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The work presents information about the range, occurrence conditions, geographical and historical status and dynamic tendencies of Melilotus wolgica in Eurasia and Poland. In Poland, the species was noted for the first time in Szczecin at the end of 19th century. Later, it was observed in the anthropogenic localities in the Opole Province, Kraków and Warszawa. In Wielkopolska, M. wolgica was observed...
Vortex valves belong to the category of hydrodynamic flow controls. They are important and theoretically interesting devices, so complex from hydraulic point of view, that probably for this reason none rational concept of their operation has been proposed so far. In consequence, functioning of vortex valves is described by CFD-methods (computer-aided simulation of technical objects) or by means of...
Właściwe przyjmowanie natężeń deszczów miarodajnych ma kluczowe znaczenie dla bezpiecznego projektowania systemów odprowadzania i retencjonowania wód opadowych. Natężenie deszczu właściwe dla czasu koncentracji i przyjętego okresu powtarzalności musi zostać zidentyfikowane w celu stosowania najbardziej popularnego modelu spływu powierzchniowego, tzn. modelu racjonalnego. Od ponad 120 lat natężenia...
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