Results 261 to 270 of about 39,802 (304)

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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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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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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Electrical Resistivity to Assess Soil Properties

2011
International ...
Richard, Guy, Seger, Maud, Besson, Arlène, Cousin, Isabelle   +3 more
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Erosion Resistance of Cohesive Soils

Journal of the Hydraulics Division, 1981
An experimental study is described that concerned the surface erosion of an illitic silty clay (Grundite) at selected salinities and water contents; the study was designed to test the applicability of rate process and double layer theories. Both velocity increment and temperature increment tests were run in a refrigerated water tunnel.
William E. Kelly, Ronald C. Gularte
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Resistance of soil microorganisms to starvation

Soil Biology and Biochemistry, 1972
Most groups of soil microorganisms died when exposed to prolonged starvation in a carbon-free solution, but the relative abundance of Bacillus and actinomycetes increased with time. Certain nonspore-forming bacteria also persisted. The ability of individual soil isolates to endure starvation in solution was not correlated with their glycogen content ...
M. Chen, M. Alexander
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Mechanisms for Resistance in Soil

Science, 2006
Pickup, Roger W., Rhodes, Glenn
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Electrical resistivity of sandy soil

Géotechnique Letters, 2015
This paper presents the results of an investigation into the interaction between the various electrical factors pertaining to resistivity tests in Perth sandy soil (specifically AC input voltage and frequency) and those controlling the soil characteristics, specifically water content and relative density of the soil, and the type of water employed in ...
L. M. S. Pandey, S. K. Shukla, D. Habibi
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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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Soil Resistivity Evaluation and Grounding System Resistance

2018
This chapter contains the factors affecting the soil resistivity and grounding resistance such as the soil moisture content, soil mineral content and soil temperature. It discusses the methods of measuring of soil resistivity and grounding resistance using Wenner method.
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