نتایج جستجو برای: water
تعداد نتایج: 550729 فیلتر نتایج به سال:
background: due to the lack of proper rail road and air transportation, most commutes in iran are carried out by buses. in most cases, the water in the busses is used for passengers for drinking usage. although this kind of water source has provided convince for the travelers, it could be a great risk in disease outbreak. the aim of this study is to determine the water quality in commuting buse...
the zarivar lake a freshwater lake in west of kurdistan province is home for large number of native plant and animal species therefore water quality and health of the lake are vital for conservation of these species. the present study aimed at evaluation of the zarivar lake using nsf- wqi as an indicator of water quality. wqi is a suitable tool to examine and classify spatial and temporal varia...
this study was conducted to evaluate the impact of deficit irrigation and growth stages on yield and yield components of potatoes and water use efficiency. a field experiment was conducted at shahrekord agricultural research station over three years of crop seasons using a randomized complete block design with three replications. plots were assigned to five levels of deficit irrigation treatmen...
fuzzy water quality index (fwqi) was applied in order to assess the degree of drinking water resources in yazd province, iran. thisstudy has also offered the creation of a new fuzzy water quality index (fwqi) to evaluate this tool’s applicability. 12 chemicalparameters including toxic and non-toxic heavy metals measured in 71 groundwater samples collected from drinking water resourcesin rural a...
phytoplankton and zooplankton concentrations in pishin reservoir are predicted employing a three-dimensional numerical model in this paper. modeling is performed using a numerical model based on mass transport equation. advection, diffusion and source/sink processes are considered as separate subroutines for predicting the concentrations of phytoplankton and zooplankton in the reservoir. finit...
population’s exponential growth along with drought has increased water resources limitation, especially in arid and semi-arid area. therefore, the use of non-conventional water is an important tool for water resource management. if unconventional water has no negative impact on soil properties and water, it can be used for irrigation coupled with desertification projects. so, this paper tries t...
human activities in the recent years have considerably increased the rate of water pollution in many regions of the world. in this case study, the main sources of wastewater discharging into the gargar river were identified. using river and point source flow rates and water quality parameters measured along the river, the river water quality was simulated using a commonly used, one-dimensional ...
In Northern Thailand, incidences of fluorosis resulting from the consumption of high-fluoride drinking-water have been documented. In this study, we mapped the high-fluoride endemic areas and described the relevant transport processes of fluoride in enriched waters in the provinces of Chiang Mai and Lamphun. Over one thousand surface and sub-surface water samples including a total of 995 collec...
A. GENERAL Water diversion is presumed to be caused by the Customer receiving the benefit of service from the diversion. Whenever the Utility has determined that water diversion is occurring or a hazardous condition exists at a given location, the Utility shall investigate and may disconnect the service immediately. In order to restore service discontinued under the provisions of Section B abov...
در این مطالعه اثر آب الکترولیز شده خنثی برروی برخی از باکتری¬های مهم منتقله از راه مواد غذایی شامل سالمونلا اینتریتیدیس، استافیلوکوکوس اورئوس، لیستریا مونوسیتوژنز و اشرشیاکلی بررسی شد. جهت انجام این مطالعه از آب الکترولیز شده خنثی در دما¬های مختلف از جمله 4، 23، 37و 50 درجه سانتیگراد و زمان¬های متفاوت غوطه¬وری شامل صفر، 1، 3 ، 5 ، 7 ، 10 دقیقه استفاده شد. برخی از الزامات مورد نیاز برای یک ضدعفو...
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