نتایج جستجو برای: 155 groundwater samples were collected from lenjanat plain

تعداد نتایج: 7216457  

2003
Y. Zheng M. Stute A. van Geen I. Gavrieli R. Dhar H. J. Simpson P. Schlosser K. M. Ahmed

Detailed hydrochemical measurements, SSO4 and H analyses were performed on 37 groundwater samples collected during February 1999, January and March 2000 from 6 locations in eastern and southeastern Bangladesh to examine redox processes that lead to As mobilization in groundwater. The study sites were chosen based on available nation-wide As surveys to span the entire spectrum of As concentratio...

ژورنال: علوم آب و خاک 2022

Investigation and analysis of groundwater quality to monitor contamination and identify the most important pollutants and pollution points is one of the research fields. The objective of this research was to plan to improve groundwater quality on various spatial and temporal scales. Groundwater information of Maragheh-Bonab plain was collected from 26 wells in 10 years (2001-2011) with 454 samp...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1391

abstract pragmatics is the study of communicative action in its sociocultural context. communicative action includes not only using speech acts (such as apologizing, complaining, complimenting, and requesting), but also engaging in different types of discourse and participating in speech events of varying length and complexity. the present study aimed to investigate the assessment of pragm...

Groundwater quality regarding major anions and cations in the Birjand Plain located in the largest desert in Eastern Iran was monitored in this study. Fifteen boreholes were considered as sampling stations and the parameters pH, TDS, EC and major anions and cations were measured in groundwater samples. The dominant groundwater types can be introduced as sodium-chloride and magnesium-sulphate. T...

Journal: Pollution 2015

Groundwater quality regarding major anions and cations in the Birjand Plain located in the largest desert in Eastern Iran was monitored in this study. Fifteen boreholes were considered as sampling stations and the parameters pH, TDS, EC and major anions and cations were measured in groundwater samples. The dominant groundwater types can be introduced as sodium-chloride and magnesium-sulphate. T...

The purpose of this study was to evaluate the spatial changes of groundwater phosphate concentrations using geostatistical methods based on data from 10 groundwater wells. One of the conventional tools in decision making on the groundwater management is geostatistical method. To evaluate the spatial changes of phosphate concentrations in groundwater, the universal kriging method with cross-vali...

Journal: :اکو هیدرولوژی 0
حسین نوروزی کارشناس ارشد هیدروژئولوژی، دانشکدۀ علوم طبیعی، گروه علوم زمین، دانشگاه تبریز عطاالله ندیری استادیار هیدروژئولوژی، دانشکدۀ علوم طبیعی، گروه علوم زمین، دانشگاه تبریز اصغر اصغری مقدم استاد هیدروژئولوژی، دانشکدۀ علوم طبیعی، گروه علوم زمین، دانشگاه تبریز

the presence of heavy metals anomalies in groundwater resource and their effect on human health through both drinking water and agricultural activities is a serious worldwide. because of with the distribution of these elements in groundwater of malikan plain, the information does not exist, this study were performed to evaluate heavy metals, especially arsenic in groundwater and to determining ...

Meysam Alizamir, Soheil Sobhanardakani,

Background: The effects of trace elements on human health and the environment gives importance to the analysis of heavy metals contamination in environmental samples and, more particularly, human food sources. Therefore, the current study aimed to predict arsenic and heavy metals (Cu, Pb, and Zn) contamination in the groundwater resources of Ghahavand Plain based on an artificial neural network...

Meysam Alizamir Soheil Sobhanardakani,

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...

Journal: :محیط زیست طبیعی 0
سید حسین خزاعی عضو هیأت علمی دانشکده منابع طبیعی دریا، دانشگاه علوم و فنون دریایی خرمشهر، ایران نعمت ا... خراسانی استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران خلیل طالبی جهرمی استاد دانشکده کشاورزی، دانشگاه تهران، ایران مجید احتشامی استادیار دانشکده عمران، دانشگاه خواجه نصیرالدین طوسی، ایران

most areas of plain regions in mazandaran province are planted with rice, and different pesticides and fertilizers are used at high densities to increase the yield of production. diazinon is the main insecticide that being used to control chilo supressalis walker. the main problem is the high groundwater table in the region, and consumption of this water by local people and anthropogenic side e...

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