Department of Chemistry: Recent submissions

Now showing items 41-60 of 72

Assessment of Developmental and Reproductive Fitness of Dengue-Resistant Transgenic Aedes aegypti and Improvement of Fitness Using Antibiotics

Ramyasoma, H.P.B.K.D.; Gunawardene, Y.I.N.S.; Hapugoda, Menaka; Dassanayake, R.S. (BioMed Research International, 2021)

Background. Genetic modification offers opportunities to introduce artificially created molecular defence mechanisms to vector mosquitoes to counter diseases causing pathogens such as the dengue virus, malaria parasite, ...
Identify the effect of As(III) on the structural stability of monomeric PKM2 and its carcinogenicity: A molecular dynamics and QM/MM based approach

Paligaspe, Priyani; Weerasinghe, Samantha; Dissanayake, D.P.; Senthilnithy, R. (Journal of Molecular Structure, 2021)

Abstract Pyruvate Kinase M2 (PKM2) isozyme is categorized under the pyruvate kinase family, and it catalyzes the final step in the glycolysis process. PKM2 enzyme is highly expressed in tissues with anabolic functions ...
Compensatory Base Changes Reveal Sexual Incompatibility among Members of the Anopheles subpictus Sensu Lato (Diptera: Culicidae) Species Complex in Sri Lanka

Jayatunga, D. P. W.; Harischandra, I. N.; Chandrasekharan, N. V.; de Silva, B. G. D. N. K. (MDPI, 2021)

The mosquito Anopheles (Cellia) subpictus sensu lato (s.l.) is a major secondary vector of malaria in Sri Lanka. The sibling species composition in this species complex in Sri Lanka remains debatable. Compensatory base ...
Biopolymer-Based Nanohydroxyapatite Composites for the Removal of Fluoride, Lead, Cadmium, and Arsenic from Water

Fernando, M. Shanika; Wimalasiri, A.K.D.V.K.; Dziemidowicz, Karolina; Williams, Gareth R.; Koswattage, K.R.; Dissanayake, D.P.; de Silva, K.M. Nalin; de Silva, Rohini M. (American Chemical Society, 2021)

In this study, hydroxyapatite (HAP) nanocomposites were prepared with chitosan (HAP-CTS), carboxymethyl cellulose (HAP-CMC), alginate (HAP-ALG), and gelatin (HAP-GEL) using a simple wet chemical in situ precipitation method. ...
Reduction-Induced Synthesis of Reduced Graphene Oxide-Wrapped Cu2O/Cu Nanoparticles for Photodegradation of Methylene Blu

Kalubowila, K. D. R. N.; Gunewardene, M.Siyath; Dissanayake, Dhammike; Jayathilaka, Charith; Jayasundara, J.M.Dilushan; Jayasingha, Lakmini Kaushalya; Gao, Yun; Jayanetti, J. K. D. S. (ACS Publications, 2021)

A photocatalytic composite in powder form having nanosized Cu2O/Cu granules wrapped in multilayered reduced graphene oxide (rGO) sheets was synthesized. The fabrication process was initiated by potentiostatic electrodeposition ...
The possible mechanisms of oral hypoglycaemic activity of Pleurotus ostreatus and P. cystidiosus.

Jayasuriya, W.J.A.B.N.; Fernando, G.H.; Wanigatunga, C.A.; Abeytunga, D.T.U.; Suresh, T.S. (2014)
Pleurotus ostreatus, a Culinary Mushroom as a Functional Food to Treat Inflammatory Conditions

Jayasuriya, W.J.A.B.N.; Handunnetti, S.M.; Wanigatunge, Chandanie A.; Fernando, Gita H.; Abeytunga, D.T.U.; Suresh, T. Sugandhika (2015)
FTIR characterization and antioxidant activity of water soluble crude polysaccharides of Sri Lankan marine algae

Abeytunga, D.T.U.; Fernando, I. P. Shanura; Sanjeewa, K. K. Asanka; Samarakoon, Kalpa W.; Lee, Won Woo; Kim, Hyun-Soo; Kim, Eun-A; Gunasekara, U. K. D. S. S.; Nanayakkara, Chandrika; de Silva, E. D.; Lee, Hyi-Seung; Jeon, You-Jin (2017)

Polysaccharides of marine algae exhibit different structural characteristics and interesting biological functions. In this study, crude polysaccharides (CP) of eleven Sri Lankan marine algae obtained through hot water ...
ANTI FUN GAL ACTIVITY OF SURFACE MODIFIED Mn2+ Z110

Jayaruk, T.C.; Wijesundara, R.L.C. (2012)

This research has focused on determining the antiﬂingal of activity of Mn2+ doped ZnO nanoparticles. The Mi2+-ZnO nanoparticles coated with PEG was selected for theapplication as PEG is a biocompatible materia. which ...
Preparation and characterization of edible soy protein films

Liyanage, Duminda Shiromalee (2001)
DNA FINGERPRINTING ELICITED EVOLUTIONARY TREND OF ORAL CANDIDA TROPICALIS ISOLATES FROM DIVERSE GEOGRAPHIC LOCALES

Dassanayake, R.S.; Samaranayake, Y.H.; Samaranayake, L.P. (2006)

Purpose: To study molecular profiles of oral Candida tropicalis isolates from five different geographic locales to determine the molecular diversity, clonality and evolutionary trends of this opportunistic pathogen. Methods: ...
REDUCING FLATULENCE FACTORS IN SOYMILK USING COCONUT KERNEL α-GALACTOSIDASE IMMOBILIZED HYDROPHOBIC GELS

Dharmasena, Madushini Nirosha; Mathew, C.D. (2012)
vAntibacterial and Larvicidal Activities of Sri Lankan Endemic Plant, Vateria copallifera

Senadeera, S.P.D.; Wijayarathna, C.D.; Weerasinghe, I.S.; Kulatunga, K.A.K.C. (2011)

Crude acetone extracts of leaf, bark, pericarp and seeds of Sri Lankan endemic plant, Vateria copallifera were evaluated for antibacterial and larvicidal activities against ten clinically important pathogenic microorganisms ...
Preliminary Assessment of U.K. Human Dietary and Inhalation Exposure to Polybrominated Diphenyl Ethers

Harrad, R.; Halliwell, C.; Baker, S.; Wijesekera, R.D.; Hunter, S. (2004)

This study reports concentrations of BDEs 47, 99, 100, 153, and 154 in outdoor air [median SigmaPBDE (sum of BDEs 47, 99, 100, 153, and 154) = 18 pig m(-3)] in air from a range of office and home indoor microenvironments ...
A low cost nutrient formulation with a buffer for simplified hydroponics systems

Saparamadu, J.S.; Wijesekera, R.D.; Gunawardhana, H.D.; Weerakkody, W.A.P. (2010)

The pH of the nutrient solution is a major determinant of nutrient uptake by the plants. The most suitable pH range for the plants is recognized as 5.8 - 6.5. Therefore, the pH of the nutrient solution has been adjusted ...
Use Patterns and Residue Levels of Pesticides on Mukunuwenna, a Leafy Vegetable Grown in Sri Lanka

De Alwis, G.K. Hemakanthi; Wijesekera, R.D.; Jayasekera, T.A.D.N.A. K. (2006)

Intensive use of chemical imputs such as pesticides and fertilizers as a means of expanding domestic food production in Sri Lanka began in the 1960's (Abeysekera 1988). Pesticides also showed spectacular success in control ...
The pK value of ligands and stability constants of the complexes of Fe(III), Cu(II) Ni(II) with some hydroxamic acids: a comparative study of three diifferent potentiometric methods

Senthilnithy, R.; Costa, M.D.P. De; Gunawardhana, H.D. (2008)

The determination of ionization constants and the chelating properties exhibited by a series of derivatives of N-phenylbenzohydroxamic acid, N-phenyllaurohydroxamic acid and 1-naphmalenememylimminodiacetohydroxamic acid ...
In situ determination of copper (II) and cobalt (II) using adsorptive cathodic stripping voltammetry with hydroxamic acid modified carbon paste electrode

Senthilnithy, R.; Costa, M.D.P. De; Gunawardhana, H.D. (2006)
Detailed studies on complexation behaviour and mechanism of fluorescence quenching of naphthalene linked hydroxamic acid with transition metal ions by UV-visible and fluorescence spectra

Costa, M.D.P. De; Jayasinghe, W.A.P.A. (Journal of Photochemistry and Photobiology A: Chemistry, 2004)

The stoichiometry of the complex formation and mechanism of fluorescence quenching of compounds 1 and 2 with Fe(III), Cu(II) and Zn(II) were carried out in great detail by spectrometric and fluoromertric methods. Complexes ...
Phototransposition Reactions of Methyl-Substituted Benzotrifluorides: Proof of the Role of Trifluoromethyl-Substituted Carbon

Costa, M.D.P. De; Pincock, J. (2002)

Irradiation in acetonitrile of any one of the six isomers of dimethylbenzotrifluoride 8 resulted in efficient photoisomerization to the others. The dominant processes in these phototransposition reactions divides the isomers ...

Now showing items 41-60 of 72

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