Faculty of Science: Recent submissions

Now showing items 321-340 of 655

Salinity variations in surface water systems in delft island sri lanka

Sivashanthini, K.; Gunaalan, K.; Harichandra, K.; Sutharshiny, S.; Warnasuriya, T.W.S.; Ragavan, N. (University of Jaffna, 2019)

The present study was carried out to identify the locations and salinity variations of surface water systems in Delft Island. Regular field visits were made from January 2016 to January 2017, GPS locations for all water ...
Impacts of barrage construction on socio – economic status of fishers in thondaimanaru lagoon, jaffna, sri lanka

Shobiya, P.; Sivashanthini, K.; Sutharshiny, S.; Gunaalan, K. (University of Jaffna, 2018)

Present study was conducted to determine the impacts of barrage construction on livelihood status of fishers who involve fishing in Thondaimanaru lagoon. The data related to the socio economic condition of the fisher ...
Ecological footprints for aquaculture possibility in selected mangrove regions

Saruga, S.; Sivashanthini, K.; Gunaalan, K.; Sutharshiny, S. (University of Jaffna, 2018)

The present study was carried out to analyze the possibility of aquaculture in selected mangrove regions in Jaffna, Sri Lanka. A detailed study on the possibility of aquaculture was carried out in Sarasaalai (L1) and ...
Status of the fishery of Jaffna lagoon, Sri Lanka

Ragavan, N.; Dissanayake, D.C.T.; Kuganathan, S. (University of Jaffna, 2021)

Jaffna lagoon (9° 50' N and 79° 50' E to 9° 20' N and 80° 30' E) is the largest lagoon in Sri Lanka and it provides many services including fishing opportunities to the people in northern Sri Lanka. However, the status ...
Socio-economic status of fishers in Allaipiddy village, Jaffna

Ragavan, N.; Sivashanthini, K.; Sutharshiny, S. (University of Jaffna, 2016)

The present study was carried out in Allaipiddy for a period of eight months from June 2014 to January 2015. The socio-economic data of randomly selected 53 fishermen was obtained through pre-tested structured questionnaire, ...
Contribution of Women in Fisheries and Fishery Related Activities in Ponnalai, Jaffna, Sri Lanka

Nilakshana, K.; Shobiya, P.; Dilini, J.G.B.D.; Ragavan, N.; Sivashanthini, K.; Sutharshiny, S. (University of Jaffna, 2021)

Women’s involvement in fisheries seems to be largely invisible and unacknowledged in Jaffna Peninsula. Thus, the present study was conducted in Ponnalai village to determine the active participation of women in fisheries, ...
The hidden threat of plastic leachates: A critical review on their impacts on aquatic organisms

Gunaalan, K.; Fabbri, E.; Capolupo, M. (University of Jaffna, 2020)

Plastic products are made from the essential polymer mixed with a complex blend of substances includ ing catalyst remnants, polymerization solvents, and a wide range of other additives deliberately added to enhance the ...
Impacts of the Thondaimanaru Barrage Construction on Socio – Economic Status of Fishing Communities in Thondaimanaru Lagoon, Jaffna, Sri Lanka

Shobiya, P.; Sivashanthini, K.; Sutharshiny, S.; Gunaalan, K. (University of Jaffna, 2019)

Present study was conducted to determine the impacts of barrage construction on livelihood status of fishers who involve fishing in Thondaimanaru lagoon. The data related to the socio - economic condition of fishers in ...
Economic Loss of Northern Fishers due to the Poaching Activities of Indian Trawlers

Vithursha, T.; Sivashanthini, K.; Gunaalan, K. (University of Jaffna, 2019)

The present study was carried out to analyze the economic loss of Sri Lankan fishers due to the poaching activities by Indian trawlers. Fishery resources are major livelihoods in South Indian and North Sri Lankan people ...
An overview of a water quality monitoring in water supply scheme: a case study on iron present in groundwater wells in vallipuram, jaffna

Saravanan, S.; Mikunthan, T .; Gunaalan, K. (University of Jaffna, 2015)

Drinking water is one of the basic needs of life and essential for survival. Iron is a harmless element in the groundwater, though sometimes annoying element present in water supplies. Iron is primarily component of ...
Assessment of water quality index of groundwater quality in Chunnakam and Jaffna Town, Sri Lanka

Harshan, S.; Thushyanthy, M.; Gunatilake, J.; Srivaratharasan, T.; Gunaalan, K. (University of Jaffna, 2017)

The Water Quality Index (WQI) is simple tool and compound indicator, aggregates information from several water quality parameters to convey water quality information in single value to planners, policy makers and the ...
An overview of a water quality monitoring in water supply scheme: a case study on iron present in groundwater wells in vallipuram, jaffna

Saravanan, S.; Mikunthan, T .; Gunaalan, K. (University of Jaffna, 2015)

Drinking water is one of the basic needs of life and essential for survival. Iron is a harmless element in the groundwater, though sometimes annoying element present in water supplies. Iron is primarily component of ...
Synthesis of a carboxylic acid-based ruthenium sensitizer and its applicability towards Dye-Sensitized Solar Cells

Pirashanthan, A.; Thanihaichelvan, M.; Mariappan, K.; Velauthapillai, D.; Ravirajan, P.; Shivatharsiny, Y. (University of Jaffna, 2021)

This work reports the synthesis of ruthenium based Ru(bpy)2(dcbpy)(ClO4)2[(bpy)2,2′ -bipyridine;dcbpy = 4,4′ - dicarboxy-2,2′ -bipyridine] (RuC) dye and its application in solid and liquid state Dye-Sensitized Solar Cells ...
Poly-acrylonitrile-based gel-polymer electrolytes for sodium-ion batteries

Vignarooban, K.; Badami, P.; Dissanayake, M. A. K. L.; Ravirajan, P.; Kannan, A. M. (University of Jaffna, 2017)

Research and development activities on sodium ion batteries are becoming prominent in the past few years. Compared to lithium-based batteries, the sodium-based batte ries will be cheaper because of the abundancy of sodium ...
Ruthenium (Ru) doped Titanium Dioxide (P25) Electrode for Dye Sensitized Solar Cells

Rajaramanan, T.; Natarajan, M.; Ravirajan, P.; Senthilnanthanan, M.; Velauthapillai, D. (University of Jaffna, 2020)

In this study, P25-titanium dioxide (TiO2) was doped with ruthenium (Ru) by systematically varying the Ru content at 0.15, 0.30, 0.45 and 0.6 mol%. The synthesized Ru-doped TiO2 nanomaterials have been characterized by ...
Powder Pressed Cuprous Iodide (CuI) as A Hole Transporting Material for Perovskite Solar Cells

Uthayaraj, S.; Karunarathne, D. G. B. C.; Kumara, G. R. A.; Murugathas, T.; Rasalingam, S.; Rajapakse, R. M. G.; Ravirajan, P.; Velauthapilla, D. (2019)

: This study focuses on employing cuprous iodide (CuI) as a hole-transporting material (HTM) in fabricating highly efficient perovskite solar cells (PSCs). The PSCs were made in air with either CuI or 2,20 ,7,70 -Tetraki ...
Ni/N co-doped P25 TiO2 photoelectrodes for efficient Dye-Sensitized Solar Cells

Rajaramanan, T.; Kumara, G.R.A.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. (University of Jaffna, 2021)

This study focuses, synthesising and characterising Ni/N co-doped P25–TiO2 nanostructure electrodes for photovoltaic application. The X-ray diffraction (XRD) patterns confirm the presence of major anatase and minor rutile ...
Single walled carbon nanotube incorporated Titanium dioxide and Poly (3-hexylthiophene) as electron and hole transport materials for perovskite solar cells

Siva, U.; Murugathas, T.; Yohi, S.; Natarajan, M.; Velauthapillai, D.; Ravirajan, P. (University of Jaffna, 2020)

This study focuses on incorporating single wall carbon nanotubes (CNTs) in both electron conducting por ous Titanium dioxide (TiO2) and the hole conducting Poly(3-hexylthiophene) (P3HT) layers in order to enhance the ...
Efficient charge collection in hybrid polymer/TiO2 solar cells using poly(ethylenedioxythiophene)/polystyrene sulphonate as hole collector

Ravirajan, P.; Bradley, D.D.C.; Nelson, J.; Haque, S.A.; Durrant, J.R; Smit, H.J.P.; Kroon, J.M. (University of Jaffna, 2005)
Optimizing Multiwall Carbon Nanotube Weight Ratio for Efficient Charge Transport in Hybrid TiO2 / Polymer Solar Cells

Thivakarasarma, T.; Sumanthiran, P.; Prashanthan, K.; Ravirajan, P. (University of Jaffna, 2017)

This study focuses on enhancing the charge transport in hybrid TiO2/ P3HT solar cells by incorporating Multi Wall Carbon Nanotube (MWCNT) within the nanoporous TiO2 electron transporting layer. We systematically changed ...

Now showing items 321-340 of 655

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