970 resultados para Koninklijk Paleis (Amsterdam, Netherlands)
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Part 13: Virtual Reality and Simulation
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Part 13: Virtual Reality and Simulation
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Part 12: Collaboration Platforms
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Part 12: Collaboration Platforms
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Part 12: Collaboration Platforms
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Part 12: Collaboration Platforms
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Part 11: Reference and Conceptual Models
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Part 11: Reference and Conceptual Models
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Part 11: Reference and Conceptual Models
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Part 11: Reference and Conceptual Models
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Part 10: Sustainability and Trust
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Part 10: Sustainability and Trust
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Part 10: Sustainability and Trust
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Digital rock physics combines modern imaging with advanced numerical simulations to analyze the physical properties of rocks -- In this paper we suggest a special segmentation procedure which is applied to a carbonate rock from Switzerland -- Starting point is a CTscan of a specimen of Hauptmuschelkalk -- The first step applied to the raw image data is a nonlocal mean filter -- We then apply different thresholds to identify pores and solid phases -- Because we are aware of a nonneglectable amount of unresolved microporosity we also define intermediate phases -- Based on this segmentation determine porositydependent values for the pwave velocity and for the permeability -- The porosity measured in the laboratory is then used to compare our numerical data with experimental data -- We observe a good agreement -- Future work includes an analytic validation to the numerical results of the pwave velocity upper bound, employing different filters for the image segmentation and using data with higher resolution