one of the world's major mineral dust source regions lies along the border between iran and afghanistan. in this studyit is hypothesized that a low-level jet may play in role in generating the intensity of this source region. the presence of alow-level jet east of the seistan mountains is documented here for the first time. the jet exists mainly from may toseptember and has a core at 850 mb. ma...

along with breakdown of soviet :union:, political geographical system as well as meaning construction of central asia and caucasus changed dramatically. thus new structure, necessities, and actors have emerged in relations between iran and countries locating in caucasus. one of these countries is azerbaijan. iran-azerbaijan relationship is of high significance from different aspects. after azer...

islamic republic of iran enjoys close and amicable relations with small and christian republic of armenia. on the contrary, the ties between iran and seemingly significant shia republic of azerbaijan are frayed. while tehran’s close relationship with yerevan is widely attributed to geographical and economic isolation of armenia, iran-azerbaijan unfriendly relations have stemmed from suspicion a...

Iran is known as the most complex and varied country in southwest Asia, in terms of geography, vegetation, climate and consequently biological diversity. The rather high number of recorded endemic species of Fulgoromorpha in Iran indicates a high potential for speciation in some areas. In this study, in order to identify the endemic zones for Fulgoromorpha of Iran, three main biogeographic regi...

with the collapse of the soviet :union:, vacuum of power emerged in the south caucasus. this matter has sparked trans-regional and regional powers competition. the newly established republics create challenges and opportunities for iran and turkey. the result of this situation is the competition between tehran and ankara in the region. this topic is highly important in regional equations becaus...