Your search resulted in 56 documents. Displaying 25 entries per page.
Characterization of cell wall morphology and water-soluble extractives in Japanese larch decayed by white-pocket-rot fungi
2024 - IRG/WP 24-11034
Porodaedalea chrysoloma (Fr.) Fiasson & Niemelä is a basidiomycete that can cause white-rot decay in Japanese larch (Larix kaempferi) heartwood. P. chrysoloma is a white-rot fungus with a unique pattern that causes white-pocket-rot in the xylem of Japanese larch. However, the mechanism by which P. chrysoloma yields the pattern of white-pocket-rot in Japanese larch heartwood remains unclear. Thus,...
Y Mori, H Arai, T Ito, H Hashitani, K Yamashita, Y Ota, M Kiguchi
Evaluation of the water exclusion ability and inherent bioactivity of heartwood against decay in Japanese and European wood species via above-ground exposure and water absorption tests
2024 - IRG/WP 24-40998
The natural durability of wood has been thought to mainly depend on bioactive extractives and the water exclusion ability. To clarify the contribution of each factor to wood durability, above-ground exposure tests were conducted on Japanese and European wood species. A double-layer test was carried out using heartwood specimens of four wood species, i.e., Japanese cedar, Japanese cypress, Scots pi...
T Osawa, R Noda, K Yamamoto
DURALARCH – Suitability of selected coloured coniferous heartwoods of different origin for their use in outdoor applications
2025 - IRG/WP 25-11064
For outdoor above-ground applications with high demands on biological durability, there are only a few softwoods available that also have high density and strength characteristics. One of the most important timbers with these material properties is Siberian larch (Larix sibirica, Larix gmelinii), which is available in sufficient quantities due to its large distribution area. Imports of Siberian la...
C Brischke, J Appelt, G Koch, S Majer, M Nopens, R Stirling, D Wong
Influence of incising methods and wood moisture content on ‘deep penetration treatment’ in Japanese cedar and larch
2025 - IRG/WP 25-20749
To expand applicability of ‘deep penetration treatment’, a solvent-borne and non-pressure treatment that is commonly coupled with roller-type incising using a flat blade, we investigated drill and laser machining as alternative incising methods and examined the influence of wood moisture content on the preservative penetration. Various incising methods were applied to heartwood of Japanese ced...
S Taira, T Miyauchi, S Isaji, H Matsunaga
Furfurylation of wood with white pocket rot caused by Porodaedalea chrysoloma
2025 - IRG/WP 25-30819
Japanese larch (Larix kaempferi [Lamb.] Carr) is one of the major softwood plantation species in Japan. This tree is an important source of building materials or civil engineering that require strength. However, aged larch trees often suffer damage caused by wood decay fungi under natural conditions. Porodaedalea chrysoloma (Fr.) Fiasson & Niemelä is a basidiomycete and a stem heart rot fungal sp...
Y Mori, Yamashita, Y Ota, M Kiguchi
Investigation of Pressure-Treated Foundations with Wood Preservative and Termite Control in Existing Wooden Houses in Japan
2025 - IRG/WP 25-50402
Japan has extremely limited natural resources. Therefore, it is necessary to build a circular economy in which waste and other recyclable resources are effectively utilized in order to achieve sustainable development. This study aims to investigate the degradation of existing wooden houses and to contribute to the reuse of existing houses and the reuse of building materials during demolition. We i...
K Usami, T Kawada, H Ishiyama