Science - Temp: Recent submissions

Now showing items 21-32 of 32

A Study on l-Nitro-2-Napthyl Acetate as a Chromogenic substrate for the determination of Fluoride ions in water

Rathnayaka, S.S.K.; Dissanayaka, A.S. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

0- aryl esters are known to be sensitive to fluoride ions in organic medium. Based on this property, a kinetic method for the spetrophotometric determination of fluoride ion has been investigated. This studies has been ...
Development of modified carbohydrate adhesives

Sandamali, H.M.N.; Panamgama, L.A. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

A process for manufacturing maize starch based high quality and environmental friendly adhesives was investigated by using borax and poly vinyl alcohol as modifiers. Maize starch was denatured by oxidation with Hydrogen ...
Initial study on removal of organic pollutants from contaminated water by using coconut shell based activated carbon

Dananjaya, S.H.S.; Edussuriya, M. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

The ability of coconut shell based activated carbon to remove resorcinol (benzene -1 ,3 - diol),a common pollutant from contaminated water has been investigated. Activated carbon was produced using coconut shells as the ...
Manipulation of RECK (Reversion-inducing Cystein-rich proteins with Kazal motifs) in Human Vascular Smooth Muscle Cells and Human Vascular Endothelial Cells

Chandana, E.P.S.; Yoshida, Yoko; Noda, Makoto (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

Previous studies have indicated the importance of the membrane-anchored MMP regulator RECK in several events during mouse development, including maintenance o f tissue integrity, angiogenesis, myogenesis, and chondrogenesis. ...
A low cost automated device to release a certain volume of liquid

Ranatunga, E.M.; Dharmaratna, W.G.D. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

A simple automated device have been designed and constructed in order to release a predetermined amount of liquid from a container. This preliminary study indicates that the device releases water with an accuracy of ± ...
An investigation on cauda storage of sperm in hamster epididymis

Sudarshani, K.A.M.; Wegiriya, H.C.E.; Samayawardhena, L.A. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

Most of the scientific research on epididymal functions of epididymis deal with epididymal sperm maturation but not on sperm storage. Therefore, the present study was undertaken to determine the sperm storage time using ...
Effect of aqueous leaf extract of neem (Azadirachta indica) on different age groups of second stage-juveniles of Meloidogyne incognita

Premachandra, W.T.S.D.; Weeraratne, H.P. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

The effect of aqueous neem leaf extract on the survival of second-stage juveniles at four different age groups, i.e., one, three, five and seven-day-old, second and the egg hatchability of Meloidogyne incognita was ...
Point-Mutation Effects on Charge-Transport Properties of DNA

Roemer, Rudolf A.; Shih, Chi-Tin; Wells, Stephen; Cheng, Yurf-Yin; Hsu, Ching-Ling (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

There is increasing evidence that DNA can support a considerable degree of charge transport along the strand by hopping of holes from one base to another, and that this charge transport may be relevant to DNA regu ation, ...
Analysis of relative growth patterns and sexual dimorphism of selected morphometric and meristic characters of Macrobrachium rosenbergii dacqueti (Sunier 1925)

Gamage, N.T.G.; Munasinghe, D.H.N. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

Freshwater prawn Macrobrachium rosenbergii dacqueti is one of the most economically important crustacean species cultured within its’ natural distribution and beyond. This study was conducted to estimate the sexual ...
Study on the active time period, spatial distribution and nectar plants of recorded butterfly species in Kiralakelle Wetland in Matara District.

Wijekoon, W.M.C.D.; Wegiriya, H.C.E.; Bogahawatte, C.N.L. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

Although, butterflies are a group of charismatic insects, their behaviors have been rather poorly documented in Sri Lanka. Thus, present study investigated the active time period, spatial distribution in different strata ...
A Field survey on ant species in four selected locations in Wellamadama premises of the University of Ruhuna.

Wijekoon, W.M.C.D.; Bogahawatte, C.N.L.; Senevirathna, J.D.M. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

Ants are very common group of insects and constitute up to 20% of the animal biomass in tropical region. About 65 genera, 12 subfamilies and 210 species were recorded from Sri Lanka. Majority of ants belongs to the ...
Preliminary studies of the seed of Aleurites moluccana to findout the cytotoxic compounds and the preparation of biodiesel.

Wijesinghe, W.M.C.S.; Bulugahapitiya, V.P. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2009-12-23)

The constituents in the seed oil of Aleurites moluccana (Tel-kekuna) were investigated for finding out the cytotoxic compounds and the preparation of biodiesel. It was found that the oil of the seeds contain four main ...

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