A METHOD FOR THE DETERMINATION OF ELECTRICAL CONDUCTIVITY WITH DIRECT CURRENT INSTRUMENTS.

estimation of apparent soil electrical conductivity using direct contact method

abstract wenner direct contact method is a method of estimating apparent electrical conductivity (eca) of agricultural soils in situ. this method can be affected by factors such as quality of electrodes in contact with soil, type of employed electric current, moisture content, clay content and compaction of soil. in this research, the effect of electrode type (rod and plate) and electric curren...

the innovation of a statistical model to estimate dependable rainfall (dr) and develop it for determination and classification of drought and wet years of iran

آب حاصل از بارش منبع تأمین نیازهای بی شمار جانداران به ویژه انسان است و هرگونه کاهش در کم و کیف آن مستقیماً حیات موجودات زنده را تحت تأثیر منفی قرار می دهد. نوسان سال به سال بارش از ویژگی های اساسی و بسیار مهم بارش های سالانه ایران محسوب می شود که آثار زیان بار آن در تمام عرصه های اقتصادی، اجتماعی و حتی سیاسی- امنیتی به نحوی منعکس می شود. چون میزان آب ناشی از بارش یکی از مولفه های اصلی برنامه ...

A Method for the Numerical Determination of Thermal Conductivity

Eddy current determination of the electrical conductivity-temperature relation of Cdl_xZn xTe alloys

A multifrequency eddy current sensor has been installed in a vertical Bridgman furnace and used to measure the electrical conductivity of Cd l_XZn,Te alloys (for x = 0, 0.045 and 0.08) as a function of temperature during heating and cooling through the melting transition. The conductivity of the x = 0.0 and 0.08 samples increased exponentially with temperature up to the melting point. A 4-6 fol...

evaluating the linear model of dielectric constant-electrical conductivity for estimation of soil solution electrical conductivity with tdr

abstract time domain reflectometry (tdr) is a widely used method for measuring the dielectric constant (ka) and bulk electrical conductivity (σa) in soils. the tdr-measured σa and ka can be used to calculate the soil solution electrical conductivity, (σp). a theoretical model describing a linear relationship between bulk electrical conductivity, σa, and dielectric constant, ka, in moist soil wa...