نتایج جستجو برای: electrical conductivity (ec)

تعداد نتایج: 264877  

Journal: :international journal of environmental research 0

ground water samples from different upazilas of sunamganj district have been analyzed for drinking and irrigation purposes. correlation coefficients among different parameters were determined. an attempt has been made to develop linear regression equations to predict the concentration of water quality constituents having significant correlation coefficients with electrical conductivity (ec). ca...

Journal: :journal of rangeland science 2012
ghasem ali abarsaji mohammad mahdavi mohammad hassan jouri

soil salinity is one of the important factors which can influence the growth anddistribution of plant species. saline and alkaline rangelands of golestan province, iran withlow-deep underground water level are considered as a halophyte plant species growing area.attempts have been made to determine soil salinity and its relationship with frankenia hirsutal. in order to determine the electrical ...

دهقانی, رضا, قربانی, محمدعلی,

     Electrical conductivity (EC) is an important factor in river engineering, especially studying of river water quality. In this study we studied and evaluated wavelet neural network to predict the electrical conductivity of the Kakareza river (in lorestan), and the results were compared with results of artificial neural network model. For this purpose, hydrogen carbonate, chloride, sulfate, ...

2012
Elia Scudiero Antonio Berti Pietro Teatini Francesco Morari

Capacitance and resistivity sensors can be used to continuously monitor soil volumetric water content (θ) and pore-water electrical conductivity (EC(p)) with non-destructive methods. However, dielectric readings of capacitance sensors operating at low frequencies are normally biased by high soil electrical conductivity. A procedure to calibrate capacitance-resistance probes in saline conditions...

Ghasem Ali Abarsaji Mohammad Hassan Jouri, Mohammad Mahdavi,

Soil salinity is one of the important factors which can influence the growth anddistribution of plant species. Saline and alkaline rangelands of Golestan Province, Iran withlow-deep underground water level are considered as a halophyte plant species growing area.Attempts have been made to determine soil salinity and its relationship with Frankenia hirsutaL. In order to determine the Electrical ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2008
maryam moshkelani mohammad chalkesh amiri

in the present  paper electrical conductivity (ec) of colloidal gas aphron (cga) suspensions was measured for anionic and cationic surfactants (sodium dodecyl sulfate (sds) and tetradecyl trimethyl ammonium bromide (ttab)). experiments were made for different concentrations of sds (6, 8.1, 10 mm) and ttab (2, 3.51, 5 mm). cga drainage behavior was observed and measured using 1 liter measuring c...

2005
Shmulik P. Friedman

The most common method for in situ assessment of soil salinity, namely the electrical conductivity (EC) of the soil solution (ECw), is to measure the apparent electrical conductivity (ECa) and volumetric water content (θ) of the soil and apply measured or predicted ECa(ECw, θ) calibration curves. The water content and electrical conductivity of a soil solution are indeed the major factors affec...

Journal: :Jurnal Ilmiah Teknologi Pertanian Agrotechno 2020

Maryam Moshkelani, Mohammad Chalkesh Amiri

In the present  paper Electrical Conductivity (EC) of Colloidal Gas Aphron (CGA) suspensions was measured for anionic and cationic surfactants (Sodium Dodecyl Sulfate (SDS) and Tetradecyl Trimethyl Ammonium Bromide (TTAB)). Experiments were made for different concentrations of SDS (6, 8.1, 10 mM) and TTAB (2, 3.51, 5 mM). CGA drainage behavior was observed and measured using 1 liter measuri...

Journal: :desert 2008
m. jafari m. souri h. azarnivand m. makhdom v. etemad

soil salinity is one of the problems threatening agricultural lands. parts of this phenomenon are related to geologic formations and saltpans, while some major factors are resulted from irrelevant agricultural activities, issue of irrigation, and improper cultivation systems which lead to increase in soil salinity. to avoid such consequences that would end up with ecosystem degradation, suitabl...

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