E-Repository - South Eastern University of Sri Lanka: Recent submissions

  • Absolute stability of runge-kutta method 
    Komathiraj, K.; Marasinghe, M. M. J. P. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    The Runge-Kutta method is a popular method for solving initial value problem. It is most accurate and stable method. It arise when Leonhard Euler have made improvements on Euler method to produce Improved Euler method. ...
  • Enhancing salt tolerance ability of selected rice varieties using ascorbic acid and nicotinamide 
    Pramodika, S. M. L.; Safeena, M. I. S. (Enhancing salt tolerance ability of selected rice varieties using ascorbic acid and nicotinamide, 2022-11-15)
    Total agricultural land of the globe becomes insufficient due to the progressive nature of primary and secondary salinity. High salt content in the irrigation water or soil is a serious restriction factor to the cultivation ...
  • Screening for cellulose utilizing efficiency of bacteria isolated from different natural sources by enrichment with different lignocellulose substrates 
    Dissanayake, R. M. G. K.; Rizvi, E. M. J. M. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai, 2022-11-15)
    Lignocellulose is a promising feedstock to produce biofuels and other biobased products and it is the most abundant sustainable and economical alternative to fossil resources. It is the sole source of some of these ...
  • Preliminary evaluation of toxicity of a binary mixture of cadmium and chromium on zebrafish embryo 
    Thomas, I. B. K.; Abeysinghe, D. T.; Senthilnithy, R.; Chanika, D.Jayasinghe (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai, 2022-11-15)
    Heavy metals like cadmium (Cd) and chromium (Cr) exert toxic effects on aquatic vertebrates such as fish and amphibians. The present study employed a zebrafish embryo toxicity model to detect the toxic effects of a binary ...
  • Anisotropic charged stellar models via Bessel differential equation 
    Subasinghe, H. P. I.; Komathiraj, K. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    Several new families of exact solution to the Einstein-Maxwell system of differential equations for a spherically symmetric relativistic fluid sphere matched to the exterior Reissner–Nordström space–time are found for ...
  • An analytical study on radical theory in rings - a review 
    Arulnandhy, S.; Liyanage, M. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    Radical theory in rings is regarded as a major theoretical concept that specifies certain classical structure theorems for rings, enhancing profound understanding of the key aspects of ring theory. Radical theory has ...
  • Numerical solution and stability analysis of one-dimensional heat equation 
    Zathiha, M. M.; Faham, M. A. A. M. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    In a variety of scientific domains, the heat equation has many fundamental importance. Heat is a type of energy that can be found in any substance. The physical phenomena of the one-dimensional heat equation were ...
  • Fourth order perturbed Heisenberg Hamiltonian of bcc structured ferromagnetic thin films with three spin layers 
    Farhan, M. S. M.; Samarasekara, P. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    The solution of fourth order perturbed Heisenberg Hamiltonian of bcc structured ferromagnetic ultra-thin films with three spin layers with all seven magnetic energy parameters were investigated. All the magnetic energy ...
  • Line integrals through higher degree Taylor polynomial approximation 
    Abdul Rauf, M. A. C.; Faham, M. A. A. M. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    Integration is one of the basic operation in mathematical calculus. It occurs in almost all physical situations where the variable is continuous function of one or more continuous independent variables. When the function ...
  • Development of a seawater intrusion model for the Kalpitiya coastal aquifer in Sri Lanka 
    Sudesh, K. H. M.; Samaraweera, M. D. S.; Attanayake, A. M. A. N. B. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    Seawater intrusion is the influx of saline water into freshwater aquifers leading to groundwater quality degradation. The Kalpitiya Coastal Aquifer (KCA) of Sri Lankan is a limestone aquifer and its’ adjacent groundwater ...
  • A Chebyshev collocation method for solving ordinary linear differential equations with variable coefficients 
    Mohamed Althaf, U. L.; Faham, M. A. A. M (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    Differential equations are frequently used to describe continuous-time dynamical system. Not all differential equations can be solved analytically, so several techniques have been developed to find approximate solutions. ...
  • A sir model for analyzing the impact of covid-19 vaccinations in Sri Lanka 
    Fathima Maheesha, A. J.; Faham, M. A .A. M. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    The world has been gripped by Corona pandemic since 2019. In Sri Lanka, the first case of COVID-19 was reported late January 2020 and that was a Chinese nationalist the first local case was identified in the second week ...
  • Exact relativistic stellar models via Hypergeometric differential equation 
    Wickramarathna, H. N. P.; Komathiraj, K. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    We find new classes of exact solutions to the Einstein-Maxwell system of equations for a charged and anisotropic sphere with a particular choice of the electric field intensity, anisotropic factor and one of the gravitational ...
  • Optimal signal timing for an oversaturated arterial intersection at road networks 
    Yogeswary, Raviraj; Kumara, R. A. D. S. M. U. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    Traffic congestion occurs frequently at downtown intersections during rush hours, at road construction zones as well as at accident sites. Under such circumstances, traffic flow exceeds intersection capacity causing ...
  • Linear stability analysis of more general linear iteration scheme in the implementation of implicit runge kutta methods 
    Kajanthan, S. (Faculty of Applied Sciences, South Eastern University of Sri Lanka, Sammanthurai., 2022-11-15)
    more general linear iterative scheme solves non-linear equations arising in the implementation of implicit Runge-Kutta methods proposed by Cooper and Butcher is of the form where B and S are real non-singular matrices ...
  • Effective removal of heavy metals from aqueous solutions by cost-effective adsorbents 
    Rajapaksha, R. M. H. Y.; Gunawardene, O. H. P.; Gunathilake, C. A.; Farhath, M. N. M. (Young Scientists’ Association, National Institute of Fundamental Studies, Sri Lanka, 2022-11-10)
    Heavy metals are detrimental to human health and the environment with, negative consequences. Such as kidney and nervous system disorders, and for plants; inhibition of photosynthesis. Thus, efficient strategies must ...
  • Utilization of differently activated charcoal from coconut shells (C. nucifera) for textile dye adsorption 
    Rajapaksha, R. M. H. Y.; Nawas, M. F.; Farhath, M. N. M. (Young Scientists’ Association, National Institute of Fundamental Studies, Sri Lanka, 2022-11-10)
    Dye effluents released from numerous dye-utilizing industries are toxic and carcinogenic to both aquatic life and human beings. Before discharging, dye wastewater should be treated to minimize its harmful effects on ...
  • Synthesis and characterization of bismuth oxoiodide-sensitized TiO2 electrodes for solar energy conversion 
    Madhumekala, M. A. K.; Shyamamala, M. G. R.; Wijewardhana, G. D. M. H.; Kandanapitiye, M. S.; Jaseetharan, T.; Farhath, M. N. M. (Young Scientists’ Association, National Institute of Fundamental Studies, Sri Lanka, 2022-11-10)
    Bismuth Oxyiodide (BiOI) has recently gained considerable attention as a non-toxic sensitizing material in the solar energy conversion process. Usually, in dye-sensitized solar cells, Ru-based dyes are used as sensitizers ...
  • The trend of fertilizer usage by paddy farmers in Ampara district, Sri Lanka 
    Asmath, A. M. M.; Nashath, M. N. F. (Young Scientists’ Association (NIFS-YSA), National Institute of Fundamental Studies, 2022-11-10)
    Paddy farmers have abandoned the systematic method of fertilizer application and inappropriate usage of fertilizers has challenged human and environmental health. Hence, it is vital to comprehend the trend of fertilizer ...
  • Temporal variations of selected surface water quality parameters and pollution status of Batticaloa lagoon – A review 
    Nashath, M. N. F.; Asmath, A. M. M.; Rishadha, M. R. F. (Young Scientists’ Association (NIFS-YSA), National Institute of Fundamental Studies, 2022-11-10)
    Batticaloa lagoon is an economically important ecosystem on the East Coast of Sri Lanka. It is surrounded by densely populated areas, rice and coconut plantations, as well as fish and shrimp farms. Large-scale rapid ...