introduction khoy ophiolite at the global scale is in the middle part of the alp-himalaya orogenic belt and it is extended over 3900 km2 which indicates remnant neotethys oceanic lithosphere in the mesozoic era (kananian et al., 2010). in this paper, in addition to a review of previous investigations about khoy ophiolite, we will try to determine the nature and kind of minerals, origin and part...

investigation of drought event has a great importance in the natural resources management and planning water resources management. in this research, the effect of the climate change on drought characteristics in northwest of iran was investigated using the hadcm3 model under a2 scenario. the statistical downscaling was executed using sdsm 4.2.9 and observed daily precipitation, observed predict...

accurate analysis and interpolation of heavy metals, especially arsenic concentrationin ground watercan play a significant role in planning and continuous monitoring of water resources. the analysis may also prevent human health issues.the purpose of this paper was to evaluate newly published sugeno type fuzzy inference system as an interpolation method for estimating the amount of arsenic in k...

stability analysis and g*e interaction of eight commercial monogerm cultivars of sugar beet were evaluated in three years at 11 major sugar beet producing locations karaj, mashhad, miandoab, esfahan, shiraz, kermanshah, kerman, moghan, hamedan, khoy, and brojerd. a randomized complete block design with four replications was used.in each location cultivars  rasoul, shirin, univers, orbis, 7112hy...

mercury mineralization has occurred in relation with a listwaenitic type hydrothermal alteration system in tavreh area located northwest of khoy. mercury-bearing alteration zone which has an area about 0.4 km2 is situated in one of aland river upstreams. the only mercury compound found in this district is mercury sulfide (cinnabar) deposited as vein and veinlet forms. geochemical investigations...

in order to reduce consumption of chemical fertilizers and in order to evaluate the effect of biofertilizers on yield and yield components of sunflower nuts (helianthus annuus l.), the research was carried out with using factorial based randomized complete block design with three replications at agriculture and natural resources researches station of khoy in 2011. the first factor was  three su...