A biological assessment of the Tang Sorkh River (Iran) was studied from July 2013 to August 2014 using benthic macroinvertebrate communities. Samples were gathered every two months, from five stations using a Surber sampler( 30×30cm), fixed in formalin (4%) and then separated and identified in the laboratory. Environmental conditions (current velocity, temperature, depth, width, dissolve oxygen...

abstract this research was conducted in the pegah - sorkh sub-catchments area, a semi-arid region in sw iran, using geographic information systems (gis) and remote sensing (rs) to compare the erosion potential method (epm) and modified pacific southwest interagency committee (mpsiac) models in erosion-potential mapping and sediment yield assessment. the study area with approximately 4600 ha sho...

modernity and its impacts on urbanism and the change of the concept and the nature of the city which began in qajar era, stands in a sensitive level in pahlavi’s government (1920-1940). in this stage the concept of modernism can be seen as a pattern in cities (tehran in particular) which affects all economic, social, cultural, physical, management and urban planning aspects s. the main question...

The present study investigates the accumulation of vanadium, iron, and nickel in different depths of soil in collection sites of oil sludge, in Masjed Soleyman Oil and Gas Exploitation Company, located in Choob Sorkh Region. To conduct the research, four sampling points have been selected at the mentioned site, with one sampling point chosen outside the site, as the clean area. Soil sampling ha...

the present study investigates the accumulation of vanadium, iron, and nickel in different depths of soil in collection sites of oil sludge, in masjed soleyman oil and gas exploitation company, located in choob sorkh region. to conduct the research, four sampling points have been selected at the mentioned site, with one sampling point chosen outside the site, as the clean area. soil sampling ha...