Your search resulted in 643 documents. Displaying 25 entries per page.
Copolymers of tannin extracts as wood protection agents
2017 - IRG/WP 17-30709
Wouldn´t be a dream to preserve wood with the substances which the nature already synthesizes for protecting itself? The idea we would like to pursue is simple: Increase the concentration of these substances, the tannins, trying to fix them properly in wood. It appears easy but it is not. Sensibility against leaching, fungal decay and weathering were observed. In this paper new flavonoid co-polym...
G Tondi, L Sommerauer, A Oberle, A Petutschnigg, M-F Thevenon
Analysis of Wood Industrial Pollutants Based on Emission Coefficients
2017 - IRG/WP 17-50325
Accurate calculation and estimation pollutants is one of the basic tasks of environmental protection .The low carbon economy put forward However，low carbon economy data of wood industry is lack. The paper research on emissions and pollution of Chinese wood industry. The results showed dust emissions from much to least is: fiberboard, plywood and particle board; the amount of industrial ...
Chu Jie, Ma Ji, Zhangjing Chen
NGS analysis of fungal OTUs in Aquilaria sp. from French Guyana, Cambodia, Laos and Thailand
2017 - IRG/WP 17-50328
Aquilaria is a tree species belonging to the Thymeleaceae family. When Aquilaria sp. is injured, it produce agarwood. Agarwood is characterized by a darker wood colour than the healthy one and by a strong perfume that is much esteemed by perfumers and some oriental religious communities. The production of agarwood is presumed to depend of environmental factors, among them fungi. The aim of this wo...
C Zaremski, C Malandain, O Sibourg, C Andary, G Michaloud, M Ducousso, N Amusant, A Zaremski
Exploration of waterlogged piles and wooden constructions of Riga Dome Cathedral
2017 - IRG/WP 17-10901
The Riga Dome Cathedral’s waterlogged wood piles and the roofs and tower's wooden structures were investigated, the extent of biological damage was evaluated, and the wood rot fungi and insects were identified. The pile wood’s component composition and elemental composition were analysed; the wood structure damage by erosion bacteria was microscopically determined. In the roofs and tower ...
B Andersons, I Andersone, I Irbe, V Fridrihsone, R Lūsis
Multivariate modeling of mould growth in relation to extractives in dried Scots pine sapwood
2017 - IRG/WP 17-20629
Influence of extractives on mould growth on Scots pine sapwood dried in air or in kiln was studied. Boards were sprayed with water mixtures of spores of the fungal species Penicillium sp., Aspergillus sp., Mucor sp., Paecilomyces sp., Trichoderma sp., treated at a temperature of 22ºC at 90% RH, classified into a percentage of covered area. Acetone and water extracts were isolated and analyzed for...
O Karlsson, O Myronycheva, M Sehlstedt-Persson, M Öhman, D Sandberg
Water absorption characteristics of CLT
2017 - IRG/WP 17-40817
CLT is initialism of Cross Laminated Timber. CLT is generally large-sized panel which can use many woods efficiently, so it is attracted attention recently in Japan. Therefore, many studies about CLT are carried out. However, there are few studies about durability of CLT. Avoiding water infiltration is important for durability of wooden building. CLT has many edge-glued points which has risk of w...
D Yokoi, H Ishiyama, Y Hirano
Influence of sea water on timber and metal joints
2017 - IRG/WP 17-40818
In the Great East Japan Earthquake that occurred in March 2011, many buildings suffered from seawater immersion caused by the tsunami. Saito's study revealed that corrosion progresses on metal plate that experienced seawater immersion 1). However, the detailed mechanism of corrosion progresses has not yet been clarified. Therefore, in this study, salinity which is one of causes of corrosion w...
T Nishimura, H Ishiyama, F Hirose, N Wada
Assessing the nutrient value of bio-based materials in relation to early fungal growth
2017 - IRG/WP 17-20631
Bio-based materials are gaining importance in the building industry, as the focus on sustainability and life-cycle-assessment has increased dramatically over the last decade. Wood and wood-engineered products as well as insulation materials made from flax, hemp, etc. are hence increasingly used. These materials originate from renewable resources and are often biodegradable, which can cause problem...
L De Ligne, J Van den Bulcke, J Baetens, B De Baets, J Van Acker
The Impact of Cryopreservation Techniques and of Water Quality on the Wood Degrading Ability of Fungal Strains: Recommendations for Maintenance and Culturing Procedures
2018 - IRG/WP 18-20636
In order to establish an optimal cryopreservation method, strains of Basidiomycete and Ascomycete fungi, which are among the most frequently used for wood durability testing, were evaluated using three cryopreservation procedures at -80°C. The main objective was to prevent decrease of the fungal virulence that may occur due to repeated routine sub-culturing procedures and to optimize the reactiva...
A Stum, M Montibus, I le Bayon, M Kutnik
Material Resistance and Chemical Composition of Italian Stone Pine (Pinus pinea)
2018 - RG/WP 18-20645
Relevant properties of stone pine (Pinus pinea) wood have been only fragmentarily addressed in the past, which has been recognized as a limiting factor for its potential applications. The amount of the respective wood species on the market will likely increase in the future. The sorption properties, permeability to water, extractives content and durability against fungi of Pinus pinea sapwood and ...
M Humar, M De Angelis, M Romagnoli, V Vek, I Poljanšek, P Oven, N Thaler, B Lesar, D Kržišnik
Performance of acetylated wood in aquatic applications
2018 - IRG/WP 18-40822
Acetylation of wood to enhance its resistance against wood decaying fungi and insects has been studied extensively under both laboratory and terrestrial field trials. Also several studies are investigating the performance of acetylated wood in marine and fresh water exposures. This paper updates nine year marine tests with acetylated radiata pine in Hejlsminde (Denmark) and presents data on 3 year...
F Bongers, S Palanti, A Gellerich, J J Morrell, J Creemers, J Hague
Multiscale modification on water resistance and dimensional stability of Populus cathayana by alkali lignin combined with heat treatment
2018 - IRG/WP 18-40826
The aim of this study was to enhance the water resistance and dimensional stability of fast growing wood by alkali lignin combined with heat treatment. Poplar (Populus cathayana) samples were first impregnated with alkali lignin solution and then subjected to heat treatment at 140, 160, and 180°C respectively for 2h. Properties of leachability, moisture adsorption and water absorption, contact an...
H Zhou, J Li, E Ma
An examination of the potential for the use of the Maillard reaction to modify wood
2018 - IRG/WP 18-40829
Finding efficient ways to decrease wood decay caused by fungi and increasing its dimensional stability is an important issue in the timber construction. A possible way to avoid wood decay by fungi is by reducing the water content of wood, since water is a primary condition for fungal growth. Bulking of the wood cell wall by chemical reagents occupies the space where water normally occurs. At the s...
K Peeters, E Larnøy, A Kutnar, Č Tavzes, C A S Hill
A Conceptual Review of Young People’s Perceptions about Wood
2018 - IRG/WP 18-40836
This article was adapted from the previous study “Young People’s Perceptions about Wood” prepared by Usta (2017), and extended through the development and evaluation of the initial data in terms of the conceptual framework regarding the descriptions of wood by young people. Because it was highlighted by previous study that the university students as the full members of society have the aware...
I Usta
A Synergistically Stabilized Oil-in-Water Paraffin Pickering Emulsion Used in Wood Treatment
2018 - IRG/WP 18-40840
Pickering emulsions (emulsions stabilized by solid particles) are attractive as they have strong similarities with traditional surfactant-stabilized emulsions. In this study, an oil-in-water (O/W) paraffin Pickering emulsion system with satisfying stability and small droplet size distribution was developed by hydrophilic silica particles and traditional surfactants as mixed emulsifiers. The drople...
J Jiang, J Cao
Difference of wood decay manner between brown-rot species
2019 - IRG/WP 19-10938
Wood blocks (Cryptomeria japonica) which were decayed by a Polyporales white-rot fungus (Trametes versicolor) and brown-rot fungi (Fomitopsis palustris, F. pinicola, and Wolfiporia cocos), respectively, were analyzed by X-ray diffraction and infrared spectroscopic methods followed by multivariate analysis. In the analyses, the differences in the cellulose crystallinities and infrared spectral patt...
R Kondo, Yo Horikawa, S Nakaba, K Ando, M Yoshida
Decay and water resistance of Siberian and European larch wood
2019 - IRG/WP 19-10941
The occurrence of larch wood is rather frequent in civil engineering. Namely, in building façades, terraces and balcony fences. In Slovenia and other central European countries, the use of the Siberian larch is especially popular. In this research, the durability against decay fungi in laboratory conditions and water exclusion ability of plantation-grown and naturally grown Siberian larch (Larix ...
B Lesar, D Krzisnik, M Humar
Quantifying the effect of microclimatic parameters on the moisture-induced decay risk of wooden structures
2019 - IRG/WP 19-20649
Wood exposed outdoors is prone to fungal degradation. Besides its material-inherent resistance, numerous factors are impacting on its service life with both, climate and design having a major effect. In addition, topography, shading, wind barriers, and other local parameters have an effect on the microclimatic conditions at site and therefore need to be quantified for service life prediction of wo...
L Emmerich, C Brischke
Performance of modified wood in service - multi-sensor data fusion and its multi-way analysis
2019 - IRG/WP 19-20660
Recent developments in the field of electronic sensors and analytics provide new opportunity for accurate characterization of materials often based on portable and non-destructive methods. By using several complementary techniques, the material description is precise and complete. The data provided by multiple equipment, however, are often not directly comparable due to different resolution, sensi...
A Sandak, J Sandak, M Cocchi
Impact of water holding capacity and moisture content of soil substrates on the moisture content of wood in terrestrial microcosms
2019 - IRG/WP 19-20662
Terrestrial microcosms (TMC) are frequently used for testing the durability of wood and wood-based materials as well as the protective effectiveness of wood preservatives. In contrary to experiments in soil ecology sciences, the experimental set-up is usually rather simple. However, for service life prediction of wood exposed in ground, it is of immanent interest to better understand the different...
C Brischke, F L Wegener
Relative efficacy of various oxine copper formulations against brown-rot fungi
2019 - IRG/WP 19-30741
This paper investigates the relative resistance of three different oxine copper formulations (oil-borne, water-borne, water-borne with pH-adjustment) as a preservative treatment for wood against brown-rot fungi. Impregnated southern pine sapwood cubes were exposed to R. placenta and G. trabeum cultures in a soil-block test. After eight weeks, the weight losses of the cubes were examined in relatio...
M Petruch, J Lloyd, A Taylor
Antifouling wood matrix with natural water transfer and micro reaction channels for water treatment
2019 - IRG/WP 19-40853
Wood with abundant nutrition transport channels could be considered as a kind of natural water purifier due to quick and effective passages for separation. Nevertheless, microporosity as main porous structure of initial wood are not enough to effectively separate small molecular, such as organic dye pollutants. Meanwhile, like most filters the fouling resulting in blocking and poor water flux will...
G Liu, D Xu, S Chang, J Hu, Xianjun Li5, Y Liu
Chemical Analysis of Southern Pine Pole Stubs Sixty Months Following Treatment with a Methylisothiocyanate-Based Solid Fumigant Stick
2019 - IRG/WP 19-30740
Methylisothiocyanate-based fumigants have been commercially used in the United States for over 35 years to control internal decay in utility poles and other wooden structures with little technological advancement. The most recently commercialized methylisothiocyanate-based fumigant is chemically known as dazomet. Dazomet is a free-flowing powder or granule that decomposes in the presence of mois...
D J Herdman, T Pope, R R Browning
Effect of pretreatment of wood surfaces with a copper monoethanolamine solution on the natural weathering performance of semitransparent stains
2019 - IRG/WP 19-40881
Semitransparent stains for wood products are favored for outdoor applications in Japan because these finishes do not hide the wood grain. However, the photoprotective effects of wood surfaces are low, therefor there is a need to improve the weathering performance. We examined the natural weathering performance of semitransparent stains on wood pretreated with a copper monoethanolamine solution (Cu...
S Isaji, H Shibui, Y Hirabayashi
Wood veneer with high flexible decorated with nanoparticles for highly efficient water treatment
2019 - IRG/WP 19-50347
Natural wood is mainly comprised of numerous long, partially aligned channels (lumens) as well as nanochannels. Wood with these quick and effective passages is suitable for a membrane/separation material. However, a suitable thickness range of wood along its growth direction is essential to effectively separate small molecular, and the wood membrane is too thick to clean easily. In this paper, woo...
S Chang, D Xu, G Liu, J Hu, X Li, Y Liu