نتایج جستجو برای: or other dissolved solids are added

تعداد نتایج: 7159416  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1392

abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2008
Gideon Oron Leonid Gillerman Amos Bick Yossi Manor Nisan Buriakovsky Joseph Hagin

Field experiments were conducted in agricultural fields in which secondary wastewater of the City of Arad (Israel) is reused for irrigation. For sustainable agricultural production and safe groundwater recharge the secondary effluent is further polished by a combined two-stage membrane pilot system. The pilot membrane system consists of two main in row stages: Ultrafiltration (UF) and Reverse O...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1388

هدف تحقیق حاضر بررسی تاثیر نشانه های فرا گفتمان متنی بر فهم متون انگلیسی به وسیله ی زبان اموزان فارسی زبان است.این تحقیق علاوه بر این کوشیده است تا میزان اگاهی این زبان اموزان و نحوه ی تعامل انان را با متون خوانده شده در زبان انگلیسی به وسیله ی پرسش نامه ی تهیه شده بررسی کند.بر اساس محتوای یک متن انگلیسی یازده سوال درست /غلط طرح گردید و یک مرتبه با ان متن و یک مرتبه با نسخه ای که نشانه ها...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده ادبیات و علوم انسانی 1386

the purpose of the present study is to find out whether bilinguals of khuzestan-arab origin or monolinguals of iranian origin code-switch during learning or speaking english and which group is more susceptible to code-switch. to this end, the students of 24 classes from high schools and pre- university centers were screened out, and interviewed and their voices and code-switchings were recorded...

2012
Sukanchan Palit

Reverse osmosis (RO) is a ground breaking membrane based technology to purify water by separating the dissolved solids from feed stream resulting in permeate and reject stream for a wide arena of applications in domestic , industrial and wide array of applications. Reverse osmosis or other membrane separation processes has an innovative vision which is extremely targeted towards environmental p...

2012
Mark Saadeh Lucy Semerjian Nabil Amacha

This study aims to determine the extent of groundwater damage in the Upper Litani River Basin (ULRB) after years of water mismanagement and overfertilization in what is considered to be Lebanon's largest fertile area. Physical and chemical samples were collected between 2005 and 2010 and analyzed using "The Standard Methods for the Examination of Water and Wastewater" (APHA, AWWA) in order to d...

2002
Dennis McIntosh Kevin Fitzsimmons

Coastal aquaculture can contribute to eutrophication of receiving waters. New technologies and improved management practices allow the aquaculture industry to be more sustainable and economically viable. Current practices, however, do not provide an additional use for effluent water. Nitrogen, phosphorus and other effluent compounds could be valuable plant nutrients. Inflow and effluent water f...

Journal: :journal of advances in environmental health research 0
hassan hashemi research center for health sciences, shiraz university of medical sciences, shiraz, iran

the aim of this study was the increasing of leachate quality using integrated membrane bioreactor (mbr). the reactor was fed with treated leachate with overall 70-1360 mg/l chemical oxygen demand (cod). the analysis of cod, biochemical oxygen demand (bod5), total suspended solids (tss), and total dissolved solids (tds) were performed in feed and filtrate, whenever the system reached steady stat...

Journal: :Journal of Geoscience and Environment Protection 2022

The expected water mixing process between Red/Dead Sea during the proposed conveyance projects is main target of this research. project will ensue transporting Red to recover and maintain certain level Dead Sea, mostly reach -395 m. It found that, two different bodies with EC values or densities (salinities) are relatively divided by stable plane. This plane defined as BARZACH PLANE. In study, ...

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