Your search resulted in 938 documents. Displaying 25 entries per page.
Studying fungal growth using automated image analysis and computer simulations
2016 - IRG/WP 16-20590
Wooden materials are prone to fungal attack resulting in damage and economic losses. Therefore many efforts have been made to understand the degradation of wood and to avoid the adverse effect of fungi. Even though the extent of degradation of a material is inversely proportional to the…
G Vidal-Diez de Ulzurrun, J M Baetens, J Van den Bulcke, B De Baets
Effects of fungal exposure on air and liquid permeability of nanosilver- and nanozincoxide-impregnated Paulownia wood
2016 - IRG/WP 16-30680
…were observed in permeability in all treatments after the fungal exposure. The decrease was related to the growth and accumulation of hyphae along vessel lumens, blocking the path for fluid transfer. It was concluded that both heat-treatment at 150°C and the impregnation with zinc-oxide significantly inhibited…
H R Taghiyari, A Kalantari, M Ghorbani Kookandeh, F Bavaneghi, M Akhtari
Anti-Fungal Activity on Some Wood extracts as a Wood Protectant
2016 - IRG/WP 16-30684
…blended with potato-agar in order to investigate their antifungal properties. To determine the inhibition effectiveness of extractives, two different fungi; Coniophera puteana and Trametes versicolor were selected. Fungal activity was carefully observed for the duration of seven days. Following biological testing,…
Ö Özgenç, S Durmaz
Role of cell wall specific moisture content on the brown-rot fungal attack on wood
2016 - IRG/WP 16-40736
Wood is a hydroscopic resource because the cell wall polymers contain hydroxyl and other oxygen-containing groups that attract moisture through hydrogen bonding. Moisture content varies with changing moisture content in its environment. The moisture content…
R M Rowell
Fungal resistance and accelerated weathering of Wood-Plastic composites reinforced with Maritime pine wood flour
2016 - IRG/WP 16-40750
…composites was assessed by artificial weathering and fungal decay tests. Results showed that formulation with biocide exhibited low masse losses. Compared with the formulations without UV stabilizers, accelerated weathering resulted in discoloration (E) and slight reduction of the maximum…
M Jebrane, T Fournier, N-E El Bounia, F Charrier-El Bouhtoury
Accelerated weathering and fungal resistance of wood modified with isopropenyl acetate
2016 - IRG/WP 16-40764
…evaluate UV resistance. Anti-swelling efficiency (ASE) and fungal resistance of modified wood were also evaluated. Modified wood showed good ASE. Decay resistance of modified wood was evaluated by exposing unmodified and modified wood to a brown rot (P. meliae) and white rot (T. hirsuta) fungi. Results indicate that…
G B Nagarajappa, K K Pandey
Interpretation of moisture monitoring data - Relevance of moisture content thresholds for fungal decay
2015 - IRG/WP 15-10839
…the minimum MC threshold for the onset and development of fungal decay are needed. MC thresholds determined in two different studies have shown that different fungi were able to degrade wood clearly below fiber saturation. This data has been summarized in the present paper and applied to moisture monitoring data…
L Meyer, C Brischke
Antifungal properties of wood treated with IPBC and organosilicone compounds against Coniophora puteana
2015 - IRG/WP 15-30676
…and alkylsilane with amino groups) for supporting its antifungal properties. The mycological examination against Coniophora puteana was performed to determine the resistance of wood treated with the tested preservatives. The ergosterol identification in treated wood allowed to confirm the fungal activity of C.…
W Perdoch, B Mazela, A Waśkiewicz
Resistance of fungal derived pigments to ultraviolet light exposure
2014 - IRG/WP 14-30642
The potential for using fungal derived pigments as surface treatments for limiting photodegradation of wood was investigated. Extracts from Chlorociboria aeruginosa and Scytalidium cuboideum were compared with a traditional aniline dye and chromic acid treatment. Hybrid poplar…
H G Beck, S Freitas, G Weber, S C Robinson, J J Morrell
High-throughput sequencing highlighted contrasted pioneer fungal communities associated to coniferous and deciduous wood preservation assays
2013 - IRG/WP 13-10800
Studying the fungal communities in the wood, in particular during the first events of the colonization, and the factors that underlie the dynamics of fungal species assemblages remain a challenge in ecology, because of the absence of fructification during the pioneer…
Y Mathieu, A Dassé, I Le Bayon, M Kutnik, L Harvengt, E Gelhaye, M Buée
Development of a rapid method to assess the rate of fungal colonization of wood
2013 - IRG/WP 13-20531
…– that determines the heat production rate from the fungal metabolism as a measure of fungal activity – and can be used to study, for example, the kinetics of colonization of a wood substrate. In this paper the method is described and some first results are given. It is shown that the colonization of a small…
L Wadsö
Fungal laccases as a tool for wood functionalization
2013 - IRG/WP 13-20533
Wood degrading fungi are the most important production organisms for laccase, a promising oxidative biocatalyst with numerous biotechnological applications in the forest products industry. Laccases are multi-copper containing oxidases (EC 1.10.3.2), which cata…
M Schubert
Application of a model for the prediction of fungal degradation of thermally modified beech timber by Trametes versicolor
2013 - IRG/WP 13-40622
…Furthermore, linked to higher treatment intensities the fungal-related mass loss of TMT decreased. Fungal tests with Trametes versicolor indicated that the individual changes of the specimens need to be considered during the sorting of the durability classes. Therefore the development of the method of quality…
Clauder, L., Richter S., Unger, W., Pfriem, A
Influence of Heat Treatment Medium on Fungal Resistance of Beech Wood
2013 - IRG/WP 13-40643
…influence of heat treatment mediums on the behaviour of fungal resistance. White rot of wood digest lignin rather than cellulose; while brown rot digests the cellulose, but leave lignin behind. Results showed different behaviour of resistance against white and brown rot fungi. Heat treated specimens in acidic…
A Talaei, A Karimi, M-F Thévenon
Moisture and Fungal Durability of Wood-Plastic Composites Made With Chemically Modified and Treated Wood Flour
2013 - IRG/WP 13-40648
Evaluating the fungal durability of wood-plastic composites (WPCs) is complicated by the influence of slow moisture sorption. Recently, the American Wood Protection Association (AWPA) Standard Method E10, Testing Wood Preservatives by Laboratory Soil-Block Cultures, was…
B K Segerholm, R E Ibach
Connecting fungal genomic variations to wood chemical composition: A way to understand the adaptation of wood decaying fungi
2012 - IRG/WP 12-10776
The development of new sequencing methods allows now exploring the detoxication systems of wood-decaying fungi. These systems, called xenome, are mainly composed of oxidative enzymes (phase I) and of conjugation enzymes (phase II). These enzymes belong to supe…
E Gelhaye, Y Mathieu, E Meux, A Thuillier, M Mélanie
Determination of Izod Impact Strength on Wood: A Suitable Method to Detect Fungal Decay in Protective Effectiveness-Screenings of Wood Preservatives
2012 - IRG/WP 12-20484
…machine was examined. The results clearly show that the fungal attack of European beech by the white-rot fungus Trametes versicolor leads to a decrease of izod impact strength already after an incubation period of 4 weeks.
H Delenk, M Zauer, A Wagenführ
Evaluation of fungal infestation and decay in a simulated use class 3 situation (block test) after some years of exposure
2012 - IRG/WP 12-20487
…contact.
The present study describes the evaluation of fungal infestation and decay of untreated samples in different blocks depending on their exposure time, positioning within the block and wood species.
After 4 years outside exposure samples showed visible signs of decay. The highest rate of decay was…
A Gellerich, K Röhl, S Adamopoulos, H Militz
Effects of microclimate, wood temperature and surface colour on fungal disfigurement on wooden claddings
2012 - IRG/WP 12-20490
Wooden claddings are common in façades in Norway, and Norway spruce (Picea abies) is the most frequently used species. The cladding is a major part of the facade, and it has visual requirements that may define the aesthetic service life. The visual changes th…
L Ross Gobakken, G I Vestøl
Biodegration of treated wood waste by native fungal communities of tropical soil in French Guiana
2012 - IRG/WP 12-50285
…It is in this perspective that we are proposing to study fungal communities of these contaminated woods in a purpose of bioremediation. Most of precedent studies have focused on ability of some Basidiomycetes and white rot fungi to degrade these biocide products.
Treated and reference (non-treated) woods samples…
A Zaremski, L Gastonguay, C Zaremski, F Chaffannel, J Beauchêne, G LeFloch
Succession after Fire of Fungal Fruiting Bodies in Mediterranean Pinus pinaster Stands in Spain
2012 - IRG/WP 12-10789
…of a 4-year survey aimed at describing the succession of fungal communities following fire in a Mediterranean ecosystem in Northwest Spain, dominated by Pinus pinaster Ait. After a large wildfire in 2002, six 2 x 50 m study plots were established in burned and unburned areas corresponding to early and late…
P Vásquez Gassibe, M Hernández-Rodriguez, R Fraile Fabero, J A Oria-De-Rueda, P Martín-Pinto
Fungal biodegradation of CCA-treated wood wastes
2011 - IRG/WP 10-50276
Fungal biodegradation could be employed as a pretreatment method to alleviate problems caused by landfill disposal of CCA-treated wood wastes (e.g. a shortage of landfill space and a release of leacheate). It could be used to decrease the volume of waste and…
Gyu-Hyeok Kim, Yong-Seok Choi, Jae-Jin Kim
Measuring fungal cellulolytic enzyme activity in degrading wood
2011 - IRG/WP 11-10753
…the presence of wood protectants. At present, to measure fungal carbohydrate degrading enzyme activity in the presence of wood, two methods are used: either 1) the enzyme is measured in the growth media containing lignocellulosic material after the fungus has been allowed to utilize the cellulolytic substrate or 2)…
S M Duncan, J S Schilling
Growth conditions for fungal decay in wooden constructions – practical experience versus literature
2011 - IRG/WP 11-10758
…for decay to develop at all. In assessment of risk of fungal decay it is crucial to consider the ecology of the built environment, involving temperature and time as well as the wood moisture content. The history of the construction part in question is more important than a single measurement of moisture content.
M Sand Sivertsen, J Mattsson
The influence of moisture content and wood pH variation on fungal melanin formation in wood substrates
2011 - IRG/WP 11-10759
…their mycelium. This is often associated with slower fungal growth and delay of wood mass loss. Dark colored melanin is the most common pigment formed by wood decay fungi, and it is produced in consecutive granule depositions in the lumens of the wood cells to form distinctive zone lines. To investigate the…
D Tudor, S C Robinson, P A Cooper