Abstract: A method has been developed of the production of D-arabinose as a base material in the production of vitamin B2. the substance of the method rests in that the solution of a salt of D-gluconic acid is subject to direct electrochemical degradation oxidation by the action of direct current and with the aid of the fluidized bed anode with a layer of electrically conductive particles kept in suspension by the flow of the reaction mixture. Graphite or coke is used as electrically conductive particles.

Abstract: The invention pertains to the absorbing dressing for wounds, which consists of spherical particles of regenerated cellulose of the size 0.05-0.5 mm (preferably 0.05-0.3 mm) and a macroporous structure characterized by the cyclohexane regain of the dry material at least 0.2 ml/g. The dressing is prepared from the regenerated cellulose swollen with water by replacement with organic solvents and the subsequent drying of the product swollen with the said solvent. The porous structure of the dressing warrants that it can absorb excretions of the wound in the amount 1.5 to 5 g water per g of solids; the grainy macrostructure remains preserved during the absorption so that the material applied on the wound in the form of a powder in the layer 2-5 mm thick, in particular 2-3 mm thick, can be without difficulties and almost without pain rinsed away with water.