Amarasinghe, S.R; Kunio, W.; Gamal, A.(Japan Society of Civil Engineers, 2010)
Inverse technique to evaluate the unsaturated hydraulic properties of soil/rock was studied using
Campbell and van Genuchten models, as the functions of the hydraulic properties. When the parameters
of these models are ...
Amarasinghe, S.R.; Watanabe, K.; Maung, M.M.(Japan Society of Civil Engineers, 2011)
Several countries utilize the sedimentary soft rock for nuclear waste disposal because it has a
potential to use as a host rock. Therefore, the analytical researches on the unsaturated flow of this type of
rocks have ...
Precise estimation of unsaturated hydraulic
properties of porous media is indispensable in various
study areas, such as analyzing the moisture flow, the drying
process occurring from the surface, and the pollutant
migration ...
Amarasinghe, S.R.; Fernando, F.F.F.G(University of Sri Jayawardenepura, 2014-04-23)
Problems generated by solid waste have become a major national issue in Sri Lanka due
to high levels of economic growth and consumption. Inappropriate management of solid waste
may generate many problems such as ...
Amarasinghe, S.R.(University of Rajarata, Sri Lanka, 2020)
Groundwater is the major source of drinking water in the
Lenabatuwa division, Kamburupitiya, Matara, Sri Lanka. This study was
aimed to explore some heavy metal concentrations (Cu, Cd, Pb, Zn, Ni,
and As) in drinking ...
Amarasinghe, S.R; Madushanka, P.L.A.(University of Rajarata, Sri Lanka, 2021-12)
Limited attempts were made using Canadian Council of Ministers
of the Environment (CCME) water quality index (WQI) to interpret
irrigation water quality conditions of tank cascade systems (TCS) in Sri
Lanka. The ...
Amarasinghe, S.R,(University of Rajarata, Sri Lanka, 2021-05-24)
Many lakes, canals and wetlands in Sri Lanka are infested by water hyacinth
(Eichhornia crassipes (Mart.) Solms), which is a non-indigenous invasive aquatic
weed species. It causes a complete blockage of water resources ...
Amarasinghe, S.R,(Faculty of Agriculture, University of Ruhuna, 2022-01-29)
Disposal and proper management of garden waste in urban and semi-urban areas of Sri Lanka have become a
problem due to several constraints. Compost production by introducing common additives to garden waste will be
an ...
Amarasinghe, S.R.,; Jayaweera, W.M.C.S.,(Faculty of Agriculture, University of Ruhuna, 2022-10-23)
Spent mushroom substrate (SMS) has the potential to produce compost with different additives. However, some
substances and by-products produced during the process can be toxic to seed germination and plant growth. ...
Amarasinghe, S.R,(Faculty of Agriculture, University of Ruhuna, 2014)
The solid waste generation in Sri Lanka has remarkably increased over the last decades without a proper management technology of the solid waste. The generation rate, collection and disposal of solid waste are functions ...
Sandarenu, P.C.; Peramunagama, S.W.; Samaraweera, G.C.; Amarasinghe, S.R(Faculty of Agriculture, University of Ruhuna, 2017)
The presence of waste is an indication of overconsumption and inefficiency of removing used materials.
Sustainable approaches need to be adopted for a proper waste management system. As an attempt to
address this issue, ...
Amarasinghe, S.R.; Wanniarachchi, S.D.; Weralugolla, S.S.S.; Peramunagama, S.S.M,(Eastern University of Sri Lanka, 2017-10-06)
The availability of phosphorus (P) in acid soils is comparatively less compared to other macro-nutrients. However to obtain high crop yields on acid soils high amount of P is required. Thus, it is vital to determine the ...
Amarasinghe, S.R; Gunawardhana, L.A.A.S.M,(Effect of vermicompost with inoculated biochar on Carbon and Nitrogen mineralization in Ultisols and Alfisols., 2020)
Abstract— Organic amendments provide
good nutritional input to the soil by
maintaining environmental sustainability.
Availability of nutrients are less due to soil
salinization and acidity in Alfisols and Ultisols, ...
Amarasinghe, S.R.; Watanabe, K,(Faculty of Agriculture, University of Ruhuna, 2011-11-09)
Estimation of unsaturated soil hydraulic properties (USHP) is beneficial to evaluate the movement of flow and pollutant/solute transport in vadose zone. However, it is a difficult and time consuming task in soil physics. ...
Amarasinghe, S.R.; Watanabe, K(University of Sri Jayawardenepura, 2012)
For the long-term isolation of hazardous nuclear waste the sedimentary soft rock can be utilized as a host rock. This hazardous waste can be stored in deeply excavated tunnels. However, the formation of high permeable ...