Your search resulted in 6688 documents. Displaying 25 entries per page.
Chemical and biological investigations of double-vacuum treated windows after 7½ years in service
1985 - IRG/WP 3339
Earlier investigations of double-vacuum treated windows after five years in service have shown that tributyltin oxide (TBTO) degrades to di- and monobutyltin compounds and that the resistance of the wood against decay decreases. An investigation 2.5 years later of the same windows shows that the degradation of TBTO proceeds fast. After 7.5 years in service only 15-35% of the remaining organotin co...
M-L Edlund, J Jermer, B Henningsson, W Hintze
Field evaluation of anti-sapstain products
1987 - IRG/WP 3402
Product A based on methylenebisthiocyanate, product B based on methylenebisthiocyanate plus 2-thiocyanomethylthio-benzothiazole, product C based on 2-thiocyanomethilthio-benzothiazole and product D based on didecyl dimethil ammonium chloride plus 3-iodo-2 propynil butyl carbarnate were evaluated on Pinus radiata sawn timber as fungicides for sapstain and mould in the Sawmill Division of the Univer...
M C Rose, A Bedoya
Evaluation of the effectiveness of Tuff Brite C in the control of sapstain in laboratory and field tests
1992 - IRG/WP 92-3718
Since 1990, the anti-sapstain product Tuff Brite C (ASC 66898) has been evaluated internationally in laboratory and field tests, and has been commercially introduced in New Zealand. The product is an aqueous flowable formulation of chlorothalonil and carbendazim. Efficacy tests which have been carried out in New Zealand, Australia, USA, South Africa and Europe are described and summarized. Tuff Br...
T L Woods, C J Klaver
The association of bacteria with the increased permeability of water-stored spruce wood
1973 - IRG/WP 325
A microbiological investigation was undertaken to check our earlier work on patterns of bacterial counts and pH changes in water-stored wood. A survey of industrial activity was conducted upstream from the storage site with a view to explaining the existing bacterial flora. Further experiments were carried out with spruce bolts in enclosed tanks, using lake water with its natural bacterial flora a...
J A Dunleavy, J P Moroney, S E Rossell
Oral toxicity of a slow-acting insecticide Amdro® to the Formosan subterranean termite
1982 - IRG/WP 1162
The use of toxic baits to control the Formosan subterranean termite Coptotermes formosanus Shiraki requires an insecticide that is non-repellent and sufficiently slow acting that poisoned termites leave treated areas before dying. Of the many insecticides screened, only Amdro® exhibited these characteristics. The oral toxicity (LD 50) of Amdro® to Coptotermes formosanus was estimated at 12.33 µ...
N-Y Su, M Tamashiro, J R Yates III
Harmonisation of technical requirements of treated wood in Europe. What can we learn from the experience in the Nordic countries?
1995 - IRG/WP 95-50040-20
In the Nordic countries the Nordic Wood Preservation Council (NWPC) has since 1972 harmonised the technical requirements for pressure treated timber in a Nordic standard. These requirements were used by the control schemes that exist in every country. In 1976 the first Nordic standard for pressure treated wood was accepted and in 1978 NWPC changed from recommendations to approvals for the preserva...
F G Evans
Distribution of boron from fused borate rods in Douglas-fir transmission poles
1996 - IRG/WP 96-30112
The diffusion of boron from fused borate rods (disodium octaborate tetrachydrate) was monitored over 42 months in CCA-treated Douglas-fir transmission poles. The boric acid equivalent was estimated by the curcumin/salicylic acid color test on increment cores removed from the poles. Moisture content of the poles was quite variable but was always above 20 percent. The percent of increment core lengt...
T L Highley, F Green III, W F Finney
The effect of copper/chrome/arsenic (CCA) treated timber on soil fungi
1981 - IRG/WP 1131
The aim of this investigation was to study the effect of CCA treated wood on the microflora of soil with particular reference to copper tolerant soft rot fungi. The IRG collaborative field experiment was designed to monitor the performance of a range of preservative treated hardwoods with particular reference to soft rot in CCA treated timber (Dickinson 1976) and site 33 of this experiment was use...
R J Murphy, D J Dickinson
Performance of proprietary formulations of anti-sapstain preservatives on Hevea brasiliensis timbers in laboratory tests
1989 - IRG/WP 3532
A total of 10 proprietary and two experimental formulations were assessed for their effectiveness against sap-stain caused by Botryodiplodia theobromae on Rubberwood (Hevea brasiliensis). Sterilized wood samples 5x20x40 mm³ were dipped in the test chemicals for 60 seconds and then inoculated with 0.5 ml of culture filtrate of Botryodiplodia theobromae for incubation in sterile, damp petri dishes....
L T Hong
Objectives of future collaborative soft rot tests
1972 - IRG/WP 209
Progress has been made towards acceptance of a defined laboratory test method for determining the toxicity of preservatives against soft rot fungi (Documents IRG/WP/201 and IRG/WP/208) and, at the 1971 meeting in Brussels, the framework of collaboration for the next phase of testing was discussed. Time available at Brussels did not permit restatement of objectives, consideration of the stages by w...
J G Savory
The limitations of legislative information distribution to the UK remedial preservation industry
1995 - IRG/WP 95-50060
The remedial preservation industry in the UK consists of companies that are rarely large enough to fit any of the definitions of small to medium enterprises (SMEs). They are faced with information on a wide range of legislation related to their industry from a bewildering variety of sources. Costs range from free to hundreds of pounds. Recent surveys have shown that a significant proportion of SME...
J M Ibbitson, G S Sawyer
FTIR characterization of copper ethanolamine - wood interaction
1999 - IRG/WP 99-20154
The interaction of copper ethanolamine (Cu-EA) and wood components was studied by using Fourier transform infrared spectroscopy (FTIR). In Cu-EA treated wood, significant reduction was noticed on the band attributed to carbonyl vibration from carboxylic groups at 1735±5 cm-1 and an increase in band intensity was obtained from carbonyl in carboxylate at 1595±5 cm-1. The same observation was made ...
Jun Zhang, D P Kamdem
Microdistribution of water-borne preservatives in blue gum treated by full-cell process
1990 - IRG/WP 3617
The present work deals with the study of the microdistribution of copper, chrome and arsenic elements in Eucalyptus globulus Labill. sapwood, treated with a CCA water-borne preservative by full-cell process, with the help of scanning electron microscopy together with energy dispersion X-ray analysis technique. The work shows that the retention of CCA elements is high in vessels and vasicentric par...
D De Sousa Castro Reimão, J M Palacios
Preliminary agar screening studies as the first stage in the development of a biological control system against basidiomycetes in ground contact situations
1995 - IRG/WP 95-10111
Preliminary screening of Trichoderma isolates as possible biocontrol agents for protection of wood in ground contact situations against basidiomycete decay was undertaken on three types of media. Media used were 3% malt extract agar (MEA); a low nutrient synthetic media with a carbon: nitrogen ratio typical of that found in softwoods (LNM); and a similar synthetic media where the amino acid profil...
E J B Tucker, A Bruce
The effect of Tween 80 on the growth, morphology, and enzyme secretion of Postia placenta
1990 - IRG/WP 1456
The nonionic surfactant Tween 80 (polyethylene oxide sorbitan mono-oleate) has been reported to increase enzyme production and/or secretion in bacteria and fungi. Such a procedure could greatly facilitate research into the physiology of wood-decay fungi since quantities of available enzyme are often limiting. The brown-rot fungus Postia placenta was grown in a synthetic medium supplemented with 0,...
J A Micales
The present status, characteristics and problems of wood based turning handicrafts industry in Bangladesh
2005 - IRG/WP 05-40298
Cottage industry is an important sector both socio-economically and environmentally, because such industries provide jobs and income, which restricts destruction of forest and increase of agri-land. Study on the present status, characteristics, and growth potential of wood based turning handicrafts industry in Bangladesh revealed that in Khulna District, there are 20 (twenty) numbers of turning wo...
A K M A Bosunia, M A Islam, M M Rahman, A K Lahiry
Multiple-Phase Pressure (MPP) Process: One-stage CCA treatment and accelerated fixation process. 4. MPP compared with other processes for achieving acceptable treatment of radiata pine heartwood
1998 - IRG/WP 98-40115
Although radiata pine sapwood is very amenable to preservative treatment, it is often difficult to achieve the required standard for heartwood treatment.
A preliminary investigation showed that to achieve the NZ Timber Preservation Council minimum penetration requirements for radiata pine heartwood using the Multiple-Phase Pressure (MPP) Process, a hydraulic pressure of at least 1250 kPa for 20 m...
K Nasheri, J A Drysdale, G Durbin, M E Hedley
Laboratory evaluation of water repellents as antisapstain treatment additives
1986 - IRG/WP 3382
Water repellent formulations consisting of five paraffin wax emulsions, three polyethylene wax emulsions, two polybutadiene resin emulsions, a polyester emulsion, and a ß-pinene polymer emulsion were subjected to water repellency tests on radiata pine sapwood. With one exception, the parafin wax emulsions were more effective water repellents than the alternative formulations and one of the paraff...
D V Plackett, C M Chittenden
The effect of synthetic pyrethroid insecticides on post-treatment emergence of Anobium punctatum
1992 - IRG/WP 92-1568
Data is presented from trials in which wood specimens, treated with a range of remedial insecticidal formulations, were aged in a roof void for 5 years and then tested for emergence of adult Anobium punctatum. The technique used followed that described in IRG/WP/2175. The results from formulations containing synthetic pyrethroids are compared with those from formulations containing the chlorinated...
R W Berry
Exposure of preservative treated wood to terrestrial microcosms, pure cultures of fungi and in the field
1997 - IRG/WP 97-20114
Small stakes (5x10x100 mm3) of treated and untreated Pinus sylvestris sapwood were exposed in terrestrial microcosms with different soils, two taken from test fields in Sweden, one soil from a conifer forest and one garden compost soil. Stakes of the same size were also exposed to pure cultures of the brown and white rot fungi, Postia placenta and Phanerochaete chrysosporium. After exposure, weigh...
M-L Edlund
Creosote immersion treatments of fence-posts of different pines
1986 - IRG/WP 3386
This paper describes the preservation with creosote by immersion of fence-post of Pinus sylvestris, Pinus pinea and Pinus radiata. Taking into account the rural use of the fence-post, an easy method available in the field to the agriculturalists. A regressions analysis has been carried out, dealing with the absorption, retentions and penetrations shown after 1, 3 and 7 days of treatment. The great...
C De Arana Moncada
On the possibilities of the use of juvenile hormone in wood protection
1976 - IRG/WP 363
The annual world-wide extent of losses caused by wood-destroying insects in timber in buildings and timberyards is very difficult to estimate. In general exact values are only known in cases of claims for damages from insurance companies or in litigation. At present the best known wood destroying insects in Switzerland are the house longhorn beetle (Hylotrupes bajulus) and the common furniture bee...
P Tscholl
Co-operative research project on L-joint testing. Sampling after 4 years exposure
1987 - IRG/WP 2274
In September 1983, Document No: IRG/WP/2208 was distributed giving guidance on sampling after 8 months exposure and including tables on which to record the test results. Similarly in September 1984, Document No: IRG/WP/2233 was distributed concerning sampling after 18 months exposure. No major problems have been notified to Princes Risborough Laboratory concerning the sampling method. It is theref...
J K Carey, A F Bravery
Changes in some important mechanical and physical properties of untreated and treated mining timber after exposure to the conditions of a colliery
1996 - IRG/WP 96-20082
Each of salt treated and untreated mining timber (wedge) pairs with 5x15 cm² cross-section and 155 cm length prepared from Scots pine, Bornmüller's fir and oriental beech was cut in the small standard test specimens to determine changes in some important mechanical and physical properties, 13 month after exposure to the conditions of Kozlu Hard Coal Mines in the depth of 52 m. Thus, the...
A Bobat
Field test of wood preservatives with Nasutitermes rippertii RAMBUR in Cuba
1996 - IRG/WP 96-10181
A field test of wood preservatives was carried out with Nasutitermes rippertii RAMBUR in the vicinity of the Material Testing Centre „Alexander von Humboldt" in Santiago de las Vegas/ Havana (Cuba) for 12 and 24 months. Test specimens of Pinus sylvestris L., Picea abies (L.) Karst. and Fagus sylvatica L. with dimensions of 25 x 25 x 490 mm³ were arranged vertically or horizontally in a circle o...
W Unger