نتایج جستجو برای: zand rud

تعداد نتایج: 415  

Journal: :journal of agricultural science and technology 2010
s. m. hosseini b. zahraie

this study is focused on developing an integrated optimization-simulation based genetic algorithm model (iosga) to develop the operational policies for a multi-purpose reservoir system. the objective function of the optimization model is considered to be a linear function of reliability (rel), resiliency (res), and vulnerability (vul) of the river-reservoir system. genetic algorithm (ga) is emp...

The study subvolcanic intrusion, comprising syenodiorite, monzonite and quartz-monzonite, is cropped out in Talkh-rud valley located in the northeast of Damavand volcano flank. This sub-volcanic intrusion possesses porphyritic texture and consists of plagioclase, alkali feldspars, phelogopite, amphibole, clinopyroxene, apatite and titanomagnetite. Evidences of disequilibrium such as zoning and ...

Journal: : 2023

Artykuł poświęcony jest zagadnieniu efektywnego wykorzystania minerałów towarzyszących przy zagospodarowaniu złóż rud tytanowo-cyrkonowych. Ponieważ złoża osadowych tytanowo-cyrkonowych mają duże powierzchnie, setki milionów ton masy wydobywczej podczas ich eksploatacji przekształcane są w formacje antropogeniczne. Z całej zaledwie 1% po wzbogacaniu wykorzystywane do produkcji tytanu metaliczne...

Journal: :Journal of Water and Climate Change 2022

Abstract In a human-dominated world, access to sustainable water resources has led complex management policies that affect hydrological droughts. Applying the best approach assess contribution of these human-made changes droughts is still underexplored. this study, individual and joint impacts dam inter-basin transfer projects are quantified for characteristic drought using developed data-based...

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