Your search resulted in 3291 documents. Displaying 25 entries per page.
Wood preservation in China
1989 - IRG/WP 3546
Huiming Zhou, Zhongwei Jin
New conception for shortering the duration of fungitoxic test on wood preservatives. Part 1: State-of-art
1994 - IRG/WP 94-20044
The review of agar-block and soil-block methods published during 90 years focused of shortening the duration of fungitoxic test of wood preservatives is presented. Special attention was given to miniaturisation of wood specimens....
J Wazny, P Witomski
Bacterial wood degradation by a pure culture
1995 - IRG/WP 95-10093
A single-celled bacterium isolated from lake water yielded cell wall degradation in Scots pine sapwood samples. The bacterium attacked all cell wall layers in one month of laboratory culture. It was identified as Aureobacterium luteolum....
O Schmidt
Influence of bark damage on bluestain development in pine logs
1997 - IRG/WP 97-10197
Mechanized harvesting of conifers can lead to extensive bark damage, with the resulting wounds providing suitable entry points for bluestain fungi that are not associated with bark beetle vectors. However, the amount of bluestain colonisation can vary greatly between the different types of wound. To evaluate the effect of wound type seven different types of wounds were artificially created on fres...
A Uzunovic, J F Webber, D J Dickinson
Adequate preservative treatment of tropical and subtropical hardwoods for electric anchor logs
1997 - IRG/WP 97-40101
Most available 27 different hardwood species grown in Bangladesh was investigated regarding suitability as CCA-C (chromated copper arsenate type-C) impregnated anchor logs for rural electrification programme. The kiln-drying properties, sapwood thicknesses, CCA treatability grades of sapwood and heartwood, natural durability of heartwood and CCA retainability at specific assay zone separated 27 ha...
A K Lahiry
List of Members of IRG and contributing workers proposed for membership in IRG/WP/ - I - Sub-group 5
1976 - IRG/WP 154
S Cymorek
Wood-destroying Rhinotermitidae (Isoptera) in the oriental region
1984 - IRG/WP 1236
Species of the family Rhinotermitidae are important wood-destroying termites. From the Oriental zoogeographical region, 85 species of the family are reported of which some are wide spread and cause extensive damage to wood, wooden articles and other cellulosic products. The distribution, biology, ecology and pest status of the important wood-destroying species, in the Oriental region, are given in...
O B Chhotani
Measurement of VOC emissions from curative treated wood: A new emission test chamber
2001 - IRG/WP 01-50166-13
A poor indoor air quality (IAQ) is now recognized as a potential factor affecting occupants health. There are three basic strategies to improve IAQ: source control, improvement of the ventilation and use of air cleaners. Usually, the most efficient way to improve IAQ is to eliminate the different pollutant sources or to reduce their emissions. In order to precisely measure emissions from building ...
F Maupetit, O Ramalho, C Yrieix
Health and safety aspects of the use of wood preservatives. Preliminary evaluation of the answers to the IRG-Questionnaire on the state of pollution control in the field of wood preservation
1974 - IRG/WP 56
This preliminary evaluation of the answers to the IRG/WP-Questionnaire only gives a general survey on those questionnaires, which the author received until June 13, 1974. Details, such as correlations between importance of wood preservation and pollution control, could not be considered due to lack of time. For the same reason it was not possible so far, to evaluate the additional remarks given in...
H Willeitner
Biological control of blue stain on wood with Pseudomonas cepacia 6253. Laboratory and field test
1989 - IRG/WP 1380
Pseudomonas cepacia strain 6253 was tested as a biological control agent on wood samples under laboratory conditions, as well as in the field. In the laboratory this bacterium controlled blue stain on Pinus radiata, but field test were not totally satisfactory. However, after 2 months of field test, the test samples were 1/3 to 1/2 less stained then the control samples....
R Benko
2nd IRGWP - Questionnaire on the state of pollution control in the field of wood preservation (Introductory letter)
1981 - IRG/WP 3184
H Willeitner
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
The microbiological treatment of chlorophenolic preservative in spent utility poles
1993 - IRG/WP 93-50001-24
The number of pentachlorophenol (PCP) treated poles being removed from service is increasing, but disposal options for this material are limited. Biological Degradation of the preservatives in spent poles, before disposal or reuse, offers a promising technique. The reduction of PCP in treated timber, after inoculation with PCP-degrading bacterial species, Rhodococcus chlorophenolicus and Flavobact...
A McBain, F Cui, J N R Ruddick
Bioconversion of wood wastes into gourmet and medicinal mushrooms
1999 - IRG/WP 99-50129
Increased wood wastes, including thinned material from stagnated and overstocked small-diameter forests, are a menace to forest health, to the sustainability of ecosystems, and to community economic viability. The objective of this study is to recycle wood wastes into value-added products, such as gourmet and medicinal mushrooms, by using the white-rot basidiomycetes, Pleurotus ostreatus, P. popul...
S C Croan
Fungal degradation of wood treated with metal-based preservatives. Part 2: Redox states of chromium
1996 - IRG/WP 96-10164
Concerns have arisen about the leaching of heavy metals from wood treated with metal-based preservatives, such as chromated copper arsenate (CCA). Of particular concern is the toxic redox state of chromium and arsenic in aging and decayed CCA-treated wood. Generally, hexavalent chromium is more toxic than trivalent chromium and trivalent arsenic is more toxic than pentavalent arsenic. The desired ...
B Illman, S Bajt, T L Highley
2nd IRGWP - Questionnaire on the state of pollution control in the field of wood preservation
1981 - IRG/WP 3185
H Willeitner
Isolation and identification of the fungal flora in treated wood
1976 - IRG/WP 144
J F Levy
Characterization of glycopeptide from white-, brown- and soft rot fungi
2002 - IRG/WP 02-10424
Extracellular low-molecular-weight substances that catalyze a redox reaction between O2 and electron donors to produce hydroxyl radicals have been isolated from wood degrading cultures of white-rot, brown-rot, and soft-rot fungi. They contained protein, neutral carbohydrate, and Fe(II). These substances were glycosylated (glycated) peptides and suggested to form Amadori product (ketoamine). The...
H Tanaka, S Itakura, A Enoki
Preservative treatment of Pinus elliottii
1987 - IRG/WP 3435
The treatment of Pinus elliottii with copper-chrome-arsenic preservative by four alternative seasoning and treatment methods is investigated. Steam conditioning followed by either alternating pressure method (APM) or 'Q' treatment resulted in inadequate preservative penetration. Air drying or high temperature drying followed by the Bethell process resulted in a high standard of t...
P Vinden, L Carter
The effective control of moulds on freshly impregnated wood
2004 - IRG/WP 04-30352
Beside natural timber it is known, that moulds can also groth at the surface of impregnated wood. This material shows “defects” like resistant dark spots or color changes and causes complaints. During the last years, the problem by moulds seems to increase.
Laboratory studies were carried out to show the effect of impregnations against moulds. Wood samples (Pinus sylvestris L.) were impregn...
G Cofta, K Lutomski, P Jüngel
The Pilodyn instrument as a non-destructive tester of the shock resistance of wood
1978 - IRG/WP 2107
A new non-destructive shock resistance tester, the PILODYN, has been developed. The instrument measures the fracture surface area created by a constant amount of energy. It operates by shooting a blunt pin into wood by an exact amount of energy. The penetration depth is read on a scale. A wide field of application is open to a non-destructive shock resistance tester such as: 1) assessment of the r...
P Hoffmeyer
Restriction for use and waste management for pressure treated wood - The current situation in Norway
2001 - IRG/WP 01-50175
The Norwegian Environmental Authorities have this winter sent out a draft on restrictions in production and use of heavy metals in preservative treated timber. If it is passed, it will lead to drastic changes in the use of preservatives in Norway from this autumn. The environmental authorities and the preservative industry are both at present discussing waste management for CCA and creosote treate...
F G Evans
Spot-tests for TnBTO and AAC preservatives
1984 - IRG/WP 3279
Nineteen indicator systems were examined as potential alternative spot-tests for preservative penetration in TnBTO- (bis-tributyltin oxide) or AAC- (alkyl ammonium compound) treated wood. Results indicated phenylfluorone as an acceptable alternative to pyrocatechol violet for assessment of TnBTO, and cobaltous thiocyanate or a bromocresol green/quinine sulphate mixture as alternatives to bromophen...
D V Plackett
Waterborne silicones as wood preservatives
1995 - IRG/WP 95-30062
For more than thirty years silicones are used as water repellents for masonry. Their excellent properties make them also attractive for non-mineral substrates like wood. Although it was always thought that silicones are not able to perform on wood, a new type of aqueous silicone materials proofed the opposite: Excellent water repellency and astonishing durability were achieved. This paper describe...
R Hager
Detection of trace organics by ion mobility spectrometry
1990 - IRG/WP 3635
Ion Mobility Spectrometry (IMS) is a time of flight analytical technique that is suited to detect chemicals in the low parts per billion range. Some of the advantages of IMS are: operation at atmospheric pressure, fast response time (0.1-10 sec), and the ability to characterize individual chemical species in complex matrices without any prior sample preparation. In this paper, the utility of IMS i...
A H Lawrence