Archive for May, 2009
« Previous Entries Next Entries »Removal of Dyes from Wastewater by thermally Treated Rice Husk
Sunday, May 31st, 2009Colored dye waste water arises as results of the production of dye and also as a consequence of its use in textile industry. Most of these dyes are toxic and non biodegradable which impede light penetration and cause numerous problems in several ways. Among decolorisation processes, adsorption technology is considered to be the most effective [...]
Commonness of Common Palmfly (Elymnias hypermnestra) will answer the rarity of endemic butterfly Ceylon Palmfly (Elymnias singhala)? A study of Mimicry, Distribution, Habitat, Behavior, and Life history
Sunday, May 31st, 2009Studies have shown the relationship between the geographic distribution of consumers (butterflies) and their hosts (food plants) have a triangular relationship. Though butterfly species that feed on more widely distributed hosts are themselves more widely distributed, some species have much more restricted ranges than their hosts have. Experiments with caged animals have conclusively demonstrated that [...]
Performance of Bell Pepper (Capsicum annum L.) in different media and farmers practices of hydroponics technology in Beralapanathara area
Sunday, May 31st, 2009A field survey and a research were conducted to evaluate the practices of hydroponic technique adapted by farmers, in 14 protected houses in Beralapanathara and to test the performance of bell pepper (Capsicum annum L, var. King Arther) in five different hydroponics media during February to July in 2008.
Survey results revealed that, about 76.9 % [...]
Effects of Cardamom Cultivation on Forest Structure and Soil Properties in the Montane Forest of Knuckles Conservation Area of Sri Lanka
Sunday, May 31st, 2009The ecological effects of cardamom cultivation in the understorey of tropical forests have been debated but remain poorly understood. The aim of this study was to determine the effect of cardamom cultivation and management on forest structure and surface soil properties in the montane forests of Knuckles Conservation Area in Sri Lanka. Vegetation and soil [...]
Industrial Level Adaptation of Newly Prepared Hydroponic Solution Compared to Alberts Solution
Sunday, May 31st, 2009A field survey and an industrial level adaptation test was conducted in Beralapanathara green house system (Urubokka, Matara district) from April to July in 2008. Data were collected from 13 respondents via pre- tested questionnaire for the survey. Results revealed that both Bell pepper and Cucumber are grown by farmers by adapting different potting media [...]
Development of SNG from Municipal Solid Waste for Transport
Sunday, May 31st, 2009CNG is a proven transport fuel as evident in India. SNG (synthetic natural gas) refers to the same gas from a raw material basis of solid waste. SNG refers to the carbon dioxide scrubbed biogas.
Biogas is the valuable gas produced by the anaerobic digestion of organic matter under anaerobic conditions. There are various raw materials [...]
Identification of Suitable Earthworm Species for Introduction of Vermicompost Production in Sri Lanka
Sunday, May 31st, 2009Earthworms (Annelida: Oligochaeta) contribute to soil fertility and play a key role in composting garbage. Recycling of organic wastes using earthworms produce compost known as vermicompost. This method is one of speediest, environmental friendly and economically viable method of compost production which has gained importance due to higher in plant nutrient contents compared to compost [...]
Comparison of Adsorption Characteristics of Activated Carbons from Waste Biomass for Dye Removal from Aqueous Solutions
Saturday, May 30th, 2009Many industries, especially textile industries and pulp and paper industries, often use dyes and pigments to color their products. The real hazard cause by colour in water is dye toxicity and the ability of the colouring agents to interfere with the transmission of light through water, thus hindering photosynthesis in aquatic plants. Industries use biological [...]
Lichenological Studies in Sri Lanka
Saturday, May 30th, 2009Authors: R.G.U. Jayalal 1, D.S.A. Wijesundara 2, V. Karunaratne 1
1Department of Chemistry, University of Peradeniya, Peradeniya, Sri Lanka.
2Department of National Botanic Gardens, Peradeniya, Sri Lanka
Sri Lanka has very rich plant diversity and includes plants that belong a variety of taxonomic groups. Out of these, lichens are a highly specialized and ubiquitous group as they have [...]
Characterization of Suwandal and Heenati rice varieties for the fragrance gene using Polymerase Chain Reaction based molecular markers
Saturday, May 30th, 2009Aromatic rice is ranked at the top in the rice world market. Only few recommended aromatic rice varieties are available in Sri Lanka although demand for this trait is increasing world wide. As Sri Lanka is a rich source of bio-diversity, country holds many traditional varieties with favorable qualities. Therefore, characterization of local rice varieties [...]
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