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Journal of Science of the University of Kelaniya Sri Lanka最新文献

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Forecasting exchange rates in Sri Lanka: a comparison of the double seasonal autoregressive integrated moving average models (DSARIMA) and SARIMA models 斯里兰卡汇率预测:双季节自回归综合移动平均模型(DSARIMA)和SARIMA模型的比较
Journal of Science of the University of Kelaniya Sri Lanka Pub Date : 2022-12-23 DOI: 10.4038/josuk.v15i2.8067
B. Basnayake, N. Chandrasekara
{"title":"Forecasting exchange rates in Sri Lanka: a comparison of the double seasonal autoregressive integrated moving average models (DSARIMA) and SARIMA models","authors":"B. Basnayake, N. Chandrasekara","doi":"10.4038/josuk.v15i2.8067","DOIUrl":"https://doi.org/10.4038/josuk.v15i2.8067","url":null,"abstract":"","PeriodicalId":444777,"journal":{"name":"Journal of Science of the University of Kelaniya Sri Lanka","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134008544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An exploration of the psychological factors affecting on information technology employees in Sri Lanka due to the concept of work from home during covid-19 pandemic 探讨在covid-19大流行期间，由于在家工作的概念影响斯里兰卡信息技术员工的心理因素
Journal of Science of the University of Kelaniya Sri Lanka Pub Date : 2022-12-12 DOI: 10.4038/josuk.v15i2.8062
N. Siyambalapitiya, R. Wickramarachchi
{"title":"An exploration of the psychological factors affecting on information technology employees in Sri Lanka due to the concept of work from home during covid-19 pandemic","authors":"N. Siyambalapitiya, R. Wickramarachchi","doi":"10.4038/josuk.v15i2.8062","DOIUrl":"https://doi.org/10.4038/josuk.v15i2.8062","url":null,"abstract":"","PeriodicalId":444777,"journal":{"name":"Journal of Science of the University of Kelaniya Sri Lanka","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122501413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mapping of well water and soil parameters in a selected grama niladhari division of Gampaha district 在Gampaha地区选定的grama niladhari分区绘制井水和土壤参数图
Journal of Science of the University of Kelaniya Sri Lanka Pub Date : 2022-12-12 DOI: 10.4038/josuk.v15i2.8073
V. Pathirana, R. D. De Silva
{"title":"Mapping of well water and soil parameters in a selected grama niladhari division of Gampaha district","authors":"V. Pathirana, R. D. De Silva","doi":"10.4038/josuk.v15i2.8073","DOIUrl":"https://doi.org/10.4038/josuk.v15i2.8073","url":null,"abstract":"","PeriodicalId":444777,"journal":{"name":"Journal of Science of the University of Kelaniya Sri Lanka","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117274185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aspects of the biology of Phlebotomus argentipes (Diptera: Psychodidae) in Kurunegala district 库鲁内加拉地区白蛉(双翅目:蠓科)生物学方面的研究
Journal of Science of the University of Kelaniya Sri Lanka Pub Date : 2022-10-24 DOI: 10.4038/josuk.v15i2.8064
N. Nayakarathna, R. Gunathilaka, G. Ganehiarachchi
{"title":"Aspects of the biology of Phlebotomus argentipes (Diptera: Psychodidae) in Kurunegala district","authors":"N. Nayakarathna, R. Gunathilaka, G. Ganehiarachchi","doi":"10.4038/josuk.v15i2.8064","DOIUrl":"https://doi.org/10.4038/josuk.v15i2.8064","url":null,"abstract":"","PeriodicalId":444777,"journal":{"name":"Journal of Science of the University of Kelaniya Sri Lanka","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114901045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Catalytic reduction of methylene blue by magnetite - silica composite 磁铁矿-二氧化硅复合材料催化还原亚甲基蓝
Journal of Science of the University of Kelaniya Sri Lanka Pub Date : 2022-10-03 DOI: 10.4038/josuk.v15i2.8054
W. Wijesundara, T. C. J. Thambiliyagodage, R. Wijesekera
{"title":"Catalytic reduction of methylene blue by magnetite - silica composite","authors":"W. Wijesundara, T. C. J. Thambiliyagodage, R. Wijesekera","doi":"10.4038/josuk.v15i2.8054","DOIUrl":"https://doi.org/10.4038/josuk.v15i2.8054","url":null,"abstract":"","PeriodicalId":444777,"journal":{"name":"Journal of Science of the University of Kelaniya Sri Lanka","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127852876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Co-occurrence of microcystin and cylindrospermopsin in hypereutrophic Mahakanadarawa and Nachchaduwa reservoirs 超富营养化Mahakanadarawa和Nachchaduwa水库中微囊藻毒素和柱体精子素的共存
Journal of Science of the University of Kelaniya Sri Lanka Pub Date : 2022-07-05 DOI: 10.4038/josuk.v15i1.8052
M. Gunawardana, M. M. Wijesooriya, G. Randima, K. Atapaththu, K. Sanjaya, K. Masakorala, S. W. Gamage
{"title":"Co-occurrence of microcystin and cylindrospermopsin in hypereutrophic Mahakanadarawa and Nachchaduwa reservoirs","authors":"M. Gunawardana, M. M. Wijesooriya, G. Randima, K. Atapaththu, K. Sanjaya, K. Masakorala, S. W. Gamage","doi":"10.4038/josuk.v15i1.8052","DOIUrl":"https://doi.org/10.4038/josuk.v15i1.8052","url":null,"abstract":"Microcystins (MCs) and cylindrospermopsin (CYN) are the most abundant toxins produced by cyanobacteria in tropical freshwaters. We studied the spatial distribution of MC and CYN in two multipurpose reservoirs, Mahakanadarawa and Nachchaduwa in Anuradhapura district in Sri Lanka in September 2020. Fourteen water quality parameters, phytoplankton composition, chlorophyll- a , MC and CYN concentrations were analyzed in triplicate in 25 sampling sites from each reservoir. Both reservoirs were at hypereutrophic status. Microcystis was the dominant cyanobacteria with 0-3.75 x 10 3 cell/mL in Mahakanadarawa and 1-7 x 10 3 cell/mL in Nachchaduwa. Besides Microcystis , no other potential MC-producing cyanobacteria were observed. In Mahakanadarawa, MC was detected in the range of 0.11-1.63 µg/L which was above the WHO permissible level (1.0 µg/L) for drinking water. Although comparatively high Microcystis cell density was present in Nachchaduwa, its MC concentration was low (0.06-0.17 µg/L). The CYN concentration in Nachchaduwa was above the WHO permissible level (0.7 µg/L) for drinking water. It was 0.20-1.02 µg/L in Nachchaduwa and 0.03-0.08 µg/L in Mahakanadarawa. We did not observe any potential CYN-producing cyanobacteria in either of the reservoirs. There was no relationship between the spatial distribution pattern of MC and Microcystis cell density in both reservoirs. Although the majority of physico-chemical properties of water indicated suitability for drinking, co-occurrence of high concentrations of MC and CYN indicated their unsuitability for drinking. Hence, this study highlights the necessity for routing detection of cyanotoxins in both reservoirs. Further, our findings alarm potential health risks for the local community that relies on Mahakanadarawa and Nachchaduwa reservoirs for drinking, irrigation and fisheries.","PeriodicalId":444777,"journal":{"name":"Journal of Science of the University of Kelaniya Sri Lanka","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129114153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of five medicinal plant leaves on survival, oviposition and progeny development of cowpea bruchid, Callosobruchus maculatus (F.) infesting cowpea seeds in storage 五种药用植物叶片对豇豆种子储存库中豇豆斑斑胼手虫存活、产卵和后代发育的影响
Journal of Science of the University of Kelaniya Sri Lanka Pub Date : 2022-06-28 DOI: 10.4038/josuk.v15i1.8050
S. Jayasundara, G. Ganehiarachchi, R. Gunathilaka
{"title":"Effect of five medicinal plant leaves on survival, oviposition and progeny development of cowpea bruchid, Callosobruchus maculatus (F.) infesting cowpea seeds in storage","authors":"S. Jayasundara, G. Ganehiarachchi, R. Gunathilaka","doi":"10.4038/josuk.v15i1.8050","DOIUrl":"https://doi.org/10.4038/josuk.v15i1.8050","url":null,"abstract":"","PeriodicalId":444777,"journal":{"name":"Journal of Science of the University of Kelaniya Sri Lanka","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134305110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detection of Clostridium perfringens and associated preventive measures to appraise the safe meat curry consumption in the Colombo city 科伦坡市产气荚膜梭菌检测及相关预防措施评价咖哩肉的安全食用
Journal of Science of the University of Kelaniya Sri Lanka Pub Date : 2022-06-28 DOI: 10.4038/josuk.v15i1.8053
G. Ranasinghe, M. Perera, I. Perera
{"title":"Detection of Clostridium perfringens and associated preventive measures to appraise the safe meat curry consumption in the Colombo city","authors":"G. Ranasinghe, M. Perera, I. Perera","doi":"10.4038/josuk.v15i1.8053","DOIUrl":"https://doi.org/10.4038/josuk.v15i1.8053","url":null,"abstract":"","PeriodicalId":444777,"journal":{"name":"Journal of Science of the University of Kelaniya Sri Lanka","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127199541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The abundance of mosquito larvae in relation to associated microbiota and physicochemical parameters of marshland habitats in Kelaniya in Gampaha district of Sri Lanka 斯里兰卡Gampaha地区Kelaniya湿地生境蚊幼虫丰度与相关微生物群及理化参数的关系
Journal of Science of the University of Kelaniya Sri Lanka Pub Date : 2022-04-05 DOI: 10.4038/josuk.v15i1.8048
L. D. Amarasinghe, P. Menike
{"title":"The abundance of mosquito larvae in relation to associated microbiota and physicochemical parameters of marshland habitats in Kelaniya in Gampaha district of Sri Lanka","authors":"L. D. Amarasinghe, P. Menike","doi":"10.4038/josuk.v15i1.8048","DOIUrl":"https://doi.org/10.4038/josuk.v15i1.8048","url":null,"abstract":"","PeriodicalId":444777,"journal":{"name":"Journal of Science of the University of Kelaniya Sri Lanka","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125600873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low-cost microfluidic electrochemical paper-based device to detect glucose 低成本微流控电化学纸基葡萄糖检测装置
Journal of Science of the University of Kelaniya Sri Lanka Pub Date : 2022-04-05 DOI: 10.4038/josuk.v15i1.8043
W. T. H. Fernando, H. K. V. S. Jayarathna, M. N. Kaumal
{"title":"Low-cost microfluidic electrochemical paper-based device to detect glucose","authors":"W. T. H. Fernando, H. K. V. S. Jayarathna, M. N. Kaumal","doi":"10.4038/josuk.v15i1.8043","DOIUrl":"https://doi.org/10.4038/josuk.v15i1.8043","url":null,"abstract":"","PeriodicalId":444777,"journal":{"name":"Journal of Science of the University of Kelaniya Sri Lanka","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131283669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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