BANGLADESH JOURNAL OF FOREST SCIENCE
A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
A Half-yearly Peer Reviewed Journal of Bangladesh Forest Research Institute
Heat treatment is often used for improve the dimensional stability of wood. In this study, the effect of heat treatment on physical and mechanical properties of Mahogany (Swietenia macrophylla King) and Acacia hybrid (Mangium x Auriculiformis) wood were examined. Samples were exposed to temperature levels of 110°C, 130°C and 150°C for time spans ranging from 3, 6 and 9 hours. Treated samples had higher mechanical properties compared to control samples. Based on the findings, dimensional stability of all types of wood samples improved with heat treatment. It seems that properties of these wood evaluated were more pronounced with increasing temperature and time durations.
This paper gives an overview on the initial growth performance ofmahogany
(Swietenia macrophylla King) planted in Chittagong city areas of Bangladesh. A guide
equationwas derived with logarithm to the base e of dominant height as a dependent
variable and reciprocal power of age as an independent variable. The growth
characteristics were estimated by regression techniques based on statistical and
biological criteria. The paper presents the growth statistics ofstand diameter atbreast
height, stand mean height, stand dominant height and basal area per hectare. The
selected models could be used to estimate the growth parameters in the plantations
with 9.0 m to 21.0 m dominant height at the age of 12 years.
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