Theme


Peradeniya University International Research Sessions will be conducted under the following themes,


  • Natural Sciences

    This sub-theme invites papers on advances in natural sciences including fundamental and applied research in the fields of physics, astronomy, chemistry and earth sciences, zoology, botany, molecular biology, biotechnology and bioengineering. In addition, papers on geophysics, biochemistry, and sports science will also be entertained.
  •                  O - Oral Presentation, P - Poster presentation                                                                                    

    Paper No   Topic  Presentation mode

    13

    Synthesis and characterization of Copper(ll) and Cadmium(ll) complexes of some hydroxamate   derivatives
    Saranya S, Sithambaresan M,  Koneshwaran M

    O

    17

    Cosmological model to evaluate the present radius and the density of the oscillating universe
    Vithanage GVRK, Katugampala KDWJ

    P

    27

    Survival and development of Menochilussexmaculatus(Fabricius) (Coleoptera: Coccinellidae) larvae on natural and formulated diets: an attempt for mass rearing
    Priyadarshani TDC,Hemachandra KS, Sirisena UGAI,
    Wijayagunasekara HNP

    P

    32

    Insecticide-induced feminization of frogs: effect of exposure of common hourglass tree frog to three insecticides
    Jeganathan P, Rajakaruna RS

    O

    33

    Synthesis of zirconia nanoparticles from Sri Lankan zircon sand
    Palihawadana TC, Karunarathne BSB

    O

    34

    Age dependent tolerance to parasitism: Trematode infections in tadpoles of common hourglass tree frog (Polypedatescruciger)
    Pathirana NUK, Meegaskumbura M, Rajakaruna RS

    P

    35

    Susceptibility status of the Spinose ear tick, Otobiusmegnini (Acari: Argasidae) to selected acaricides
    Diyes GCP, Bandara KMUJ, Rajakaruna RS, Karunaratne SHPP

    O

    49

    Life cycle of Hyalommaisaaci(acarina: ixodidae) under laboratory conditions
    Bandaranayaka KKO, Rajakaruna RS

    P

    58

    Facile synthesis of hydroxyapatite (HA)-polymethylmethacrylate (PMMA) nanocomposites by a novel ex-situ polymerization method: morphology, thermal stability and formation mechanism of HA particles in the nanocomposite
    Gamagedara TP, Bandara HMN, Rajapakse  RMG

    O

    61

    Prevalence ofWolbachiainfection in mosquito populations in Sri Lanka
    Wijegunawardana  NDAD, Silva Gunawardene YIN,
    Chandrasena TGAN, Dassanayake RS, Gunathilaka PADHN,
    Kittayapong P, Xi Z, Bourtzis K, Abeyewickreme W

    O

    70

    Extraction of silica from selected Sri Lankan traditional rice husks
    Fernando GSP, Godakumbura P, Prashantha MAB

     

    P

    74

    Use of acrylic based hydrogels for preconcentration of trace level lead ions
    Chinthaka SDM, Wanigasekara RMPI

    O

    75

    Use of acrylamide based hydrogels for
    preconcentration of trace level chromium ions
    Kulasekara DN,Chinthaka SDM

    O

    93

    Electropolymerization of partially purified natural terthiophenes extracted from roots of  Tageteserecta
    Kaluarachchi CP, Ratnaweera DR, Prashantha MAB

    O

    96

    Heavy metal biosorption by Alginic acid extracted from Sargassum sp.
    Dhanukshi HGN, Cooray AT, Ratnaweera DR,
    Kuruwita-Mudiyanselage TD

    P

    109

    Modification of apatite from Eppawala rock phosphate deposit (ERPD) to be used in advanced materials: removal of fluoride and particle size reduction
    Gamagedara TP, Bandara HMN, Rajapakse RMG

    P

    140

    Zinc and copper organic framewoks as heterogenous catalysts for the esterfication of stearic acid
    Abeyrathna WRNS, Ganehenege MYU

    P

    152

    Host preferences of frog-biting Uranotaenia mosquitoes in Sri Lanka
    Herath BP, Ekanayake C, Karunaratne SHPP, Bernal XE, 
    De Silva WAPP

    O

    157

    Determination of the optimum nitrate and phosphate concentrations for maximum growth of Chlorella sp.
    Herath HMCH, Ganehenege MYU

    O

    161

    Genetic diversity and population structure of malaria vector mosquitoes Anopheles peditaeniatus, An. subpictusand An. vagus(Diptera: Culicidae) in five districts of Sri Lanka
    Weeraratne TC, Surendran SN, Karunaratne SHPP

    O

    165

    In vitro release study of Linamarin encapsulated Chitosan nanoparticles
    Nicholas IHV, Karunaratne V, Amaratunga GAJ, Karunaratne DN

    P

    174

    Synthesis, characterization and investigation of antimicrobial activity of monomeric ni (ii) and co(ii) complexes of a schiff-base ligand synthesized from 2, 4-dinitrophenylhydrazine and acetyl acetone
    De Silva PIT, Ganehenege MY

     

    P

    205

    A series of isocoumarins from an endophytic fungus Biscogniauxiacapnodes from Phyllanthusacidus
    Dissanayake DM, Kumar NS, Jayasinghe L, Fujimoto Y

    O

    206

    Isolation and characterization of spiciferone A from an endophytic fungus Phomamacrostomaisolated from Artocarpusaltilisfruits
    Thanabalasingam D, Kumar NS, Jayasinghe L, Fujimoto Y

    O

    213

    Monitoring exposure of birds to heavy metals and arsenic in Bundala National Park, Sri Lanka: a preliminary study
    Jayasena NUA, Kotagama SW, Diyabalanage S,        Hettiarachchi IM, Chandrajith R

    O

    214

    Structures and properties of naphthoquinones produced by Monacrosporiumambrosium, an ectosymbiote of the shot hole borer beetle Xyleborusfornicatus
    Kehelpannala CL, Kumar NS, Jayasinghe L, Araya H, Fujimoto Y

    O

    216

    Synthesis and characterization of plant based thiophene and 3-hexylthiophene copolymers
    Kodithuwakku U, Prashantha MAB, Ratnaweera DR

    O

    221

    Intercalation of alkaloids of Cassia auriculatalinn. into h+- and al3+-exchanged montmorillonite clays
    Abeywansha AI, Bandara NC, Bandara BMR

    O

    222

    Intercalation of squalene into h+- and al3+-exchanged
    montmorillonite clays and releasing of squalene at simulated gastric conditions
    Gunasekara DUM,  Bandara NC, Bandara BMR

    O

    236

    A preliminary taxonomic survey of leafy liverworts from some selected localities of Sri Lanka
    Samarakkody SP, Ruklani NCS, Rubasinghe SCK

    O

    248

    Abundance and status of migratory water birds on Mandaitivu and adjacent areas in Jaffna, Sri Lanka 
    Wijesundara CS, Rajkumar P

    O

    252

    Investigation of floral dye extracts as dyeing material for textile fabrics with bio mordant for Sri Lankan textile industry
    Wijeyapala UGS

    P

    256

    Anti-candidal activity of two plant extracts
    Wickramasinghe WRMRLK, Kularathna NK,
    Bhaddrathilaka HGWM

    P

    264

    Evaluation of antioxidant properties and alpha-amylase inhibitory activities of some medicinal plants
    GunawardhanaCB,Waisundara VY, Jayasinghe L

    P

    265

    Fabrication of seed assisted Cds and properties
    Kumarage WGC, Wijesundera RP, Seneviratne VA,
    Jayalath CP, Dassanayake BS

    O

    270

    TX-100 assisted CBD-CdS thin films
    Adikaram KKMBB, Gunatissa SM, Kumarage WGC,
    Dassanayake BS

    O

    274

    Comparison of tiger beetle (Coleoptera:Cicindelidae) diversity in four protected areas in different climatic zones of Sri Lanka
    Thotagamuwa A, Dangalle CD, Pallewatta N,
    Lokupitiya E, Sumanapala A, Ranasinghe RHT

    P

    276

    A comparative study on ED-CDS and CBD-Cds thin films
    Abeykoon MRMB, Kumarage WGC, Dissanayake BS

    O

    285

    Antimicrobial and antioxidant activities of PlectranthuszeylanicusBenth
    Napagoda MT, De Soyza WSG, Wijesiriwardhana P,
    Qader MM, Wijayaratne WMDGB, Nagahawatte A de Silva,  Jayasinghe L

    O

    286

    Chemistry and bioactivity of secondary metabolites from Pestalotiopsismicrospora, an endophytic fungus from Manilkarazapota
    Rathnayake GRN, Kumar NS, Jayasinghe L, Araya H, Fujimoto Y

    O

    287

    Ethnobotanical study on medicinal plants used as anti-inflammatory therapeutics among the inhabitants of Gampaha district- Sri Lanka
    Napagoda MT, Sundarapperuma SMTD, Fonseka NHDP,
    Amarasiri AMSS, Gunaratna KAPD

    O

    290

    Fumigaclavine C and monomethylsulochrin from an endophytic fungus Aspergillus fumigatus from Solanum insanum fruits
    Munasinghe MVK, Kumar NS, Jayasinghe L, Araya H,
    Fujimoto Y

    O

    291

    Search for novel therapeutics for gout: a preliminary screening for xanthine oxidase inhibitors from some medicinal plants
    Napagoda MT, Qader MM, Jayasinghe L

    O

    297

    Surface functionalization of cellulose fibers with hydroxyapatite nanoparticles
    Priyadarshan G, Siriwadhana A, Kottegoda N,
    Amaratunga G, Karunaratne V

    O

    316

    Cocktail effect of Profenophos and Abamectin used in paddy cultivation on Asian common toad (Duttaphrynusmelanostictus)
    Rathnayaka RRPYK, Rajakaruna RS
                                        

    O

    317

    Graphene as an anticorrosion coating layer
    Jiwlehela JGN, Gunawardhana N

    P

    335

    Screening of anti-diabetic and antioxidant activity of edible greens
    Weerarathne TS, Galketiya C, Punchihewa JC, Wickramaratne MN, Wickramaratne DBM

    P

    342

    Resource partitioning in bird faunas of forest and agricultural ecosystems
    Weerakoon G, Agalawatta W, Wijesundara CS

    O

     

    349

    Anti-inflammatory activity of Acronychiapedunculata leaves
    Ratnayake WMKM, Suresh TS, Chandrika UG, Abeysekara AM, Salim N

    O

    351

    Allelopathic activity of some edible fruit extracts against Lactuca sativa
    Niyangoda D, Kumar NS, Jayasinghe L

    P

    356

    Selective capturing of phenol using lignin particles
    Wijesekara AV, Jayasundera KB

    P

    377

    Conservational significance of Dunumadalawa forest reserve in central Sri Lanka based on the endemism of its avifauna
    Hettiarachchi T, Wijesundara CS

    P

    386

    Talarofuranone, a new fungal metabolite from an endophytic Talaromycespurpurogenusfrom Pouteriacampechiana seeds
    Padmathilake KGE, Bandara HMSKH, Qader MM, Kumar NS, Jayasinghe L, Masubuti H, Fujimoto Y

    P

    397

    Effect of dengue insecticide fogging on cashew pollinators and other non-target insects
    Nugapola NWNP, Karunaratne WAIP, Perera MDB,
    De Silva WAPP, Karunaratne SHPP

    O

    398

    Effect of tea waste biochar on soil acidity amelioration on acidic tea growing soils of Sri Lanka         
    Herath WSKK, Dharmakeerthi RS, Gunaratne GP

    P

    399

    Efficacy of aloe veraagainst the pathogen Aeromonashydrophilainfecting gold fish
    Dissanayake DMSG,  Jagoda SSS de S,  Arulkanthan A,
    Wijesundara RRMKK

    P

    401

    Effect of tissue type on the development of myiasis-causing fly, chrysomyabezziana (diptera: calliphoridae) under controlled conditions
    Bambaradeniya YTB,  Karunaratne WAIP, Tomberlin JK, Goonerathne I,  Kotakadeniya RB,  Fuward RM

    O

    413

    Potential of gamma-ray spectrum analysis as a method to determine radioactive elements in geological samples
    Waniganeththi WS, Wijayawardane RL

    O

    420

    Isolation and identification of lipase inhibitors from Trigonellafoenum-graecumseeds
    Fernando WIT,  Jayasinghe L, Araya H, Fujimoto Y,
    Attanayake AMKC, Perera HKI, Sivakanesan R

    O

    427

    Fabrication of nano zero valent iron on kaolinite templates by a green pathway
    Pathirana V, Pathmanathan R, Bandara A, Weerasooriya R, Chandrajith R

    O

    442

    Synthesis of zero valent iron nanoparticles and application in nitrate reduction
    Randiligama HMSP, Bandara WMAT, Weerasooriya SVR

    O

    445

    Quantitative analysis of Gold alloys using NaI (Tl) scintillation detectors through neutron activation
    Dewasundara VK, Wijayawardana RL, Jayalath CP

    P

    446

    Comparative studies of bio activity and chemistry of combined plant extracts
    Keppetipola NM, Jayasinghe JMS         

    O

    455

    Electrochemical reduction of carbon dioxide in the presence of a cobalt schiff base complex synthesized from 2,4-dinitrophenylhydrazine and acetylacetone
    Lelwala LLACD, Ganehenege MYU, De Silva T

    P

    456

    Effect of five pesticides on juvenile terrestrial stages of the common hourglass tree frog, Polypedatescruciger
    Karunarathna NB, Meegaskumbura M, Rajakaruna RS

    O

    460

    Study of the decomposition of acetic acid, ethanol and isopropyl alcohol by the Fenton reagent
    Gunathilka SJKMRS, Prashantha MAB, Cooray PLAT

    P

    461

    Life cycle of brown dog tick Rhipicephalussanguineuslatreille, 1806 under laboratory conditions
    Dissanayake UI, Rajakaruna RS

    P

    462

    Sri Lankan vein graphite / polyaniline composite counter electrode for dye sensitized solar cells by screen printing method
    Perera I, Thennakoon S, Kumara GRA, Perera ADLC,
    Gunathilake SS

    P

    467

    Comparison of avifaunal diversity in different habitats in Jaffna peninsula
    Kandasamy G, Wijesundara C, Sivaruban A

     

    P

    468

    Does shading affect hatching success and sex ratio of hatchery relocated eggs of green turtles?
    Hewapthiranage S,  Rajakaruna RS

    P

    470

    Through hole copper plating on printed circuit board activated with a conducting layer of polyaniline
    Zahra MZF, Bandara HMN

    O

    473

    Novel method for the synthesis of unstable vaterite polymorph of hollow calcium carbonate nanoparticles and encapsulation of anticancer drug cisplatin
    Dunuweera SP, Rajapakse RMG

    P

    516

    Bio assay guided isolation of anti-bacterial active compounds from whole plant extract of Eleusineindica
    Perera HAI, Athapattu US, Rajapakse S,  Jayasinghe S

    O

    534

    Inspectional analysis to produce graphene oxide using Sri Lankan natural vein graphite
    Rathnayake RMNM, Wijayasinghe HWMAC, Pitawala HMTGA, Yoshimura M

    O

    551

    Pickering emulsions stabilized by a non-ionic surfactant and assorted metal oxide nanoparticles
    Siddika MMNA, Karunaratne DN, Premarathne EPN

    P

    561

    Bioassay guided isolation of active compounds from hexane extract of fruits of Garcinia quaesitapirre
    Liyanagamage DSNK, Karunaratne V, Jayasinghe S

    O

    569

    Raptors presented to Veterinary Teaching Hospital (VTH), University of Peradeniya
    Jayasinghe MGCM, Indika KG, Sumanasekara KK,
    Dangolla A, De Silva DDN

    O

    574

    Antioxidant activity in aqueous extracts of fruit of Phyllanthusemblicastored for six months at room temperature and at 4oc using 1, 1- diphenyl-2-picrylhydrazyl (dpph) assay
    Kumutharanjan T

    P