Abstract: The invention relates to a method and a device for the detection of changes of the geometric arrangement, the nature or the quantity of objects or bodies by means of sensors.

Abstract: Aqueous solutions of aminomethylenephosphonic acid, chiefly diethylenetriaminepenta(methylenephosphonic acid), are disclosed containing a crystallization inhibitor which is an alkali-metal salt of an organic carboxylic acid and residual hydrochloric acid originating from the manufacturing process. The equivalent molar concentration ratio of carboxylic acid salt to hydrochloric acid is greater than 1, preferably from 1.5 to 3.

Abstract: A storm overflow basin for use, e.g. in combined sewage systems has a storage tank leading to a storm overflow unit having a restricted sewage discharge and a storm overflow, the latter being provided with a weir at which there is mounted a flap gate engaging the crest of the weir with its bottom edge and being operable by float controlled means in dependence upon the water level in the storm overflow unit, to move away from the crest of the weir when storm conditions require a controlled overflow discharge. The normal sewage discharge is provided with restriction means that are also float controlled.

Abstract: Shaped bodies are produced from mixed dust containing substantially iron oxide. The dusts are dry or moist or become available in the form of mud and at least one of these has or assumes thixotropic properties. The mixed dusts are treated to form a flowable, particulate mass by subjecting same to an impact- or a beatmilling action with an average moisture content that corresponds to the desired final moisture content. The particulate mass having been subjected to the milling action is then subsequently shaped in the usual fashion.