Faculty of Science: Recent submissions

Now showing items 41-60 of 655

Solar Energy for sustainable development in developing countries

Ravirajan, P. (2017)

Sustainable development is the important gift that we can leave for our future generations. It is of vital importance to develop different types of renewable energy sources including solar, wind, hydro, biomass, geothermal ...
Recent Progress and Approaches on Transition Metal Chalcogenides for Hydrogen Production

Shanmugaratnam, S.; Yogenthiran, E.; Koodali, R.; Ravirajan, P.; Velauthapillai, D.; Shivatharsiny, Y. (Energies, 2021)

Development of efficient and affordable photocatalysts is of great significance for energy production and environmental sustainability. Transition metal chalcogenides (TMCs) with particle sizes in the 1–100 nm have been ...
Polymer/Fullerene Blend Solar Cells with Cadmium Sulfide Thin Filmas an Alternative Hole-Blocking Layer

Thanihaichelvan, M.; Loheeswaran, S.; Balashangar, K.; Velauthapillai, D.; Ravirajan, P. (Polymers, 2019)

In this work, chemical bath-deposited cadmium sulfide (CdS) thin films were employed as an alternative hole-blocking layer for inverted poly(3-hexylthiophene) (P3HT) and phenyl-C61-butyric acid methyl ester (PCBM) bulk ...
Floating Microplastics in Northern Coastal Waters of Sri Lanka: Quanti cation and Characterization by FTIR

Shobiya, G.; Sivashanthini, K.; Einar, G.B.; Deeptha, A. (Sciencesconf.org, 2022)

Microplastic (MP) pollution is a growing issue in Sri Lanka. However, few ndings have been reported in the Northern coastal belt of Sri Lanka. This study provides the rst evidence of the prevalence and abundance of MPs ...
A study on mass accumulation of macrophytes in Northern and Eastern coast of Srilanka

Thapeetha, Y.; Saruga, K.; Uventhikka, S.; Sivagini, K.; Ragavan, N.; Nahmagal, K.; Shobiya, P.; Khalingarajah, H.; Sivashanthini, K.; Sutharshiny, S. (Asian fisheries society, 2022)

The coastal areas in Northern and Eastern part of Srilanka became an eyesore on 8th November 2021 with unprecedented amount of macrophytes piled upon the beaches. A survey was carried out to identify and analyze the ...
Variations in salinity tolerance of malaria vectors of the Anopheles subpictus complex in Sri Lanka and the implications for malaria transmission

Surendran, S.N.; Jude, P.J.; Ramasamy, R. (Bio Med Central, 2011)

Background: Anopheles subpictus sensu lato, a widespread vector of malaria in Asia, is reportedly composed of four sibling species A-D based on distinct cytogenetic and morphological characteristics. However An. subpictus ...
Use of tilapia, Oreochromis mossambicus, for the control of mosquito breeding in water storage tanks in the Jaffna district of Sri Lanka

Surendran, S.N.; Kajatheepan, A.; Jude, P. J.; Ramasamy, R. (The Japanese Society of Tropical Medicine, 2008)

Mosquito-borne diseases such as dengue, chikungunya and malaria are of public health importance in Jaffna district. The use of larvivorous fish is perceived as an environmentally sound measure to control mosquitoes. A ...
The Anopheles culicifacies and An subpictus species complexes in Sri Lanka and their implications for malaria control in the country

Surendran, S.N.; Ramasamy, R. (The Japanese Society of Tropical Medicine, 2010)

Anopheles culicifacies, the major vector of malaria in Srilanka, and An.subpictus, a secondary vectory, exist as species complexes in the country. Among the globally reported five sibling species(A-E) of the An.culicifacies ...
Socio-environmental factors and sandfly prevalence in Delft Island, Sri Lanka: implications for leishmaniasis vector control

Surendran, S.N.; Kajatheepan, A.; Ramasamy, R. (J VECT BORNE, 2007)

Sri Lanka was free of any form of leishmaniasis until recently. The first autochthonous case of cutaneous leishmaniasis (CL) was only detected in 19921. By the year 2002, 65 cases, mainly from northern dry zone, were ...
Seasonality and insecticide susceptibility of Dengue vectors: an ovitrap based survey in a Residential area of northern sri lanka

Surendran, S.N.; Kajatheepan, A.; Sanjeefkumar, K.F.A.; Jude, P.J. (OVITRAP SURVEY OF DENGUE VECTORS IN JAFFNA, 2007)

With the backdrop of a high incidence of dengue in Jaffna District, Sri Lanka, an ovitrap based survey was carried out from May 2005 to April 2006 in a residential area to study the seasonality and insecticide susceptibility ...
Pre-imaginal development of Aedes aegypti in brackish and fresh water urban domestic wells in Sri Lanka

Surendran, S.N.; Jude, P.J.; Thabothiny, V.; Raveendran, S.; Ramasamy, R. (Journal of Vector Ecology, 2012)

There is a long and widely held view that Aedes aegypti (Linnaeus) and Ae. albopictus Skuse (Diptera: Culicidae), the principal mosquito vectors of arboviruses causing yellow fever, dengue, and chikungunya, oviposit and ...
Larval Development of Aedes aegypti and Aedes albopictus in Peri-Urban Brackish Water and Its Implications for Transmission of Arboviral Diseases

Ramasamy, R.; Surendran, S.N.; Jude, P.J.; Dharshini, S.; Vinobaba, Muthuladchumy (PLoS, 2011)

Aedes aegypti (Linnaeus) and Aedes albopictus Skuse mosquitoes transmit serious human arboviral diseases including yellow fever, dengue and chikungunya in many tropical and sub-tropical countries. Females of the two species ...
Karyotypic assignment of Sri Lankan Anopheles culicifacies species B and E does not correlate with cytochrome oxidase subunit I and microsatellite genotypes

Surendran, S.N.; Truelove, N.; Sarma, D.K.; Jude, P.J.; Ramasamy4, R.; Gajapathy, K.; Peiris, L.B.S.; Parakrama Karunaratne, S.H.P.; Walton, C. (Parasites & Vectors, 2015)

The identification of species B and E in the Anopheles culicifacies complex in the Indian subcontinent has been based on Y-chromosome karyotype. Since no detectable variations were previously found in DNA markers commonly ...
Insecticide resistance in mosquitoes: Development, mechanisms and monitoring

Parakrama Karunaratne, S.H.P.; Priyanka P. De Silva1, W.A.; Weeraratne, T.C.; Surendran, S.N. (2018)

Mosquito-borne diseases are of major public health concerns, mainly in tropical countries. Control of these diseases is primarily achieved through mosquito control. One of the major challenges encountered by mosquito control ...
Impact of salinization and pollution of groundwater on the adaptation of mosquito vectors in the Jaffna peninsula, Sri Lanka

Surendran, S.N.; Senthilnanthanan, M.; Jayadas, T.T.P.; Karunaratne, S.H.P.P.; Ramasamy, R. (2020)

Mosquito-borne diseases are a major health concern in many tropical and sub-tropical countries. In the absence of specific treatment for many mosquito-borne diseases, vector control in the form of eliminating preimaginal ...
Potential risk areas for dengue in the Jaffna Municipal Area in Northern Sri Lanka

Kannathasan, S.; Suthakar, K.; Jude, P. J.; Surendran, S.N. (J.Natn.Sci.Foundation Sri Lanka, 2013)
First report on the presence of morphospecies A and B of Phlebotomus argentipes sensu lato (Diptera: Psychodidae) in Sri Lanka – implications for leishmaniasis transmission

Surendran, S.N.; Kajatheepan, A.; Hawkes, N.J.; Ramasamy, R. (J Vect Borne Dis 42, 2005)

Phlebotomus argentipes Annandale and Brunetti (Diptera : Psychodidae) is the major Indian vector of visceral leishmaniasis (VL), caused by Leishmania donovani. However, whilst the geographic range of P. argentipes ...
Possible impact of rising sea levels on vector-borne infectious diseases

Ramasamy, R.; Surendran, S.N. (Bio Med Central, 2011)

Background: Vector-borne infectious diseases are a significant cause of human and animal mortality and morbidity. Modeling studies predict that changes in climate that accompany global warming will alter the transmission ...
First record of the presence of Aedes (Phagomyia) cogilli (Edwards, 1922) in Sri Lanka

Jayadas, T.T.P.; Thiruchenthooran, V.; Tharsan, A.; Sivabalakrishnan, K.; Santhirasekaram, S.; Surendran, S.N. (J.Natn.Sci.Foundation Sri Lanka, 2020)

Sri Lanka is known for its biological diversity with a high richness in insect diversity. So far, 159 mosquito species representing 19 genera have been reported. Phagomyia gubernatori is the only species identifi ed ...
Population genomics reveals that an anthropophilic population of Aedes aegypti mosquitoes in West Africa recently gave rise to American and Asian populations of this major disease vector

Crawford, J.E.; Alves, J.M.; Palmer, W.J.; Day, J.P.; Sylla, M.; Ramasamy, R.; Surendran, S.N.; Black IV, W.C.; Pain, A.; Jiggins, F. (Bio Med Central, 2017)

Background: The mosquito Aedes aegypti is the main vector of dengue, Zika, chikungunya and yellow fever viruses. This major disease vector is thought to have arisen when the African subspecies Ae. aegypti formosus evolved ...

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