A long-standing argument in the political sciences holds that high levels of inequality are incompatible with democracy.Although a number of studies have by now investigated whether income inequality endangers democratic consolidation and stability through corroding popular support, the findings remain inconclusive.This study provides new evidence

Because of their trace existence, exquisite structure and unique role, highly toxic marine biotoxins have always led to the development of natural product identification, structure and function research, chemistry and biosynthesis, and there are still many deficiencies in the injury and protection of highly toxic organisms, toxin biosynthesis, rapi

Ardabil, now known as one of the provinces of the country, has been one of the Stoppers oldest and ancient cities in various historical periods, including Islam.This province comes to the end of the majesty and power during the reign of Safavid.Tombstone is among the heritage of the past that reflects culture and civilization.The existence of a tom

Network reconfiguration is of theoretical and practical significance to guarantee safe and economical operation of distribution system.In this paper, based on all spanning trees of undirected graph, a novel genetic algorithm for electric distribution network reconfiguration is proposed.Above all, all spanning trees of simplified graph of distributi