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Biguanide and its N-substitutes derivatives represent a difunctional compounds group known for their diversity therapeutical activities, such as antimalarial, antibacterial, disinfectant, antiviral, antihyperglycaemic agents and recently literature reports as analgesic and antidepressant drugs, selective agonistsпїЅ serotoninergics for the serotonin 5-HT3 receptors. In the last years the literature points out a large practical applications spectrum of the 4f metal complexes for their remarcable spectroscopy, optic...

The literature mentions that marine algae biomass is an important resource of mineral elements, polysaccharides (agar-agar, alginats), proteins and vitamins. The superior valorification of this biomass represents a highly important resource for the pharmaceutical industry, textile and dyes industry, nutrition industry and for soil fertilization. At the Romanian Black Sea Coast the macro-algae biomass envelopment is reported mainly in summer and is registered especially by the green macro-algae group; thus the larg...