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Browsing by Author "De Silva, D. S. M."

Browsing by Author "De Silva, D. S. M."

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  • Abundance and microplastic characterization found in the mud crab Scylla serrata inhabiting Negombo Lagoon, Sri Lanka 
    Dias, B. C. G.; Amarathunga, A. A. D.; De Silva, D. S. M.; Sivyer, D. B.; Maddumage, M. D. S. R. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)
    Microplastics (MPs) are tiny plastic particles less than 5 mm in size. The danger imposed by MPs continues to rise in the world due to an increase in anthropological pollutants in the environment. The tremendous socioeconomic ...
  • An alternative sulfur precursor for chemical bath deposition of CdS thin film 
    Gajanayake, G. K. U. P.; De Silva, D. S. M.; Atapattu, H. Y. R. (Gajanayake, G. K. U. P., De Silva, D. S. M and Atapattu, H. Y. R. (2019). An alternative sulfur precursor for chemical bath deposition of CdS thin film. 4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka. p98, 2019)
    Solar energy is the most appropriate electrification method for a tropical county like Sri Lanka. At present, Sri Lanka generates more than 72% of its electricity needs at a high cost by burning coal and diesel. To overcome ...
  • Assessment of litter and microplastic pollution in the water and sediment of Hirikatuoya stream, within the Walawe River basin, Sri Lanka 
    Lahiru, A. A. S.; Amarathunga, A. A. D.; Malavipathirana, S.; De Silva, D. S. M.; Sivyer, D. B. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)
    Rapid urbanization and mismanagement have led to a surge in plastic pollution in crucial aquatic ecosystems globally therefore accumulation of debris in aquatic ecosystems is rapidly increasing and they are becoming ultimate ...
  • Development and application of rice-straw biochar for removal of selected heavy metals (Pb, Cd and Cr) in contaminated paddy soil. 
    Irosha, K. P. C.; De Silva, D. S. M. (International Research Symposium on Pure and Applied Sciences, 2017 Faculty of Science, University of Kelaniya, Sri Lanka., 2017)
    Biochar which is derived from carbon rich biomass such as wood, manure and leaves, is increasingly recognized as multifunctional material for various applications like contaminant management in soil and water, soil amendment ...
  • Development of energy briquettes using Schleichera oleosa (Ceylon oak) wood, Oryza sativa (rice husk, rice straws and rice brain) and Saccharum officinarum (bagasse) 
    Dulanjana, K. D. A.; Udawatta, M. M.; Prasad, P. D. A.; Bodaragama, T. P.; De Silva, D. S. M. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)
    Fossil fuels and firewood are the primary household energy sources in Sri Lanka. However, due to the economic crisis and the increasing inflation, fossil fuels are no longer a preferable choice. The use of firewood also ...
  • Electrochemical conversion of graphite to graphene oxide and electrophoretic deposition of graphene oxide 
    Rifka, A. R. F.; De Silva, D. S. M. (Faculty of Science, University of Kelaniya Sri Lanka, 2022)
    Graphene and graphene oxide (GO) have gained huge importance in multiple fields, including chemistry and physics due to the desirable and incomparable properties which they possess. Practical applications of graphene and ...
  • Electrodeposited metal sulfide thin films for gas sensing applications 
    Namawardana, D. G. K. K.; Wickramathilaka, P. A. K. Y.; Atapattu, H. Y. R.; De Silva, D. S. M. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)
    Quantitative measurements of gases are based on a variety of physical or chemical principles. Among them semiconductor gas sensors are best candidates for the development of commercial gas sensors due to their higher ...
  • Electrodeposition and characterization of as-deposited and annealed CdTe thin films. 
    Kumarasinghe, K. D. M. S. P. K.; De Silva, D. S. M.; Pathiratne, K. A. S.; Salim, H. I.; Abdul-Manaf, N. A.; Dharmadasa, I. M. (Ceylon Journal of Science, 45(2), 53–59. DOI: http://doi.org/10.4038/cjs.v45i2.7388, 2016)
    Thin films of CdTe semiconductor materials were grown on fluorine doped tin oxide (FTO) conducting glass substrates using the technique of electrodeposition. CdSO4 at high concentrations and CdCl2, TeO2 at low concentrations ...
  • The influence of substrates on the device performance of the TCO/CBD-CdS/ EDCdTe and TCO/CBD-CdS/CSS-CdTe solar cells 
    Gajanayake, G. K. U. P.; Bandara, K. M. N. S.; De Silva, D. S. M.; Atapattu, H. Y. R. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)
    The development of cost-effective efficient photovoltaic cells is crucial for generating electricity with the most abundant solar energy to eliminate the energy crisis globally. At present, there is a growing interest in ...
  • 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 ...
  • Microplastic contamination in selected commercial fish species in Negombo Lagoon, Sri Lanka 
    Athukorala, A.; Amarathunga, A. A. D.; De Silva, D. S. M.; Bakir, A.; McGoran, A.; Sivyer, D. B.; De Silva, C. L. C. L.; Narangoda, S. R. C. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)
    Microplastics (MPs) act as physical anthropogenic pollutants and their ability to act as contaminant vectors in biological matrices has become a serious ecosystem and human health concern. The present study, for the first ...
  • Microplastic contamination in shrimps from the Negombo Lagoon- Sri Lanka 
    Lawan, P. L. M. J. H.; De Silva, D. S. M.; Amarathunga, A. A. D.; McGoran, A.; Bakir, A.; Sivyer, D. B. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)
    Microplastics (MPs) are minute pieces of plastic debris that are smaller than 5 millimeters in size. They are created through the fragmentation or degradation of more oversized plastic items such as bottles, bags, and ...
  • Microplastics in selected offshore pelagic fish in Indian Ocean 
    Jayarathna, N. K. D. M. P.; Walpita, C. N.; Amarathunga, A. A. D.; De Silva, D. S. M.; Sivyer, D. B. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)
    Microplastics (MPs) pollution in marine environment is an emerging threat to marine biota. Marine pelagic fish species such as tuna and tuna-like species caught during offshore fisheries in open seas, are known to be more ...
  • Pyrolysis of plastic waste into liquid fuel 
    Uthpalani, P. G. I.; De Silva, D. S. M.; Weerasinghe, V. P. A.; Premachandra, J. K. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)
    The accumulation of plastic waste in the environment has emerged as a significant global concern. The versatile properties of plastics, such as low weight, low cost and durability which led to their widespread use as ...
  • Pyrolysis of waste polypropylene to fuel oil 
    Uthpalani, P. G. I.; Premachandra, J. K.; Weerasinghe, V. P. A.; De Silva, D. S. M. (Chemistry in Sri Lanka, 2022)
    Plastic waste accumulation in the environment has increased rapidly. This is mainly due to their versatile properties, which allow them to be used as substitutes for wood, metals, ceramics, and glass. They have diverse ...
  • Sampling and analysis of Microplastics in the coastal area from the Estuary of Kelani River to the Estuary of Mahaoya 
    Weerasekara, P. G. Y. W.; De Silva, D. S. M.; De Silva, R. C. L; Amarathunga, A. A. D. (Faculty of Science, University of Kelaniya Sri Lanka, 2022)
    Plastic particles that are less than 5 mm in dimension are referred to as microplastics (MPs). The formation of MPs can occur either by fragmentation of macroplastics (secondary MPs) or the production of micro-sized plastics ...
  • Selenium content in meals consumed for lunch by Sri Lankans and the effect of cooking on selenium content. 
    Kiridena, K. M. S. D.; De Silva, D. S. M.; Wimalasena, S. (Ceylon Journal of Science, 46(4), 21–25. DOI: http://doi.org/10.4038/cjs.v46i4.7465, 2017)
    The selenium (Se) content in meals consumed by Sri Lankans for lunch, composed of fixed and random menus, was determined using Hydride Generation Atomic Absorption Spectrometer. The samples were obtained from five districts ...
  • ZnS Assisted ZN Doping in CdZnS Electrodeposition 
    Sarathchandra, K. A. D. M. S.; De Silva, D. S. M.; Pathiratne, K. A. S. (Journal of Science 2019, Department of Chemistry, University of Kelaniya, Sri Lanka, 2019)
    Many reports have been published elsewhere on making thin films of cadmium zinc sulphide (CdZnS) using different techniques. This article summarizes a method developed to form CdZnS by incorporating electrodeposited Cd ...

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