Four different water sources (irrigation canals, small reservoirs, shallow wells, and tubewells), used for domestic purposes, in an irrigated area in southern Sri Lanka, were tested for Giardia spp. cysts and Cryptosporidium spp. oocysts. Identification of these parasites in water sources is important as these are increasingly recognized as causative agents of waterborne diarrhoeal disease. All...

waterborne epidemics of viral diseases have occurred and been reported over the years, and isolation of viruses from water of different sources has been made possible by different methods of concentration. it is now believed that bacterial parameters of water purity may not provide an adequate index as to the safety from a virological point of view. in this study eight samples from four main te...

In the Sub-Saharan African region of the River Niger Basin, where none of the major rivers is fully contained within the borders of a single nation, riverine ecosystem health monitoring is essential for survival. Even the globally proclaimed goals of sustainability and environmental security in the region are unattainable without using geospatial technologies of remote sensing and Geographic In...

The paper is devoted for origin of microplastics in aquatic environment and possible methods characterization analysis. According to US National Oceanic Atmospheric Administration, are synthetic organic polymer particles with a size less than 5 mm. Microplastics pollution significant ecological problem the world. A lot surface waters significantly polluted by various types microplastics. These ...

Various potential causes of damping pressure waves in water-hammer-like flows are discussed, with special attention being paid to their qualitative influences on measured histories. A particular purpose is highlight complications encountered when attempting interpret unexpected behaviour pipe systems. For clarity, each cause considered isolation even though two or more could exist simultaneousl...

Fluxes of carbon, nitrogen, and water between ecosystem components and organisms have great impacts across levels of biological organization. Although much progress has been made in tracing carbon and nitrogen, difficulty remains in tracing water sources from the ecosystem to animals and among animals (the "water web"). Naturally occurring, non-radioactive isotopes of hydrogen and oxygen in wat...