Your search resulted in 88 documents. Displaying 25 entries per page.
Antifungal activity of different molecular weights of a biopolymer chitosan against wood decay fungi
2008 - IRG/WP 08-30456
…for high molecular weight (HMW). In vitro antifungal assay was carried out using of a mycelial radial growth inhibition technique. The results showed that the antifungal activity was increased with a decreasing of the molecular weight and a LMW chitosan was exhibited a high antifungal potency against Coriolus…
A S O Mohareb, M E I Badawy
Ecotoxicity of furfurylated wood – Effect of leachate on aquatic bacteria
2008 - IRG/WP 08-50250
…on these new methods. In the presented study the Microtox assay with the marine bacterium Vibrio fischeri are used as a screening method. Vibrio fischeri were exposed to water leachates from furfurylated wood using two different leaching procedures. The results from the OECD 2 standard test show that Kebony 2 (one…
A Pilgård, M Westin
A method and apparatus for rapid assessment of termite barriers.
2007 - IRG/WP 07-20366
This paper describes an apparatus for rapid assessment of barriers to subterranean termite foraging. The method and apparatus arose from the development of a novel physical termite barrier. The barrier had to be flexible, resilient, able to be applied as a liq…
D McG Ewart
Quantitative Determination of Cyproconazole in Wood treated with Tanalith CY
2007 - IRG/WP 07-20369
…of cyproconazole in preservative solutions. However, HPLC assay has not been successfully employed to determine cyproconazole content in treated wood. Some extractives from treated wood hinder cyproconazole determination because they have a similar retention time to that of cyproconazole on an HPLC chromatogram.…
I Momohara, T Miyauchi, M Mori
Determination of the lethal dose of fipronil for workers of Coptotermes formosanus (Isoptera: Rhinotermitidae
2007 - IRG/WP 07-10616
…on the change in termite mortality with time, and this assay was conducted again. LT100s/LT50s were 81/69, 37/23, 26/8, 8/5 h for 0.1, 0.5, 1.0 and 5.0 ng/worker, respectively in the first bioassay. In the second bioassay, those were 80/62, 35/25, 27/10 and 10/6 h. The results clearly supported the dose…
K Tsunoda, R Yamaoka
Chelator-Mediated Fenton Chemistry in Wood Degraded by Fungi
2007 - IRG/WP 07-10618
…their iron-reducing capabilities using a ferrozine-based assay. Extracts from wood colonized by brown rot fungi showed a significantly greater iron-reducing capability than extracts from wood colonized by white rot fungi or non-decay fungi. The ability of brown rot fungi to produce compounds, and/or modify the wood…
B Goodell, G Daniel, J Jellison, Yuhui Qian
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 specie…
Ruo-Yun Yeh, Yuan-Min Shen , Shang-Tzen Chang
Laboratory and field evaluation of Plasmite Reticulation System using bifenthrin as a chemical barrier within wall cavities against subterranean termites.
2005 - IRG/WP 05-20307
Laboratory and field bioassays undertaken to demonstrate Plasmite Reticulation system effectively delivers the termiticide (bifenthrin) within a simulated wall cavity at the required concentration. The chemical assay indicated that the amount of bifenthrin sampled at 5, 10, 15, 20,…
J R J French, B M Ahmed, J Thorpe, A Anderson
Evaluating the natural durability of a number of lesser known species of Ghanaian hardwoods using a short term laboratory assay
2004 - IRG/WP 04-10540
Resistance of a number of Ghanaian hardwoods to attack by the crustacean Limnoria quadripunctata was assessed by measuring the production of faecal pellets under forced feeding conditions over a two week period. Small sticks of commercially available, lesser k…
J R Williams, S M Cragg, L M S Borges, B Shayler
Chemical Analysis of Southern Pine Pole Stubs Thirty-Nine Months Following Treatment with Three Methylisothiocyanate-Based Fumigants
2004 - IRG/WP 04-30349
…conducted 39 months following fumigant treatment, chemical assay borings were removed at various pole heights and depths and analyzed for concentrations of MITC using GCMS. The 39 month results showed that MITC concentrations were greatest at all pole heights and core depths in the pole stubs treated with the 97%…
R J Ziobro, J Fomenko, D J Herdman, J Guzzetta, T Pope
Screening of the efficacy of tall oils against wood decaying fungi
2004 - IRG/WP 04-30354
…wood decaying fungi. Testing was performed as filter paper assay and mini-block assay. In the filter paper assay growth rates of the white rot fungus Coriolus versicolor and the brown rot fungus Poria placenta were inhibited by the tall oils. None of the oils caused total inhibition of the fungi but there was a clear…
G Alfredsen, P O Flæte, A Temiz, M Eikenes, H Militz
Comparing the resistance of a number of lesser known species of tropical hardwoods to the marine borer Limnoria using a short term laboratory assay
2003 - IRG/WP 03-10500
Naturally durable species of timber are used as an alternative to preservative treated timber for marine structures, but many species have not been evaluated for their potential for use in this environment. EN 275 specifies a 5-year test period - too long a pe…
L M S Borges, S M Cragg, J R Williams
Effect of fungal degradation on the chemical composition of acetylated beech wood
2003 - IRG/WP 03-40267
…solid-state fermentation conditions. Laboratory soil-bed assays were also conducted to study the degradation of acetylated wood by soft rot fungi and other soil-inhabiting microorganisms. Changes in the chemical composition of untreated wood and acetylated wood following exposure to fungal attack were examined by…
H Militz, Dong-won Son, L Gómez-Hernández, R Sierra-Alvarez
A comparison of fatty acid and molecular profiles for identification of wood colonizing basidiomycota
2003 - IRG/WP 03-20278
…goal of this work is to develop a sensitive and reliable assay to survey the wood decay community and accurately detect important wood decay fungal species.
T C McElroy, L Prewitt, S V Diehl
The Role of Coformulants in Preventing Bacterial Biotransformation of IPBC
2002 - IRG/WP 02-10436
…medium to Aspergillus niger, as measured by an antibiotic assay disc assay, was not ameliorated above this concentration. Below 18 μM, the toxicity of the spent broth was significantly reduced, and the accumulation of iodide occurred rapidly.
Demonstrating the toxicity of BAC to bacteria, and its…
S R Cook, D J Dickinson
Differences in pH, electrical resistance, cation composition and NIR spectra of red spruce wood during early stages of brown rot degradation
2002 - IRG/WP 02-10449
…for 0, 1, 2 or 3 weeks using a modified soil block assay design. Average weight losses over time ranged from 0-8.9% during this time period. Detectable changes in pH, electrical resistance and cation compostion were observed in the wood as early as 1 week. The magnitude and temporal patterns of these changes…
J Jellison, S Kelley, B Goodell, D Hui, A Ostrofsky
The Bacterial Biotransformation of IPBC
2002 - IRG/WP 02-10437
…to zero for four target fungi as measured by an antibiotic assay disc bioassay. Furthermore, the toxicity of PBC to the fungi as bioassayed, was c. 1/1000 that of IPBC.
The widespread ability of common soil and wood bacteria to transform IPBC to less toxic products is an important contribution to an understanding…
S R Cook, J Sullivan, D J Dickinson
Chemical Analysis of Southern Pine Pole Stubs Thirteen Months Following Treatment with Three Methylisothiocyanate Based Commercial Fumigants
2002 - IRG/WP 02-30294
…conducted 13 months following fumigant treatment, chemical assay borings were removed at various pole heights and depths and analyzed for concentrations of MITC using GCMS. The 13 month results showed the concentrations of MITC were greatest at all pole heights and core depths in the pole stubs treated with the 97%…
R J Ziobro, T C Anderson, D J Herdman, J Guzzetta, T Pope
Colonisation and detection of New Zealand sapstain fungi
2000 - IRG/WP 00-10329
…of sapstain with mould species. Development of an antibody assay for Sphaeropsis sapinea and the major Ophiostomataceae strains could be used by industry and customers to differentiate between moulds and decay fungi and the presence or absence of sapstain even before staining hyphae are apparent. This presentation…
J M Thwaites, R L Farrell
In situ testing the influence of melamine resins on the enzymatic activity of basidiomycetes
1999 - IRG/WP 99-30194
…to the increased wood durability. An in situ photometric assay was used to measure the enzymatic activity against Walseth cellulose, pine sapwood as well as lignin and xylan preparations.
D Lukowsky, F Büschelberger, O Schmidt
An appraisal of methods for environmental testing of leachates from salt-treated wood; part 1
1998 - IRG/WP 98-50115
The magnitude and diversity of leaching tests with salt-treated wood, performed by institutes as well as industry, strongly appeal for harmonisation towards one single method. That procedure should be well-defined, cost- and time-effective and moreover be exte…
G M F Van Eetvelde, M Stevens, F Mahieu, H-W Wegen, A Platen
Non leachability of arsenic, copper and chromium from 15 years old CCA-C treated southern pine poles used in brackish water as jetty piles in Bangladesh
1998 - IRG/WP 98-50103
…poles (1.5y old) was w/w 4.17% (sd 0.0684) in 0-12.5mm assay zone compared to w/w 4.95% (sd 0. 1286) in under water location and w/w 4.73% (sd 0. 1137) in above water location of 15y old jetty piles. Such a preservative treated wood poles and piles are more safe in brackish water rather than other constructional…
A K Lahiry
Detection of wood decay fungi in wood using a PCR-based analysis
1998 - IRG/WP 98-10279
We have developed a DNA-based assay to reliably detect brown rot and white rot fungi in wood at different stages of decay. DNA, isolated by a series of CTAB and organic extractions, was amplified by the polymerase chain reaction using published universal primers and basidiomycete-specific…
C Jasalavich, A Ostrofsky, J Jellison
Improved preservative penetration of spruce after pre-treatment with selected fungi. I. Fungal pre-treatment of pole sections
1998 - IRG/WP 98-40117
…method, quantifying the fungal biomass in the wood. The assays indicated a rapid and even colonisation of the wood down to the heartwood within a period of approximately 1 week. Dichomilus squalens was also seen to colonise the heartwood. The microscopic and quantitative assays correlated well and reflected the…
B Rosner, K Messner, E J B Tucker, A Bruce
An alternative method for the determination of lignocellulolytic enzymatic activities of white rot fungi
1998 - IRG/WP 98-10261
…in culture media in the presence of dyes.
In this assay, ten dyes were selected, which were added in concentrations of 0.00 1% - 0.003% (P/V) to four-day cultures of Trametes versicolor containing 1% of beech sawdust in a basal salt medium. After the addition of the dye and at seven-day intervals, aliquots…
D Muñoz-Mingarro, F Llinares, F Rubio, M Yuste, C Rodríguez-Borrajo, J Jiménez, M T De Troya