Abstract: A method of retrofitting flow-altering devices to an outer surface of a wind turbine blade is disclosed. The flow-guiding devices are of the type having a base comprising an inner side for attaching onto the surface of the wind turbine blade, and an outer side with protruding flow-altering device parts. The method comprises the steps of: a) inserting the protruding flow-altering device parts into a mounting plate so that the inner side of the flow-guiding devices are exposed from a first side of the mounting plate, b) adhering the inner side of the flow-altering devices to the surface of the wind turbine blade by applying the first side of the mounting plate onto an area of application on the surface of the wind turbine blade, and c) removing the mounting plate from area of application on the surface of the wind turbine blade.

Abstract: A vortex generator device (70) for mounting on a wind turbine blade (10) is disclosed. The device comprises: a base (71) having an inner side (72) for attaching on an exterior surface and an outer side facing away from the exterior surface. The vortex generator device is provided with at least a first vane (79, 80) protruding substantially perpendicular to the base (71) from the outer side (73), wherein the vane (79, 80) comprises a leading edge side (78) and a trailing edge side (77). The vane (79, 80) is tapered towards the leading edge side (78) of the vane (79, 80). The vane (79, 80) is additionally tapered towards the trailing edge side (77) of the vane (79, 80). Further the vane (79, 80) is tapered towards a top part of the vane (79, 80).

Abstract: A vortex generator device (70) for mounting on a wind turbine blade (10) is disclosed. The device comprises: a base (71) having, when mounted on an exterior of the wind turbine blade (10), an inner side (72) for attaching on a surface, such as the exterior of the wind turbine blade (10), and an outer side (73) facing away from the exterior of the wind turbine blade (10). The device is provided with a vane vortex generator pair comprising a first vane (79) and a second vane (80) protruding from the outer side (73) of the base (71). The inner side (72) of the base (71) is provided with a recess (74) or undercut for obtaining an adhesive (81).

Abstract: In a method of producing cocoa mass from nibs from cracked, fermented cocoa beans, nibs are used from which nibs parts of an undesired degree of fermentation have been sorted out, for example by analysis of the individual nibs pieces for fluorescence, preferably by irradiation with UV light at two different wavelengths, preferably of about 254 nm and about 366 nm with a cut-off filter at about 390 nm, the analytical results being the basis of any sorting out of separate nibs pieces, or by sorting of the cocoa beans before cracking by thickness, by density or by hardness. In this respect, the fluorescence detection method can be used for monitoring the separation.