1. introduction dust phenomenon which occurs in arid and semiarid lands of the world is closely related to climatic characteristics of the region. according to the world meteorological organization (wmo), whenever wind speed exceeds 15 meter per second and horizontal visibility reduces to less than 1 km in a station, dust storm is reported (goudie & mideleton, 2006). great storms are created wh...

through this article, the distribution of air pollutants in tehran have been simulated based on wind patterns with and without the presence of synoptic by tapm (a meso-scale model). the simulation covers three horizontal resolution domains 30, 15 and 5 kilometers. the pollutants chosen for this are co and pm10 and wind data is 10 meter height level. the result has shown that the model simulated...

Center for Forested Wetlands Research, Southern Research Station, USDA Forest Service, Cordesville, SC, USA b Forest Inventory and Analysis, Southern Research Station, USDA Forest Service, Clemson, SC, USA Department of Geography and Earth Sciences, University of North Carolina at Charlotte, Charlotte, NC, USA Center for Applied Geographic Information Science, University of North Carolina at Ch...

Background: The consumption of low quality foods is common in low socioeconomic areas; and according to epidemiological studies, the density of nutrients often proves the quality of diet. This study aimed to compare the density of macronutrients and micronutrients in various parts of Tehran.   Methods: This was a cross-sectional study performed from September to December 2007 in all the...

The dysderid spider genus Dysderella Dunin, 1992 is surveyed. currently comprises two species: D. caspica (Dunin, 1990) from Azerbaijan and North Caucasus transcaspica (Dunin & Fet, 1985) Turkmenistan north-eastern Iran. Herein, elburzica sp. nov. described based on male specimens collected in Tehran Province, northern All three species are illustrated their distributions mapped.

AIM To study the trend of hepatocellular carcinoma incidence after correcting the misclassification in registering cancer incidence across Iranian provinces in cancer registry data. METHODS Incidence data of hepatocellular carcinoma were extracted from Iranian annual of national cancer registration reports 2004 to 2008. A Bayesian method was implemented to estimate the rate of misclassificati...