this study was conducted to investigate the type and origin of clay minerals via several profiles in lordegan hilly lands. the profiles were located in two kinds of land uses including forest and dry farm at different slope positions as sampling sites. the soil saples were collected from two depths of soil horizons to indicate cec, soil texture, oc%, calcium carbonate equivalent, x-ray diffract...

Background and aim: Cancer is the third leading cause of mortality in Iran. By use of Geographic Information System, location-based and accurate analytical and descriptive date can be given to health policy makers. The aim of this study is to identify the incidental patterns of cancers (random, scattered, cluster) and analyze them spatially. Method(s): This is a periodical descriptive and analy...

Development of cities and villages, agricultural farms and industrial regions in abutment and/or in the course of streams and rivers or in prone flood lands has been caused more notations in hydrology problems and city planning topics. In order to protection of cities against of flood damages, embankment construction is a desired and scientific method. The cities that located in arid zones may ...

â â â  each of planning must be accomplish according to the principles of sustainable development to success urban planning. this article evaluates sustainable index in social, physical, economical and environmental biological dimensions of mashhad metropolis which is the second biggest city in iran using descriptive –analysis method and quantitative models and statistical software. in the fi...

This paper uses data on individual earnings in manufacturing industry for five African countries in the early 1990s to test whether firms located in the capital city pay higher earnings than do firms located elsewhere, and whether such benefits accrue to all or only certain types of workers. Earnings equations are estimated that take into account worker characteristics (education and tenure) an...