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A. K. Rana , Sadhna Tripathi , Indra Dev

Abstract

The green house effect is a widely known phenomenon based on established scientific principles. Human activities like burning of forest fuel , destruction of forests add CO₂ to the atmosphere , which enhance the global temperature. This problem requires creative solutions to maintain the balance of ecosystem and check the unnatural climate change. Afforstration and forest fuels replacements are some of the measures to control it. Besides the above , there are natural forces which decay the wood products and add CO₂ to the atmosphere. This paper deals with the different aspects of carbon increase , and measures to control it. Carbon storage in wood products may be one of the potential way , which can be achieved by prolonging the life of wood and wood products through adopting wood preservation.

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P. B. Dobriyal , Indra Dev

Abstract

Bamboo is a versatile material that has been in use for construction of houses and huts since long and occupies an important place in the economy of rural areas. Being a fast growing and short maturity period species, it provides an excellent alternate structural material. The natural resistance against fungi and insect attack is rather low and this has to be regarded as a major shortcoming. Natural service life of bamboo is only a few months and after preservative treatment, a long service life is expected. There are a number of preservatives and methods adopted to treat bamboo. Green round bamboo can be treated by modified Boucherie, steeping, wick, sap displacement and diffusion methods. For dry bamboo, pressure treatment is found suitable. Ammoniacal copper arsenate solution to treat dry bamboo by soaking process is also found suitable in round form. Treatability of the bamboo varies from outer to inner surface, as the flow of fluid depends upon the size, shape and number of the vascular bundles occurring in the culm. The vascular bundles occurring in the inner zone of the culm treat better than the vascular bundles at the periphery. The degree of penetration decreased with increasing distance of the tissues such as fibres and parenchyma from thevessels.

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P. B. Dobriyal , K. S. Chauhan , Indra Dev

Abstract

Treatability of Poplar wood on the basis of penetration indices has shown that it is a easily treatable wood. Regarding the natural durability, it is non durable species at ground contact and require preservative treatment to get adequate service life for better end utilisation.

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Indra Dev , S. R. D. Guha , Mohd. Swaleh

Abstract

Proximate chemical analysis of the Kernel was carried out in order to obtain the basic information about the type of constituents present. This shows 35.9% crude oil &31.87% of crude protein. Crude oil was further purified and its physic chemical properties were determined. Constituent acids of the oil were identified as arachidic acid, stearic acid, palmitic acid and oleic acid. Behenic &lignoceric acids were identified as trace acids.

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