Science: Recent submissions

Now showing items 261-280 of 3802

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 ...
In vitro evaluation of antibacterial activity mediated by palmyra pulp and sprout silver-zinc oxide nanocomposites

Aththanayake, A. M. S.; Thiripuranatha, G.; Ekanayake, S. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

Pathogenic bacterial resistance to antibiotics has become a significant barrier to the accurate identification and treatment of infectious diseases. To address this challenge, there is a high demand for new chemical ...
Development and validation of an analytical method to detect Monosodium Glutamate in food samples and analysis of MSG in selected Sri Lankan food products

Sithumini, D. D.; Pandithavidana, D. R.; Thambavita, T. M. D. D. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

Monosodium glutamate (MSG) is a synthetic flavour enhancer commonly used in the food industry, even though it comes from a natural source. Although MSG is commonly utilized as a food additive to improve taste, it has been ...
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 ...
In vivo and in silico analysis of inhibition of rice (Oryza sativa) bran lipase with guava leaf (Psidium guineense swartz) extract

Sooriyawansha, A. M. S. C.; Munaweera, R.; Jayathilaka, N.; Seneviratne, K. N. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

Rice (Oryza sativa) bran (RB) is one of the most important co-products in the rice milling industry. It is frequently utilized in animal feed or discarded as waste. After milling, the majority of RB cells are ruptured, and ...
Investigating the effect of climate factors on dengue incidence in Kandy, Sri Lanka

Madhumali, H. A. N.; Varathan, N. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

Dengue, a mosquito-borne disease, poses significant public health challenges in tropical and subtropical regions globally. About two-thirds of the world’s population live in areas infected with dengue. It is one of the ...
Enhancing optical flow for a smoother identification of global motion

Algama, C. R.; Sandaruwan, K. D. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

In the domain of computer vision, optical flow stands as a cornerstone for unravelling dynamic visual scenes. However, the challenge of accurately estimating optical flow under conditions of large displacement remains an ...
QUBO formulation of the closest string problem

Dissanayake, D. M. C. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

The closest string problem is an NP-complete problem which appears more commonly in bioinformatics and coding theory. From a theorist’s point of view, more interesting applications are found in automata theory, specifically ...
A machine learning approach to predict profitable vegetable crop and land requirements in Sri Lankan agriculture

Nethmini, S. A. H.; Weerakoon, W. A. C. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

More than 80% of the Sri Lankan population depends on agriculture as their livelihood. The main challenges in the agriculture sector are how to select profitable vegetable crops, reduce excess vegetable stocks, and minimise ...
Embedded scoring methodology for the self - Assessment of the privacy and security concerns in telemedicine systems in Sri Lanka

Siriwardhana, V. T. N. S.; Mallikarachchi, P. S.; Vidanagamachchi, S. M. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

Telemedicine, a subset of telehealth, has garnered increasing attention for its potential to transform healthcare delivery. This analysis was undertaken with the goal of developing an embedded scoring system for a ...
Capturing sentence-level positional data into N-gram profiles for document classification

Gunasekara, L. M. S.; Premadasa, H. K. S. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

Document classification is a crucial aspect in natural language processing with a wide range of applications in various domains such as email spam filtering, hate speech detection, political bias assessment, etc. While ...
Real-time system for place recognition by interpreting Sri Lankan sign language into text using machine learning approach.

Perera, J. D. K. N.; Kumarika, B. M. T. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

Sri Lankan sign language (SSL) serves as a vital visual-gestural communication system for the deaf community in Sri Lanka. However, effective communication between hearing-impaired individuals and the general population ...
Enhancing usability in learning management systems: Exploring future prospects with virtual assistants

Dushyanthika, G. P.; Hewapathirana, I. U. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

In Sri Lankan universities, the Learning Management System (LMS) plays a major role in online program content development and management. Amidst the COVID-19 crisis, Sri Lankan university students had to rely heavily on ...
Machine learning model to predict bank customer's next expenditure with relevant merchant category

Umayanga, A. M. K. H.; Dissanayake, D. M. L. M. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

The banking industry's increasing reliance on debit card transactions has generated a wealth of valuable data for understanding consumer behaviour. This study aims to develop a machine learning model to predict a customer's ...
Optimising the power generation cost of microgrids using genetic algorithms - An analysis of the impact of crossover and mutation rates

De Silva, S. S. K. A (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

This study focuses on optimising microgrid costs, with a particular emphasis on the influence of crossover and mutation rates by applying genetic algorithms. As the demand for decentralised energy solutions in isolated and ...
The effect of food commodity price fluctuation on inflation in Sri Lanka

Nadeekantha, H. A. D. D.; Lakshitha, W. A. D. M.; Lakshitha, W. A. D. M.; Chandrasekara, N. V. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

In Sri Lanka, the intersection of inflation and food price fluctuations holds profound significance, affecting not only the nation's economic stability but also the daily lives of its citizens. While existing research has ...
Development of sand/graphene composite and its application for MCPA pesticide adsorption from water

Perera, W. P. R. T.; Ruwanthi, N.M.N; Perera, P. L. R. A.; Kannangara, Amila; Premarathna, W.A.P.J; Liyanage, J. A.; Kumarasinghe, A. R. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

This research endeavours to synthesize a novel adsorbent, sand/graphene oxide composite (MGO/S), achieved through the iterative deposition of graphene oxide layers on river sand employing a thermal annealing process. ...
A complex sample design based analysis of determinants of secondary job holding of heads of households in Sri Lanka

Pannala, P. A. H. S.; Deshani, K. A. D. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

Heads of Households (HHs’) play the most prominent role in families. This study was mainly focused on HHs’ who were engaged in secondary jobs (SJ) in Sri Lanka. Exploring methods and techniques of incorporating complex ...
Numerical solutions of fuzzy differential equations using higher order methods

Kumara, H. H. D.; Perera, B. B. U. P. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

Fuzzy differential equations (FDEs) are useful for modelling real-world problems in science and engineering and have been studied by many researchers. Fuzzy solutions are required for certain problems due to the inherent ...
Selection of best fitting mathematical model to analyse the anthracene degradation ability of Bacillus velezensis

Madushika, S. A. R. R.; Munasinghe, J.; Undugoda, L. (Faculty of Science, University of Kelaniya Sri Lanka, 2023)

Living things frequently come into contact with a wide range of harmful pollutants, including polyaromatic hydrocarbons (PAHs) like anthracene, which are highly carcinogenic and genotoxic. Microbial degradation is the most ...

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