Results 211 to 220 of about 4,106 (254)

Soil Properties and Soil Resistivity Measurement

CORROSION 1981, 1981
Abstract An outline of general soil characteristics as related to soil resistivity. A discussion of the problems of applying the Wenner Method of resistivity measurement with close pin spacing and the advantages of using rod electrode equations for measuring the resistivity of the top layer of the earth.
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Determination of soil parameters to calculate soil resistivity

Russian Electrical Engineering, 2015
This paper is dedicated to the development of techniques allowing for design solutions to be refined on grounding devices. The resistivity is used in the design of grounders in dependence on the soil humidity, temperature, and density. To determine soil humidity at the depth of soil occurrence, two models are used: depending on the season at a depth of
N. M. Zaitseva, B. B. Isabekova, M. Ya. Kletsel’   +2 more
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Metagenomic exploration of antibiotic resistance in soil

Current Opinion in Microbiology, 2011
The ongoing development of metagenomic approaches is providing the means to explore antibiotic resistance in nature and address questions that could not be answered previously with conventional culture-based strategies. The number of available environmental metagenomic sequence datasets is rapidly expanding and henceforth offer the ability to gain a ...
Monier, Jean-Michel, Demanèche, Sandrine, Delmont, Tom, Mathieu, Alban, Vogel, Timothy M, Simonet, Pascal   +5 more
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Heat resistance of fungi from soil

International Journal of Food Microbiology, 1993
The survival of fungi from soil samples has been investigated after exposure to temperatures of 60, 70, 80 and 90 degrees C in Sabouraud agar. The least resistant fungi surviving 60 degrees C for 60 min were the Aspergillus (A.) niger group, Chaetomium spp, Penicillium spp, and Scytalidium lignicola. None of these survived 70 degrees C for 10 min.
Z, Jesenská, E, Piecková, D, Bernát
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Uplift resistance of soils

Géotechnique, 1988
The uplift resistance of soils is normally associated with the design of foundations for structures such as transmission line towers where an adequate margin of safety is required against failure. This represents the design for safety case. The Author describes a scheme for the water coolant system at Sizewell A nuclear power station, where eight ...
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Measurement of soil suction using soil's resistivity

2009
During several years, the analyses of geotechnical problems have been dominated by solutions developed in the classical soil mechanics where the soil is considered completely saturated or dry, conditions that make the analyses less complicated. However, in many geotechnical problems, the engineer has to deal with unsaturated soils which properties are ...
Perez N., Garnica P., Landaverde N.
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Antibiotic resistance in soil and water environments

International Journal of Environmental Health Research, 2002
Seven locations were screened for antibiotic-resistant bacteria using a modified agar dilution technique. Isolates resistant to high levels of antibiotics were screened for r plasmids. Low-level resistance (25 micro g x ml(-1)) was widespread for ampicillin, penicillin, tetracycline, vancomycin and streptomycin but not for kanamycin.
Nwadiuto, Esiobu, Lisa, Armenta, Joseph, Ike   +2 more
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Electrical Resistivity to Assess Soil Properties

2011
International ...
Richard, Guy, Seger, Maud, Besson, Arlène, Cousin, Isabelle   +3 more
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Mechanisms for Resistance in Soil

Science, 2006
Pickup, Roger W., Rhodes, Glenn
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Measurement of Earth conductor resistance and soil resistivity

Summer Event on History of Electrical Engineering, 2003
Earth resistance measurement relates in part to the oldest electrical technology namely lightning protection. In this paper, both the definition of earth resistance and the theoretical calculation of the resistance of a hemispherical conductor are shown. A practical demonstration of a test set is given. The limitation and assumptions of the methods are:
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