Proceedings International Conference on Applied and Pure Sciences 2020 (ICAPS 2020 - Kelaniya) “Science, Technology and Innovation for Economic Recovery” 26th November 2020 Faculty of Science, University of Kelaniya, Sri Lanka © 2020 - Faculty of Science, University of Kelaniya, Sri Lanka International Conference on Applied and Pure Sciences, 2020 Faculty of Science, University of Kelaniya, Sri Lanka Proceedings International Conference on Applied and Pure Sciences 2020 (ICAPS 2020 – Kelaniya) “Science, Technology and Innovation for Economic Recovery” All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, translated in any form or by any means, electronically, mechanically, photocopying, recording or otherwise, without prior permission of the publisher. ISSN 978-955-704-144-5 Published by Faculty of Science, University of Kelaniya, Sri Lanka ii International Conference on Applied and Pure Sciences, 2020 Faculty of Science, University of Kelaniya, Sri Lanka Contents Editorial Board v Organizing Committee vii Reviewer Panel ix Keynote Speaker’s Profile xv Keynote Speech xvii List of Abstracts Biological Sciences xix Physical Sciences xxii Software Intensive Systems xxiv Multidisciplinary Research xxvii iii International Conference on Applied and Pure Sciences, 2020 Faculty of Science, University of Kelaniya, Sri Lanka iv International Conference on Applied and Pure Sciences, 2020 Faculty of Science, University of Kelaniya, Sri Lanka International Conference on Applied and Pure Sciences 2020 (ICAPS 2020 - Kelaniya) EDITORIAL BOARD Snr. Prof. BM Jayawardena - Chief Editor Biological Sciences Snr. Prof. KP Abeywickrama – Head Prof. WU Chandrasekara Prof. LD Amarasinghe Dr. VPA Weerasinghe Dr. IVN Ratnayake Dr. KPRN Attanayake Dr. WMAP Halmillawewa Dr. HM Herath Physical Sciences Snr. Prof. LBDRP Wijesundara - Head Prof. PAA Perera Dr. KKKR Perera Dr. CSK Rajapakse Dr. WPT Hansameenu Dr. NV Chandrasekera Dr. DMPV Dissanayaka Dr. AGMG Gunaratna Software Intensive Systems Dr. S Peter – Head Dr. SGVS Jayalal Dr. HKTK Wijayasiriwardhane Dr. RACP Rajapakshe Dr. AP Hewaarachchi Dr. KNS Warnajith Dr. IU Hewapathirane Dr. L Munasinghe v International Conference on Applied and Pure Sciences, 2020 Faculty of Science, University of Kelaniya, Sri Lanka Multidisciplinary Research Prof. RASP Senanayake – Head Prof. J Wijayanayake Prof. WMDN Wijeyaratne Dr. AMT Amarakoon Dr. DDM Jayasundara Dr. PASR Wickramarachchi Dr. MDMDWMMK Yatawara Dr. UP Liyanage Dr. MAYL Nadeesha Dr. ALAK Ranaweera Dr. J Senevirathne Dr. AS Withanaarachchi Dr. DADA Daranagama International Editorial Members Prof. Masafumi Harada Nara Women's University, Japan Prof. R.Clive Woods University of South Alabama, USA Prof. Maurice S Skolnick University of Sheffield, UK Prof. John P.R. David University of Sheffield, UK Prof. Nihal Kularatna University of Waikato, New Zealand Prof. Rasika Churchill Oswego State University of New York, USA Prof. David Johnston Massey University, New Zealand Prof. Frank Konietschke Charité – Universitaetsmedizin, Berlin, Germany Prof. Vojtěch Merunka Czech University of Life Sciences in Prague, Czechia Dr. Satyananda Panda National Institute of Technology Calicut, India Dr. Shinji Kohara National Institute for Materials Science (NIMS), Japan Dr. Koji Ohara Japan Synchrotron Radiation Research Institute (JASRI), Japan Dr. Thanh Son Pham Institute of Materials Science, Vietnam Academy of Science and Technology, Vietnam Dr. Charanjit Kaur Monash University, Australia vi International Conference on Applied and Pure Sciences, 2020 Faculty of Science, University of Kelaniya, Sri Lanka Organizing Committee Dean, Faculty of Science Snr. Prof. Sudath R D Kalingamudali Conference Chair Dr. Annista Wijayanayake Conference Secretary Dr. Nadeeka Premarathne Track Coordinators Biological Sciences Dr. Shamen Vidanage Physical Sciences Dr. DSM De Silva Multidisciplinary Research Dr. Sujeeva Wijesiri Software Intensive Systems Dr. DN Wickramarachchi Conference Management Tool Administrators Mr. BK Jayawardena - Co-Administrator Mrs. WGDM Samankula Co-Administrator Web Development & Publicity Committee Mrs. WG Dileepa Samankula - Co-Chair Mr. BK Jayawardena - Co-Chair Mrs. AD de Silva Mr. Eng. T Madushanka Mr. JMD Senanayake Ms. Nanduni Harischandra Ms. Hazrah Fathima Finance Committee Dr. NV Chandrasekara - Chair Ms. DB Jayasuriya Mr. HAD Priyasad vii International Conference on Applied and Pure Sciences, 2020 Faculty of Science, University of Kelaniya, Sri Lanka Publication Committee Mr. CANWK Jayatissa - Chair Mr. EAAD Edirisinghe Dr. KPRN Attanayake Dr. RPGK Rajapaksha Dr. WTMAPK Wanninayaka Mrs. NMT De Silva Mr. RPKC Rajapakse Event Management Committee Dr. MAYL Nadeesha - Co-Chair Dr. HACC Perera - Co-Chair Dr. HM Herath Dr. ALAK Ranaweera Dr. AGMG Gunaratna Dr. C Kadigamuwa Dr. J Senevirathne Mrs. AIS Priyadarshan Mr. KMS Ruvinda Ms. TWNK Perera Ms. WAM Niranga Ms. MAHC Munasinghe Technical Committee Dr. RACP Rajapakshe - Co-Chair Dr. SP Pitigala - Co-Chair Mr. BK Jayawardena - Co-Chair Prof. J Wijayanayake Dr. APR Wickramarachchi Dr. SGVS Jayalal Dr. HKTK Wijayasiriwardhane Dr. AP Hewaarachchi Dr. KNS Warnajith Dr. IU Hewapathirane Dr. L Munasinghe Dr. DMPV Dissanayaka Dr. WAC Weerakoon Ms. H Niwunhella Mr. JMD Senanayake Mr. MSMS Kumara Mr. JADT Jayawickrama viii International Conference on Applied and Pure Sciences, 2020 Faculty of Science, University of Kelaniya, Sri Lanka Reviewer Panel Dr. Abeygunawardana R A B Dr. Daranagama D A University of Colombo University of Kelaniya Snr. Prof. Abeywickrama K Dr. Dassanayake B S University of Kelaniya University of Peradeniya Dr. Amarakeerthi S Prof. Daundasekera W A M University of Sri Jayawardenepura University of Peradeniya Dr. Amarakoon A M T Dr. de Silva T M M University of Kelaniya Sri Lanka Technological Campus Mrs. Amarasekara Nimalshanthi Dr. de Silva R P K University of Ruhuna University of Sri Jayawardenepura Prof. Amarasinghe L D Dr. De Silva Russel University of Kelaniya University of Kelaniya Dr. Ariyadasa H L T U Dr. De Silva H I C University of Moratuwa University of Colombo Mr. Asanka D Prof. Deshapriya N Datos (Pvt) Ltd. University of Sri Jayawardenepura Dr. Atapattu H Y R Dr. Dharmawardane P M N University of Colombo Wayamba University of Sri Lanka Dr. Attanayake R N Prof. Dias R K S University of Kelaniya University of Kelaniya Ms. Attanayake A M C H Ms. Dimithrie S University of Kelaniya Western Sydney University Dr. Bandara W A R T W R Prof. Dissanayake C University of Kelaniya Sabaragamuwa University of Sri Lanka Dr. Bandara A Prof. Dissanayake L University of Peradeniya Institute of Fundamental Studies Dr. Bandupriya H D D Prof. Dissanayake D P University of Colombo University of Colombo Prof. Chakrewarthy S Ms. Dissanayake Sadna University of Kelaniya Hayleys Advantis Limited Prof. Chandrasekara W U Dr. Dissanayake D M P V University of Kelaniya University of Kelaniya Dr. Chandrasekara N V Prof. Eeswara J P University of Kelaniya University of Peradeniya Dr. Colonne P M Dr. Egodage S M University of Kelaniya University of Moratuwa Dr. Coorey R V Prof. Epa U P K University of Colombo University of Kelaniya ix International Conference on Applied and Pure Sciences, 2020 Faculty of Science, University of Kelaniya, Sri Lanka Dr. Etampawala T N B Prof. Jayakody J R P University of Sri Jayewardenepura University of Kelaniya Dr. Fernando I R Dr. Jayakody A University of Sri Jayewardenepura Sri Lanka Institute of Information Technology Prof. Ganehenege M Y U Dr. Jayalal S University of Peradeniya University of Kelaniya Prof. Ganehiarachchi G A S M Dr. Jayalath J I K G University of Kelaniya Open University of Sri Lanka Dr. Gunasekara K A D C Prof. Jayanetti J K D S University of Kelaniya University of Colombo Dr. Gunasekera M Y Prof. Jayaratne D L University of Moratuwa University of Kelaniya Dr. Gunasekera K M T D Prof. Jayaratne K P S University of Sri Jayawardenapura University of Colombo Dr. Gunatilake S R Dr. Jayasinghe R College of Chemical Sciences University of Sri Jayawardenepura Dr. Gunawardana Asanka Dr. Jayasiri A Charité - Universitätsmedizin Berlin University of the Visual and Performing Arts Dr. Gunawardena S H P Dr. Jayasundara D D M University of Moratuwa University of Kelaniya Dr. Gunewardena N Prof. Jayathilaka N Sri Lanka Technological Campus University of Kelaniya Dr. Halmillawewa W M A P Dr. Jayathilake K P S University of Kelaniya University of Ruhuna Dr. Hansameenu W P T Dr. Jayathilake K M D C University of Kelaniya University of Kelaniya Dr. Herath H Mr. Jayatissa N W K University of Kelaniya University of Kelaniya Prof. Hettiarachchi C Snr. Prof. Jayawardena B University of Colombo University of Kelaniya Prof. Hettiaratchi U P K Dr. Jayaweera H H E University of Sri Jayewardenepura University of Colombo Dr. Hewaarachchi A P Dr. Jayaweera Y University of Kelaniya Sri Lanka Institute of Information Technology Prof. Hewageegana P S Dr. Kafi F S B University of Kelaniya University of Kelaniya Dr. Hewapathirana I U Dr. Karunanayake K O L C University of Kelaniya The Open University of Sri Lanka Dr. Jayakody L K R Mr. Karunathilake N G A The Open University of Sri Lanka University of Kelaniya x International Conference on Applied and Pure Sciences, 2020 Faculty of Science, University of Kelaniya, Sri Lanka Dr. Kasthurirathna D Dr. Pandithavidana Dinesh R Sri Lanka Institute of Information Technology University of Kelaniya Dr. Kaumal M N Prof. Pathiratne A University of Colombo University of Kelaniya Dr. Keppitiyagama C I Dr. Perara