the igneous dykes are a small mafic rock unit exposed in the south gorgan of eastern alborz, north iran. these mafic dykes are intruded in the middle–upper paleozoic sedimentary and metamorphic rocks units representing a part of the north gondwana province. the studied samples were collected from various locations along the exposed bodies. thin sections of these rocks show medium to coarse grai...

typology solution in architecture science seeks classifying constructions and spaces in terms of join features. typology studies can be infrastructure of design in micro and minor levels. therefore being oblivious of it in architecture and city planning can lead to state of chaos in urban aspect and makes heterogeneous urban textures. current paper seeks to find factors influencing on formation...

logistic regression (lr) was used to model urban growth between the years 1987 and 2001 in gorgan city, north east of iran. three groups of variables including economic-social, land use and biophysical variables were used in the modeling practice. using covariance of the independent variables, distance to administrative and sporting centers plus distance to cities were removed. roc (relative op...

urban settlements and their connectivity will be the dominant driver of global change during the twenty-first century. in an attempt to assess the effects of urban growth on available land for other uses and its associated impacts on environmental parameters, we modeled the change in the extent of gorgan city, the capital of the golestan province of iran. we used landsat tm and etm+ imagery of ...

background: toxoplasma gondii is one of the most prevalent parasites of human and warm- blooded animals. toxoplasmosis is important especially in two groups: pregnant women and immunocompromised patients. if women acquire the primary infection during the pregnancy, it would be life threatening or re-mains severe disorders for the fetus. this study was performed to evaluate the seroprevalence of...

Abstract The entry of heavy metals due to industrial activities into the environment is one major problems in this century. Nickel and chromium(VI) are toxin elements that used various industries. In study, lignocellulose nanofiber was purchased from Nano-Novin Polymer Company (Gorgan, Iran) as an adsorbent for removal nickel ions aqueous solutions a batch system. effects pH, initial concentrat...