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Browsing Vingnanam by Issue Date

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Now showing items 1-20 of 35

Cladistic Analysis of the Tribe Aeliini (Heteroptera: Pentatomidae: Pentatominae) from the Oriental Region

Zaidi, R. H. (Faculty of Science, University of Jaffna, 1994)

A Cladistic Analysis showing phylogenetic relationships of the tribe Aeliini Stal having five genera and ten species from the Oriental region is presented. The dendrogram shows that the genera Aelia Fabricius, Bonacialus ...
Some Cautions on the US Model of Assessment in Engineering and Science

Hoole, D.; Hoole, S. R. H. (Faculty of Science, University of Jaffna, 2011)

The US model of assessing students is increasingly widespread and is pushed through so called reform efforts. This model includes take-home exams, homework and group work where the independence of the student’s work cannot ...
Prevalence and associated factors of soil transmitted helminthes infestation among preschool children of Vadamaradchi Educational Zone

Karunaithas, R.; Murugananthan, A.; Kannathasan, S. (Faculty of Science, University of Jaffna, 2011)

This cross sectional study was designed to find out the prevalence of soil transmitted helminth infestation and associated factors among preschool children of Vadamaraadchi Educational Zone in Jaffna district. One preschool ...
Comparison of the Kinetic Properties of Crude and Purified Xylanase from Bacillus pumilus with Commercial Xylanase from Aspergillus niger

Kapilan, R.; Arasaratnam, V. (2011)

Xylanases showing better stability at alkaline pH and higher temperatures have potential applications in several industrial processes. The objective of this study is to compare the kinetic properties and stability of crude ...
A preliminary study on the toxic effects of an emerging detergent (Prinso) on rat skin

Dayasiri, P. B. I. A. K.; Chandana, E. P. S. (Faculty of Science, University of Jaffna, 2011)

Toxic effects of household detergents on human skin have been reported previously. Recently emerged detergent “PRINSO” is extensively gaining popularity in many areas of Sri Lanka. “PRINSO” is also sold under other trade ...
Changes in carbohydrates and amylolytic activity during malting of a local variety of rice

Chandrasekar, K.; Arasaratnam, V. (Faculty of Science, University of Jaffna, 2012)

A local variety of paddy, “Mottaikaruppan” variety was selected for this study. Both paddy and its dehusked unpolished rice grains were steeped and allowed to germinate. Steep liquor analysis revealed that there was an ...
Evaluation of semen quality brought from Kundasale as replacement of locally produced semen for artificial insemination in Jaffna Peninsula, Sri Lanka

Nilani, K.; Eswaramohan, T.; Mahadhevan, P. (Faculty of Science, University of Jaffna, 2012)

Artificial Insemination (AI) with frozen semen has been proved as the most potent method for rapid genetic improvement in domestic animals. While the use of AI with fresh semen is limited by the restricted period of sperm ...
Effect of Xylan on XylanaseProduction by Bacillus pumilus Under Submerged Fermentation

Mahilrajan, S.; Balakumar, S.; Arasaratnam, V. (Faculty of Science, University of Jaffna, 2012)

Xylanase production by the alkalophilic Bacillus pumilus was improved under submerged fermentation when commercial Birchwood xylan was used as the substrate. Initially the medium containing commercial Birchwood xylan 20gL-1 ...
Parasites of two co-occurring house gecko species, Hemidactylus frenatus and Gehyra mutilata from Central Sri Lanka

Mahagedara, P. D.; Rajakaruna, R. S. (Faculty of Science, University of Jaffna, 2012)

Two house gecko species, the Asian house gecko, Hemidactylus frenatus (Schlegel, 1836) and the four-clawed gecko, Gehyra mutilate (Wiegmann, 1834) inhabiting urban areas in Kandy and Kegalle districts were examined to ...
Presence of Saprolegnia spp. (Oomycetes) in the Sivanamman Pond and its Characteristic Features

Digamadulla, K. M. D. S.; Sivashanthini, K.; Thavaranjit, A. C. (Faculty of Science, University of Jaffna, 2015)

Simultaneous improvisation in expertise and facilities in disease diagnosis have led to the identification of several previously unknown pathogens and diseased conditions. Saprolegniosis is one of the disease for which no ...
Tools for Environmental Impact Assessment (EIA) Using Diversity Indices

Khan, S. J. (Faculty of Science, University of Jaffna, 2015)

This article gives information regarding the various biodiversity indices which could be used successfully as the tools for undertaking environmental impact assessment.
Stress induced changes in hydrogen pressure in contact with tubular diffusion membrane

Kandasamy, K. (Faculty of Science, University of Jaffna, 2015)

Hydrogen permeation studies in Palladium and Palladium alloys reveal that hydrogen diffusion is non-Fickian in metals and their alloys due to the stress field induced by the hydrogen in their lattice. Previously the ...
Assessment on the present status of coastal fisheries at Gurunagar, Jaffna

Thivviyan, S.; Jayakody, D.S. (Faculty of Science, University of Jaffna, 2015)

Fishery is a major income source of the Sri Lankan people resides in the coastal region. Among those, Jaffna contributes a considerable proportion to the total fishery production of the island which was 4.5% of the total ...
Socio-economic status of fishers in Allaipiddy village, Jaffna

Ragavan, N.; Sivashanthini, K.; Sutharshiny, S. (Faculty of Science, University of Jaffna, 2015)

The present study was carried out in Allaipiddy for a period of eight months from June 2014 to January 2015. The socio-economic data of randomly selected 53 fishermen was ob tained through pre-tested structured questionnaire, ...
Assessment of water quality index of groundwater quality in Chunnakam and Jaffna Town, Sri Lanka

Harshan, S.; Thushyanthy, M.; Gunatilake, J.; Srivaratharasan, T.; Gunaalan, K. (Faculty of Science, University of Jaffna, 2016)

The Water Quality Index (WQI) is simple tool and compound indicator, aggregates information from several water quality parameters to convey water quality information in single value to planners, policy makers and the public. ...
Nutritional Composition of Selected Species of Sea cucumbers from Waters around Jaffna Peninsula, Sri Lanka

Ketharani, U.; Sivashanthini, K. (Faculty of Science, University of Jaffna, 2016)

Biochemical studies (protein, fat, moisture and ash) were done on five species of holothurians namely Holothuria leucospilota, Holothuria scabra, Holothuria spinifera, Stichopus naso and Thelenota anax, which were collected ...
Important physico-chemical parameters and sediment characteristics of some selected sites in the Jaffna estuary

Sivashanthini, K.; Sutharshiny, S.; Gunaalan, K.; Tharmine, A.; Veronika, K.; Senathera Digamadulla, K.M.D. (Faculty of Science, University of Jaffna, 2016)

The present study was carried out to investigate the spatial variation of physico - chemical parameters and sediment characteristics in some areas of the Jaffna estuary in order to assess the differences among sites with ...
Learning loss and learning difficulties of Junior Secondary students in Science subject due to COVID-19 outbreak - study based on J/Attiar Hindu College, Neervely

Poornima, S.; Nithlavarnan, A. (The Faculty of Arts, University of Jaffna, Sri Lanka, 2018)

Students from remote schools are the victims who face learning loss and difficulties during the COVID-19 risk vacation. The objective of the study is to find out the learning loss and difficulties of junior secondary ...
Selecting and optimizing a reliable DNA extraction method for isolating viral DNA in okra (Abelmoschus esculentus)

Jeyaseelan, T. C.; Jeyaseelan, E. C.; De Costa, D. M.; Shaw, M. W. (Faculty of Science, University of Jaffna, 2019)

Detection and identification of viruses in okra plant is important to manage viral diseases. Good quality of DNA is essential for the PCR based detection and subsequent genomic sequencing. However, the DNA extraction has ...
Diversity and Abundance of Waterbird Communities in the Jaffna and Kilinochchi Districts: Where do we have to go from here?

Kandasamy, G.; Weerakoon, D. K.; Sivaruban, A.; Jayasiri, H. B. (Faculty of Science, University of Jaffna, 2019)

Wetlands and waterbirds are inseparable elements. The preliminary study was conducted in eight sites, namely Mandaitivu, Mankumban, Kayts, Kavutharimunai, Pallai, Thadduvankoddy, Kapputhu and Nagarkovil in the Jaffna and ...

Now showing items 1-20 of 35

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