Abstract: A method for preservation of fish consists in that the original product is salt-cured and held, whereupon the fish is given a protective coating of a polymer composition containing polyvinyl alcohol, a mixture of poly-hydroxyethyleneglycol ethers of monoethanolamides of synthetic fatty acids of the C.sub.10 -C.sub.16 fraction, sorbic acid, glycerol and water, the mass percentage content of the components of said polymer composition being as follows:______________________________________ polyvinyl alcohol 0.1 to 25.0 mixture of polyhydroxyethyleneglycol 0.00024 to 0.06 ethers of monoethanolamides of synthetic fatty acids of the C.sub.10 -C.sub.16 fraction sorbic acid 0.01 to 4.0 glycerol 10 to 15 water to make up 100, ______________________________________whereupon the thus-obtained coated fish is treated with an aqueous modifying solution of the following mass percentage composition: ______________________________________ modifier 1 to 25 water to make up 100.

Abstract: An electromagnetic induction pump comprises an open magnetic circuit with an excitation winding. Installed in the air gap of the magnetic circuit is a duct for the flow of an electrically conductive liquid wherein electric current is induced. The pump further comprises a means for electrical continuity outside the air gap of the magnetic circuit. This means for electrical continuity is in electrical contact with the conductive liquid being pumped and partially embraces the magnetic circuit. At least the magnetic circuit portions adjoining the duct have a length l, in the direction of the liquid flow, which is defined by the expression: ##EQU1## where .sigma.=the specific conductivity of the conductive liquid being pumped;.mu..sub.o =the magnetic permeability of the conductive liquid being pumped; and.omega.

Abstract: This process provides for twisting continuously supplied wires in one of preset directions with an essentially uniform pitch of twist ensuring the maximum number of lays in the zone of preliminary twisting, while simultaneously twisting the wires in the opposite direction in the zone of final twisting of wires to form an article.The machine for accomplishing the process comprises, sequentially mounted on a bed, an unwinding device, a twisting mechanism, a pull-out mechanism and a take-up mechanism. Arranged between the unwinding device and the twisting mechanism are guides accommodating a carriage having a reciprocation drive. According to the invention, the machine is provided with an auxiliary twisting head mounted on the carriage and provided with a drive for rotating the head synchronously with the twisting head of the twisting mechanism.