Browsing by Author "Perera, A."

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    Analyze the Histamine level in various positions of the Histamine developed Tuna fish
    (Uva Wellassa University of Sri Lanka, 2015) Kalubowila, K.S.H.; Liyanage, N.P.P.; Perera, A.
    Sea food processing industry is a high income generating field in Sri Lanka and it brings high foreign exchange to the country. Big eye tuna (Thunnus obesus) and yellow fin tuna (Thunnus albacares) are the major tuna types which are exported by Sri Lanka to the international market. (FAO, 2014).However the presence of Histamine is the problematic factor inTuna fish processing industry which leads the industry to many health issues and income losses. Histamine is a chemical compound created from histidine and enteric bacteria are capable of transforming histidine to histamine by the enzyme decarboxylase. Once histamine is formed, it cannot be not destroyed by freezing, cooking, smoking, curing or canning. Histamine level of more 2012).Histamine level varies position of the tuna fish body. Hence this research was carried out to identify and analyze the Histamine level in various positions of the Histamine developed tuna fish. Methodology Survey was done to select the positions of taking samples from tuna fish. 15 fresh fish processing companies were selected and questionnaire was given. Three positions were selected based on the questionnaire filled by the fish processing companies. Three positions of the tuna fish were selected, beneath the pectoral fin of the fish, near the belly area and the tail end respectively and thirty tuna fish were subjected to Histamine test individually. ELISA method and histaminevertox test kit were used to analyze the histamine levels in the tuna fish.Sample preparation, sample extraction, sample dilution and Histamine testing are the major steps done in ELISA method. Collected data were analyzed by using Minitab 17 software.Highest mean values and variance values were taken from those positions. Non parametric Mann-Whitney test was done to find out the significant different among positions. Results and Discussion Highest mean values and variance values were taken from those positions. High Histamine was recorded in the belly area due to the most of the bacteria which responsible for converting Histidine to Histamine, lived in the gut of tuna fish. Through poor post-harvest techniques, low hygiene practices, bad catching method, bad killing methods and bad handling methods could expose the gut material to the fish muscles and so enteric bacteria easily release the Histidine decarboxylase enzyme to Histidine free specific amino acid and then forming Histamine (Koohdaret al., 2010).This reaction cannot be stopped and can only be controlled. Usually low histamine levels could be observed from gilled and gutted fish because gilled and gutted fish had low probability to contaminate by histamine forming enteric bacteria (Ebrahimet al., 2012).Very low Histamine level was recorded in the tail area because effect of enteric bacteria which lived in the tail was very low because of that ability to bacterial contamination also very low and histamine also very low.
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    An Empirical Study of Students’ Satisfaction with Professional Accounting Education Programs, Sri Lanka
    (Uva Wellassa University of Sri Lanka, 2020) Nadishana, G.S.W.Y.; Ameen, Z.; Kulatunga, K.A.; Perera, A.; Perera, C.; Madhavika, W.D.N.; Nagendrakumar, N.
    This study aimed at analyzing the factors affecting students' satisfaction with professional accounting courses offered by Professional Accounting Education Institutions and also aimed to assess the impact of students' satisfaction and students' loyalty towards Professional Accounting Education Institutions in Sri Lanka. It was evident that a significant gap exists between student enrolment and the rate of students’ passing out as professional accountants as per the annual reports of the Institute of Chartered Accountants of Sri Lanka and the Institute of Certified Management Accountants of Sri Lanka (2014-2018). The study adopted a deductive methodology while employing a stratified random sampling technique and distributed 500 questionnaires which had a response rate of 80%. The data were analyzed using structural equation modeling via SPSS and AMOS versions 25. The study concluded that course assessment and institutional image, teaching methods, teaching staff, course organization and infrastructure facilities, and institutional administration and efficiency significantly impact the students’ satisfaction. And also, it concluded that the students’ satisfaction significantly impacts students’ loyalty. This study added value to the literature by focusing the students’ satisfaction from two extreme angles (i.e., students’ need and loyalty) and introduced a new model which would enhance the appropriate administration of the Professional Accounting Education Institutions. Keywords: Professional Accounting Education Institutions, Students’ satisfaction, Students’ loyalty, Sri Lanka
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    Seedling Composition and Relative Growth in Dieback-affected Tropical Montane Cloud Forest in Horton Plains National Park, Sri Lanka
    (Uva Wellassa University of Sri Lanka, 2018) Lakkana, T.; Ediriweera, S.; Perera, A.; Ashton, M.
    This study evaluates the composition and growth of naturally grown tree seedlings in dieback affected forests in Horton Plains National Park. Forty plots (plot size: 1 m2) were established under disturbed (20 plots) and relatively undisturbed forests (20 plots). Seedlings were tagged and root collar diameter and height of tagged seedlings were measured in 03 month intervals for a year, while recording new recruits. A total of 373 seedlings representing 21 species and 16 plant families including Lauraceae (19.1%), Rubiaceae (16.7%), Symplocaceae (16.4%), Euphorbiaceae (15.6%), Elaeocarpaceae (11.3%) and Aquifoliaceae (5.1%) were recorded. Frequently encountered seedlings were Neolitsea fuscata (15.9%), Glochidion pycnocarpum (15.6%), Elaeocarpus glandulifer (10.2%), Symplocos sp. (16.4%), Ilex walkeri (5.1%), Actinodaphne speciosa (3%), and Syzygium sp. (3.2%). Mean height increment rate (cm month-1) was greatest in Sarcococca brevifolia (0.5 ± 0.08), in disturbed condition and in undisturbed condition it was greatest in E. glandulifer (0.4 ± 0.06). Mean height increment rates were not significantly different (p > 0.05) in A. speciosa, N. fuscata, Syzygium sp., Symplocos sp. and Meliosma simplicifolia in both conditions. In disturbed condition, mean root collar diameter increment rates (min month)) of the most abundant species were G. pycnocarpum (0.03 ± 0.01) and Symplocos sp. (0.02 + 0.00) while in undisturbed condition, it was N. fuscata (0.03 + 0.01) and Symplocos sp. (0.04 ± 0.01). Mean root collar diameter increment rates of the Syzygium sp., Symplocos sp., N. fuscata, I. walkeri, and A. speciosa were not significantly different (p > 0.05) in both conditions, however significantly higher in both S. brevifolia and Lasianthus sp (p > 0.05) in disturbed condition. Knowledge generated from this study provides baseline information on growth performance of seedlings of tropical montane forests and that can support for the assistant restoration of dieback affected sites in the future.