Abstract: The present relates to a material inlet portion (1) of a spraying nozzle (100) for bringing materials in said spraying nozzle comprising a first inlet (11) adapted to bring a first material in the spraying nozzle and defining a first portion (31) of a main channel (3) in a flow direction, and at least one second inlet (12) adapted to bring a gas/air material in the spraying nozzle and defining a secondary channel (4) branching into said main channel (3) and presenting an outlet (13) for outputting the air/gas material centrally with respect to the main channel (3) such that the air/gas material is to be surrounded by the first material upon exiting the outlet (13).

Abstract: The present relates to an apparatus for manufacturing 3-dimensional concrete structures comprising a projection head (1) for spraying concrete material, wherein the projection head (1) comprises a projection nozzle (11) for spraying the concrete material and at least two guiding surfaces (12) provided on both sides of the projection nozzle (11) and defining a volume in between, such that the projection nozzle (11) is adapted to spray the concrete material into said volume, and wherein the projection head (1) is repeatedly moved along a predefined path by a control means and is configured to adjust the position of the two guiding surfaces (12) during the movement of the projection nozzle (11) so as to create a 3-dimensional concrete structure made of a plurality of projected concrete layers.

Abstract: In vivo methods for generating and detecting recombinant DNA sequences in bacteriophages or plasmids containing bacteriophage sequences, methods for generating hybrid genes and hybrid proteins encoded by these hybrid genes by the use of bacteriophages and plasmids containing bacteriophage sequences, bacteriophages and plasmids that can be used in these methods, and kits comprising appropriate bacterial host cells and bacteriophages or plasmids are described.

Abstract: The products of the invention are obtained by a method which consists of: oxidizing cytidine-diphosphocholine, fixing the dialdehyde obtained by the preceding oxidation of the ribose of the cytidine on NH.sub.2 groups of the amino compound in alkaline aqueous solution, stabilizing the coupling thus formed by reduction and recovering the macromolecular product thus obtained in the form of an aqueous solution. The latter can be freeze-dried to provide a powder suitable for preservation. The coupling occurs between the oxidized ribose groups of the cytidine-diphosphocholine and the lysine residues of the amino compounds. The products of the invention are suitable as vaccines against parasites belonging to the class of those including molecules bound to a phosphorylcholine residue, such as intestinal or respiratory parasites.