Your search resulted in 1499 documents. Displaying 25 entries per page.
Laboratory and Field evaluation on Natural Resistance and Feeding Preference of Different Wood Species to Subterranean Termites (Isoptera: Rhinotermitidae, Termitidae) in Pakistan
2012 - IRG/WP 12-10769
…weight served as a measure of termite attack. Each wooden block was also graded by the amount of termite damage using American Wood Preservation Association (AWPA) scale 1997. Two weeks of no choice laboratory trials against H. indicola and C. heimi for all types of wooden blocks oven dried at 100°C) were used in…
S A Malik; F Manzoor, B M Ahmed (Shiday)
Use of X-Ray Micro-Computed Tomography to Visualize Copper in Preservative Treated Wood
2012 - IRG/WP 12-20488
This study tests the hypothesis that X-ray micro-computed tomography will be able to visualize the distribution of copper in wood treated with a micronized wood preservative containing copper carbonate. A small wood block measuring 12 x 12 x 19 mm was cut from a 2.4 m x…
P D Evans, A Limaye, H Averdunk, M Turner, T J Senden, M A Knackstedt
NHA Choice test: Feeding dilemma for Reticulitermes flavipes (Kollar)
2011 - IRG/WP 11-10746
…by N’N napthaloylhydroxylamine (NHA). Pine blocks were vacuum treated with aqueous concentrations of NHA ranging from 250-10,000ppm and exposed to one gram R. flavipes workers in the dual block choice test which included one treated and one untreated block per modified AWPA laboratory test (E1-97)…
F Green III, S N Kartal, P K Lebow, R A Arango
The potential for using CuO nanoparticles as a wood preservative
2011 - IRG/WP 11-30569
…protection was investigated using mini-agar slant and wood block tests with Gloeophyllum trabeum or Trametes versicolor. Nano-copper was more effective against G. trabeum than T. versicolor, although neither of these fungi would be considered copper tolerant. Nano-copper solutions were stable over a 17 week storage…
I S Weitz, K Knani, M Maoz, C Freitag, J J Morrell
Durability of modified wood in UC3 and UC4. Results from lab tests and 5 years testing in 3 fields
2011 - IRG/WP 11-40562
In 2005 an extensive test program including field tests was set up in order to obtain more data on the durability and long term performance of modified wood and semi-durable wood species. One of the main challenges for modified wood is to predict accurate service life time in UC3 (use class 3, above ground)…
M Westin, G Alfredsen
Biological performance of wood treated with tar-oil recovered during slow pyrolysis of macadamia nut shells
2010 - IRG/WP 10-30523
…to various brown and white rot fungi based on the soil-block test method specified by the American Wood Protection Association (AWPA) after leaching process. Treated specimens were also subjected to the subterranean termite attack according to Japanese Industrial Standards (JIS) for 3 weeks. In the study, growth…
S Nami Kartal, E Terzi, C Kose, J Hofmeyr, Y Imamura
Effects of Cunninghamia Lanceolata Heartwood Extracts on the Growth of Wood Decay Fungi
2010 - IRG/WP 10-30527
…which is a commercial antioxidant. In vitro bioactive tests showed that none of the three extracts were strongly inhibitory to cultures of Trametes versicolor, Gloeophyllum trabeum, Aspergillus niger or Paecillomyces variotii. These results suggest that the combination of extractive fractions rather than any…
Shujun Li, Jing Wang, Jian Li
Decay and termite resistance of particleboard and MDF panels made from pinecones
2010 - IRG/WP 10-40493
…from the panels were subjected to slightly modified soil-block tests according to AWPA E10-06 standard method by using two brown-rot fungi, Gloeophyllum trabeum and Postia placenta and two white rot fungi, Trametes versicolor and Pleurotus ostreatus for 12 weeks. Specimens were also subjected to the subterraneas…
C Köse, E Terzi, Ü Büyüksar, Erkan Avcı, Nadir Ayrılmış, S Nami Kartal, Y Imamura
Biological Performance of Boron-based Chemicals Treated Wood Composites
2009 - IRG/WP 09-40464
…and middle density fiberboard were produced. The decay tests of these wood composites were done according to the soil-block test. Among the boron compounds, zinc borate demonstrated better resistance against to C. puteana fungus than other boron compounds used in this study. According to the durability…
Ü C Yıldız, H Kalaycıoğlu, S Yıldız, A Temiz, E Tomak Dizman, A Çavdar Dönmez
Antifungal activity of essential oils against common wood degrading/decaying fungi
2008 - IRG/WP 08-30465
…eugenol was evaluated for decay resistance in an agar/wood block tests using both unleached and leached cycles with radiata pine sapwood blocks.
During the initial in-vitro screening trial, variability in the tolerance of the tested fungi towards the selected essential oil was apparent. Some of the essential…
T Singh, C Chittenden
Wood plastic composites from modified wood. Part 3. Durability of WPCs with bioderived matrix
2008 - IRG/WP 08-40423
…composites, WPCs, was tested in both laboratory and field tests. The laboratory tests were performed according to modified versions of AWPA E10 (soil-block test) and ENV 807 (tests in three un-sterile soils) and the field tests according to EN 252 (stakes in ground) and EN 275 (resistance to marine borers). The WPC…
M Westin, P Larsson Brelid, B K Segerholm, M Van den Oever
Effectiveness of MOQ® OX 50 (CCB-Oxide) wood preservative – Part 2: Field tests
2008 - IRG/WP 08-30483
…and CCA C-oxide preservatives carried out in field tests and compare their effectiveness. These results complement those of the soil-block and leaching tests presented at the 5th Wood Protection National Congress (Cidemco), held in San Sebastian, Spain, June 2008.
MOQ OX ® 50 es un borato de cobre…
A Gandolfi Jr, C Salvela, D R Macedo, J M Vidal
Biological efficacy of micronized copper systems
2008 - IRG/WP 08-30485
Soil block, fungal cellar and field stake test data will be presented for micronized copper systems. The copper portion of the formulations is present as a fine dispersion of "micro" particulates while the co-biocide is present as either a soluble quat or an…
C R McIntyre, M H Freeman
Biological Performance of micronized copper wood preservative formulations in field and laboratory tests
2008 - IRG/WP 08-30488
…were exposed to brown rot fungi in an 8-week AWPA E10 soil block decay test and two AWPA E7 ground-contact decay tests in Hawaii. The micronized copper formulations performed well against decay at or above the AWPA UC3 and UC4 retentions stipulated by the ICC-ES. Micronized copper preservatives performed comparably…
G M Larkin, J Zhang, D L Richter, R J Ziobro, P E Laks
Accelerated assessment tests of new termiticides
2007 - IRG/WP 07-20353
…on termites stipulate one colony of 250 insects per block test, for a duration period of 8 weeks.
Thus, for the study of new wood protectors, it should be interesting to have an accelerated method, in order to screen new products faster. The aim of this paper has been to elaborate a fast and reproducible…
M T Troya, M J Prieto, D Lorenzo, F Rubio
Effects of heat treatments on decay resistance and material properties of ponderosa pine and yellow poplar
2007 - IRG/WP 07-40374
…process at various treatment temperatures and times. Soil block tests using Gloeophyllum trabeum, Postia placenta, or Trametes versicolor showed that durability was enhanced, but the wood still experienced decay levels that would be unacceptable in window applications. Heat treatment also reduced hygroscopicity,…
C Vidrine, C Freitag, J Nicholson, J J Morrell
Chapter 13 - Slow fixation of CCA-treated bamboo
2007 - IRG/WP 07-10635-13
Chromated copper arsenate (CCA) leachability tests on full-cell
pressure impregnated (with 2-3% CCA solution) and slow dried (six
months air-drying under cover) bamboo block of three major
bamboo species of Bangladesh revealed initial insignificant leaching
of CCA within first week and no leaching…
A K Lahiry
Comparing microbial colonisation and Decay Rates of Wood from Sound and Aphid-Killed Kenyan-Grown Mexican Cypress (Cupressus lusitanica)
2006 - IRG/WP 06-10599
…was more pronounced than in riverwater. The soil block test recorded low weight losses after 2 weeks exposure, rising to between 29% and 36% after 12 weeks, with no significant differences between weight losses in samples from aphid-killed and sound trees, or tree age. The results of the study revealed…
R Venkatasamy
Laboratory methods for assessing the resistance of wood plastic composites to fungal attack.
2006 - IRG/WP 06-20340
Wood plastic composites (WPC’s) have many attractive material features including dimensional stability and resistance to moisture, but the wood in these materials remains susceptible to fungal attack. Assessing WPC decay resistance in laboratory trials has…
J J Morrell
Field Tests on Poles. A report from practice
2006 - IRG/WP 06-20343
…with 1,5mm diameter and the measuring computer/battery-block (“Resistograph”). The needle is drilled with constant speed into the wood and the power uptake of the drill is measured.
It showed excellent features for the investigation of poles or other wooden elements in service. But it is time consuming and…
A Peylo, C-G Bechgaard
Improvement of Grevillea robusta durability using heat treatment
2006 - IRG/WP 06-40333
…of heat treated samples was evaluated by malt agar block tests after three months of exposure to several wood rotting fungi. Results showed that the fungal durability was greatly improved after treatment. There was a good correlation between fungal resistance and mass loss which is a factor of time when the…
F Mburu, S Dumarçay, F Huber, M Petrissans, P Gérardin
Wood plastic composites from modified wood. Part 2 - Durability in laboratory decay tests
2006 - IRG/WP 06-40353
…tested according to modified versions of AWPA E10 (soil-block test) and ENV 807 (tests in three un-sterile soils, terrestrial microcosms, TMCs). The WPC materials were conically extruded profiles with 30% polypropylene content. The 70% wood content was untreated Scots pine sapwood, acetylated pine and heat treated…
M Westin, P Larsson Brelid, M L Edlund, G Alfredsen
Durability of Wood Plastic Composites Relative to Natural Weathering and Preservative Treatment With Zinc Borate
2005 - IRG/WP 05-40316
…in evaluating decay susceptibility in these laboratory tests. We examined moisture uptake in large sized (low surface to volume ratio) and smaller cut (high surface to volume ratio) WPC samples and found a much greater and rapid water uptake in the smaller samples. A soil block decay test with commercially…
M E Mankowski, F M Ascherl, M J Manning
Antifungal properties of new quaternary ammonium and imidazolium salts against wood decay, staining and mould fungi
2004 - IRG/WP 04-30347
…was determined employing screening agar-plate and agar-block methods. Experiments were carried out on Scots pine (Pinus sylvestris L.) wood. The aim of the performed studies was to investigate the effect of structure modification of IC and QAC with organic anions or copper (ll) and zinc complexes on their…
J Zabielska-Matejuk, W Wieczorek
Multicomponent biocide systems protect wood from decay fungi, mold fungi, and termites for interior applications
2004 - IRG/WP 04-30333
…Multicomponent systems were tested in AWPA soil block tests for inhibition of brown-rot and white-rot fungi, and ASTM standard tests for inhibition of mold fungi and termites. Multicomponent biocide systems combining a borate-base supplemented with voriconazole or thiabendazole, and either thujaplicin, or…
C A Clausen,V W Yang