Your search resulted in 27 documents. Displaying 25 entries per page.
1988 Official Photo
1988 -
IRG Secretariat
1978 Official Photo
1978 -
IRG Secretariat
1982 Official Photo
1982 -
IRG Secretariat
1985 Official Photo
1985 -
IRG Secretariat
1987 Official Photo
1987 -
IRG Secretariat
1997 Official Photo
1997 -
IRG Secretariat
1983 Official Photo
1983 -
IRG Secretariat
1999 Official Photo
1999 -
IRG Secretariat
1995 Official Photo
1995 -
IRG Secretariat
1994 Official Photo
1994 -
IRG Secretariat
1970 Official Photo
1970 -
IRG Secretariat
1998 Official Photo
1998 -
IRG Secretariat
2003 Official Photo
2003 -
IRG Secretariat
1980 Official Photo
1980 -
IRG Secretariat
1986 Official Photo
1986 -
IRG Secretariat
Photo-discoloration and Degradation of Wood and its Stabilisation by Modification with Benzoyl Chloride
2004 - IRG/WP 04-40274
Photo degradation of Pinus roxburghii (chir pine) and Hevea brasiliensis (rubber wood) was studied under artificial accelerated weathering conditions in a Xenon test chamber. The irradiated samples were analyzed for color changes and chemical changes. Analysis of colour changes in wood surfaces by UV-Vis. irradiation was carried out using a colour measuring (CIELAB) system and chemical changes ...
K K Pandey
1981 Official Photo
1981 -
IRG Secretariat
1992 Official Photo
1992 -
IRG Secretariat
1996 Official Photo
1996 -
IRG Secretariat
2016 Official photo
2016 - 2016 Official photo
IRG Secretariat
1976 Official photo
1976 - 1976 Official photo
IRG Secretariat
2018 Official photo
2018 - 2018 Official photo
IRG Secretariat
Correlation between changes in colour and chemical composition during photo-degradation of wood surfaces
2005 - IRG/WP 05-40301
Changes in colour of wood (yellowing) during photo degradation or weathering reflect chemical changes in wood. Therefore, the relationship between changes in chemical composition and CIELAB colour parameters is very important to characterize photodegradation of lignocellulosic surfaces. In this study, the changes in chemical composition and yellowing due to photo-degradation was studied by expos...
K K Pandey
Microscopic FT-IR depth profiling study of photo-induced degradation in wood
2001 - IRG/WP 01-20229
FT-IR microspectroscopy was used to monitor the changes in the chemical composition at various depths from the photo-irradiated surface of sugi (Cryptomeria japonica D. Don) sapwood. The radially cut wood face was exposed to artificial solar radiation from a xenon light source at 375 Wm-2 (in a 300 - 700 nm spectral range) for up to 600 h. The IR depth profiling spectra showed that the artificial ...
Y Kataoka, M Kiguchi.
The Effect of Flavonoids on Colour and Spectral Changes of the Wood Surface Caused by Heat Treatment or Ultra-violet Irradiation
2006 - IRG/WP 06-40341
Both heat treatment and UV irradiation can cause discolouration and change in the spectral properties of wood surface. Some of the characteristic flavonols have significant role on colour and spectral changes, despite of their relative small quantities in wood.
Colour changes and spectral properties of natural and extracted black locust (Robinia pseudoacacia L.) and poplar (Populus nigra L.) were...
R Csonka-Rákosa, L Molnár-Hamvas, E Börcsök, J Molnár, K Németh