The separation of unobserved sources from mixed observed data is a fundamental signal processing problem. Most of the proposed techniques for solving this problem rely on independence or at least uncorrelation assumption for source signals. This paper introduces a technique for cases that source signals are correlated with each other. The method uses Wold decomposition principle for extracting ...

in this study 152 bacterial strains were isolated from the contaminated oils in the southwest of iran. hemolysis was used as a criterion for the primary  isolation of biosurfactant producing-bacteria. fifty five strains had haemolytic activity , among them tweleve strains were good biosurfactant producers by measuring surface tension and emulsification activity.two microorganism showed the high...

Abstract. The eastern part of China as a whole is practically gigacity; it conglomeration megacities with circa 650 million inhabitants. gigacity, its emissions, processes in pollution cocktail, numerous feedbacks and interactions, has crucial big impact on regional air quality within itself global climate. A large-scale research innovation program needed to meet the interlinked grand challenge...