نتایج جستجو برای: ec and so4

تعداد نتایج: 16831501  

ژورنال: علوم آب و خاک 2019

Determination of water quality is an essential issue in water resources management and its monitoring and zoning should be considered as an important principle in planning. In this study, in order to investigate the quality of groundwater resources (springs, wells and qanats) in Semnan watershed, first, the water quality index for drinking and agricultural purposes was obtained by means of meas...

Journal: :International journal of economic and environment geology 2023

The study was conducted to evaluate the hydrogeochemistry of groundwater. Twenty-six groundwater samples were analysed for quality Chachro Taluka. EC and TDS contents in most water above WHO (2011) recommended limits. Almost all collected from dugwells located area have elevated concentrations Na Cl exceeding guidelines. Results Ca, Mg show that 92% 96% within prescribed limit respectively. Whe...

2011
Vinod Kumar A. K. Chopra

The effect of seven rates viz. 0 (control), 5, 10 25, 50, 75 and 100 ml/Kg of treated distillery effluent on the physico-chemical properties of soils was studied under natural environment in pot experiment. The characteristics of the soil were determined before and after 12 weeks of effluent irrigation. The results revealed that the 100% concentration of distillery effluent decreased BD (5.63%)...

Journal: :Journal of hazardous materials 2009
Siyue Li Quanfa Zhang

A total of 252 water samples were collected from 42 sites across the upper Han River basin during the time period from 2005-2006. Major ions (Cl(-), NO3(-), SO4(2-), HCO3(-), Na+, K+, Ca2+ and Mg2+), Si, water temperature, pH, EC and TDS were determined and consequently correlation matrix, analysis of variance, factor analysis and principal component analysis were performed in order to identify...

2011
Vinod Kumar

The effect of paper mill effluent on the physico-chemical properties of soils was studied under natural environment in pots experiment. The soil was treated to six rates of effluent viz. 5, 10 25, 50, 75 and 100 ml/Kg soil. The physico-chemical properties of the soil were determined before and at the end of the experiment, 12 weeks after irrigation with the effluent. Results revealed that among...

Journal: :Journal of environmental sciences 2010
Li Li Wu Wang Jialiang Feng Dongping Zhang Huaijian Li Zeping Gu Bangjin Wang Guoying Sheng Jiamo Fu

PM2.5 aerosols were collected in forests along north latitude in boreal-temperate, temperate, subtropical and tropical climatic zones in eastern China, i.e., Changbai Mountain Nature Reserve (CB), Dongping National Forest Park in Chongming Island (CM), Dinghu Mountain Nature Reserve (DH), Jianfengling Nature Reserve in Hainan Island (HN). The mass concentrations of PM2.5, organic carbon (OC), e...

Journal: :Catalysts 2023

Electrochemically (EC) assisted persulfate (PS) oxidation processes (EPOPs) have gained increasing attention in recent years. In this review, the current status and prospects of EC/PS degradation organic pollutants are discussed summarized. It was found that most contaminants could be significantly enhanced or accelerated using combination EC PS compared to single treatments. Moreover, effects ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1385

تجارت الکترونیکی شیوه اجرای مسئولیتها، تقابل با مشتریان و امور معمول عملیاتی در شرکتها را تغییر داده است. تجارت الکترونیکی در عمل تنها خرید و فروش کالاها را از طریق ابزار الکترونیک نمی باشد، بلکه تمام فعالیتهای لازم جهت انجام فرایند فروش را نیز در بر میگیرد. در اواخر دهه 1990 بسیاری از شرکتها فعالیتهای خود را به منظور دستیابی به مشتریان جدید و یا ارائه فرصتهای جدید به مشتریان موجود گسترش دادند...

Journal: :Horticulturae 2022

Hydrangea macrophylla exhibiting blue sepals (versus purple or pink) have improved marketability; however, little research has been conducted to evaluate aluminum (Al), the element responsible for bluing, on crop growth, effectiveness of bluing sepals, and characteristics flower clusters in an outdoor nursery. This study compared substrate Al availability, color, number, size over a 56-week per...

Journal: :Afyon Kocatepe University Journal of Sciences and Engineering 2022

Su sertliği; özellikle içme suları, endüstri suları ve hizmet suyu alanlarında kullanım hususunda önemli bir kalite özelliğidir. Kalsiyum (Ca), magnezyum (Mg) bikarbonat (HCO3) tuzları ile suyun geçici klor (CL), fosfat (PO43), nitrat (NO3), sülfat (SO4) silikat tuzlarıyla da kalıcı sertliği oluşmaktadır. Çalışmada, Fırat Havzası üzerinde bulunan 2119 nolu Kemahboğazı akım gözlem istasyonu (AGİ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید