Problem statement: For a number of geological reasons a proportion of the present coastal plains in the Malay Peninsula were inundated by seawater in the past when pyrite in some of the soils is believed to have been mineralized. Random survey of these sites showed a unique distribution and depth of pyritic layer in the soils along the coastal plains. A study was conducted in order to explain t...

this research that was made on 66 cyclones in wet periods of midwest of iran in a given period (1973-2003) shows that in intense wet periods, cyclogensis centers of mediterranean sea, sudan, red sea and mesopotamia were severely active and have been very effective in rainfall of study area. such systems in general, with respect to dominant synoptic patterns, enters into study area from three ma...

The Late Miocene evolution of the Eastern Paratethys Sea was marked by significant palaeogeographical transformations. knowledge them should be improved with information from peripheral parts this semi-enclosed marine basin. study area corresponds to Rostov Dome where northern shore is widely documented. previously published work, going back beginning 20th century, collected. Its analysis allow...

Under 5 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 5.7 5 to 9 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 5.9 10 to 14 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 7.7 15 to 19 years . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 8.4 20 to 24 years . . . . . . . . . . . . . . . . . . . . . . ....

introduction the dynamic state index (dsi) is being introduced on the basis of a newly developed theory termed the energy-vorticity theory (evt). as a weather index, the dsi can describe the temporal sequence and intensity of areas of high and low pressure; but as a climate index, it can also diagnose climate change based on the variation in solar radiation or the influences of friction. in phy...

The present article is a review of a palaeobiogeographic analysis of Jurassic Ostracods from East Africa, India and Madagascar and includes also some general remarks on palaeobiogeography, biodiversity and Ostracod ecology.The palaeobiogeographic study shows the high significance of this microfossil group for the reconstruction of palaeogeographic processes, particularly plate tectonic developm...

at the boundary between jurassic and cretaceous, because of late kimmerian movements, the sea ragressed from many areas of north and cantral iran, and many continental areas rose, which included a number of differentiated basins. the boundary between jurassic and cretaceous in these parts of iran is usually marked by a big diastem or by red, clastic and evaporitic sediments. the whole or part o...

Caspian Sea is the largest enclosed body of water on the earth. Since the collapse of Soviet Union in 1991 and discovering large oil and gas fields, some issues such as political, economic and environmental events, made the Caspian Sea important. The ecology of the Sea are being endangered due to several issues such as petroleum extraction, river and sea pollutions, water level rise, biological...

genetic diversity is a key component of ecosystems. the aim of the present study was to evaluate the genetic diversity of iranian native honeybee colonies (apis mellifera meda l.) located in the northern region. colonies from 24 locations have been analyzed using microsatellite markers. samples were collected from caspian sea southern area (north of iran). six microsatellite markers (a28, a29, ...