Abstract: An adhesive protein, present inter alia in the stickleback nest building glue has now been isolated and purified. Its amino acid sequence and corresponding coding polynucleotide sequences are isolated and sequenced. The protein finds both medical and technical uses, whereas both the protein and the polynucleotide sequence can be used in analyses, determining the presence and influence of androgenic substances, for example androgenic pollutants, present in the aquatic environment.

Abstract: Means for joining concrete piles (10) comprising a fixed end shoe (11) on each of the adjacent pile ends, and elements for joining the piles at the end shoes. Said elements include a number of guides (12) opening at the outside of the pile close to the adjacent pile ends, guides in one pile being located opposite to guides in the pile, and locking members (18), spanning the joint between the piles, which are driven from the outside into guides located opposite to each other in the pile ends to press said ends together by wedge action between guides and locking members. The guides (12) are dimensioned in relation to the locking members (18) so as to effect plastic stretching of the locking members after an initial displacement when the locking members are driven into the guides.

Abstract: Method of controlling impact force and shock interval at a drop hammer of the type which has a core (10) and a number of casings (12, 14, 16, 19) arranged concentrically around the core. Between the core and the casings, spacings are arranged, and the core and the casings are interconnected alternatingly at one end and the other beginning at the upper end of the core. Between the lower end of the core and those ends of one or more casings, which are not permanently connected, a shock wave transferring connection is provided to short-circuit the path of the shock wave through the core and the casings.