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International Research Symposium on Pure and Applied Sciences (IRSPAS): Recent submissions

Now showing items 41-60 of 612

Development of organic inorganic hybrid water purification system

Dikella, D. G. N. V.; Maddumaarachchi, M. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Water is one of the essential resources on earth. It is very important to protect water for the survival of all living beings. Textile industry is one of the most chemically intensive industries and a major polluter of ...
Novel membranes for treatment of water: Graphene oxide membranes cross-linked with metal cations

Bandara, W. R. N. M.; Liyanage, J. A.; Kumarasinghe, A. R. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Declining of water resources and rapid expansion of the consumption of water worldwide have led to the search of novel water treatment technologies that can provide a safe water supply to the mankind. Graphene oxide (GO), ...
In vitro release of curcumin from alginate submicron particles at pH 2 and pH 6.8

Shakoor, I. F.; Pamunuwa, G.; Karunaratne, D. N. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Alginate is a polysaccharide, a structural component of marine brown algae that has been used for slow or controlled delivery of incorporated materials in food research due to its biodegradability, biocompatibility and ...
Novel solid phase micro extraction (SPME) Method for GC-MS analysis of Tributyltin.

Bandara, K. R. V.; Chinthaka, S. D. M.; Manage, P.M. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Tributyltin (TBT) is an organotin compound belongs to the group of Persistent Organic Pollutants (POPs) and one of the active ingredients in biocides used to control a broad spectrum of organisms. Antifouling paints which ...
Comparative study of the percentage degradability of food wrapping polythene films manufactured from different virgin materials

Abeywickrama, M. S. J.; Yatawara, M. D. M. D. W. M. M. K. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

The polythene industry in Sri Lanka is being shifted towards the use of compostable raw materials to manufacture food wrapping - films (lunch sheets) after the prohibition of films which are less than 20 microns. Nevertheless, ...
Bench scale fixed-bed column adsorption studies and adsorption modelling: removal of methylene blue from aqueous solutions using glutaraldehyde cross - linked chitosan beads

Amarasooriya, M. P. N. A.; Rajapakse, C. S. K. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

As dye-containing waste effluent is a big threat not only to the environment, but also to human life and the economical removal of dyes from wastewater has become an environmental challenge in nowadays. Therefore, this ...
Generic assumption vs. actual stem carbon content in three selected street tree species in urban setting of Colombo, Sri Lanka

Kulangana, T.; Bandara, W. A. R. T. W. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Current interest on removal of anthropogenic CO2 emissions from urban areas through plants, arises with the potential of trees in urban environments to sequester atmospheric carbon and offset the increasing CO2 concentrations ...
Monitoring heavy metal air pollution using moss as a biomonitor and developing a mathematical relationship based on surrogate approach, to determine heavy metal loads in moss

Yohani, A. A. R .; Deeyamulla, M. P. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Atmospheric pollution is one of the major problems that mankind is dealing with. Under air pollutants, heavy metals are toxic and persist in the environment. Monitoring heavy metal loads in the atmosphere is therefore of ...
Effect of CaCO3 on mechanical properties and degradability of polythene manufactured from low density polyethylene

Abeywickrama, M. S. J .; Yatawara, M. D. M. D. W. M. M. K. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

One of the major drawbacks of polythene manufactured from low density polyethylene is its poor degradability in the environment. The present study was therefore planned to assess how the addition of CaCO3 effect on the ...
Entrepreneurial success of small scale floriculture entrepreneurs: A tool for rural empowerment

Kiriveldeniya, K. K. A.; Sivashankar, P.; Elapata, M. S.; Mahaliyanaarachchi, R. P.; Esham, M. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Floriculture industry shows a significant potential to improve and modernize the agriculture sector through diversification, commercialization and value addition. By encouraging villagers to engage in floriculture related ...
Isolation and identification of indigenous acetic acid bacteria from Sri Lankan coconut toddy for vinegar production

Ranasinghe, W. M. S. H.; Gunawardane, M. M. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

The aim of this study was to isolate and identify indigenous acetic acid bacterial (AAB) isolates in Sri Lanka, from local coconut toddy samples, which are capable of producing the highest acetic acid concentration that ...
HPLC analysis of organic acid production by bacterial strains for rock phosphate solubilization.

Mendis, H. K. G. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Fertilizers are widely used to increase crop production and meet the global food demand. Phosphorous is one of the key nutrients in fertilizers that assists plant growth and improve crop yield. Eppawala rock phosphate (ERP) ...
Improving shelf life of commercial borate-glycol based wood preservatives

Nandasiri, H. I. S. I.; De Silva, R. C. L. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Borates as wood preservatives have played an ever increasing role in preservation of wood against wood destroying insects and made them particularly attractive in today’s environmentally conscious market. But the precipitation ...
Fabrication, optimization and evaluation of an indirect heated forced air circulation type solar dryer for drying of Pogostemon heyneanus Benth

Amadoru, I. J.; Abeysinghe, D. C.; Gunathilaka, H. A. W. S.; Dharmadasa, R. M. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Pogostemonheyneanus Benth. is an aromatic plant cultivated for extracting patchouli oil which is largely used in perfumery, pharmaceutical and food industries. The oil is extracted via steam distillation of shade dried ...
Synergism of cell penetrating peptides in adsorbing to DOPC lipid bilayers

Wijesiri, N. K.; Kumara, B. T.; Purijjala, P. W. C. M.; Ranatunga, R. J. K. U. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Cell penetrating peptides (CPPs) represent a potential breakthrough for the cellular delivery of therapeutics. CPPs are small peptidic molecules capable of translocating through cell membranes, which generally show low ...
Determination of narcotic (morphine, codeine, 6-monoacetylmorphine) levels in human urine by gas chromatoghraphy

Manohari, I. D. M.; Karunaratne, W. D. V.; Abeysinghe, T. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Drug abuse has become a more prevalent problem in Sri Lanka in the last few years. The presence of residues and their metabolites of illicit drugs that are excreted by humans is an evidence of intake. Therefore, the aim ...
Questionnaire survey of knowledge of farmers in Lankapura, Polonnaruwa district about foot and mouth disease (FMD), 2019

Siriwardhana, B. A. M. P. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Dairy farming is an important source of subsidiary income of farmers in Lankapura, Polonnaruwa. Milk and meat are important sources of nutrition. Although measures have been taken to increase the dairy sector in Lankapura, ...
Feasibility of the use of Wavelet theory for the analysis of climate changes

Ranawaka, R. A. C. S. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

Climate is the most important component that affects the environment, with direct and indirect influences of human activities. Generally, climate is the average weather prevailing over an area. The climate is dynamic in ...
Learning analytics intervention and evaluation of factors associated with student academic performance in SLTC education study programs

Ranawaka, R. A. C. S.; Perera, W. A. S. N. (4th International Research Symposium on Pure and Applied Sciences, Faculty of Science, University of Kelaniya, Sri Lanka, 2019)

The value of education and its significance is important for human beings as it helps in the personal, social and economic development of the nation. The performance of students plays a vital role in order to develop quality ...

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