God created the world and the Dutch created the Netherlands. This old and popular expression among Dutch people could get a completely new meaning. After the polders, dikes, and Delta works, the Dutch may have a new flagship: the Dutch mountain. The idea started as a column by journalist and former professional cyclist Thijs Zonneveld.
Traditionally, the study of the hydromechanical behaviour of ships (and floating bodies in general) is divided into ship hydrostatics (without motions in calm water) and ship hydrodynamics (with motions in either calm water or in waves and/or current). The area of ship hydrodynamics can be roughly divided into powering/propulsion and calm water resistance, seakeeping (motions
Problem description The runoff water from greenhouses contains fertilizers and must be cleaned before it can be returned to the groundwater system. A means of doing this is to introduce algae into the water. The algae eat up the fertilizer and clean the water. Subsequently, the algae may be removed and sold as feed, for