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Now showing items 1774-1793 of 8144
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(18th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), 2007-11)An Artificial Neural Network (ANN) is proposed to detect human-induced land cover change using a sliding window through a time-series of Moderate Resolution Imaging Spectroradiometer (MODIS) satellite surface reflectance ...
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(The Japanese Society for NDI, 2012-11)The ability to predict rock failure is desirable for the prevention of disasters in mines. The acoustic emission (AE) method is a well-known tool for monitoring fracture growth in rock masses that is used to help ensure ...
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(2012-10)Object detection is an essential first stage in a surveillance system, primarily because it focuses all the subsequent processes. The standard approach to object detection is background subtraction. At the core of ...
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(Pergamon-Elsevier Science Ltd, 1993)Three bays along the South African coast were studied for the presence of Salmonella spp in seawater, effluent and storm water discharges into the bays and in shellfish harvested at the same sites. The microbial quality ...
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(Elsevier Science BV, 2002-07)Sinkholes in dolomitic areas are notoriously difficult geophysical targets, and selecting an appropriate geophysical solution is not straightforward. Electrical resistivity imaging or tomography (RESTOM) is well suited to ...
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(Butterworth-Heinemann Ltd., 1996-05)Two petrographic methods, namely long-wave fluorescence intensity measurements and a vitrinite elasticity index were developed and used to detect incipient oxidation in coals subjected to simulated weathering conditions. ...
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(Blackwell Science Ltd, 2000-09)A pit-stop semi-nested PCR assay for the detection of toxigenic Vibrio cholerae in environmental water samples was developed and its performance evaluated. The PCR technique amplifies sequences within the cholera toxin ...
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(American Institute of Physics, 1998-11)The recognition of small features of low contrast in the image recorded by an x-ray image intensifier is usually limited by photon noise. This detail-contrast perceptibility is dependent on the detective quantum efficiency ...
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(1997-09)The introduction of new factors of safety for winding ropes is accompanied with codes of practice for the design, operation and maintenance of winders and for the condition assessment of winder ropes. The studies undertaken ...
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(1997-11)This volume 2 of the GAP 324 report discusses the parts of the project that dealt with the sinking of very deep shafts, and an initial study into the behaviour of triangular strand ropes for deep shafts.
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(2000-12)Deep shaft drum winder operations will be allowed if such winder installations comply with the requirements of a code of practice (SABS0294). The specifications of the winder code of practice were largely based on experience, ...
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(1998-07)The objective of this research project was to determine how winder design parameters affect the safe working life of rope operating of drum winders with the view to refine requirements in the code of practice for the ...
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(Cambridge University Press, 2006-09)The distribution and abundance of free-living arthropods from soil and under stones were surveyed at the Cape Hallett ice-free area (ASPA No. 106), North Victoria Land, Antarctica. A total of 327 samples from 67 plots ...
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(Nature Publishing Group, 2005-12-08)Savannas are globally important ecosystems of great significance to human economies. In these biomes, which are characterized by the co-dominance of trees and grasses, woody cover is a chief determinant of ecosystem ...
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(The International Road Federation (IRF) 2013 conferences, 2013-11)A new and innovative three-dimensional (3-D) laser based technique was employed to accurately determine the morphological (shape) properties of aggregates used in asphalt mixes. The objective of this paper is to investigate ...
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(Science & Technology Letters, 1998)The acid-base properties of hydrous ferric oxide were studied by glass electrode potentiometry. From the potentiometric data, surface protonation constants were derived according to the Diffuse Double Layer convention. ...
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(2010-09)The work that is presented here is focused on the results that were obtained during studies of the performance of the DSC under certain reverse bias conditions. When one cell in the series connection in a module is shaded, ...
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(Academic Press Ltd, 1997-07)The effect of various steeping conditions (time, temperature and aeration) on the quality of sorghum malt for brewing (in terms of diastatic power, free amino nitrogen and hot water extract) was examined. Steeping time and ...
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(Springer-Verlag, 2010-02)Nozzle blocking was eliminated by calcium-treated liquid steel through changing the chemical and phase composition of alumina inclusions in aluminium-killed steel. Three different methods were applied to determine the ...
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(1994-11)This report discusses the important aspects of the analysis of most rock engineering problems caused by the joint behaviour
Now showing items 1774-1793 of 8144
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