Your search resulted in 124 documents. Displaying 25 entries per page.
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
Studies of the mechanism of chromated-copper preservative. Fixation using electron spin resonance
1992 - IRG/WP 92-3701
Two softwoods and one hardwood species were treated with chromium trioxide, copper sulphate, chromated-copper wood preservative (CCA). The treated wood samples were analyzed during fixation by electron spin resonance (ESR). ESR spectra indicated that more than one Cr(V) species was generated from Cr(VI) soon after CCA treatment. The Cr(V) signal became strong within increased several hours followe...
K Yamamoto, J N R Ruddick
A quantitative weathering study of wood surfaces modified by chromium VI and iron III compounds
1989 - IRG/WP 2330
Thin veneers of Pinus radiata were treated with dilute aqueous solutions of chromium VI and iron III compounds and exposed to natural weathering for 35 days. Zero-span tensile strength and weight losses of treated veneers were compared with losses observed in untreated specimens In a study designed to demonstrate the applicability of strength and weight loss measurements to the rapid quantitative ...
P D Evans, K J Schmalzl
Minutes of the meetings of WG III
1985 - IRG/WP 3355
IRG Secretariat
Minutes of the meetings of WG III
1980 - IRG/WP 3161
IRG Secretariat
Minutes of the meetings of WG III
1977 - IRG/WP 3103
IRG Secretariat
Physical properties of ß-1,4-Xylanase produced by Postia (=Poria) placenta: Implications for the control of brown rot
1987 - IRG/WP 1318
The degradation of hemicelluloses is an early event in wood decay by brown-rot fungi. An understanding of the physical properties of hemicellulases may suggest target mechanisms for the development of new control agents. Endo-b-1,4-xylanase was partially purified by column chromatography from wood decayed by Postia (= Poria) placenta. The enzyme was extremely resistant to denaturing conditions; no...
J A Micales, F Green III, C A Clausen, T L Highley
Agenda WG III
1972 - IRG/WP 306
IRG Secretariat
Agenda WG III
1985 - IRG/WP 3350
IRG Secretariat
Collaborative soft rot tests: PRL tests of Cu/Cr/As preservative using method of Document No: IRG/WP/208
1973 - IRG/WP 223
These tests were undertaken as a preliminary to the next series of collaborative soft rot tests. An interim report has already been presented at Berlin in 1972 as Document No: IRG/WP/211...
J K Carey, J G Savory
Minutes of the meetings of WG III
1981 - IRG/WP 3181
IRG Secretariat
Agenda WG III
1990 - IRG/WP 3621
IRG Secretariat
Agenda WG III
1989 - IRG/WP 3549
IRG Secretariat
Cu, Cr and As distribution in soils adjacent to CCA treated utility poles in Eastern Black Sea Region of Turkey
2004 - IRG/WP 04-50214
In this study, the main objective was to asses the distribution of Cu, Cr, and As in soils adjacent to CCA treated utility poles in Eastern Blacksea Region of Turkey (Trabzon, Rize and Artvin ) and determine the influence of soil composition.
Surface (0-5cm), subsurface soil samples (30-40cm) were collected near CCA-treated utility poles and control soil samples away from CCA-treated utility pole...
E D Gezer, Ü C Yildiz, A Temiz, S Yildiz, E Dizman
Trials on the field control of the Formosan subterranean termite with Amdro® bait
1982 - IRG/WP 1163
Amdro® - treated paper towels were introduced into two field colonies of the Formosan subterranean termite in Hawaii. At the concentration of 180 ppm, the toxicant bait was ineffective one month after the introduction. At higher concentrations (> 6,400 ppm), the baits were eaten initially; however, one week after introduction, termites avoided or covered the baits. The 15,000 ppm baits supress...
N-Y Su, M Tamashiro, J R Yates III
Report of Section 1 2003
2003 - IRG/WP 03-10502
F Green III
Agenda WG III
1987 - IRG/WP 3457
IRG Secretariat
Agenda WG III
1988 - IRG/WP 3491
IRG Secretariat
Minutes of the meetings of WG III
1986 - IRG/WP 3397
IRG Secretariat
Minutes of the meetings of WG III
1989 - IRG/WP 3558
IRG Secretariat
Agenda WG III
1976 - IRG/WP 362
IRG Secretariat
Minutes of the Meeting of WG III 1971
1971 - IRG/WP 301
IRG Secretariat
Minutes of the meetings of WG III
1983 - IRG/WP 3267
IRG Secretariat
Agenda WG III
1991 - IRG/WP 3674
IRG Secretariat
Minutes of the Meeting of WG III 1969
1969 - IRG/WP III 2
IRG Secretariat