Your search resulted in 6688 documents. Displaying 25 entries per page.
Species pairs in the Teredinidae
1987 - IRG/WP 4142
Classification and identification in the Teredinidae are based on the anatomy of the major organ systems, the shells, and particularly on the characters of the blade-like pallets which are used to plug the opening of the burrow when the siphons are retracted. Variations in the reproductive system and/or reproductive behaviour (among the most common and best documented isolating mechanisms in anima...
R D Turner, C B Calloway
Bioassays for rapid assessment of heavy metal toxicity in seawater
1998 - IRG/WP 98-50112
In evaluating the effect of CCA leachate on the establishment of fouling communities on wood exposed in the sea, three organisms were assessed as biological indicators of heavy metal toxicity. These were two macroalgae, Fucus serratus and Undaria pinnatifida. and the motile protist thraustochytrid, Schizochytrium aggregatum. The choice of these organisms for the tests carried out was based on the ...
C J Brown, R L Fletcher, R A Eaton
Modelling the control of decay in freshly felled pine poles
1997 - IRG/WP 97-10206
In a recent study investigating control of decay in freshly felled pine utility poles, it became apparent that the efficacy of different treatment methods was strongly related to the size of the material being treated. A topical application of 5% w/v disodium octaborate tetrahydrate (DOT), brush applied to the cut surfaces of logs with otherwise intact bark was just as effective at excluding white...
M W Schoeman, W Van der Werf, J F Webber, D J Dickinson
Copper binding capacity of modified wood flour
1992 - IRG/WP 92-3709
Wood flour was modified by reaction with oxidising agents and CCA preservative. The copper chromium and arsenic were removed from the CCA treated wood flour by an acid leaching procedure. The modified wood flours were allowed to react with copper acetate solution and the level of copper fixation achieved was determined. The modified wood flours had greater affinity for copper ions present in solut...
N C Milowych, W B Banks, J A Cornfield
Guidelines for giving an oral presentation at an IRG Conference
2003 - IRG/WP 03-60179
IRG Secretariat
Theoretical and practical experiments with eradication of the dry rot fungus by means of microwaves
1992 - IRG/WP 92-1577
Engineer Claus Andersen constructed a device in 1986 for microwave treatment of fungal infested timber. The device was tested on ampullae with live fungal mycelium of the dry rot fungus. A 10 minutes treatment at 37°C gave satisfactory eradicating effect. The method has since been used in practice in approximately 100 instances. A spot-test control has shown satisfactory results....
J Bech-Andersen, C Andersen
Ultrastructure of degraded, CCA-treated Pinus radiata wood from a marine pile
1990 - IRG/WP 1461
During an inspection of marine piles, 12 years after installation, severe degradation was noted on one of them in the vicinity of a corroded eye-bolt. The wood was dark brown in colour and tended to crumble easily. Wood fragments were examined by light microscopy and scanning and transmission electron microscopy and were also analysed for carbohydrates and lignin. Light microscopy showed numerous ...
A P Singh, M E Hedley
Investigation of microwave as a means of eradicating dry rot attack in buildings
1992 - IRG/WP 92-1545
A microwave-apparatus developed for treatment of building-structures infested by dry rot was tested in the laboratory. The test-conditions simulated treatment of either infested timber or infested brickwork. Sawdust samples, both wet and dry, infested by viable mycelium of Serpula lacrymans were packed in glass-tubes. The tubes were then placed in the middle of either 20 cm thick wooden beams or 3...
C Kjerulf-Jensen, A P Koch
A study of wood quality of Juglans nigra and hybrid walnut (MJ 209xRA) : durability against Coriolus versicolor, density and MOR
2004 - IRG/WP 04-10522
The study investigated possible effects of harvesting season on some wood properties of Juglan nigra (JN) and a hybrid walnut (MJ209xRA). The samples were taken from trees which were harvested in June July, August, November of the same year, and March in the year after to determine whether there were any significant differences in wood properties as regards the harvesting seasons. In order to test...
B Charrier, F Charrier, D P Kamdem, J B Aurel, G Janin
Statutes
1981 - IRG/WP 5140
IRG Secretariat
2nd IRGWP - Questionnaire on the state of pollution control in the field of wood preservation
1981 - IRG/WP 3185
H Willeitner
On the possibilities of the use of juvenile hormone analogues (JHAs) in termite control. (A preliminary note for information)
1983 - IRG/WP 1214
A T De Lelis
Results of field tests on the natural durability of timber (1932-1975)
1976 - IRG/WP 3105
This paper describes a continuing field stake trial to determine the natural resistance of different species of timber to decay. Data are presented for about 180 timbers, covering over 6000 stakes, and the results are discussed in terms of a natural durability classification....
D W Purslow
An evaluation of anti-apstain chemicals in Queensland, Australia
1986 - IRG/WP 3374
Five formulations were evaluated for potential use as antisapstain chemicals. Tolcide FSM (0.01, 0.02, 0.04%), Koppers N.P.-1 (0.70, 0.35, 0.25%), Kathon WT (0.10, 0.25, 0.40%) and Sinesto B (2.5, 5.0 and 7.5%) offer potential as antisapstain treatments. An incorrect stock of Busan 1009 was used resulting in unacceptable results....
L E Leightley
Agenda Plenary 1980
1980 - IRG/WP 94
IRG Secretariat
An evaluation of CCA, CCB and CCP preservatives using a "sandwich test"
1991 - IRG/WP 2370
The last two years has seen some important changes in standards and preservative types used in Scandinavia, which have led to a wider choice for specifiers. In order to identify those treatments suitable for replacement or reinforcement of decayed constructional timbers, it was felt necessary to modify the standard EN 113 test. Impregnated blocks were sandwiched between two untreated blocks, previ...
A P Koch, L B Sheard
Effects of Trichoderma harzianum on enzyme activity and oxalic acid production of Gloeophyllum trabeum in ponderosa pine sapwood blocks
1992 - IRG/WP 92-1550
The effect of a bioprotectant, Trichoderma harzianum, on the activity of Gloeophyllum trabeum was investigated using a wood wafer sandwich method. Wood weight loss was greatest with Gloeophyllum trabeum exposed wafers, intermediate with those exposed to both the bioprotectant and decay fungus, and lowest with the bioprotectant exposed wafers. Extracts of wood wafers after 2, 4, or 6 weeks of funga...
C M Sexton, J J Morrell
International standards can we make them simple?
1996 - IRG/WP 96-20092
The earth is round and therefore limited in space. A consequence is that we - earthlings - are convicted to mutual understanding with a basic need to pay attention to others. Leading countries have been developing standards for years (i.e. USA/CANADA - AUSTRALIA/NEW ZEALAND - SOUTH AFRICA - EUROPE). They are keen and proud to argue on their peculiarities and advantages. A survey of the various sch...
G Ozanne
Work programme of CEN/TC 38 (March 2000) and European publications
2000 - IRG/WP 00-20206
Remind of stage significance
Stage 32 : Working document existing and circulated in the technical body (TC, WG).
Stage 40 : Document available in the CEN/CS to start CEN/CENELEC enquiry (6 months).
Stage 43 : Second CEN/CENELEC enquiry started (2 to 4 months).
Stage 49 : Document available in the CEN/CS to start formal vote or ENV vote.
New scope of the CEN/TC 38
" Standardization of the nat...
R Hüe
Methyl bromide eradication of the oak wilt fungus in logs. Laboratory and field fumigation
1981 - IRG/WP 3168
Concern over accidental introduction of the oak wilt fungus (Ceratocystis fagacearum) into oak-importing nations has prompted a study supported by the U.S. National Lumber Exporter's Assn. to assess the efficacy of methyl bromide fumigation to eradicate the fungus from logs and lumber. Laboratory and field fumigation trials to develop a reliable and realistic treatment were performed on r...
E L Schmidt, M M Ruetze, D W French
Report of Section 3 2002
2002 - IRG/WP 02-30302
G R Williams
Minutes of the Plenary Meeting 1995
1995 - IRG/WP 95-60055
IRG Secretariat
Agenda Plenary 1976
1976 - IRG/WP 68
IRG Secretariat
Agenda WG I
1980 - IRG/WP 1101
IRG Secretariat
Minutes of the Plenary Meeting 1976
1976 - IRG/WP 71
IRG Secretariat