Abstract: The invention relates to the use of a reactive liquid applied material for producing a roofing membrane, wherein the reactive liquid applied material has a liquid component and a powder component, wherein the powder component comprises a mineral binder system consisting of a plurality of mineral binders capable of forming an ettringite phase when combined, and wherein the liquid component comprises one or more aqueous polymer dispersions. According to the invention, the reactive material contains at least twice, preferably at least 2.5 times, in particular at least three times as much wt. % solids content of polymers as it does wt. % mineral binders, a proportion of a PU polymer is at most 30% of the solids content of polymers, relative to the total mass of the polymers, and at least one of the polymers used in the reactive roof waterproofing product has a Tg determined by DSC of less than ?20° C., preferably less than ?30° C.

Abstract: A method, apparatus and computer program for improving the signal-to-noise ratio of a signal S(t), S(t) containing Signal and noise, are disclosed. A measurement of S(t) at a frequency-of-interest is obtained. Noise measurements of S(t) at a plurality of noise frequencies where the Signal portion of S(t) is expected to be small are obtained. The noise at the frequency-of-interest is estimated using the noise measurements at the plurality of noise frequencies. The estimated noise is subtracted from the measurement of S(t) at the frequency-of-interest.