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Now showing items 1-20 of 11406

Predictive Performance of Cardiometabolic Indices for Metabolic Syndrome among Adults in Northern Sri Lanka

Madhurahini, R.; Viveka, M.; Arasaratnam, V.; Kumanan, T. (The Sri Lanka Medical Association, 2026)

Introduction and Objectives: Metabolic syndrome (MetS) raises cardiovascular and Type 2 diabetes risk in South Asia. Simple indices enhance early detection and risk stratification. This study assessed the predictive ...
Deep insight into structural and optoelectronic properties of mixed anion perovskites

Chapa Pamodani Wanniarachchi, W.A.; Eidsvåg, H.; Arunasalam, T.; Ravirajan, P.; Velauthapillai, D.; Vajeeston, P. (IOP Publishing Ltd, 2024)

Here we present the optoelectronic properties of pure inorganic lead-free halide perovskites in the form of Cs2AgBiX6 (X=Br, Cl, F, I) using the density functional theory calculations on cubic phase (Fm 3̅m) and tetragonal ...
Natural sensitizer extracted from Mussaenda erythrophylla for dye‑sensitized solar cell

Rajaramanan, T.; Gourji, F.H.; Elilan, Y.; Yohi, S.; Senthilnanthanan, M.; Ravirajan, P.; Velauthapillai, D. (Springer Nature, 2023)

In this study, a natural dye from the flowers of Mussaenda erythrophylla extracted separately in ethanol and de-ionized water was employed as a photosensitizer in DSSCs. The quantitative phytochemical analyses were ...
Resistance to the larvicide temephos and altered egg and larval surfaces characterize salinity‑tolerant Aedes aegypti

Sivabalakrishnan, K.; Thanihaichelvan, M.; Tharsan, A.; Eswaramohan, T.; Ravirajan, P.; Hemphill, A.; Ramasamy, R.; Surendran, S.N. (Springer Nature, 2023)

Aedes aegypti, the principal global vector of arboviral diseases and previously considered to oviposit and undergo preimaginal development only in fresh water, has recently been shown to be capable of developing in coastal ...
Iodine-free acetonitrile-modified BmimI ionic liquid electrolyte with in-situ triiodide formation for efficient dye-sensitized solar cells

Rajaramanan, T.; Gourji, F.H.; Zhao, Y.; Senthilnanthanan, M.; Ravirajan, P.; Velauthapillai, D. (Springer, 2026)

In this study, an iodine-free 1-butyl-3-methylimidazolium iodide (BmimI) ionic liquid, modified with acetonitrile (AN), was employed as a redox mediator using a facile approach to enhance DSSC performance. The optical ...
A facile impregnation synthesis of Ni-doped TiO2 nanomaterials for dye-sensitized solar cells

Rajaramanan, T.; Velauthapilla, D.; Ravirajan, P.; Senthilnanthanan, M. (Springer, 2023)

This study reports a facile impregnation method for synthesizing Ni-doped TiO2 nanomaterials using P25-TiO2 as a starting material. The as prepared nanomaterials were subjected to structural and optical characterizations ...
Eco-friendly Egyptian blue (CaCuSi4O10) dye for luminescent solar concentrator applications

Rajaramanan, T.; Keykhaei, M.; Gourji, F.H.; Ravirajan, P.; Senthilnanthanan, M.; Frette, O.; Velauthapillai, D. (The Royal Society of Chemistry, 2023)

This study focuses on synthesizing the heavy metal-free ancient Egyptian blue (EB; CaCuSi4O10) dye using a facile ceramic method for luminescent solar concentrator (LSC) application. XRD, SEM and EDX results confirmed ...
Enhanced solar energy harvest in dye-sensitized solar cells using silver-doped TiO2 Photoelectrodes via Spray Pyrolysis

Sritharan, P.; Senthilnanthanan, M.; Ravirajan, P.; Velauthapillai, D.; Asoka Kumara, G.R.; Palanisamy, B. (Elsevier, 2025)

This study focuses on doping TiO2 with trace amounts of Ag⁺ ions, employing spray pyrolysis to prepare the Agdoped TiO2 photoelectrode for application in Dye-Sensitized Solar Cells (DSSCs). In this regard, Ag-doped ...
Active carbon derived from rice husk as sustainable substitutes for costly platinum electrodes in dye-sensitized solar cells

Weerasinghe, M.I.U.; Kumarage, P.M.L.; Amarathunga, I.G.K.D.; Bandara, T.M.W.J.; Velauthapillai, D.; Karunarathne, B.C.; Ravirajan, P.; Rajapakse, R.M.G.; Kumara, G.R.A. (Elsevier, 2024)

Significant financial and environmental challenges are associated with using platinum electrodes as counter electrodes (CEs) in dye-sensitized solar cells (DSCs). This work uses rice husk, an agricultural waste, to ...
In-vitro Antioxidant Activity of Methanol Extract of Medicinal Herbals Used in Athiyathi Kashayam: A Siddha Polyherbal Formulation

Devappriya, B.T.M.; Sameem, M.L.M.; Ilham, F.M.; Sivasinthujah, S.; Sivarangini, S. (Faculty of Allied Health Sciences, University of Ruhuna Eastern University, Sri Lanka, 2025)

Antidiabetic drugs possess antioxidant properties that help to manage diabetic complications associated with oxidative stress. Athiyathi Kashayam (AK) is a polyherbal formulation consisting of Ficus racemosa, Syzygium ...
Antimicrobial Effects of Aqueous Seed Extract of Strychnos potatorum

Kalaichelvi, S.; Thavaranjit, A.C.; Tharmila, S.; Sivarangini, S. (University of Colombo Rajagiriya, Sri Lanka, 2013)

Biologically active compounds in plant extracts play an important role in herbal medicine through their antimicrobial properties. Strychnus potatorum belongs to the family Loganiaceae. Seeds are alterative tonic, stomachic, ...
Physical, physicochemical and preliminary phytochemical analysis of siddha poly herbal drugs used for treating diabetes mellitus in Northern province, Sri Lanka

Merin Dinushiya, J.; Nilanusha, S.; Sugansika, M.; Sivasinthujah, S.; Sivarangini, S.; Ravimannan, N. (Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, 2025)

The Siddha system of medicine uses natural herbal products for the treatment of Diabetes Mellitus (DM). In Northern Province, Sri Lanka Madhumeha chooranam, Neerizhivu chooranam 1 and Neerizhivu chooranam 2 are famously ...
Ethnobotanical study of the medicinal plants used for rheumatological disorders among patients attending rheumatology clinic in Teaching Hospital Jaffna

Christina, T.; Sathya, S.; Sivasinthujah, S.; Sivarangini, S. (University of Sri Jayewardenepura, 2026)

Background: Rheumatological disorders, are common chronic conditions that significantly affect quality of life. Reliance on phytotherapy to relieve the symptoms highlights the importance of documenting ethnobotanical ...
Invitro antioxidant activity of methanolic extract of selected polyherbal drug used in Diabetes Mellitus in Northern Province, Sri Lanka.

Merin Dinushiya, J.; Nilanusha, S.; Sugansika, M.; Sivasinthujah, S.; Sivarangini, S. (University of Sri Jayewardenepura, 2024)

Background: The antioxidants are mainly involved in preventing the oxidative stress and these are used in diabetes mellitus patients in preventing the further damage to the beta cells caused by the radicals formed due ...
Physicochemical and Phytochemical screening of 'Neerizhivu Chooranam 1' used for Diabetes Mellitus in Northern Province, Sri Lanka

Merin Dinushiya, J.; Nilanusha, S.; Sugansika, M.; Sivasinthujah, S.; Sivarangini, S.; Ravimannan, N. (University of Jaffna, 2024)

Introduction: Neerizhivu Chooranam 1 is a polyherbal drug, mainly consists of Terminalia chebula, Embilica officianalis and Murraya koenigiiand it is called as Mathumaeha Choornam. This medication is especially used in ...
Potential transition and post-transition metal sulfides as efficient electrodes for energy storage applications: review

Kajana, T.; Pirashanthan, A.; Velauthapillai, D.; Yuvapragasam, A.; Shivatharsiny, Y.; Ravirajan, P.; Senthilnanthanan, M. (The Royal Society of Chemistry, 2022)

Electrochemical energy storage has attracted much attention due to the common recognition of sustainable energy development. Transition metal sulfides and post-transition metal sulfides have been intensively been focused ...
Hybrid Functional Study on Electronic and Optical Properties of the Dopants in Anatase TiO2

Chapa Pamodani Wanniarachchi, W.A.; Arunasalam, T.; Ravirajan, P.; Velauthapillai, D.; Vajeeston, P. (American Chemical Society, 2023)

TiO2 was known as a golden heterogeneous photocatalyst due to its chemical stability, low cost, nontoxicity, and strong oxidizing power. However, anatase TiO2 predominantly absorbs the photon energy in the ultraviolet ...
Low-Cost Perovskite Solar Cell Fabricated using the Expanded Graphite Back Contact and Electronically Conducting Activated Carbon as the Hole Transporting Material

Karunarathne, B.C.; Dunuweera, S.P.; Medagedara, A.T.; Velauthapillai, D.; Ravirajan, P.; Unil Perera, A.G.; Ajith DeSilva, L.; Tennakone, K.; Gamini Rajapakse, R.M.; Asoka Kumara, G.R. (American Chemical Society, 2023)

Although perovskite solar cells (PSCs) have reached a record high conversion efficiency of 25.7%, the materials used to fabricate them invoke costly hole-transporting materials, such as spiro-OMeTAD, and expensive gold ...
Well-Separated Photoinduced Charge Carriers on Hydrogen Production Using NiS2/TiO2 Nanocomposites

Shanmugaratnam, S.; Ravirajan, P.; Shivatharsiny, Y.; Velauthapillai, D. (American Chemical Society, 2023)

Photocatalytic hydrogen production is a sustainable and greenhouse-gas-free method that requires an efficient and abundant photocatalyst, which minimizes energy consumption. Currently, interests in transition metal ...
Green hydrogen production through photocatalytic seawater splitting on MS2/TiO2 (M=Ni/Co/Sn) nanocomposites over simulated solar irradiation

Shanmugaratnam, S.; Ravirajan, P.; Shivatharsiny, Y.; Velauthapillai, D. (Elsevier, 2024)

Green hydrogen will play an important role in reducing carbon emission in sectors like transportation, power supply, and industry. However, for it to become competitive technology, the costs related to hydrogen production must ...

Now showing items 1-20 of 11406

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