Nowadays, the negative impact of traction load on power system operation poses a serious problem that may lead to false tripping or even failures relay protection devices and reduce quality electrical energy. This situation is typical for Zabaikal system, in which some areas share electricity consumption by railway reaches 70% total consumption. A computing tool, would allow simultaneous analys...

BACKGROUND AND AIMS Plants of Ephedra normally have vessels, but are known to become nearly vessel-less in some alpine localities. Previous studies implied that wood formation in Ephedra differs fundamentally from that in dicotyledons in which vessel-bearing and vessel-less taxa are systematically distinct. Using E. pachyclada in the Mustang district of Nepal, growing in an altitudinal range of...