background: infections are readily transmitted as a result of bacterial contamination of swimming pools. therefore, hygiene and preventing the contamination of swimming pools is of particular importance. the objective of this study was to determine the amount of bacterial contamination in indoor pools of yazd in 2013. methods: in this descriptive and analytical study, all indoor swimming pools ...

The conversion of native ecosystems to residential dominated by lawns has been a prevailing land-use change in the United States over past 70 years. Similar development patterns and management cause many characteristics be more similar each other across broad continental gradients than that former ecosystems. For instance, lawn irrigation fertilizer applications potential influence soil carbon ...

fungi are found in different environments with variable distribution patterns depending on various factors. the aim of this study was determination of fungal contaminants in public swimming pools in uromia, iran. the fungal contaminations of four indoor swimming pools were studied by using membrane filtration and swab sampling method. samples were collected by a manual plastic pump, in a 200 ml...

this study aimed at application of optimization standards of water consumption in swimming pools of urmia. for this purpose, all 13 swimming pools of urmia were studied as the statistical sample of the study. the data were collected through a questionnaire and a checklist obtained based on the standards of standard institution and industrial studies (1388) and the office of national legislation...

Background: Infections are readily transmitted as a result of bacterial contamination of swimming pools. Therefore, hygiene and preventing the contamination of swimming pools is of particular importance. The objective of this study was to determine the amount of bacterial contamination in indoor pools of Yazd in 2013. Methods: In this descriptive and analytical study, all indoor swimming pools ...

in the face of limited water resources, better utilization and operation of irrigation networks is essential. use of control systems is considered as one of the most assured ways to achieve the aim. in the course of the present study, two centralized controllers are applied to the west canal of aghili irrigation district in i. r. iran. the proposed control algorithms consist of a distant downst...

The management of irrigation main canals are studied in this research. One way improving is designing an efficient automatic control system the water that flows through canal pools, which usually carried out by PI controllers. However, since pools systems with large time delays and nonlinear hydrodynamics, these PIs tuned a very conservative so closed-loop instability may appear depending on ch...