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By changing the air and water flow relative rates in the two-phase (air-water) flow through a minichannel, we observe aggregation and partitioning of air bubbles and slugs of different sizes. An air bubble arrangement, which show non-periodic and periodic patterns. The spatiotemporal behaviour was recorded by a digital camera. Multiscale entropy analysis is a method of measuring the time series complexity...
The paper presents problems related to data availability for the ground water flow modeling in the region of the Bełchatów lignite mine. The U.S. Geological Survey’s program MODFLOW was used to reconstruct past and to present the existing conditions in the aquifers within the Bełchatów lignite mine influence. Ground water and surface water monitoring system which enables to assess changes of hydrodynamical...
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