International Research Symposium on Pure and Applied Sciences (IRSPAS): Recent submissions

  • Nutraceutical properties of Garcinia zeylanica fruit rinds and leaves. 
    Lansakara, L.M.O.D.K.; Jayawardena, B.M. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Garcinia L. (Family Clusiaciae) is a large genus distributed mainly in tropical evergreen areas of South-east Asia and Africa. It consists of about 180 species, of which ten species are observed in Sri Lanka including five ...
  • The effect of changing the oil concentration on oil content, encapsulation efficiency and release rate of cinnamon leaf oil encapsulated chitosan microcapsules. 
    Muthumali, A.M.T.; Wickramarachchi, P.A.S.R. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Antibiosis, insect repelling and stress reducing properties of essential oils have been widely studied and well established. However, the release speeds of these compounds are usually high. Encapsulation is one of the ...
  • Phase programmed nanofabrication: Effect of organophosphite reactivity on the evolution of nickel phosphide nanocrystals. 
    Andaraarachchi, H. P.; Vela, J. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    A critical aspect of the synthesis and application of nanostructured materials is to precisely control their phase, composition, and consequently, properties. Traditional methods call for fine tuning and optimization of ...
  • Intrusion of Cd, As, Cr, Pb & Hg into selected rice varieties (Oryza sativa L.) in relation to their status in two different agricultural management systems. 
    Navarathna, N. M .C. M.; Pathiratne, K. A. S.; De Silva, D. S. M. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Five traditional varieties (TRV) and five newly improved hybrid varieties of paddy (NIRV) were cultivated under both conventional and organic farming conditions during Yala and Maha seasons at selected areas in Anuradhapura ...
  • Analysis for maximum energy transfer from existing DC-to-DC converter topologies. 
    Nagahapitiya, N. W. H. G. B.; Jayatissa, N. W. K. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    A voltage regulator is an electronic device, which maintains a constant output voltage for varying input voltages. There are different types of voltage regulators with various types of control schemes to achieve great ...
  • Black holes as boson stars. 
    Katugampala, K. D. W. J.; De Silva, L. N. K. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Kaup (1968) had shown that spin zero bosons could form stable stars. However, there had been no interest in these stars until the Higgs boson was discovered in 2012. Now there is renewed interest in boson stars. Clark ...
  • Thermal desalination process - Design perspectives. 
    Jayatissa, N. W. K. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Urban areas, although better served than rural areas, are struggling to keep up with the population growth. Population increase on Earth, is directly related to the global food and energy demand. Expansion of the agricultural ...
  • Determination of selenium content in conventional leafy green vegetables consumed by Sri Lankans. 
    Dayarathna, A.G.S.; De Silva, D.S.M. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Selenium is an essential micro-nutrient for both humans and animals, specially incorporated in the form of amino acids. It is an important trace element required for humans for proper thyroid functioning and to promote ...
  • Production of extracellular amylase under solid state fermentation using ground nut shell as the substrate and its application in textile and baking industry. 
    Apeksha, I.A.U.; Weerasooriya, M.K.B. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Amylases find potential applications in a number of industrial processes such as food, detergent, textiles, brewing and paper industries. Though Amylase can be obtained from several sources, use of microorganisms meet the ...
  • Optimization of growth parameters of photoactive Cu2ZnSnS4. 
    Fernando, W. T. R. S.; Jayathilaka, K. M. D. C.; Wijesundera, R. P.; Siripala, W. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Cu2ZnSnS4 (CZTS) is a promising candidate for application in low-cost and environmentally friendly thin film solar cells due to its optoelectronics properties. It is a perfect absorber material for photovoltaic applications ...
  • Determination of in vitro sun protection factor of extract of neem leaves and neem oil. 
    Amarathunga, A.A.M.D.D.N.; Kankanamge, S.U.; Sanjeewani, N.A.; Pathirana, R.N.; Rathnasooriya, W.D. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Neem (Azadirachta indica) is one of the most versatile medicinally and cosmetically valuable plants having a wide spectrum of biological activities such as antimicrobial, anti-inflammatory, antioxidant, antipyretic, ...
  • Investigation of electrically insulating and thermally conductive materials for a Peltier module with n-Cu2O and p-Cu2O electrodeposited semiconductors. 
    Gajanayake, G. K. U. P.; Abeywarna, U. K.; Wijesundera, L. B. D. R. P. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Thermoelectricity is a direct conversion of electrical energy into thermal energy and vice versa. Seebeck effect, Peltier effect and Thomson effect are thermoelectric effects observed for conductors during 1820-1920. After ...
  • Anti-oxidant activity of selected endo lichenic fungi (ELF) in mangrove ecosystem of Puttalam lagoon. 
    Maduranga, H.A.K.; Attanayake, R.N.; Amarasinghe, M.D.; Weerakoon, G.; Paranagama, P.A. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Natural products based drug development has become an attractive area of research since there are limited options available to treat certain non-infectious diseases such as diabetes. Among these natural products, it has ...
  • Molecular systematics and comparative draft genome analysis of strawberry leaf blight fungus. 
    Udayanga, D.; Castlebury, L.A. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    The leaf blight fungus, formerly known as “Phomopsis” obscurans originally described from the United States, is a severe pathogen of strawberry. Morphological characters are often inadequate for identification of this ...
  • Contarinia maculipennis as an emerging threat to Dendrobium in Sri Lanka - A case study. 
    Dias, M.A.; Amarasinghe, L.D.; Jayalath, W.G.H.; Attanayake, R.N. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Blossom midge, Contarinia maculipennis which belongs to Order Diptera: Family Cecidomyiidae is considered as one of the major threat to ornamental and several crop plant species due to its wide host range. For the first ...
  • Isolation and identification of different Trichoderma species and their effect on plant growth and development. 
    Hewavitharana, N.; Kannangara, S.D.P.; Senanayake, R.A.S.P. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Trichoderma spp. are fast growing fungi, widely used as bio-control agents for controlling soil borne diseases of plants as well as growth promoters. They are preferred in this aspect due to their ability to enhance growth ...
  • Photoelectrolysis of water using electrodeposited Cu2O electrodes. 
    Silva, A. G. T. D.; Jayathilaka, K. M. D. C.; Wijesundera, R. P.; Siripala, W. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    At present, fossil fuels are the main energy contributor of the world’s energy needs but gradually depletion of fossil fuels is heading towards an energy crisis. Therefore it is very important for us to find out a renewable ...
  • A low cost mass culture medium for Trichoderma spp. to be used in the control of damping off disease of big onion (Allium cepa L.). 
    Gunaratna, L.N.R.; Deshappriya, N.; Rajapaksha, R.G.S.A.S. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Big onion (Allium cepa L.) is a condiment grown for its flavorful bulbs in Sri Lanka. The most common soil-borne seedling disease of big onion seen at the nursery stage is damping off caused by Fusarium solani which results ...
  • Fabrication of Cu2O homojunction thin films for photovoltaic applications. 
    Kafi, F. S. B.; Jayathilaka, K.M.D.C.; Wijesundera, R. P.; Siripala, W. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Environmentally friendly cuprous oxide (Cu2O) is an attractive cost effective material for developing photovoltaic devices due to its astounding properties. Interestingly, the fabrication of low cost Cu2O homojunction ...
  • Nutrient leaching of selected invasive plant materials. 
    Ranasinghe, E.H.A.A.; Jayasekera, L.R.; Kannangara, S.D.P.; Ratnayake, R.M.C.S. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Thithonia diversifolia, Sphagneticola trilobata, Mikania scandens, Lantana camara, Chromolaena odorata, Panicum maximum and Mimosa pigra are fast growing invasive plants in Sri Lanka. In this study, the nutrient release ...

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