نتایج جستجو برای: residual concentration

تعداد نتایج: 467766  

To study the sensitivity of chick pea, bean, lentil, rapeseed, sugarbeet and tomato to soil residual concentration of Idosulfuron-mesosulfurun herbicide, an experiment was carried out under controlled conditions at the College of Agriculture, Ferdowsi University of Mashhad, Iran, in 2010. The studied factors were the 6 mentioned crops, and 7 levels of soil residual concentration of Idosulfuron-...

A. H. Mahmoudi G. H. Farrahi, K. Minaii M. Chamani

In a shell and tube heat exchanger, the failure of tube-to-tubesheet welds results in high-pressure water jet which erodes the refractory in front of the tubesheet. Finite element method was employed to simulate the welding process and post weld heat treatment (PWHT) to find the factors affecting the failure in tube-to-tubesheet weldments. Residual stresses in two different geometries of tube-t...

One of the parameters responsible for decreased water quality in a distribution system is temperature changes. This study was conducted to examine the effect of temperature on pH, turbidity, and residual chlorine in Sanandaj, Iran, Water Distribution System. The required water samples were taken from 85 stations during April to October 2014. Sampling was carried out over 6 months and twice per ...

علیرضا کوچکی, , غلامحسین حق نیا, , فروزان طباطبایی یزدی, , محسن فروزان گهر, ,

Of all types of xenobiotics, pesticides such as herbicides play a significant role in soil and water pollution due to their widely usage all over the world. This study addresses the ability of organic amendments to enhance atrazine and metamitron degradation in two herbicide contaminated soils with contrasting textures under laboratory conditions. Soil samples were collected from surface soils ...

Journal: :تحقیقات نظام سلامت 0
علی احمد آقاپور کارشناس،گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی ارومیه، ارومیه، ایران. امیر محمدی کارشناس، گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی ارومیه، ارومیه، ایران.

background: today with population growing, surface water is one of the most important water resources used for domestic and industrial consumptions. in order to purify the surface water, coagulants materials are used. the purpose of this study was to assess the possibility of using poly aluminum chloride (pacl) in water refinery number 1 in city of orumieh and investigating its health effects. ...

ژورنال: علوم آب و خاک 2005
علیرضا کوچکی, , غلامحسین حق نیا, , فروزان طباطبایی یزدی, , محسن فروزان گهر, ,

Of all types of xenobiotics, pesticides such as herbicides play a significant role in soil and water pollution due to their widely usage all over the world. This study addresses the ability of organic amendments to enhance atrazine and metamitron degradation in two herbicide contaminated soils with contrasting textures under laboratory conditions. Soil samples were collected from surface soils ...

فلاح, سیف اله, صالحی, عالیه , قاسمی‌سیانی, نرگس ,

Application of organic manure in organic farming and long-term mineralization may lead to residual effects on the succeeding crop. So, residual effects of combined cattle manure and urea fertilizer of previous crop (black cumin) on growth and yield of pea were examined in a randomized complete block design. Treatments included of  cattle manure (CM), urea (U), three ratios of CM+U full dose app...

ژورنال: Hormozgan Medical Journal 2013
Aghamolaei, T. , Dindarloo, K. , Kheradpisheh, Z. , Madani, A.H. , Salehi Najafabadi, M. ,

Introduction: Chlorination has been used as a major disinfectant process for public drinking and swimming pool water in many countries. However, it was concern over the disinfection byproducts (DBPs) by the reaction of chlorine with organic material in water and the effect on human health. The purpose of this study was to determination trihalomethane concentrations in indoor swimming pools wate...

Journal: :زراعت دیم ایران 0
سیما پاکروان اصل گروه خاکشناسی، دانشگاه ارومیه، ارومیه، ایران غلامرضا ولیزاده موسسه تحقیقات کشاورزی دیم کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران عباس صمدی گروه خاکشناسی، دانشگاه ارومیه، ارومیه، ایران خشنود علیزاده موسسه تحقیقات کشاورزی دیم کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران جلیل اصغری موسسه تحقیقات کشاورزی دیم کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

this study was carried out to determine effects of phosphorus residual applied to wheat on vetch (vicia panonioca) growth, yields and some  soil  physical, chemical  properties in soil. the experiment was conducted with randomized completely block design in a field with three replications including four levels of p residual (applied for wheat p0, p15, p30, and p45 kg p2o5 in hectare) from tripl...

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