Abstract The most important design index of water intakes is critical submergence depth the intake. at which air core formed by vortex about to enter emergence a and entry into intake increase head loss decrease discharge coefficient. reservoir geometric asymmetry, presence unevenness in bottom angle approach flow are among factors that influence formation depth. In this research, physical mode...

Abstract. In this paper, we value hydroelectric power plant cash flows under a stochastic control framework, taking into consideration the implication of operational constraints such as ramping and minimum flow rate constraints for the purpose of environmental protection. The power plant valuation problem under a ramping constraint is characterized as a bounded stochastic control problem, resul...

This paper examines the effects of increased intermittency, caused by climate change, on strategic hydroelectric production when wind power is integrated with hydroelectricity. It is shown that increased uncertainty in water inflows caused by climate change raises hydroelectric output and increases the probability of overflow in future periods. The increased variability of wind speeds due to cl...

The Rhine catchment in Switzerland has been transformed by a chain of hydroelectric power stations. We addressed the impact of fragmentation on the genetic structure of fish populations by focusing on the European chub (Squalius cephalus). This fish species is not stocked and copes well with altered habitats, enabling an assessment of the effects of fragmentation per se. Using microsatellites, ...

Mercury (Hg) can reach toxic concentrations in aquatic habitats, sometimes as a consequence of human activity. Mercury can have deleterious effects, particularly in piscivorous mammals in which it bioaccumulates. Furs from trapper-provided female otter (Lontra canadensis) carcasses in Nova Scotia were analyzed for total Hg. Concentrations of total Hg in fur samples averaged 25 µg/g dry weight, ...

In the article, experiences of developed countries in introducing mobile solar and garland micro- hydroelectric power plants mountain regions cannot be directly applied to conditions Uzbekistan. Kosonsoy district, located east Uzbekistan, belongs mountainous regions. Mobile micro-hydroelectric plant is an acceptable option for electricity supply small consumers district. Preliminary data, drawi...