Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2005
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No abstract has been registered
Authors
Per Gundersen Bjørn Berg W. S. Currie N. B. Dise B. A. Emmett V. Gauci M. Holmberg O. Janne Kjønaas J. Mol-Dijkstra C. van der Salm I. K. Schmidt A. Tietema W. W. Wessel Live Semb Vestgarden C. Akselsson W. De Vries M. Forsius H. Kros Egbert Matzner Filip Moldan K. J. Nadelhoffer L.-O. Nilsson G. J. Reinds U. Rosengren Arne O. Stuanes Richard WrightAbstract
No abstract has been registered
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No abstract has been registered
Authors
Carl-Magnus Mörth Peter Torssander O. Janne Kjønaas Arne O. Stuanes Filip Moldan Reiner GieslerAbstract
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Authors
Gry AlfredsenAbstract
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Abstract
In this study modified wood samples were tested according to the extended standardised test procedures of ENV 807 (3 types of soils). A Round Robin test was carried out at two laboratories: Swedish National Testing and Research Institute and Norwegian Forest Research Institute.The different soil types used were conifer forest soil (pH 4.6), soil from the Simlngsdalen test field (pH 5.2) and garden compost soil (pH 7.4). The wood modifications used were furfurylation (Visorwood), acetylation and heat treatment (Thermowood). Other materials tested were linseed oil impregnated pine, reference preservative (CC and CCA) treated pine and Robinia psuedoaccacia heartwood.A dynamic MOE (MOEdyn) test device based on measurement of ultrasonic pulse propagation was used for non-destructive decay strength evaluation during the incubation period. The MOE values were correlated to measured decay mass loss of the test specimens after different periods of exposure to the soils. Type of fungal attack was also evaluated using light microscopy.Results from preliminary studies indicate that ultrasound seems to be an excellent tool for evaluation of early brown rot decay. It also seems to be feasible for detecting white rot. However it does not seem to be very accurate in evaluating early stages of soft rot decay.
Abstract
Wood samples treated with ammonium copper quat (ACQ 1900 and ACQ 2200), chromated copper arsenate (CCA), Tanalith E 3491 and Wolmanit CX-8 have been studied in accelerated weathering experiments. The weathering experiment was performed by cycles of 2 h UV-light irradiation followed by water spray for 18 min. The changes on the surface of the weathered samples were characterized by roughness and color measurements on the samples with 0, 200, 400 and 600 h of total weathering.The objective of this study was to investigate the changes created by weathering on impregnated wood with several different wood preservatives. This study was performed on the accelerated weathering test cycle, using UVirradiation and water spray in order to simulate natural weathering. Surface roughness and color measurement was used to investigate the changes after several intervals (0200400600 h) in artificial weathering of treated and untreated wood.
Abstract
No abstract has been registered
Authors
Dagang Tang Thorjørn Larssen Min Shao Xiaoshan Zhang Lei Duan Wang Yanhui Shang He Zhao Dawei Renjun Xiang Jinsong Xiao Jiahai Luo Wenche Aas Rolf David Vogt Hans Martin Seip Espen Lydersen Odd Eilertsen Haijing Liu Jixi Gao Tonje Økland Svein Solberg Valter Angell Jan MulderAbstract
No abstract has been registered