17-05-2016 - For 30 years WLN safeguards the quality of drinking water in Groningen and Drenthe. By using chemical, biological and technological research protects the quality of the drinking water that water company Groningen and water transportation company Drente provide. Quality control is essential for WLN. Background Measuring the quality of drinking water is WLN’s core business.
18-05-2016 - Background As a material (typically, a metal) is stretched, it can reach a point where all of the strain (deformation) is concentrated in just one area. For example, notice in the figure below how the material has become very narrow across a short length in the specimen which was initially cylindrical. This condition is called