نتایج جستجو برای: gwqi

تعداد نتایج: 38  

Journal: :Sustainability 2022

Population growth, increasing urbanization and industrialization, mismanagement, climate change are accountable for the rising depletion pollution of groundwater worldwide. Consequently, water security, food environmental security in jeopardy, leading to a severe concern sustainable supply on Earth. The contamination groundwater, complex hidden resource, is difficult detect treat. Therefore, it...

Journal: :Water 2022

Water scarcity in the hill tract districts of Bangladesh becomes acute dry season as most streams, primary source water, up. However, groundwater, where available, can supply water throughout year. In this study, a total 37 samples were collected and analyzed from shallow (34) deep (3) wells Khagrachhari Sadar to assess their geochemical type suitability for drinking using multiparameter ground...

Journal: :environmental health engineering and management 0
vahid gholami department of range and watershed management, faculty of natural resources, university of guilan, rasht, iran marhemat sebghati department of range and watershed management, faculty of natural resources, urmia university, urmia, iran zabihollah yousefi department of environmental health engineering, faculty of health, mazandaran university of medical sciences, sari, iran

background: although experiments on water quality are time consuming and expensive, models are often employed as supplement to simulate water quality. artificial neural network (ann) is an efficient tool in hydrologic studies, yet it cannot predetermine its results in the forms of maps and geo-referenced data. methods: in this study, ann was applied to simulate groundwater quality and geographi...

ژورنال: :دانش و تندرستی 0
allahbakhsh javid1 1- dept. of environmental health engineering, school of public health, shahroud university of medical sciences, shahroud, iran. niloufar ghomimaghsad2 2- student research centre, school of public health, shahroud university of medical sciences, shahroud, iran. aliakbar roudbari3 3- center for health-related social and behavioral sciences research, shahroud university of medical sciences, shahroud, iran.

مقدمه: باتوجه به آنکه منابع آب زیرزمینی عمده ترین منابع تأمین آب شهرستان گرمی به شمار می رود لذا اطمینان از مطلوبیت آن به منظور حفظ سلامت مصرف کنندگان، اهمیت فراوانی دارد لذا هدف این مطالعه، بررسی وضعیت کیفی آب های زیرزمینی منطقه گرمی با استفاده از شاخص gwqi (شاخص کیفی آب زیرزمینی) و پهنه بندی آن با سامانه اطلاعات جغرافیایی ( gis ) می باشد. مواد و روش ها: این مطالعه از نوع مطالعات توصیفی تحلیلی...

Journal: :Applied Water Science 2021

Abstract In recent years, groundwater pollution has become increasingly a serious environmental problem throughout the world due to increasing dependency on it for various purposes. The Damodar Fan Delta is one of agriculture-dominated areas in West Bengal especially rice cultivation and constraint regarding quantity quality. present study aims evaluate quality parameters spatial variation inde...

Journal: :Water Resources Management 2021

Water quality experiments are difficult, costly, and time-consuming. Therefore, different modeling methods can be used as an alternative for these experiments. To achieve the research objective, geospatial artificial intelligence approaches such self-organizing map (SOM), neural network (ANN), co-active neuro-fuzzy inference system (CANFIS) were to simulate groundwater in Mazandaran plain north...

Journal: :Civil Engineering Journal 2023

The study aimed to appraise groundwater quality in the Mekong Delta using a index (GWQI) and estimate human health risks associated with consumption. Groundwater samples were collected at sixty wells distributed An Giang, Kien Hau Giang Dong Thap provinces. Twelve water parameters measured, including pH, total dissolved solids (TDS), hardness, coliform, nitrate (NO3ˉ), nitrite (NO2ˉ), ammonium ...

ژورنال: اکو هیدرولوژی 2020

‌آب‌های ‏زیرزمینی یکی از منابع مهم تأمین آب به‌خصوص در مناطق خشک و کم‌بارش به ‏شمار می‏رود. از این‏رو، تعیین کیفیت و پیش‏بینی آن امری ضروری است. مطالعۀ حاضر به ارزیابی کیفیت منابع آب ‏زیرزمینی و پیش‏بینی آن در آبخوان زنجان می‏پردازد. شاخص GWQI در پژوهش‌های پیشین، وزن‌دهی ساده بر پایۀ دیدگاه‌های کارشناسی بوده است. از این‌رو، در شاخص جدید (C-GWQI) برای تعیین وزن‏ها، از روش آنتروپی شانون و از تصمی...

عواملی همچون کاهش نزولات جوی، روشهای ناکارآمد در کشاورزی، تهدید منابع آبی با آلاینده ها و غیره، سبب شده است که مسئله تأمین آب با دو چالش کمی و کیفی مخصوصاً در مورد سفره های آب زیرزمینی مواجه شود. در شهرستان ملارد نیز آب های زیرزمینی منبع عمده تأمین آب می­باشند. اطلاعات مربوط به متغیرهای فیزیکو شیمیایی آب 9 چاه از شهرستان ملارد، طی دو دوره خشکسالی و ترسالی 1396 انتخاب شد....

Journal: :Environmental Earth Sciences 2023

Abstract The primary goals of this research are to detect the spatial variation hydrogeological characteristics and evaluate groundwater quality in eastern Nile River, Khartoum state, Sudan, using geophysical hydrochemical methods. Thirteen Vertical electrical soundings (VES), Schlumberger configuration, were measured along three profiles characterize aquifer. VES findings denoted that study ar...

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