نتایج جستجو برای: water quality standard

تعداد نتایج: 1704360  

ژورنال: Medical Laboratory Journal 2014
Chegeny, M, Darabi, M, Jahani Zadeh, SH,

Abstract Background and Objective: Quality control of drinking water is important for maintaining health and safety of consumers, and the first step is to study the water quality variables. This study aimed to evaluate the chemical and physical indicators, water quality variables and qualitative classification of drinking water stations and water sources in Boroujerd. Material and Methods...

Journal: :jundishapur journal of health sciences 0
ghodratola khoramabadi shams department of environmental health, school of health, lorestan university of medical sciences, khorramabad, ir iran abdolrahim yusefzadeh young researchers and elite club, sardasht branch, islamic azad university, sardasht, ir iran; young researchers and elite club, sardasht branch islamic azad university, sardasht, ir iran. tel: +98-9143425434, fax: +98-4444375585 hatam godini department of environmental health, school of health, lorestan university of medical sciences, khorramabad, ir iran edris hoseinzadeh department of environmental health, faculty of medicine, tarbiat modares university (tmu), tehran, ir iran mohammad khoshgoftar vice-chancellery of health, shahroud university of medical sciences, shahroud, ir iran

conclusions according to the average of wqi index, quality of water was good in station number one, medium in station number two, and bad in the rest of stations. according to the wilcox index, qualities of water in third station were medium and in the rest were good. results by using wqi, the best water quality was reported in station number one with the scalar quantity of 71.11 (water with be...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و علوم انسانی 1393

چکیده پارامترهای ژئومورفیک از عوامل تعیین کننده و تاثیر گذار بر کیفیت اکولوژیکی رودخانه ها هستند. کیفیت فیزیکی و شیمیایی آب رودها می‏تواند متاثر از لیتولوژی موجود در حوضه آبریز ، جنس رسوبات حمل شده به رودخانه و عوامل زیستی باشد. در این تحقیق، پارامترهای تاثیر گذار بر کیفیت شیمیایی آب رودخانه کرج در دو ایستگاه سیرا و بیلقان مورد بررسی قرار گرفته است. با استفاده از ایستگاه های هیدرومتری موجود بر...

Journal: :international journal of environmental research 0

groundwater is the main source of potable water in most areas of mazandaran province, like sari and babol city. thus the safety of groundwater supplies is very important in these regions. unfortunately attention to groundwater quality has remained limited in iran. in recent years, the growth of industry, technology, population, and water use has increased the stress upon both land and water res...

Journal: :اکو هیدرولوژی 0
حسین یوسفی استادیار دانشکدۀ علوم و فنون نوین، دانشگاه تهران علی محمدی دانشجوی کارشناسی ارشد مهندسی اکوهیدرولوژی، دانشکدۀ علوم و فنون نوین، دانشگاه تهران یونس نوراللهی استادیار دانشکدۀ علوم و فنون نوین، دانشگاه تهران سید جواد ساداتی نژاد دانشیار دانشکدۀ علوم و فنون نوین، دانشگاه تهران

water quality in each area, indicates the impact of geology, climate and anthropogenic pollutants. monitoring of water quality in most cases result in complex data which shows the perfect act of water resources, so they need appropriate method for analyzing. in this study hydro-chemical evaluation of hiv basin which located in west of hashtgerd have been done. to measure the concentration of ma...

ززولی, محمد علی, طبری‌نیا, فرزانه, طبری‌نیا, هاجر, قلی نیا, همت, کوشکی, زهره ,

Abstract Background and purpose: Nowadays, tendency to consume bottled water shows significant growth due to increase of demand for safe drinking water, limited resources of fresh water and the public beliefs about the quality of bottled water. The aims of this study were to evaluate the microbial and physicochemical quality of bottled water in Mazandaran province and their heavy metal conce...

Journal: :jundishapur journal of health sciences 0
mohammad ali zazuli department of environmental health, school of health and research centre of health sciences, mazandaran university of medical sciences, sari, ir iran nour mohammad beyramnezhad department of environmental health, school of health and research centre of health sciences, mazandaran university of medical sciences, sari, ir iran nour mohammad beyramnezhad department of environmental health, school of health and research centre of health sciences, mazandaran university of medical sciences, sari, ir iran ghorban mohammad onagh health centre of bandar torkman, mazandaran university of medical sciences, bandar torkman, ir iran yousof kor health centre of bandar torkman, mazandaran university of medical sciences, bandar torkman, ir iran mahmoud taghavi department of environmental health, school of health and research centre of health sciences, mazandaran university of medical sciences, sari, ir iran

fluoride is one of the most important elements in the composition of teeth and bones. this element can enter the body via different ways. however, drinking water is the most important way to receive fluoride by a lot of people. an increase in fluoride level in the body causes dental fluorosis and its absence leads to teeth decay. standard rate of fluoride in drinking water is determined by the ...

Journal: :iranian journal of environmental sciences 0
abderrezak krika department of environmental sciences and agronomic sciences, faculty of nature life and sciences, university of jijel bp 98 ouled aissa, jijel 18000, algeria fouad krika department of process engineering, faculty of technology, university of laghouat, bp 37g, laghouat 03000, algeria

djendjen river is one of the largest rivers in the region of jijel (algeria). human activities such as urban discharges, industrial, agricultural, and livestock have significant effects on the quality of water. the present study attempts to evaluate the quality of water along the banks of the djendjen river at different sampling sites, using physico-chemical and bacteriological methods. the col...

In Nigeria irrigated agriculture is an important tool for economic growth, food security, and poverty reduction during dry periods of rain-fed agriculture. The concentration and composition of dissolved constituents in water determines its quality for irrigation use. Water quality studies strongly suggest that agriculture is a leading source of water quality problems, due to pesticides and othe...

Journal: :global journal of environmental science and management 2016
s. sharma r.c. chhipa

water is a unique natural resource among all sources available on earth. it plays an important role in economic development and the general well-being of the country. this study aimed at using the application of water quality index in evaluating the ground water quality innorth-east area of jaipur in pre and post monsoon for public usage. total eleven physico–chemical characteristics; total dis...

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