Marinus Quaak

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A new, flexible, fast, robust and economic technique was developed to treat sediment in shallow lakes with phosphate binding chemicals. The upper 0.15 m of the sediment is thoroughly mixed with ferric chloride using a water-jet manifold coupled to a dosing pump and a navigation control system. Its logistics were tried out in a small, shallow and(More)
After a reduction of the external phosphorus loading to a lake, an internal loading from the sediments may delay the improvement of the water quality. The accepted method to combat internal loading is careful dredging of the upper sediment layers (Cooke et al., 1986), but this method is costly and time consuming. Addition of phosphorus binding agents to the(More)
BACKGROUND Neurobrucellosis is a rare complication of brucellosis, a bacterial zoonotic disease endemic in regions such as the Middle East. It is important to be alert for this imported disease in the Netherlands as well, especially among migrants. CASE DESCRIPTION A 14-year-old boy from Syria presented with headache, vomiting and weight loss. Brucella(More)
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