Results 211 to 220 of about 33,091 (257)
Analysis of Soil Ionization Behaviors under Impulse Currents
Journal of Electrical Engineering and Technology, 2009 This paper presents the characteristics of soil ionization for different water contents, and the parameters associated with the dynamic properties of a simple model grounding system subject to lightning impulse currents. The laboratory experiments for this study were carried out based on factors affecting the soil resistivities.
Bok-Hee Lee
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Influence of ionized saline water on soil water and salt transport in saline soils
Irrigation and Drainage, 2022AbstractThe utilization of saline water plays an important role in agricultural production in saline areas to overcome freshwater shortages. Ionized saline water might alleviate the adverse effects of salinity on soil and plants. In this study, field experiments were conducted to study the effect of ionized saline water on the soil water content and ...
Kai Wei +5 more
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Prediction of the Adsorption of Ionizable Pesticides in Soils
Journal of Agricultural and Food Chemistry, 2007Adsorption of six acidic and four basic pesticides was measured in nine temperate soils.
Kah, Mélanie, Brown, Colin
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Thermodynamic studies for adsorption of ionizable pharmaceuticals onto soil
Chemosphere, 2014Although pharmaceutical compounds (PCs) are being used more and more widely, and studies have been carried out to assess their presence in the environment, knowledge of their fate and behavior, especially under different environmental conditions, is still limited.
Joanna Maszkowska +5 more
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EFFECT OF IONIZING RADIATION ON SOIL MICROORGANISMS
Soil Science, 1961The effects of neutron and gamma radiation on soil bacteria, actinomycetes, and fungi, and on nitrifying bacteria, nitrogen fixation, and CO/ sub 2/ evolution were studied. Soil samples from alfalfa and ammonia-treated soils at two moisture levels were exposed at a dosage of 4.13 x 10/sup 12/ neutrons per cm/sup 2/ and a mean gamma dosage of 3.4 x 10 ...
RICHARD STANOVICK +2 more
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Laser Two-Photon Ionization of Pyrene on Contaminated Soils
Analytical Chemistry, 1996We report a first attempt to use the laser multiphoton ionization method for analysis of trace aromatic compounds on the surface of environmental (soils) and artificial (silica) samples. The measurement setup is composed of a N(2) pulsed laser and a fast conductivity detection system.
V V, Gridin +3 more
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An improved model for soil ionization around grounding system and its application to stratified soil
Journal of Electrostatics, 2004An improved model for taking into account the effect of the soil ionization around grounding system under lightning strike is proposed in this paper. In this model, the soil ionization region is assumed to retain 7% of its pre-ionization resistivity, which is consistent with the experimental results on soil ionization found in literature (Trans.
Nelson Theethayi, Rajeev Thottappillil
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Grounding Systems Modeling Including Soil Ionization
IEEE Transactions on Power Delivery, 2008This paper presents a hybrid frequency-time domain methodology for the modeling of grounding systems considering the nonlinear effect of soil ionization. The method is validated by analyzing two typical grounding systems under high soil ionization effects.
J.C. Salari, C. Portela
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Characterization of ionization phenomena in soils under fast impulses
IEEE Transactions on Power Delivery, 2006Protective devices such as spark gaps and surge arresters are used to divert surges to earth. It is, therefore, necessary that earthing systems are designed with a low-magnitude earth impedance value so that the overvoltage protection devices can divert high fault currents effectively to earth for all types of fault. Power frequency characterization of
Abderrahmane Haddad
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Ionization and sorption of fomesafen and atrazine by soils and soil constituents
Pesticide Science, 1993AbstractFomesafen exhibited weakly acidic properties and was titrated spectrophotometrically and determined to have a pKAof 3.0. [14C]fomesafen and [14C]atrazine, as references, were used in slurry‐type sorption studies with H+‐ and Ca2+‐saturated soil organic matter, Ca2+‐saturated montmorillonite clay, Norfolk sandy loan (Typic Paleudult) and Drummer
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