نتایج جستجو برای: while ec electrical conductivity

تعداد نتایج: 1301133  

1995
Peter J. Vaughan Scott M. Lesch

A geostatistical analysis of soil salinity in an agricultural area in the San Joaquin Valley included measurements of electrical conductivity of soil paste extract (EC3 and water content of soil samples supplemented by surface measurements of apparent electrical conductivity (EM”). Prediction of soil salinity at unsampled points by cokriging log@C3 and EMa is worthwhile because EM” measurements...

2002
J. G. Smith K. A. Watson C. M. Thompson J. W. Connell

Low solar absorptivity, space environmentally stable polymeric materials possessing sufficient electrical conductivity for electrostatic charge dissipation (ESD) are of interest for potential applications on spacecraft as thin film membranes on antennas, solar sails, large lightweight space optics, and second surface mirrors. One method of imparting electrical conductivity while maintaining low...

Journal: :Science 2004
Lei Lu Yongfeng Shen Xianhua Chen Lihua Qian K Lu

Methods used to strengthen metals generally also cause a pronounced decrease in electrical conductivity, so that a tradeoff must be made between conductivity and mechanical strength. We synthesized pure copper samples with a high density of nanoscale growth twins. They showed a tensile strength about 10 times higher than that of conventional coarse-grained copper, while retaining an electrical ...

2013
Francesco Marra

The aim of this work was to compare the effects of freezing rate on electrical conductivity of potatoes, carrots and apples. Electrical conductivity tests were conducted on a custom ohmic cell while samples texture was measured by means of a universal testing machine. The raw un-pretreated samples were used as control. This study showed that freezing pre-treatments lead to differences in electr...

al. et E. Khosropour

This research was carried out in order to quantify throughfall (TF) and interception loss (I) and to compare the chemical composition of TF, i.e. lead (Pb) and cadmium (Cd) as well as electrical conductivity (EC) and pH beneath Pinus eldarica and Cupressus arizonica plantations and the open field rainfall. The research was accomplished in the Chitgar Forest Park, a semi-arid polluted urban area...

Ahmad Poormirzaei Mohsen Mohseni Reza Bagheri, Vahid Ebrahimian,

In order to study of ecological and phenological traits of Ferulago angulata asan important medicinal plant, this research was conducted in Hezar Mountains andBondareh Henza in Kerman province, Iran. Random samples of this plant were taken andtheir vegetation habitat conditions and their growth characteristics including height ofcollar leaves, height of flower stem, flower stem number and forag...

Journal: :caspian journal of environmental sciences 2013
al. et e. khosropour

this research was carried out in order to quantify throughfall (tf) and interception loss (i) and to compare the chemical composition of tf, i.e. lead (pb) and cadmium (cd) as well as electrical conductivity (ec) and ph beneath pinus eldarica and cupressus arizonica plantations and the open field rainfall. the research was accomplished in the chitgar forest park, a semi-arid polluted urban area...

Journal: :Environmental monitoring and assessment 2009
S B Hulyal B B Kaliwal

The present investigation deals with limnobiotic status of the Almatti reservoir from February, 2003 to January, 2005. The study revealed that there exists a fluctuations of the physical factors viz., rainfall, humidity, air and water temperature, pH and electrical conductivity (EC), and chemical factors viz., dissolved oxygen (DO), free carbon dioxide, total alkalinity, total hardness, calcium...

Journal: :Tanzania journal of science 2022

Springs on the eastern and western shores of Lake Natron Basin (LNB), located within branch East Africa Rift System (EARS) in Northern Tanzania had a discharge temperature that ranged between 34.0 °C 51.2 °C, while pH varied from 8.0 to 10.7. The electrical conductivity (EC) 5,007 µS/cm 49,200 µS/cm. Cold waters 31.9 32.5 8.3, EC 1,401 3,806 stable isotope composition -2.4 ‰ -5.3 for δ18O, -15....

Journal: :Journal of environmental quality 2005
Girisha K Ganjegunte George F Vance Lyle A King

Land application of coalbed natural gas (CBNG) co-produced water is a popular management option within northwestern Powder River Basin (PRB) of Wyoming. This study evaluated the impacts of land application of CBNG waters on soil chemical properties at five sites. Soil samples were collected from different depths (0-5, 5-15, 15-30, 30-60, 60-90, and 90-120 cm) from sites that were irrigated with...

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