نتایج جستجو برای: parameters of water quality

تعداد نتایج: 21273832  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده منابع طبیعی گرگان 1391

چکیده: در این تحقیق تأثیر ملاس که یکی از محصولات جانبی صنایع قند می باشد به عنوان یک افزودنی مقاومت خشک جدید در بهبود پالایش پذیری و ویژگی های فیزیکی و مکانیکی مقوای کنگره ای کهنه (occ) مورد بررسی قرار گرفته شد. بدین منظور پنج سطح ملاس( 0،5، 10، 15 و 18%) و سه سطح درجه روانی(420،400و320 میلی لیتر)به عنوان فاکتورهای متغیر در نظر گرفته شد و برای هر تیمار کاغذهای دست ساز با مساحت 2cm200 و وزن پای...

Abdolrahim Yusefzadeh, Ameneh Yusefzadeh, Edris Hoseinzadeh, Ghodratola Khorramabadi Shams, Hatam Godini, Mohammad Khoshgoftar,

Background & Aims of the Study: The use of qualitative indicators is one of the ways of water quality of river water. The purpose of this study is Khorramrood River of Khorramabad of water quality using water quality index (NSFWQI) and GIS that is a Geographic Information System . Materials & Methods: In this cross-sectional study, qualitative parameters needed to calculate NSFW...

Journal: :جغرافیا و مخاطرات محیطی 0

1. introduction inflation of population and rising living standards in many countries need to be enhanced the high quality water suitable for different uses such as agricultural, industrial and drinking sections. groundwater is one of the most important water supply sources which are encountered with many problems such as drawdown, recharge reduction due to low rainfall and different natural an...

Journal: :اکو هیدرولوژی 0
حامد روحانی استادیار گروه مرتع و آبخیزداری، دانشگاه گنبد کاووس الناز زکی دانشجوی کارشناسی ارشد مرتعداری، دانشگاه تربیت مدرس، نور مجتبی کاشانی مربی گروه آمار، دانشگاه گنبد کاووس ابولحسن فتح آبادی استادیار گروه مرتع و آبخیزداری، دانشگاه گنبد کاووس

information on water quality and pollution sources is important for the implementation of sustainable water resource management strategies. in this research, to evaluate spatial variation and the interpretation of large complex water quality data taken at seven different sites along the gorganrood river were subjected to multivariate statistical analysis. the factor analysis generated two signi...

Background and purpose: Monitoring quality of rivers water and awareness of its health status over time and identifying vulnerable zones are considered as essential steps towards sustainable development and efficient management of the environment. This study used multivariate statistical methods for analyzing water quality and awareness of rivers state in the Mazandaran province, Iran. Materia...

Journal: :iranian journal of environmental sciences 0
anila ajayan environmental biology division, department of botany, mahatma gandhi college, thiruvananthapuram kerala 695 004 ajit kumar environmental biology division, department of botany, mahatma gandhi college, thiruvananthapuram kerala 695 004

the surface water chemistry of thiruvananthapuram museum lake was carried out in the period of february 2013 to january 2014. correlation study of the parameters and overall ccme wqi (canadian council of ministers of the environment water quality index) was also prepared in the study for the lake water. the parameters analysed are cations such as ca2+, na+, mg2+ and k+ and the anions like po4-,...

Journal: :بهداشت و توسعه 0
منصوره دهقانی استادیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت و تغذیه، دانشگاه علوم پزشکی شیراز، شیراز، ایران محمد دوله کارشناس ارشد مهندسی محیط زیست، دانشگاه آزاد اسلامی بندرعباس، بندرعباس، ایران حسن هاشمی مربی، گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شهرکرد، شهرکرد، ایران نرگس شمس الدینی دانشجوی کارشناس ارشد، گروه مهندسی بهداشت محیط، دانشکده بهداشت و تغذیه، دانشگاه علوم پزشکی شیراز، شیراز، ایران mansoureh deghani assistant professor, department of environment health engineering, school of health and nutrition, shiraz university of medical sciences, shiraz ,iran mohammad doleh master of environment engineering, islamic azad university, bandar abbas branch, bandar abbas, iran

background: desalination plants have an important role in providing community drinking water. the increasing trend of water consumption and decrease of natural resources of fresh water make this role even more important. the aim of this study was to evaluate the quality of inlet and outlet water of desalination plants by reverse osmosis (ro) process in qeshm, iran and also to compare the qualit...

George Morara Ogendi, George Owuor, Mahamadou Moussa Keita, Wycliff N. Nyamao,

Introduction: Unsustainable natural resources utilization is on the increase in the developing countries thus the ability of many local communities to meet their basic needs including food, water and shelter is jeopardized. Uncontrolled gold-mining in Sikasso region is one such an anthropogenic activity that is of great environmental concern to the local and national governments of Mali owing t...

حسین‌زاده , ادریس , حسین‌زاده, سامان, خرسندی , حسن , رحیمی, ناصر, علیپور, مهدی,

    Background & Aims : Water Quality Indices are one of the methods can be used in water quality management as a useful tool in decision making, so this study carried out on evaluating the quality of the Aydughmush river by National Sanitation Foundation Water quality (NSFWQI) and River Pollution Indices (Liou).   Materials & Methods : In this cross sectional study standard field parameters in...

ژورنال: سلامت و محیط زیست 2016

Background and Objective: Human health depends on clean and safe drinking water more than anything. In Bilverdi Plain, the main source of drinking water is groundwater that has got a low quality in some places. Therefore, the drinking water of this area needs detailed evaluation of quality. In this research, the drinking water of Bilverdi Plain was evaluated based on fuzzy and deterministic met...

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