Your search resulted in 1797 documents. Displaying 25 entries per page.
Isolation of the microbiota from wood decay insects and some of their enzymatic activities
2023 - IRG/WP 23-11014
Wood decay organisms have the ability to degrade wood components (cellulose, hemicellulose and lignin) by enzymatic capacities, but these enzymes can belong to the proper organism, or to the associated microbiota. The identification of the microorganisms, as well…
M T Troya, F Llinares, J Arranz, S Izpura-Luis, S M Santos, L Robertson
Morphological observation of wood at the early stages of decay in brown rot and white rot
2023 - IRG/WP 23-11020
…white-rot, brown-rot and soft-rot fungi based on their decay modes. Since white-rot and brown-rot fungi are known to reduce wood strength significantly, it is important to clarify the mechanisms of their wood degradation. White-rot fungi reduce wood strength as the decay progress and decompose all main component…
R Tsukida, T Hatano, Y Kojima, Y Horikawa, S Nakaba, R Funada, M Yoshida
Simulations of microclimates for wood-decaying fungi in the built environment using environmental analysis
2023 - IRG/WP 23-20703
Simulations of fungal decay risk were run on two similar building geometries exposed to typical annual climate conditions of two different geographical locations, Brunswick (Germany) and Cairns (Australia). The simulations were conducted to capture the effect of wind-driven rain…
P B van Niekerk, J Niklewski, S H Hosseini, B N Marais, I Frimannslund, T Kringlebotn Thiis, C Brischke
Above Ground Proximity Decay Field Trial of Modified ACQ-A, Wolman® CA-B and Wolman® CA-C in Taiwan
2023 - IRG/WP 23-30793
An above ground proximity decay field trial was established at Chiayi county, Taiwan in July 2016. The purpose of this study was to generate local field performance data for Taiwan for Slash Pine treated with Wolman® CA-B, Wolman® CA-C and a modified ACQ-A product at AWPA UC3B…
J-Y Gan
Estimation of single shear strength performance of screw joints with decayed wood
2023 - IRG/WP 23-40968
…the single shear strength performance of screw joints with decay. Therefore, we proposed the model considering the yield strength due to difference of the decay depth. On this model, the sound layer and three different decayed layers (multi-layer) were separated according to the damage degree. The estimated values by…
R Inoue, K Tanaka, T Mori
Characterisation of fungal decay in cable car trestles in Svalbard
2023 - IRG/WP 23-11031
…hereby present preliminary results characterising fungal decay from six of the cable car trestles from Longyearbyen, Svalbard. As expected, we found that that age alone was a poor indicator of decay risk and that more severe decay was found in soil contact than above ground. A total of 170 fungal species were…
G Alfredsen, L Ross, M Altgen, I A Yakovlev, A-C Flyen, M S Austigard, J Mattsson, N B Pedersen
Decay capacity and degradation patterns of Xylaria hypoxylon on different wood species
2022 - IRG/WP 22-10985
…of physical and environmental factors may influence fungal decay including the wood substrate, temperature, moisture, oxygen, light, pH, and nitrogen. Understanding the effects of these factors on fungal decay is important for the effective utilization of wood decay fungi in biotechnological processes and for…
E Bari, G Daniel, A Singh, J J Morrell
Introduction to the project ‘Deterioration and decay of wooden cultural heritage in Arctic and Alpine environments’ (ArcticAlpineDecay)
2022 - IRG/WP 22-10997
…background and an introduction to the project ArcticAlpineDecay. The project ArcticAlpineDecay will use state-of-the-art methods within different areas of expertise, and the novelty of the newly started project is the expected synergy of combining information from different methodologies. We also expect synergy with…
G Alfredsen, L Ross, A W Hegnes, M S Austigard, J Mattsson, N B Pedersen, A Sinitsyn, V V Martens, A-C Flyen
Evaluation of Decay Resistance of Copper-based Preservatives Treated-Wood exposed to different field test sites in Korea
2022 - IRG/WP 22-20679
…the treated wood must have efficacy against wood decay fungi or termite. In order to obtain information regarding the life span of the treated wood (ie, how long does the treated wood can be used safely), resistance on decay and termite attack was evaluated by the indoor and outdoor field tests. In this…
W-J Hwang, S-M Yoon, Y Park, Y-S Choi, H-M Lee, J-W Kim
Studies into the effect of soil type and soil layer on the in-ground decay of European beech
2022 - IRG/WP 22-20681
…identify the effect of each respective soil layer on wood decay. Wood specimens (5 x 10 x 100 mm³) were measured for oven-dry mass loss (MLwood) after 16 weeks of exposure, and compared to MLwood predicted using a dose-response laboratory in-ground decay model developed by Marais et al. (2021) for European beech.…
B N Marais, S Kovacs, M Jansen, C Brischke
Combining MRI and X-ray CT to monitor fungal decay of plywood and OSB in a lab test
2022 - IRG/WP 22-20683
…wood-engineered products, are susceptible to degradation by decay fungi. In-depth knowledge on the intricate material-fungus relationship as well as performance data for many bio-based building materials are still lacking, and especially knowledge on how a material’s structure and moisture properties affect the…
L De Ligne, T Núñez Guitar, C Vanhove, J Van Acker, J Van den Bulcke
Using satellite-retrieved soil moisture data to model the decay risk of in-ground timber
2022 - IRG/WP 22-20689
…The data was then used as input to a dose-response wood decay model based on terrestrial microcosm (TMC) tests. The resulting hazard map plotted dose as an indicator of in-ground wood decay based on differences in annual temperature and soil moisture characteristics. Unlike aboveground hazard maps, the dose…
P B van Niekerk, M Schönauer, B N Marais, C Brischke
Durability against fungal decay of sorbitol and citric acid (SorCA) modified wood
2022 - IRG/WP 22-40928
…investigated the resistance of SorCA treated wood against decay fungi by performing a full EN 113-2 (2021) procedure yet, i.e. following the standard incubation time and sample size.
Therefore, a series of Scots pine sapwood (Pinus sylvestris L.) specimens was treated with aqueous solutions of SorCA at different…
K Kurkowiak, L Emmerich, H Militz
Environmentally Friendly Wood Modification based on Tannin-Furfuryl alcohol - Effect on stabilisation, mechanical properties and decay durability
2022 - IRG/WP 22-40929
…of treatment to leaching, mechanical properties, decay durability against white-rot (Coriolus versicolor, Pycnoporus sanguineus) and brown-rot (Coniophora puteana) as well as their chemical and anatomical characteristics were evaluated. Results revealed that the partial substitution of FA by the tannins…
M Mubarok, E Azadeh, F O Akong, S Dumarçay, A Pizzi, C Charbonnier-Gérardin, P Gérardin
Effect of densification of Eucalyptus nitens and E. obliqua on moisture uptake, swelling, decay resistance, and fire performance
2022 - IRG/WP 22-40946
…ostreiformis and P. coccineus) were used to analyse the decay resistance of the densified material, while cone calorimeter tests were used to indicate heat release rates. Thermo-mechanical densification has many positive attributes for improving hardness and modifying colour but did not improve decay resistance or…
B Hassan, J J Morrell, F Wiesner, W Wu, B Belleville, K C Wood
Durability of thermotreated Pinus sylvestris and Eucalyptus nitens against wood decay organisms
2022 - IRG/WP 22-40949
…increases the durability of wood against attack by wood decay organisms. The durability of Pinus sylvestris and Eucalyptus nitens thermotreated at 180 and 212 ºC, was studied. The results show that thermotreatment against wood decay fungi in P. sylvestris is slightly more effective than in E. nitens, especially…
M T Troya, S M Santos, L Robertson, N Pérez-Molina, V Baños, A Dieste
Durability of thermally modified western hemlock lumber against wood decay fungi
2022 - IRG/WP 22-40954
…modification of western hemlock lumber durability against decay fungi for a single treatment process. Western hemlock lumber was thermally modified using a cycle with temperatures ranging from 80-170ºC and was cut into standard 19 mm blocks for testing according to AWPA method E10. Performance of thermally modified…
G Presley, J Cappellazzi, I Eastin
Evaluation of Decay Resistance for the Larch Wood Heat-treated with Superheated Steam
2022 - IRG/WP 22-40956
…at high temperature and high pressure. In this study, decay resistance of larch wood which has been heat-treated with superheated steam was evaluated on the two methods. One was the laboratory test of natural decay resistance against wood rot fungi, and the other was the field decay test against wood rot fungi…
Y Park, S-M Yoon, H Kim, W-J Hwang
Assessing the risk of marine borer attack of the timber trestles and decay of timber above the intertidal zone of the Barmouth Viaduct
2021 - IRG/WP 21-10974
…the structure is permanently at risk of attack by wood decaying fungi. The structure is undergoing a £20 million refit with much of the work focussing on the renewal of timber that has been attacked by biological agents. The combination of an ageing infrastructure and stressed maintenance budgets provides the…
J R Williams
Evaluation of decay and energy properties from thermally modified biomasses during fungal deterioration by NIR-spectrometry
2021 - IRG/WP 21-40922
…to (iii) predict the HHV of the samples according to their decay exposure types and duration. Partial least squares regression (PLSR) or discrimination analysis (PLS-DA) models were built to perform these predictions from NIR spectra.
PLS-DA models classify successfully the four different residual biomasses in raw…
B de Freitas Homem de Faria, P Santana Barbosa, J Valente Roque, A de Cassia Oliveira Carneiro, P Rousset, K Candelier, R F Teofilo
Different levels of acetylation lead to groupwise upregulation of non-enzymatic wood degradation genes of Rhodonia placenta during initial brown-rot decay
2020 - IRG/WP 20-10958
…not all genes thought to be involved in initial brown-rot decay showed an upregulation.
M Kölle, R Ringman, A Pilgård
FTIR analysis of wood blocks decayed by brown-rot fungi
2020 - IRG/WP 20-10959
…of the relative lignin contents in Cryptomeria japonica decayed by brown-rot fungi were developed with Infrared Spectroscopy and Klason technique. First, wood decay test was conducted using brown-rot fungi (Fomitopsis palusris, F. pinicola, Wolfiporia cocos, Gloeophyllum trabeum, and Neolentinus suffrutescens) and…
R Kondo, Y Horikawa, R Kose, M Yoshida
Observed and projected changes in the climate based decay hazard of timber in the United Kingdom
2020 - IRG/WP 20-20665
…pathway (RCP) scenarios to project future climate decay indices for the United Kingdom until the end of the 21st century. The projections show a significant increase in the climate decay index even in the lowest RCP scenario, with all regions of the UK moving to index values indicating a very high hazard…
S F Curling, G A Ormondroyd
Limiting Polysaccharide Motion Protects Wood From Decay
2020 - IRG/WP 20-40890
It is well known that chemical modifications to improve decay resistance also reduce the equilibrium moisture content (EMC) of wood. The mechanism of this action, however, has been the subject of much debate. Several groups have suggested that decay resistance is a result of lower diffusion rates of fungal…
C G Hunt, S L Zelinka, J E Jakes
Modelling decay rates of timber exposed above ground on four different continents
2020 - IRG/WP 20-20670
…United States. Boards were assessed periodically detect decay, which was rated using a common assessment scale.
Preliminary exploration of relationships between decay assessment scores and decay indices – the Scheffer Climate Index and a dose-response model based solely on macroclimate variables – is…
L P Francis, J J Morrell, C Brischke, P B Van Niekerk, J Norton