Results 101 to 110 of about 10,701 (235)

What was behind the bark? : An assessment of decay among urban Tilia, Betula and Acer trees felled as hazardous in the Helsinki City area [PDF]

open access: yes, 2009
Old trees growing in urban environments are often felled due to symptoms of mechanical defects that could be hazardous to people and property.
Terho, Minna
core   +1 more source

Anatomical and Morphological Features of Scots Pine Heartwood Formation in Two Forest Types in the Middle Taiga Subzone [PDF]

open access: gold, 2022
Tatiana V. Tarelkina   +5 more
openalex   +1 more source

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  

The Pathogenic White-Rot Fungus Heterobasidion parviporum Responds to Spruce Xylem Defense by Enhanced Production of Oxalic Acid

open access: yesMolecular Plant-Microbe Interactions, 2012
Pathogen challenge of tree sapwood induces the formation of reaction zones with antimicrobial properties such as elevated pH and cation content. Many fungi lower substrate pH by secreting oxalic acid, its conjugate base oxalate being a reductant as well ...
Nina Elisabeth Nagy   +6 more
doaj   +1 more source

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  

Evaluation of wood pretreatments on oak and cedar [PDF]

open access: yes, 1997
In a separate study, we conducted a series of high-precision radiocarbon measurements using wood from Britain and New Zealand to investigate interhemispheric offsets and possible temporal variations.
Head, M.J.   +4 more
core   +2 more sources

The effect of lignin content and lignin modification on Norway spruce wood properties and decay resistance [PDF]

open access: yes, 2008
Three different Norway spruce cutting clones growing in three environments with different soil and climatic conditions were studied. The purpose was to follow variation in the radial growth rate, wood properties and lignin content and to modify wood ...
Raiskila, Sanni
core   +1 more source

Evaluation of red sanders (Pterocarpus santalinus L.f.) germplasm for conservation and breeding

open access: yesGenetic Resources
Pterocarpus santalinus L.f., an endangered species endemic to India’s Eastern Ghats, faces threats from illegal trade due to high demand and limited legal supply.
Kumbarahally Murthigowda Shivaprasad   +4 more
doaj   +1 more source

Flammability behaviour of wood and a review of the methods for its reduction [PDF]

open access: yes, 2013
Wood is one of the most sustainable, aesthetically pleasing and environmentally benign materials. Not only is wood often an integral part of structures, it is also the main source of furnishings found in homes, schools, and offices around the world.
Hull, T Richard, Lowden, Laura
core   +1 more source

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