Faculty of Science: Recent submissions

Now showing items 121-140 of 656

Machine Learning Approach Regarding the Classification and Prediction of Dog Sounds: A Case Study of South Indian Breeds

Mohandas, P.; Anni, J.S.; Hasikin, K.; Velauthapillai, D.; Raj, V.; Murugathas, T.; Azizan, M.M.; Thanasekaran, R. (MDPI, 2022)

Barking is a form of vocal communication made by dogs. Each type of bark made by dogs has a distinct context. The classification of dog bark pattern will aid in the understanding of barking action. In this study, a machine ...
Impact of leaf spot disease on beetroot production in Jaffna peninsula, Sri Lanka

Nivetha, S.; Christy Jeyaseelan, E. (Taylor & Francis Group, 2022)

The present study focuses on the aetiology of leaf spot disease and its impact on beetroot production in the Jaffna peninsula. A survey and field study was carried out to under stand present status of the disease. The ...
Highly-fluorinated Triaminocyclopropenium Ionic Liquids

Curnow, O.J.; Rathiga, S. (Asian Chemical Editorial Society, 2022)

A series of highly-fluorinated triaminocycloprope nium salts, with up to six fluorous groups, were prepared and their properties as ionic liquids investigated. Reaction of pentachlorocyclopropane or tetrachlorocyclopropene ...
Defect Properties of Li2NiGe3O8

Kuganathan, N.; Raveena, S.; Iyngaran, P. (MDPI, 2022)

There is a growing interest in finding a suitable electrolyte material for the construction of rechargeable Li-ion batteries. Li2NiGe3O8 is a material of interest with modest Li-ionic conductivity. The atomistic simulation ...
Characterization and Sintering Properties of Hydroxyapatite Bioceramics Synthesized from Clamshell Biowaste

Chui Kim, N.; Sara Lee, K.; Chin Hong, T.; Ramesh, S.; Chen Hunt, T.; Chuah, Y.D.; Chou Yong, T.; Sutharsini, U. (IIUM Engineering Journal, Vol. 23, No. 2, 2022, 2022)

Hydroxyapatite (HA) is a type of calcium phosphate-based bioactive ceramic that resembles the mineral phase of bone and teeth with great potential for bone substitution and biomedical implants. Biogenic-derived HA ...
Bimetallic AC/Ag2CrO4/SnS heterostructure photoanode for energy conversion and storage: A self-powered Photocapacitor

Kajana, T.; Pirashanthan, A.; Yuvapragasam, A.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. (Elsevier, 2022)

The worldwide increase in generation of solar based electricity prompts the essentiality of research efforts on the development of energy storage systems. In this regard, self-powered photocapacitors are of keen interest ...
An effective technique for the conformable space-time fractional cubic-quartic nonlinear Schr¨odinger equation with different laws of nonlinearity

Mathanaranjan, T. (Computational Methods for Differential Equations, 2022)

In the present study, we investigate the conformable space-time fractional cubic-quartic nonlinear Schr¨odinger equation with three different laws of nonlinearity namely, parabolic law, quadratic-cubic law, and weak ...
Air processed Cs2AgBiBr6 lead‑free double perovskite high‑mobility thin‑flm feld‑efect transistors

Abiram, G.; HeidariGourji, F.; Pitchaiya, S.; Ravirajan, P.; Murugathas, T.; Velauthapillai, D. (Scientifc Reports, 2022)

This study focuses on the fabrication and characterization of Cs2AgBiBr6 double perovskite thin flm for feld-efect transistor (FET) applications. The Cs2AgBiBr6 thin flms were fabricated using a solution process technique ...
Abundance and distribution of microplastics in surface waters of the Kattegat/ Skagerrak (Denmark)

Gunaalan, K.; Almeda, R.; Lorenz, C.; Vianello, A.; Iordachescu, L.; Papacharalampos, K.; Rohde Kiar, C.; Vollersten, J.; Nielsen, T.G. (Elsevier, 2022)

Microplastics (MPs) are ubiquitous pollutants in the ocean, and there is a general concern about their persistence and potential effects on marine ecosystems. We still know little about the smaller size-fraction of marine ...
Vulnerability of land use/cover associated with human-wildlife conflicts in Mullaitivu District, Sri Lanka

Bharathy, P.; Wijeyamohan, S.; Suthakar, K.; Surendran, S.N. (Taylor & Francis Group, 2022)

Human-wildlife conflict has increased over the decades and is now considered one of the most severe challenges to the survival of threatened species and the livelihood of communities world wide. In Sri Lanka, population ...
Genetic diversity of Phlebotomus (Euphlebotomus) argentipes species complex in Sri Lanka

Sharmintha, P.; Gajapathy, K.; Amarasinghe, A.A.K.P.; Surendran, S.N. (Ceylon Journal of Science, 2022)

Leishmaniasis has been recognized in Sri Lanka for many years and is becoming a serious public health threat. Sandflies, the known vector of leishmaniasis, are also found throughout the country. The presence of a ...
Dengue Incidence and Aedes Vector Collections in Relation to COVID-19 Population Mobility Restrictions

Surendran, S.N.; Nagulan, R.; Tharsan, A.; Kokila, S.; Ranjan, R. (Tropical Medicine And Infectious Disease Journal, 2022)

Contrary to expectation, dengue incidence decreased in many countries during the period when stringent population movement restrictions were imposed to combat COVID-19. Using a sea sonal autoregressive integrated moving ...
Molecular identification of potential leishmaniasis vector species within the Phlebotomus (Euphlebotomus) argentipes species complex in Sri Lanka

Gajapathy, K.; Peiris, L.B.; Goodacre, S.L.; Silva, A.; Jude, P.J.; Surendran, S.N. (BioMed Central Ltd, 2013)

Background: Leishmaniasis is an emerging vector-borne disease in Sri Lanka. Phlebotomus (Euphlebotomus) argentipes sensu lato Annandale and Brunette 1908 is suspected to be a potential vector. Three sibling species have ...
Molecular and biochemical characterization of a sand fly population from Sri Lanka: Evidence for insecticide resistance due to altered esterases and insensitive acetylcholinesterase

Surendran, S.N.; Karunaratne, S.H.P.P.; Adams, Z.; Hemingway, J.; Hawkes, N.J. (CAB International, 2005)

With an increasing incidence of cutaneous leishmaniasis in Sri Lanka, particularly in northern provinces, insecticide-mediated vector control is under consideration. Optimizing such a strategy requires the characterization ...
Description of sandfly (diptera: Psychodidae: Phlebotominae) species from genus Sergentomyia (Franca and parrot, 1920) in Sri Lanka

Gajapathy, K.; Surendran, S.N. (Academic Journals Inc, 2012)

Leishmaniasis, mainly Cutaneous Leishmaniasis (CL), is a major public health concern in Sri Lanka. Although, the vector for any form of the disease is yet to be clearly discriminated in the country, a limited study reported ...
Some aspects on the feeding of Gerres oblongus (Cuvier, 1830) dwelling from the Jaffna lagoon

Abyerami, B.; Sivashanthini, K. (Asian Network for Scientific Information, 2008)

A total of 179 fishes of Gerres oblongus (Cuvier, 1830) ranging in standard length 40 to 169 mm were collected in the morning from four collection sites in tire Jaffna lagoon. The stomach contents were assessed qualitatively ...
Molecular characterization and identification of members of the Anopheles subpictus complex in Sri Lanka

Surendran, S.N.; Sarma, D.K.; Jude, P.J.; Kemppainen, P.; Kanthakumaran, N.; Gajapathy, K.; Peiris, L.B.; Ramasamy, R.; Walton, C. (BioMed Central Ltd, 2013)

Background: Anopheles subpictus sensu lato is a major malaria vector in South and Southeast Asia. Based initially on polytene chromosome inversion polymorphism, and subsequently on morphological characterization, four ...
Anopheles culicifacies Y-chromosome dimorphism indicates sibling species (b and e) with different malaria vector potential in Sri Lanka

Surendran, S.N.; Abhayawardana, T.A.; De Silva, B.G.D.N.K.; Ramasamy, R.; Ramasamy, M.S. (2000)

In Sri Lanka, malaria is transmitted mainly by Anopheles culicifacies Giles sensu lato (Diptera: Culicidae). In India, this nominal taxon comprises sibling species A, B, C, D and E, distinguished by their chromosome ...
Molecular evidence for the presence of malaria vector species a of the Anopheles annularis complex in Sri Lanka

Surendran, S.N.; Gajapathy, K.; Kumaran, V.; Tharmatha, T.; Jude, P.J.; Ramasamy, R. (BioMed Central Ltd, 2011)

Background: Anopheles annularis s.l. is a wide spread malaria vector in South and Southeast Asia, including Sri Lanka. The taxon An. annularis is a complex of two sibling species viz. A and B, that are differentiated by ...
Genetic evidence for malaria vectors of the Anopheles sundaicus complex in Sri Lanka with morphological characteristics attributed to Anopheles subpictus species B

Surendran, S.N.; Singh, O.P.; Jude, P.J.; Ramasamy, R. (BioMed Central Ltd, 2010)

Background: Anopheles subpictus sensu lato, a widespread malaria vector in Asia, is reportedly composed of four sibling species A - D. Mosquitoes morphologically identified as belonging to the Subpictus complex were collected ...

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