2003
Heartwood and sapwood distribution along the stem were assayed in 26 Canary Island pines growing along the natural range of the species at the Canary Archipelago. Trees were sampled at breast height and approximately every 2 m up to the lowest section without heartwood.
Climent, J.   +3 more
openaire   +3 more sources

Anatomy, drying behaviour and mechanical properties of lesser used wood species from Mozambique [PDF]

open access: yes, 2010
The study provides an overview of Mozambique timber sector, descriptive and comparative wood anatomy, drying experiments and interrelationships between mechanics, density and anatomical features of lesser used species from Mozambique.
Uetimane Junior, Ernesto
core  

Gross heating value of various shade-trees wood in coffee plantation in Costa Rica and its relation with extractives and specific gravity

open access: yesCoffee and Cocoa Research Journal, 2018
Shade-trees with energy use in coffee plantations are an important alternative to increase profitability in groforestry systems. The aim of this study was to investigate gross calorific value (GCV) of 15 shade-tree species in coffee plantations in Costa ...
Roger Moya   +2 more
doaj   +1 more source

Wood Preserving Chemicals and Procedures [PDF]

open access: yes, 1986
PDF pages ...
Touse, Robert D.
core  

Utilizing Cypress to improve the decay and termite resistance of OSB panels [PDF]

open access: yes, 2008
OSB panels were manufactured with mixture of pine and cypress heartwood and lignin and tannin based resins in order to propose an eco-friendly wood composite.
Amusant, Nadine   +5 more
core  

Pengukuran Kadar Ekstraktif dan Sifat Warna pada Kayu Teras Jati Doreng (Tectona grandis)

open access: yesJurnal Ilmu Kehutanan, 2009
Measurement of Extractive Content and Color properties on Black-streaked Heartwood of Teak (Tectona grandis) Teak (Tectona grandis L.f) in certain areas of Java usually has black streaked heartwood or has been known as "doreng". In general, the color of
Ganis Lukmandaru
doaj   +1 more source

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