background the chemical and physical quality of water used for dialysis fluid is a vital factor in the patients overall care who receive dialysis. therefore, the water used for this purpose must be treated with advanced methods before being used for dialysis. conclusions the evaluation of hemodialysis water quality showed that these hospitals were not significantly polluted and the water qualit...

Proper identification of water quality conditions in a river system based on limited observations is an essential task for meeting the goals of environmental management. Various classification methods have been used for estimating the changing status and usability of surface water in river basins. However, a discrepancy frequently arises from the lack of a clear distinction between each water u...

abstract in order to optimize the water management in agriculture in semi arid and arid conditions water-salinity function should be evaluated. in order to evaluate salinity and deficit irrigation two experiments were conducted in 2008 and 2009. kochia was grown with six levels of saline water (1.5, 7, 14, 21, 28, and 35 ds/m) and three levels of applied water (25, 75, and 125 percent of the wa...

development of water resources projects are recognized as a basis of the development planning in the water resources sector. in addition to the quality of output results, following the schedule , continuous documentation and evaluation during the project is the one of the major challenges. in order to improve water study framework with high quality and scheduling and reduce the study process, t...

To overcome the shortcomings of the traditional methods of water quality evaluation, in this paper, a novel model combines particle swarm optimization (PSO), chaos theory, self-adaptive strategy and back propagation artificial neural network (BP ANN) that was proposed to evaluate the water quality of Weihe River in China. An improved PSO algorithm with a self-adaptive inertia weight and a chaot...