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Journal Cover Sabaragamuwa University Journal
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  This is an Open Access Journal Open Access journal
   ISSN (Print) 1391-3166
   Published by Sri Lanka Journals Online Homepage  [48 journals]
  • Performance of A Sodium Thiocyanate Based Gel Polymer Electrolyte In Redox

    • Abstract: Solid state redox capacitors have received a tremendous interest in terms of several characteristics such as their fast energy delivery, short charging time, high power density and extended durability. Due to the absence of a liquid electrolyte, they are free from drawbacks of leakage and unsafe. In this study, preparation and characterization of a redox capacitor consisting with two identical polypyrrole (PPy): dodecylbenzenesulfonate (DBS) electrodes and a gel polymer electrolyte (GPE) based on polyvinylidene fluoride (PVdF), ethylene carbonate (EC), propylene carbonate (PC) and sodium thiocyanate (NaSCN) is reported. The GPE having the composition, 0.4 PVdF: 1 EC: 1 PC: 0.075 NaSCN (by weight) showed the maximum conductivity of 2.25× 10-3 S cm-1. Redox capacitors were characterized using Cyclic Voltammetry, Electrochemical Impedance Spectroscopy and Galvanostatic Charge Discharge test. They exhibited an energy density about 0.25 W h kg-1 and an average power density of 4 kW kg-1. Published on 2015-12-01 00:00:00
  • “Should ‘Paraviwella Beach’ in Sri Lanka be Preserved for ‘Sea
           Bathing’'”: A ZTCM Approach

    • Abstract: ‘Sea bathing’ is the main recreational activity at the Paraviwella Beach Park in Sri Lanka. However, there is a proposal by the Government of Sri Lanka to convert the Beach Park into an area that could be used for the expansion of the fisheries harbour. Our study examines the possibility of the proposal against maintaining the Park by using the Zonal Travel Cost Method to estimate the welfare benefits (in terms of Consumer Surplus). The study shows that the welfare benefits of Paraviwella Beach Park to be LKR 6.39 million per year for local visitors. Our results suggest that for maximum revenue from the park to be derived, the fresh water bathing fee should be raised to LKR 100.45 from the present fee of LKR 20 since those who sea-bathe requires a fresh water bath thereafter. Though it would reduce the visitor numbers to the Park by 34%, it would increase the total revenue of the Park by 231.18%. These values demonstrate that the Park can be preserved for sea-bathing while making the site more financially viable. Published on 2015-12-01 00:00:00
  • External Insights to Boost Internal R&D Efforts of the Fish and Seafood
           Export Processing Industry in Sri Lanka

    • Abstract: This research is focused on the fish and seafood export industry of Sri Lanka, considering its importance to the country’s economy. The objectives of the study are to investigate the nature of open innovation practices among fish and seafood exporters in Sri Lanka and to find out the role of open innovation on product and process development, market identification, market expansion, brand image, quality control, labelling and certification, sales promotion and advertising, and the sustainability of the resource base. The empirical study is based on the data obtained from 26 EU approved fish and seafood processing establishments. A structured questionnaire followed by interviews with CEOs, R&D heads and quality controllers were the principal data collection tools. Hansen and Birkinshaw’s capability measure is used to measure the firm’s level on idea generation, conversion and diffusion. Processing firms were divided into three groups; idea-rich/poor, conversion rich/poor and diffusion rich/poor. Hypothesis testing proved the positive relationship between firm performance and open innovation practices of the firms. Results reveal that firms are idea rich, conversion and diffusion moderate. Moreover, the study has identified open innovation partners, the nature of their support and the open innovation process of the fish and seafood export processors. Published on 2015-12-01 00:00:00
  • Good Bye,

    • Abstract: My personal, “Multidisciplinary Research” adventure, which began in 2007, when I took over as coordinating editor of the SUSL journal, has now come to its natural conclusion and the time has come to pass the baton to our new editor in chief, Dr. Aruna Shantha, a colleague and enthusiastic academic. It was the wish of Prof. Dayananda Somasundara, former vice chancellor and founder of the SUSL journal and all later vice chancellors to give scientific direction, guidance and courage. Journal stands today on the strong foundation they laid and an enthusiasm and hard work of the editorial staff.I wish to take this opportunity to express my sincere thanks and great appreciation to Mr. Prasad C. Iddamalgoda, for his valuable contribution in designing the volumes, Printing companies for their cooperation on quality production of the journal, Sri Lanka Journals Online (SLJOL), National Science Foundation and especially Ms. Sioux Cumming for her excellent support on entire journal editing, production and dissemination process. This is my final touches on SUSL journal and with this issue, then my editorship comes to an end. My dream, the SUSL journal will fly high strides and wish all the very best for better tomorrow. Published on 2015-12-01 00:00:00
  • Effect of pre-harvest Potassium Treatment on Stem-end Rot Disease
           Development of Mango (Mangifera indica L.)cv. TomEJC during Fruit Ripening

    • Abstract: Mango (Mangifera indica L.) cv. TomEJC has utmost potential in export market due to its unique quality. Post-harvest disease of mango such as stem-end rot can cause considerable losses of fruits and could therefore be considered as a great threat to local and export market. This disease is controlled by application of fungicides from the time of flowering in cultivations where this disease is severe. However, the use of fungicides could lead to hazardous effects such as oncogenic risks on the consumers. Therefore, search for alternative measures for the management of stem-end rot disease is essential. In this study, an attempt was made to find out the effect of pre-harvest application of KCl on controlling stem-end rot disease development of ripe fruit. KCl at concentrations of 1 gl-1, 2 gl-1 and 4 gl-1 were sprayed on fruit when fruits were immature. All fruits were bagged with paper bags and fruits were harvested at the correct maturity stage. Then all fruits were inoculated with Botryodiplodia theobromae mycelial plug and allowed for natural ripening. A significant difference was observed in fruit length, fruit width and fruit volume in KCl- treated fruits when compared to controls. Highest fruit volume was observed in 1 gl-1 KCl- treated fruits and the lowest amount of total soluble solids was observed in 2 gl-1 KCl- treated fruits. An increase in lightness and yellowness of peel color in KCl- treated fruits when compared to control II (non-inoculated, non-treated) was evident, indicated by increasing L*, b* and chroma values. However, no significant difference in hue values of peel color was observed among treatments. Flesh color showed a different response to treatments and no difference in chroma value was observed among treatments. The highest L* value and hue value was observed in 2 gl-1 KCl- treated fruits. Incidence and severity of stem-end rot was significantly decreased by 2 gl-1 KCl treatment without drastically affecting the physico-chemical properties of fruits. Vast research has shown that potassium and chloride fertility have been effective in reducing crop injury from diseases. Different mechanisms such as nutritional effects, changes of the host-pathogen environment and production of disease inhibitory compounds could be some possible ways of action of both K and Cl in modifying disease resistance or susceptibility. Since 2 gl-1 KCl was able to suppress stem-end rot disease development in inoculated fruits, this concentration can be recommended as a field application to control this disease in mango variety tested after repeating the same experiment at different locations. Published on 2015-12-01 00:00:00
  • Adsorptive Behavior of Arsenic(III) Ions from Aqueous Solution onto
           Forestry and Agricultural Waste Biochar Pyrolyzed at 400°C

    • Abstract: Sorption capacity of two different biochar (saw dust and rice straw) was evaluated in the recovery of arsenic from aqueous solutions. Biochar from rice straw and saw dust were obtained from pyrolysis of biomass at 400°C. The optimum sorption conditions were studied for different concentrated monometallic system. Sorption studies were performed at different pH, contracting time and different initial metal ion concentration in the batch mode. The optimum pH was 3 for recovery of As(III) and kinetic studies yielded an optimum equilibrium time of 50-60 minutes with an adsorbent dose of 1 g/L and initial concentration ∼20 mg/L for As(III) ions. As(III) ions in aqueous solution were transported to biochar surface through adsorption and intra-particle diffusion process. Experimental data for As(III) ions was fitted a Langmuir model with R2 value for As(III) 0.969, 0.879 for saw dust and rice straw respectively. The Freundlich constant, KF values for removal of As(III) ions by saw dust and rice straw were 0.9127, 0.8951 respectively. The 1/n value for arsenic ions obtained from saw dust and rice straw were 0.209, 028 and indicate the normal sorption of As(III). The values indicated the affinity of the sorbent towards the uptake of As(III) ions were favorable and rice straw and saw dust biomass can be used to remove Arsenic(III) ions from aqueous phase. Published on 2015-12-01 00:00:00
  • Application of Seed Treatments to Increase Germinability of Cardamom
           (Elettaria cardamomum) Seeds under in vitro Conditions

    • Abstract: Cardamom (Elettaria cardamomum) has great commercial value as a spice in Sri Lanka. Due to the presence of hard seed coat, cardamom has low seed germination potential. Therefore the present study was conducted to study the potential to improve the seed germination by applying different mechanical, physical and chemical treatments and to develop a cost effective and rapid seed germination method in in vitro conditions.Complete Randomized Design (CRD) with ten replicates was used for the study. The seeds of cardamom were treated with 40 different seed treatments and surface sterilized by using 20% clorex. MS basal medium was used without plant growth regulators and solidified by 0.6% agar. Anova (DMRT) test showed that there were significant effects at p<0.05 level on seed germination of cardamom seeds with different seed treatments.According to the results 50% HNO3 for 15 min exposure was the best treatment to obtain higher number of germinated seeds (90%) within 6 weeks upto 0.6 cm height. The second and third best treatments were 75% HNO3 for 15 min and 75% HNO3 for 10 min which showed 80% and 65% seed germination percentages respectively. This experiment showed chemical treatment (HNO3) is the best to induce seed germination of E. cardamomum in in vitro conditions. The results obtained in this study will be important for plant breeders and farmers who cultivate these species commercially. Published on 2015-12-01 00:00:00
  • Failures in Decolonization and ‘the Return to the Past’:
           Reading V.S. Naipaul

    • Abstract: This study examines the failures in decolonization and its political outcomes leading to a phenomenon called ‘totalitarianism’ in a transitional post-colonial context, as characterized in the works of V.S. Naipaul. It attempts to articulate how the post-colonial nations, once ‘abandoned’ by their Colonial Masters and then taken over by unsuccessful indigenous rulers, have encountered symptomatic political development within themselves ‘as finite limitations of their existence’ as they have emerged and are ideologically embedded in a historically affected consciousness (Gadamer 2006). To escape from the humiliation, dislocation, anxiety, jealousies and alienation generated by modern secularism and rationalism transmitted through colonialism itself, they seem to ‘return’ (Amin 2014: 81) to an ideology largely borrowed from history and tradition as ‘retrogressive nostalgia’ for today’s and tomorrow’s problems, which ultimately results in nothing but violent totalitarianism. In such transitional contexts where societies still struggle to come to terms with modernity, though the material conditions of life improved, the shift in mentality (Miao 2000) from one condition to a completely unprepared and unexpected phase remains crucial. The destructive energy that is often used against the universal civilizing force is seen here as a ‘compensation for the pain suffered through the disintegration of traditional forms of live’ (Habermas 2007: 102). This study, with the support of contemporary philosophical, political, literary and psychoanalytical interventions, dialectically examines how such symptomatic developments are empirically explored in the fictional and biographical works by V.S. Naipaul. Published on 2016-05-01 00:00:00
  • An Investigation into the Efficacy of Applying the Principle of Rasa in
           Formulating Television Advertisements

    • Abstract: Rasa element in turn consists of ten parts, namely, Srungaarö, Karuna, Wiirö, Biibathsö, Shaanthö, Haasyö, Raudrö, Bhayanakö, Athbhuthö and vatsalyö. Objectives were to find whether or not ‘Rasa’ in Indian poetics can be used as an effective audio visual tool in the selected advertisement samples from Sri Lankan television and to make commercials more interesting by mixing existing Indian poetic theory with better understanding of the aesthetic sentiment known as ‘Rasa’. For the purpose of this research, specific advertisements have been selected from Sri Lankan television with special attention given to the ten elements of ‘Rasa’. Out of the ten elements of ‘Rasa’ Karuna and Shaanthö have not been found. There yet remains scope for improvement in the field of audio visuals with a better knowledge of Indian poetics and in conclusion it can be stated that any future studies done in relation to aesthetic sentiment or ‘Rasa’ will not be limited to benefitting the field of advertizing but would additionally benefit film making and the creation of videos for social awareness as well. Published on 2016-05-01 00:00:00
  • An Evaluation of the Effectiveness of An Olympism Education Programme to
           Resolve Conflicts Between Primary School Students in Sri Lanka

    • Abstract: This paper reports and discusses the findings of an experimental method study that investigated how Olympism education could strengthen competencies on conflict resolution, through delivery of socio-cultural values educating young students in ethnically divided societies in Sri-Lanka.The research examined the initiatives first by investigating the impact of education in promoting peace in Sri Lanka. Secondly, the study provided an explanation for the potential nature of Olympism in conflict resolution and promoting peace in Sri Lanka. The study has introduced an integrated model of Olympism values and conflict resolution strategies and has been tested among primary students who represent the two main Sri Lankan ethnic groups; Singhalese and Tamils. Considering the effects of the intervention, the most notable finding of this study was that conflict resolution and Olympism Education integrated curriculum intervention significantly improved experimental group students’ conflict resolution competencies regardless of their gender or ethnicity. This research concluded that strategically designed and carefully managed Olympism lessons can help students to develop and enhance competencies of conflict resolution. In order to achieve significant outcomes in young children’s ability to learn to resolve their conflicts when they were exposed to physical education lessons, it is needed to employ experiential learning opportunities through a well balanced theoretical basement and sporting activities. Published on 2016-05-01 00:00:00
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Tel: +00 44 (0)131 4513762
Fax: +00 44 (0)131 4513327
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