The cryogenic rotary coupling comprises segments of a cryogenic line that are capable of turning relative to each other about a pivot axis of the rotary coupling. 01 to 10 parts by weight of a specific radiation-curable acrylic compound, 1 to 30 parts by weight of a specific radiation-curable acrylic compound, 0. The method includes registering the first and second images so that they are mapped into the same physical space, and comparing the first and second images to determine any differences between the two images and hence any differences between the uninterrupted and the interrupted radiation treatments. The hydrocarbon includes olefin having a hydrocarbon chain length suitable for detergent manufacture, e. In one embodiment, if the program logic is changed, a new user interface may be generated that works with the changed program logic. The first transparent resin layer in cross section has an arch-like outer profile.