Browsing Science - Temp by Issue Date

Browsing Science - Temp by Issue Date

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  • Study on the active time period, spatial distribution and nectar plants of recorded butterfly species in Kiralakelle Wetland in Matara District. 
    Wijekoon, W.M.C.D.; Wegiriya, H.C.E.; Bogahawatte, C.N.L. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    Although, butterflies are a group of charismatic insects, their behaviors have been rather poorly documented in Sri Lanka. Thus, present study investigated the active time period, spatial distribution in different strata ...
  • Analysis of relative growth patterns and sexual dimorphism of selected morphometric and meristic characters of Macrobrachium rosenbergii dacqueti (Sunier 1925) 
    Gamage, N.T.G.; Munasinghe, D.H.N (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    Freshwater prawn Macrobrachium rosenbergii dacqueti is one of the most economically important crustacean species cultured within its’ natural distribution and beyond. This study was conducted to estimate the sexual ...
  • A Field survey on ant species in four selected locations in Wellamadama premises of the University of Ruhuna. 
    Wijekoon, W.M.C.D.; Bogahawatte, C.N.L.; Senevirathna, J.D.M. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    Ants are very common group of insects and constitute up to 20% of the animal biomass in tropical region. About 65 genera, 12 subfamilies and 210 species were recorded from Sri Lanka. Majority of ants belongs to the ...
  • Preliminary studies of the seed of Aleurites moluccana to findout the cytotoxic compounds and the preparation of biodiesel. 
    Wijesinghe, W.M.C.S.; Bulugahapitiya, V.P. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    The constituents in the seed oil of Aleurites moluccana (Tel-kekuna) were investigated for finding out the cytotoxic compounds and the preparation of biodiesel. It was found that the oil of the seeds contain four main ...
  • A low cost automated device to release a certain volume of liquid 
    Ranatunga, E.M.; Dharmaratna, W.G.D. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    A simple automated device have been designed and constructed in order to release a predetermined amount of liquid from a container. This preliminary study indicates that the device releases water with an accuracy of ± ...
  • Critical micelle concentration (CMC) of SDS micelles at different pH, and added salt concentrations 
    Kulasooriya, E.S.; Gangabadage, C.S. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    Detergents are amphipathic molecules that consisting of hydrophobic tail and a hydrophilic head group. They can self aggregate to form micelles at a threshold concentration called the critical micelle concentration ...
  • A Study on l-Nitro-2-Napthyl Acetate as a Chromogenic substrate for the determination of Fluoride ions in water 
    Rathnayaka, S.S.K.; Dissanayaka, A.S. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    0- aryl esters are known to be sensitive to fluoride ions in organic medium. Based on this property, a kinetic method for the spetrophotometric determination of fluoride ion has been investigated. This studies has been ...
  • Development of modified carbohydrate adhesives 
    Sandamali, H.M.N.; Panamgama, L.A. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    A process for manufacturing maize starch based high quality and environmental friendly adhesives was investigated by using borax and poly vinyl alcohol as modifiers. Maize starch was denatured by oxidation with Hydrogen ...
  • Extraction, Isolation and Identification of Compounds in Cynodon dactylon 
    Athukorala, S.A.A.S.P.; Hettiarachchi, S.R. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    The grass called Cynodon dactylon is a valuable medicinal plant which is use to cure several diseases. After extracting compound from the plant in methanol, it was to sequential subjected liquid liquidextraction method ...
  • Green method for the treating of waste water from service station 
    Ganegamage, S.K.; Bulugahapitiya, V.P. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    Newly established method for the treatment of waste water from the service station is presented. The effluent from the service station was first passed through the sedimentation tank to deposit mud and solid material and ...
  • Cover page 
    Unknown author (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
  • Contents 
    Unknown author (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
  • Details 
    Unknown author (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
  • Preparation and Characterization of Semiconductor Oxide Thin Films for Hydrogen Photogeneration by Splitting of Water 
    Samanmalie, P.A.C.; Hewage, J. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    The semiconductor thin films of ZnO and CU2O were prepared by simple and low cost techniques and characterized for determining the photogeneration of Hydrogen by splitting water. Semiconductor thin film and a Cu plate ...
  • Investigation of a new method to study solar cell characteristics 
    Prasadh, K.V.S.; Mahanama, G.D.K.; Jayatilake, K.P.S. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    Analysis of I-V characteristics with modeling concepts contribute greatly to the future of solar cell industry. Experimental I-V data or solar cells together with two diode model were used for investigations. Solar cells ...
  • Differential thermal analysis of some selected edible fats 
    Menike, T.R.M.C.D.; Edussuriya, M. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    The thermal stability of edible fats is an important factor that affects their quality. Differential Thermal Analysis (DTA) is a major technique carries for qualitative as well as quantitative analysis of eaible fats. ...
  • An Automated Cordial Machine 
    Weerasooriya, W.M.C.A.; Niroshani, H.P.D.; Mahanama, G.D.K. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    Delicious drinks always quench the thirst. Making drinks deliciously as well as effectively is the need of the modem society. The vendors who maintain cool spots and snack shops eager to have support machines for making ...
  • Construction of an efficient parabolic solar cooker at low cost 
    Dharmaratna, W.G.D.; Perera, K.A.C. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    Parabolic solar cookers have been used in the world for many years. However, they are not popular in Sri Lanka, mainly due to the high cost and the low efficiency. These cookers are not produced commercially in Sri Lanka, ...
  • Effect of aqueous leaf extract of neem (Azadirachta indica) on different age groups of second stage-juveniles of Meloidogyne incognita 
    Premachandra, W.T.S.D.; Weeraratne, H.P. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    The effect of aqueous neem leaf extract on the survival of second-stage juveniles at four different age groups, i.e., one, three, five and seven-day-old, second and the egg hatchability of Meloidogyne incognita was ...
  • Point-Mutation Effects on Charge-Transport Properties of DNA 
    Roemer, Rudolf A; Shih, Chi-Tin; Wells, Stephen; Cheng, Yurf-Yin; Hsu, Ching-Ling (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)
    There is increasing evidence that DNA can support a considerable degree of charge transport along the strand by hopping of holes from one base to another, and that this charge transport may be relevant to DNA regu ation, ...

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