Your search resulted in 269 documents. Displaying 25 entries per page.
Effects of biocides on the extracellular mucilaginous material (ECMM) produced by two wood rotting basidiomycetes
2003 - IRG/WP 03-10469
Growth and production of extracellular mucilaginous material (ECMM) by the brown-rot fungus Gloeophyllum trabeum (FPRL 108 N) and the white-rot fungus Coriolus versicolor (CTB 863 A) was assessed in liquid culture, supplemented with the biocides CuSO4 and cyproconazole.
The production of biomass in G. trabeum was significantly influenced by the concentration of CuSO4 in the medium. When CuSO4 was...
D Vesentini, D J Dickinson, R J Murphy
The efficacy of boron preparations
1987 - IRG/WP 3400
The toxicity threshold of boric acid for egg larvae of Hylotrupes bajulus Linné is approx. 0.4 kg/m³ of wood (71 g B/m³) over a 12-week test period, and approx. 0.3 kg/m³ of wood (53 g B/m³) over a 6-month test period. The corresponding values for borax are 0.5-0.6 kg/m³ of wood (56-68 g B/m³) and 0.3-0.4 kg/m³ of wood (34-45 g B/m³). The values are somewhat lower in the case of the egg l...
J T De Jonge
Fungal degradation of wood treated with metal-based preservatives. Part 1: Fungal tolerance
1996 - IRG/WP 96-10163
In recent years, concerns have arisen about the leaching of heavy metals from wood treated with chromated copper arsenate (CCA), particularly because of the large amount of CCA treated wood that will be discarded in the coming years. The long term objectives of this work are to determine the fate of copper, chromium and arsenic with the aging and potential decay of CCA-treated wood, and to develop...
B Illman, T L Highley
The resistance of wood coated with different water-borne paints against colonisation by decay fungi
1996 - IRG/WP 96-10165
The susceptibility of wood painted with model paints of known composition to decay fungi was tested without previous weathering. Included in the study were five alkyd emulsion paints and five acrylic paints; one linseed oil paint and two solvent-borne alkyd paints. It was found that several components influenced the susceptibility of these paints. The results of the present study indicate that the...
J Bjurman
The influence of wood density on the durabilities of three Ghanaian hardwoods (Nauclea diderrichii (de Wild.) Merr., Nesogordonia papaverifera (A. Chev.) R. Capuron and Corynanthe pachyceras Welw.) )
2007 - IRG/WP 07-10603
Review of factors that influence wood durability shows that although density varies depending on stem position, its role on decay resistance appears controversial. The role density plays in influencing the durability of three hardwoods from Ghana, namely Nauclea diderrichii (de Wild.) Merr., Nesogordonia papaverifera (A. Chev.) R. Capuron) and Corynanthe pachyceras Welw. is therefore investigated ...
C Antwi-Boasiako, A J Pitman, J R Barnett
Effect of Cinnamomum kanehirae Extractives on the Compositions of the Fermentation Broth of Antrodia cinnamomea
2007 - IRG/WP 07-10632
The fruiting body of Antrodia cinnamomea, called niu-chang-chih, is well known and highly prized in Taiwan as a folk medicine. This fungus is endemic to Taiwan and the growth of which is restricted to the inner heartwood cavities of another endemic tree species, Cinnamomum kanehirae. The fungal basidiomes have been used for treating food and drug poisoning, diarrhea, abdominal pain, hypertension, ...
Ruo-Yun Yeh, Yuan-Min Shen , Shang-Tzen Chang
Effect of fiber type and content on the natural durability of wood flour/high density polyethylene composites against rainbow fungus (Coriolus versicolor)
2007 - IRG/WP 07-40387
In order to evaluate the effect of fiber type and content on the natural durability of wood flour/high density polyethylene (HDPE) composites against Coriolus versicolor, samples containing 25% and 50% by weight of various natural fibers and HDPE were selected. Natural fibers included in the study were wood flour, rice hulls, hemp fibers and newsprint. Samples containing 25% and 50% natural fiber ...
A Karimi, M Tajvidi, S Pourabbasi
Effect of Compatibilizer on the Natural Durability of Wood Flour/High Density Polyethylene Composites Against Rainbow Fungus (Coriolus versicolor)
2007 - IRG/WP 07-40388
To evaluate the effect of compatibilizer on the natural durability of wood flour/high density polyethylene composites against Coriolus versicolor, composites containing 25% and 50% by weight maple wood flour and 1% and 2% compatibilizer (Maleic anhydride polyethylene (MAPE)), respectively, were sampled. Identical specimens of the same composites without the compatibilizer were also prepared. ...
Sara Pourabbasi, A Karimi, D Parsapajouh, M Tajvidi, M Soleymani
Wood decay fungi from New Zealand leaky buildings – PCR identification (Part 2) and aerial spore trapping
2008 - IRG/WP 08-10649
Prior to this study, it was not know which species of decay fungi caused decay in New Zealand leaky buildings. Use of molecular biology methodology, polymerase chain reaction (PCR), and subsequent DNA sequencing, as well as classical mycological techniques based on morphology, has enabled identification of decay fungi and has provided insight into their relative importance based on isolation frequ...
D Stahlhut, R L Farrell, R Wakeling, M Hedley
Decay resistance of propionylated Iranian beech against the white rot fungus Tramets versicolor
2008 - IRG/WP 08-30449
In this study, the decay resistance of propionylated beech was investigated against the white rot fungus Trametes versicolor. Iranian beech (Fagus orientalis) was modified with propionic anhydride at different temperatures, concentrations and times without using any catalyst. Different weight percentage gains (WPGs) were obtained under different conditions. The decay resistance of the esterifed wo...
M R M Farahani, S M Hosseini
Effect of juglone from Juglans mandshurica bark activity of wood decay fungi
2009 - IRG/WP 09-30502
Juglone was extracted from Juglans mandshurica bark via vacuum-assisted steam stripping. The extract was characterized by Fourier Transform Infrared Spectroscopy (FTIR), 1H Nuclear Magnetic Resonance (NMR) and Gas chromatography/mass spectrometry (GC-MS). The extraction process was easy to perform and produced excellent yields (0.22 g juglone/100 g of bark) of a high purity extract (96.42% juglone...
Dongmei Yang, Shuangyue Li, Shujun Li, Wenqiang Su, Yan Jin, Molong Sun
A genomic sequencing approach to study wood decay and copper tolerance in the brown rot fungus, Antrodia radiculosa
2010 - IRG/WP 10-10720
We used Illumina paired-end short read sequencing (76 nt, 300 bp insert size) to produce a de novo assembly of the genome of Antrodia radiculosa, a copper-tolerant brown rot fungus that is capable of aggressive wood decay. Quality analysis of the base calls in the dataset (8.95 Gb) showed that the majority of the nucleotide sequence was of the highest quality with 5% in the lowest quality group. ...
J D Tang, T Sonstegard, S Burgess, S V Diehl
Decay Resistance of Maple (Acer Insigne) Wood Against White Rot
2010 - IRG/WP 10-10740
In this study, the decay resistance of maple (Acer insigne) in natural state and treated with ACC (Acid copper chromate) was investigated against the white rot fungus (Coriolus versicolor). ACC is a kind of water borne preservatives that was used in this study for treating specimens under vacuum and pressure (Bethell procedure) with 3 percent concentration. In conducting mentioned evaluation, koll...
V Tazakor Rezaei
Durability of heat treated Malaysian bamboo Gigantochloa scortechinii strips
2010 - IRG/WP 10-40514
Bamboo is one of the fastest growing plants and can be used for various products. In tropical countries such as Malaysia bamboo is abundantly available at reasonable prices, therefore it is used for numerous purposes. However, bamboo (as a lignocellulosic material) is susceptible to fungal and insect attack and it is difficult to protect by preservative treatment. Heat treatment is an option to im...
N Kamarudin, K Sugiyanto
Gene expression analysis of a copper-tolerant brown rot fungus on MCQ-treated wood
2011 - IRG/WP 11-10748
Most brown rot fungi are copper-tolerant, which makes them difficult to control with copper-based wood preservatives like MCQ. To better understand what biological processes are regulated, we used our model species, Antrodia radiculosa, to examine expression of genes on MCQ-treated wood. Our hypothesis was genes that decreased copper bioavailability would be up-regulated early, when wood showed ...
J D Tang, A Perkins, S V Diehl
Effect of Nano-silver and Nano-copper and Nano-zinc oxide on Paulownia wood exposed to white-rot fungus
2013 - IRG/WP 13-30635
Paulownia is known as a fast growing tree and it can be used in several applications. The present study investigated the effect of Nano-silver and Nano-copper and Nano- zinc oxide on resistance of Paulowina (Paulownia fortunei) wood against the white rot fungus (Coriolus versicolor). Wood specimens with a dry density of 0.37g/cm3 were impregnated with a 400 ppm aqueous suspension of micronized na...
M Akhtari, M Ganjipour
Ammoniacal zinc borate as solid wood preservative
2014 - IRG/WP 14-30659
Zinc borate, well-known for its fungicidal, insecticidal and flame resistant properties, is widely used in manufacture of lignocellulose particle board. This form of borate is the least water soluble form available providing advantages as well as disadvantages for use as a wood preservative. This form does not leach from wood under conditions of high humidity, but it is also very difficult to appl...
C Ibáñez, C Mantero, A Ibarra, M Rabinovich
Use of x-ray microdensitometry for assessing the resistance to the fungus C puteana of a hybrid larches population
2018 - IRG/WP 18-10923
The aim of this research was to utilize the X-ray microdensitometry to determine the natural durability and its variability of a hybrid larch population. The method was applied on slices obtained by increment cores collected on standing trees before cutting them down. The methodology was discussed also in order to propose as a new screening method especially suited for trees populations. X-ray mic...
S Palanti, F Alderighi, F Stefani, J P Charpentier, L E Pâques
Effectiveness of Gleditsia triacanthos heartwood extractives as wood protector
2019 - IRG/WP 19-10950
In Uruguay, Gleditsia triacanthos (known as honey locust) is an exotic tree species categorized as invasive; it produces severe ecological impact as it displaces native species, causing changes in the structure of the native forest community. Being extremely difficult to control, it is widely distributed through Uruguay and neighbouring countries. However, one way to mitigate its negative impact i...
C M Ibanez, C Mantero, P Raimonda, X Pintos, E Pereira