Session of the Faculty of Science of the Annual Research Symposium 2014 will be held on 21st of November 2014, at the Faculty of Science Premises. There will be three corresponding sessions for the streams, Biological Sciences, Chemical Sciences and Physical Sciences.

Message from the Dean


This year’s theme for the Annual Research Symposium of the University of Colombo is University – industry collaboration for strengthening the knowledge hub of Sri Lanka which harmonizes with the curricula of the Faculty of Science. The industry oriented courses offered by the seven departments and the industrial training as well as internship programmes are intended to strengthen the skilled task force of the country and to develop enthusiasm among the undergraduates to become entrepreneurs. Furthermore, the postgraduate programmes offered by the Faculty of Science are deemed to strengthen the competent human resources in the disciplines of sciences and mathematics.The latest addition to our M.Sc. programmes is on Actuarial Science which is introduced to accustom our students to the requirements in actuarial
and banking sectors.

During past 10 months over 300 postgraduates have enrolled in our postgraduate programmes and at the last postgraduate convocation, our postgraduate programmes have produced Ph.D.’s 117 M.Sc.’s and 57 Postgraduate Diplomas to strengthen the work force in the country.

At this Annual Research Symposium 30 abstracts will be presented on 21st at the Faculty of Science research sessions reflecting innovative research carried out by our postgraduate students under the able guidance of the proficient academic staff.

The endeavor in the preparation of abstracts and making the presentations are affectionately acknowledged. My sincere gratitude is extended to the reviewers and the research committees in at the faculty and the other committees of the University for the successful completion of their assignments. On behalf of all the academic and nonacademic staff of the Faculty of Science, I send my profound gratitude to the organizing committee and all the participants at this Annual Research Symposium 2014 and my good wishes for a very rewarding and productive event.

Professor K.R. Ranjith Mahanama
Dean/ Science

Program in Brief

9.00 am – 9.30 amRegistration of participants and refreshments( Refreshments will be served at the Dean’s office)
Biological Sciences

Venue: Seminar Room 01, Plant Sciences (Ground Floor)
Session Chairpersons: Dr. S. Ranwala/ Dr. N. Pallewatta
9.30 am – 9.45amInvestigation on suitability of several alternative substrates for the growth of an edible mushroom, Schizophyllum commune
S. S. Ediriweera, R. L. C. Wijesundera, C. M. Nanayakkara and O.V.D.S.J. Weerasena
9.45 am – 10.00 amOptimizing environmental parameters affecting in-vitro rock phosphate solubilization by a native Burkholderia sp
R. K. R. S. Ranasinghe, C. M. Nanayakkara, H. A. Sumanasena and D. N. Samaraweera
10.00 am – 10.15 amRapid and sensitive detection of sugarcane white leaf and sugarcane grassy shoot diseases   by Loop mediated isothermal amplification (LAMP) assay
C. Kanatiwela-de Silva, S. Thushari, P. V. Udagama and M. Dickinson
10.15 am – 10.30 amIn vitro and in vivo haemostatic activity of Sri Lankan wild type Carica papaya L. mature leaf concentrate
C.D Jayasinghe,W.D Ratnasooriya and P.V.Udagama
10.30 am – 10.45 amImpact of land use on occurrence, species composition and diversity of stream fish in the Kalu Ganga river basinK. Kulasekara and D. D. Wickramasinghe
10.45 am – 11.00 amAn investigation of mangrove distribution pattern and associated factors in selected localities along Matara – Galle coastal belt
B.W.A.C Pradeep, E.Y.K Lokupitiya, and E.P.S Chandana
11.00 am – 11.15 amPatterns of morphological variation in Zosterops white-eyes along the elevational gradient in theWet Zone of Sri Lanka
N. Wickramasinghe and S. Seneviratne
11.15 – 11.30 amIdentifying Measures to Produce Tea with Minimum Impact to Climate Change by Reducing its Cradle-to-Gate Life Cycle Carbon Footprint: A Study in Sri Lankan Context
J.Vidanagama and E.Y.K. Lokupitiya
Chemical Sciences

Venue: Room 110,

Mathematics Department
Session Chairpersons: Prof. R. Wijesekera / Prof. D. P. Dissanayake
Mycoleptodiscin B, an antimicrobial alkaloid from Mycoleptodiscus sp. endophytic in Calamus thawaitesii (Arecaceae)
D.M.R.K. Dissanayake, Pamoda B. Ratnaweera, E. Dilip de Silva, David E. Williams,
C.D. Wijayarathne, R.L.C. Wijesundera and Raymond J. Andersen 
Misfolding of β amyloid protein due to electrostatic interaction of heavy metals and methionine sulphur using Cu2+ as a model
S.S. Gajaweera,  R.P. Perera and S. Weerasinghe
Investigation of heavy metals in roadside dust particles and indoor depositions from selected locations in Gampaha District
A.U. Gurusinghe and K.R.R. Mahanama
Development of a method to use gunshot residue as a forensic evidence to establish the shooter
W.M.A. Kumara, A. Weliangaand K.R.R. Mahanama
Fabrication and development of novel and simple paper-based electrochemical devices
N. A. A. B. Nissanka, H. H. A. M. Ruvini, T. G. Vithanage, Hasini R. Perera and  Migelhewa N. Kaumal
Determination of Cr(VI) and other heavy metals in leather products of Sri Lanka
A.G.G.C. Premaratne, S.L Rajasingham and K.R.R.Mahanama
Quantification of pesticide residues in black tea by GC-MS
K. B. A. G. Premathilaka, N. Punyasiri and K. R. R. Mahanama
Preliminary investigation of heavy metals exposure to different occupations
R.M.H.K. Rambukella, V. A. Waduge and K.R.R. Mahanama
A novel electrochemical method for the determination of caffeine using phenol formaldehyde polymer modified carbon paste electrode
H. H. A. M. Ruvini, T. G. Vithanage, N. A. A. B. Nissanka, Hasini R. Perera and Migelhewa N. Kaumal
Nutrition labelling of kithul (Caryota urens) sap, treacle and jaggery

H.P.P.S.Somasiri, G.A.S. Premakumara and K.R.R.Mahanama
Development of a novel carbon paste electrode for the simultaneous determination of lead and cadmium in water

T. G. Vithanage, N. A. A. B. Nissanka, H. H. A. M. Ruvini, Hasini R. Perera, and Migelhewa N. Kaumal
Physical Sciences

Venue: Seminar Room, Physics Department
Session Chairpersons: Dr J.K. Wijeratne/Prof. S. R. D. Rosa / Dr. M.D.T. Attygalle
Fuzzy based model on analysis of invasiveness due to dispersal related traits of plants

H.O.W Peiris, S.S.N Perera and S.M.W Ranwala
Optimal control model of transmission of dengue: Theoretical model
P.D.D. Gallage and S.S.N. Perera
A local sensitivity analysis of the dynamic model for dengue disease transmission
W.P.T.M Wickramaarachchi and S.S.N Perera
Effect of sulfidation on n-type Cuprous Oxide thin films for gas sensing properties of liquefied petroleum
K.N.D. Bandara, K.M.D.C. Jayathilaka, M.S. Gunewardene, D.P. Dissanayaka and J.K.D.S. Jayanetti
Distribution of earth resistance around communication towers in lightning prone areas
M. Udara Mendis and K. P. S. Chandana Jayaratne
Trends of daily maximum and minimum air temperature at Nuwara Eliya
D.U.J. Sonnadara
Changes in extreme rainfall events: Results from the CCAM simulations over Sri Lanka
A. Thevakaran1, J.L. McGregor2, J. Katzfey2, M. Thatcher2, R. Suppiah2 and D.U.J. Sonnadara3
A survey on relevance of Physics education in Sri Lanka
M. K.  Weerakoon and R.V. Coorey
A comprehensive study of deposit interest rates in Sri Lanka
A.G.L.M. Amarajeewa, R.A.B. Abeygunawardana and
K.P.N.S. Dayarathne
A simulation study of the properties of the F-test for type III fixed effects in binary gen eralized linear mixed models (GLMMS)
A.A.Sunethra and M.R Sooriyarachchi
A software tool for analyzing nonreplicated two-way and three-way data
E.R.A.D. Bandara and W.N. Wickremasinghe