نتایج جستجو برای: 27 samples were collected from groundwater resources in september 2014
تعداد نتایج: 18049938 فیلتر نتایج به سال:
OBJECTIVE To assess the extent of arsenic contamination of groundwater and surface water in Peru and, to evaluate the accuracy of the Arsenic Econo-Quick(™) (EQ) kit for measuring water arsenic concentrations in the field. METHODS Water samples were collected from 151 water sources in 12 districts of Peru, and arsenic concentrations were measured in the laboratory using inductively-coupled pl...
Background and purpose: Nitrite and nitrate are considered as pollutant agents of ground water resources that cause several hygienic complications. Agricultural fertilizers that contain nitrate are widely used in north of Iran. This study was carried out to determine the concentrations of nitrite and nitrate in agricultural and drinking water wells in rural areas in Miandoroud, Iran. Materia...
in this study, the relationship between teachers’ creative and critical thinking skills and their reflectivity in teaching was investigated. to this end, three questions were raised. these questions were intended to determine whether there was a significant relationship between teachers’ creative thinking skills and their reflectivity in teaching; whether there was a significant relationship be...
Nowadays 90% of the required water of Iran is secured with groundwater resources and forecasting of pollutants content in these resources is vital. Therefore, this research aimed to develop and employ the feedforward artificial neural network (ANN) to forecast the arsenic (As), lead (Pb), and zinc (Zn) concentration in groundwater resources of Asadabad plain. In this research, the ANN models we...
Hydrogeological investigation have been carried out in Dantewada district. Groundwater samples were collected from selected locations in month of September 2013 and analyzed for major and minor cations & anions. Piper Diagram identified Ca-Mg-HCO3 dominantin water in most of the samples. The dominance of anions and cations were of the order of HCO3 > SO4 2>Cl > NO3 > PO4 2and Mg 2+ >Ca 2+ > Na ...
abstract: proverbs are of the language materials which of the food of any language depends on the quality and quantity of these same materials. in the present research, the researcher tried to present the ramsarian proverbs according to four variables of color, fruit, plantsand animals that selected from the book of the members of each of these four variables, put them into the spss system fo...
In the present study, we investigated biological characteristics and population dynamics of long-spined tripodfish, Pseudotriacanthus strigilifer, in coastal waters of Hormozgan province. A total of 391 fish samples were collected from September 2014 until September 2015 by the set net of Moshta. Length frequency data were analyzed using FiSAT software and ELEFAN 1 method. The longest and the s...
this study examined the effects of collaborative strategic reading and direct instruction in persuasion on iranian high school students persuasive writing and attitudes. students in three intact classes were assigned to one of three treatment conditions: collaborative strategic reading and direct instruction in persuasion or direct instruction in persuasion or a control group. treatment effects...
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...
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...
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