Your search resulted in 3094 documents. Displaying 25 entries per page.
Report of activity of CEN/TC 38: Test Methods for Wood Preservatives
1987 - IRG/WP 2287
G Castan
The proposal for optimalization of the agar-block method for wood preservatives fungitoxic evaluation
1995 - IRG/WP 95-20065
On the base of own research and other scientists results the proposal for optimalization of agar-block method was presented by:
- selection of test fungal species and strains and central distribution of their pure cultures,
- change of the treatment and control samples exposure procedure,
- application of mathematical estimation of toxic value results,
- shortening the duration of fungitoxic t...
J Wazny
Preservation of hyphal-forming brown- and white-rot wood-inhabiting basidiomycetes
2001 - IRG/WP 01-10397
Lyophilization is an excellent technique for the long-term preservation of hyphal-forming brown- and white-rot wood-inhabiting basidiomycotina. However, vegetative mycelial isolates are not lyophilizable. In this study, 10 brown-rot and 10 white-rot basidiomycetous non-sporulating, non-chlamydosporulating, and non-bubillerferous basidiomycetes fungi were tested for viability after lyophilization. ...
S C Croan
Leaching of chromium and other cca components from wood-cement composites made with spent CCA treated wood
2000 - IRG/WP 00-50153
Wood cement composites are an attractive option for recycling spent treated wood, since the CCA treatment enhances the physical, mechanical and biological resistance properties of the composite. However, we have noted a higher than normal leaching of chromium from these products and this appears to result from conversion of some of the trivalent chromium to the more leachable and toxic hexavalent ...
D Qi, P A Cooper
Autoxidation of beech condensate
2003 - IRG/WP 03-40261
Liquid effluent from steaming beech wood was studied. The effluent contains many phenolic compounds which can present a significant toxicity. The effluent was treated by oxidation was carried out at 250 rpm for 30 min with NaOH. This was followed flocculation with CaCl2 for 30 min. The influence of parameters such as pH, time of autoxidation were studied. Experimental results reveal the electrosta...
M Irmouli, J P Haluk
Experience with an industrial scale-up for the biological purification of CCA-treated wood waste
1997 - IRG/WP 97-50095
The biological purification of CCA-treated wood waste was tested in co-operation of the BFH and the Italian impregnation plant SoFoMe. Chipped poles were infested with the chromium and arsenic tolerant brown-rot fungus Antrodia vaillantii which can transform in the laboratory ca. 90% of the chromium and arsenic into watersoluble salts. These can be leached to 100-200 ppm residual metal content. Th...
H Leithoff, R-D Peek
Questionnaire: The use of computers in wood preservation research
1985 - IRG/WP 2240
E F Baines
Towards a colour assay of wood degradation
1982 - IRG/WP 2180
A colour assay for the enzyme catalase is described. Since the activity of this enzyme has previously been shown to be correlated with degree of wood degradation as determined by other methods, this assay may provide a rapid quantitative indicator of superficial and internal wood decay....
M A Line
Influence of variable lignin content on brown rot decay of wood
1987 - IRG/WP 1320
Compilation of published data and new experiments with brown-rotting fungi on different timber species suggest that their decay activity, in contrast to soft rot and white rot fungi, is not greatly influenced by the type or amount of lignin present....
T Nilsson, G F Daniel
Reference numbers of papers of the International Research Group on Wood Preservation issued to date
1970 - IRG/WP A 4
IRG Secretariat
A bibliography of organic solvent-based wood preservatives
1973 - IRG/WP 313 E
H Alliot
Questionnaire on the state of pollution control in the field of wood preservation
1974 - IRG/WP 52
H Willeitner
Incorporating insect behaviour in standard tests of wood preservatives - A possible way to reduce pesticide loadings
2000 - IRG/WP 00-20190
The application of wood preservatives to protect timber against insect infestation is common practice world wide. The effectiveness of wood protecting insecticides is usually determined in various standard tests. Depending on the target pest species and the test method, larvae of different developmental stages and sizes or adult insects are exposed artificially to the insecticide-treated commodity...
H Hertel, R Plarre
Wood preservation in Spain
1983 - IRG/WP 3266
This report includes some statistical data on the potential of Spanish forests and the country's timber consumption as well as detailing the extent of development of the wood products industries, and will help to give a better understanding of the use of this raw material in Spain. The main biological deteriorating organisms which damage wood are given and the capacity of the industrial t...
A Lopez de Roma, R Cockcroft
Tebuconazole - a new triazole fungicide for wood preservation
1991 - IRG/WP 3680
The great potential of Tebuconazole for wood preservation is demonstrated. Test carried out by official institutes shown that Tebuconazole is particularly effective against wood-rotting basidiomycetes strains. The efficacy of Tebuconazole against the brown rot Gloeophyllum trabeum is outstanding: the toxic value measured in accordane with EN 113, without·ageing, after leaching (EN 84) and after e...
O Exner
Agenda Special Seminar: Screening techniques for potential wood preservative chemicals
1978 - IRG/WP 2115
IRG Secretariat
Developments in wood preservation processing techniques in New Zealand
1980 - IRG/WP 3143
P Vinden, A J McQuire
Determination of physical properties of wood by Novel Guide
2006 - IRG/WP 06-40345
In empirical and theoretical determination of physical properties of wood, a schematic guide has been developed (as a novel guide) for the purpose of bringing facilities to researchers with a processing quantity in terms of data compilation. In this article physical properties of wood have been briefly described in respect to their effect on impregnation process, and technical information has been...
I Usta, M D Hale
A collaborative test to determine the efficacy of poyurethane coatings on wood samples exposed in the marine environment. 1st Interim Report
1988 - IRG/WP 4145
Wood samples coated with elastomeric polyurethane (ca. 50 mils thick) were exposed for up to 2 years in 12 tropical and temperate marine test sites with known teredinid, pholad and/or crustacean infestations. All uncoated control samples were destroyed or partially destroyed. Polyurethane-coated samples were not attacked, the surfaces of the coating were sound and the polyurethane adhered well to ...
R A Eaton
Natural durability of some common Indian timbers and marine plywood against biodeterioration in Kochi waters (India)
1992 - IRG/WP 92-4177
Panels of thirty-eight timber species and marine plywood were tested in Kochi harbour (South-west India) for periods ranging from 3 to 21 months, so as to evaluate their natural resistance against marine borers. Results indicate that all the timber species studied are non-durable, 6 of them having undergone more than 50% internal destruction within 3 months; 14 species in 6 months, 13 species and ...
L N Santhakumaran, M V Rao
Antifungal properties of new quaternary ammonium and imidazolium salts against wood decay, staining and mould fungi
2004 - IRG/WP 04-30347
The biological activity of twenty-four potential wood preservatives – imidazolium and quaternary ammonium salts with a modified anion structure 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 organ...
J Zabielska-Matejuk, W Wieczorek
Environmental behaviour of treated wood in (semi-)permanent contact with fresh or seawater
1998 - IRG/WP 98-50101-20
This study presents a strategy for the environmental toxicity evaluation of treated wood towards the aquatic compartment, using non target water organisms toxicity tests. A lixiviation process is applied on wood (Pinus sylvestris) treated with several wood preservatives formulations. The lixiviation process is carried out in the laboratory with ultrapure water or synthetic seawater.
After chemica...
P Marchal, C Martin
Role of Global Cooperation in Wood Protection for Conserving Forest Resources
2007 - IRG/WP 07-50249
The current uses of treated wood are discussed along with the emerging concerns for continued use of these products. The issues of new chemicals, treatments for wood based composites, migration of chemicals from treated wood, and the disposal of these products at the end of their useful life are all outlined. The potential for the IRG to serve as the focus for research discussion as well as coll...
J J Morrell, G Deroubaix
Conditions and possibility of nanobiocides formulation for wood protection
2008 - IRG/WP 08-30467
During development of nanobiocides for wood protection the need to identify mineral composition of wood in respect of trace elements and nourishing conditions of wood destroying fungi in relation to these elements was discussed....
J Wazny, A Kundzewicz
The Effect of Heat on the Retention of Ammoniacal Copper Quat (ACQ-AB) onto Scots Pine (Pinus Sylvestris L.) Wood
2008 - IRG/WP 08-40390
In this study, the sapwood of Scots pine (Pinus sylvestris L.) were treated with ammonical copper quat type (ACQ-AB), which is one of the environmentally friendly wood preservatives, by using soaking method as a functions of various temperatures and time. The results indicated that the retention behaviour of ACQ onto the wood was considerably affected by temperature of ACQ solution and treatment t...
M Hakki Alma, A Mukremin Kara