4.Journals Published in Sri Lanka
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Item Influence of whole and sub soil salinity on growth, development, physiology and yield of selected rice varieties cultivated in Jaffna district, Sri Lanka(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2017) Pradheeban, L.; Nissanka, S.P.; Suriyagoda, L.D.B.Item Groundwater quality of three agro-ecological zones of Sri Lanka(Soil Science Society of Sri Lanka:Peradeniya, 2005) Nandasena, K.A.; Gunawardhana, D.K.S.N.; Kendaragama, K.M.A.Item Quality of agrowell water in the dry zone. a case study in the Anuradhapura district(Soil Science Society of Sri Lanka :Colombo, 2000) Kendaragama, K.M.A.Item Use of variability in determining the minimum sample size to estimate selected soil properties of Alfisols in Sri Lanka(Soil Science Society of Sri Lanka:Colombo, 2002) Mapa, R.B.; Wickramasinghe, S.Item Vulnerability assessment for shallow aquifers using chemical quality of groundwater a case study from Thirunalvely and Kondavil in Jaffna district(Postgraduate Institute of Agriculture, University of Peradeniya:Peradeniya, 2008) Mikunthan, T.; De Silva, C.S.Item Electrical properties of zircon ceramics doped with different dopants(University of Peradeniya. Peradeniya, 2002) Dahanayake, U.; Karunaratne, B.S.B.Item Ionic conductivity of the Na2SO4-Na2WO4 system(University of Peradeniya. Peradeniya, 1995) Sumathipala, H.H.; Dissanayake, M.A.K.L.; Careem, M.A.; Bandaranayake, P.W.S.K.In this study, the electrical conductivity of the Na2SO4-Na2WO4 system has been measured using complex impedance technique to investigate the effect of anion substitution on the cationic conductivity. In the Na2SO4(I) based solid solubility region the conductivity increases as SO4 ions are substituted by WO4 in the crystal structure. Maximum conductivity of 4x10-4 Scm-1 with an activation energy 0.5 eV at 450oC has been observed around 22 mol% Na2WO4. The secondary conductivity maximum observed at 48 mol % Na2WO4 could be associated with a two-phase mixture consisting of Na2SO4 based and Na2WO4 based solid solutions.Item A new system of Lithium fast ion conductors based on LiTi2P3O12 and Pyrophyllite(University of Peradeniya. Peradeniya, 1995) Zhao Jingzong, W.W.; Duanyang, L.Pyrophyllite has been used as a starting material for the synthesis of Lithium fast ion conductors of the Li1+3xAlxTi2-xSi2xP3-2xO12 system by high temperature solid phase reaction. Most of the reactions completed at 1073-1423K. X-ray differaction analysis and an a.c. impedance technique were employed to characterize these fast ion conductors. The results showed that the lattice symmetry of most compositions in the system is R3c and the maximum ionic conductivity reaches upto the order of 10-2Scm -1 at 573K. The highest conductivity corresponds to the initial composition x = 0.15.