Aerial surveys of Caspian seals on the winter ice field in Kazakhstan territorial waters were carried out in February 2005 and 2006 to assess the annual pup production for the species and natural predation on newborn pups. Estimated pup production was 21063 in 2005 and 16905 in 2006 (including an estimated figure for pups born in Russian territory in each year). The breeding population size of ...

Snake bite was known as one of the most important public health concerns world wild. Respiratory and cardiac problems and destruction of endothelium system occurs as a result of snake bite. Some proteins and peptides in snake venom have potential for drug discovery studies. According to the important role of cell adhesion and angiogenesis in cancer development, identification of new therapeutic...

the caspian basin in its old geopolitical situation under the soviet :union: was located in the buffer zone between two spheres of influence of the two superpowers. after the fall of the soviet :union: followed by the rise of new structures and three new states in the region, new relations, however, prevailed among the areas of geography, power and politics in the region. these new relations in...

after the soviet union fragmentation, the attentions of regional and international countries have turned to this region for oil and gas discovery in the caspian basin. after that, this region enjoys more geopolitical importance increasingly. therefore, the main question is:” what factors can influence the new geopolitics of the caspian basin?” it seems that, some issues such as the lack of a...

The aim of this study was to determine the optimal cutting cycle in an uneven-aged beech forest in the North of Iran. First of all, a logistic growth model was determined for an uneven aged forest. Then, the stumpage price was predicted via an autoregressive model. The average stumpage price of beech was derived from actual timber, round wood, fire and pulpwood prices at road side minus the var...

alburnus chalcoides , caspian shemaya, is found in the river systems of the aral, black and caspian sea basins and is an economically valuable cyprinid from the southern caspian sea. this species has been reported as near threatened species in this basin due to damming, over and illegal fishing, destruction of its spawning grounds and water pollution. the caspian shemaya is an important species...