Introduction: Colloidal materials and suspended solids cause turbidity in water. To remove turbidity, clarification method is used that includes processes of coagulation, flocculation, and sedimentation. Due to the long duration of coagulation process, coagulant aids are applied. Despite the favorable efficiency of synthetic polyelectrolytes as a coagulant aid, due to their harmful effects on h...

Understanding the processes involved in evolution of organisms is a principal topic that has received much attention from the research community. A common way to achieve this is to study the ecological conditions and morphological relationships of taxa. Fish are widely regarded as notable animal models in studies of environmental influence on morphological features given their high environmenta...

brown trout, salmo trutta fario, has a wide range of distribution in the north of iran and in karaj, lighvanchai and karun rivers, but there is no report about its feeding behavior in some water resources including the lar natural park. in order to study feeding behavior of this fish during spawning season, a survey was carried out in the rivers of elarm, aab-sefid, kamardasht and delichayi in ...

background: ethical leadership represents the leader's proactive efforts to influence followers' ethical and unethical behavior and follower work attitudes such as perceived organizational support, affective commitment and normal behaviors. the purpose of this research was to test the relationship of ethical leadership and ethical context with affective commitment that mediating the r...

during late qajar era, khorramshahr has gradually turned to an important center in iran’s economic and political sector. situated close to basra and on the other hand at the confluence of the karun river and arvand rud, near the persian gulf, navigability on this waterway that the city is situated on its banks and its easy accessibility to persian gulf, the increasing importance of oil issues, ...

Abstract. Seasonal forecasts have the potential to substantially improve water management particularly in water-scarce regions. However, global seasonal are usually not directly applicable as they provided at coarse spatial resolutions of best 36 km and suffer from model biases drifts. In this study, we therefore apply a bias-correction spatial-disaggregation (BCSD) approach precipitation, temp...

In this research, the relationship between P-wave velocity (Vp) and Electrical Resistivity (ER) parameters with rock mass quality indices is investigated; parameters such as rock mass quality classification (Q) and modified system for sedimentary rocks, known as Qsrm. For making predictive models, about 1200 data-sets extracted from sections drilled in Seymareh and Karun 2 Dam Sites (SDS and KD...

Sasanian’s imperial policy aimed to construct new towns, massive irrigation infrastructures, and land modification bydepopulating rural areas in order to carry out massive agriculture projects particularly in Khuzestan. Shushtar with itsancient relics presents a unique chance to investigate some of these development activities, mainly in terms of irrigation.Several chief irrigation organs have ...

Ghale-madreseh is the first point that the saline and sulfurous streams flow into Tembi River, one of the well-known saline rivers in Khuzestan province, Iran. This river is one of the main sources of increasing Karun River’s salinity, which is the largest river in Iran in terms of discharge. There are three saline and sulfurous springs (Shour-1, Shour-2m and Namak Springs) as well as a drinkab...