نتایج جستجو برای: environmental flow
تعداد نتایج: 839789 فیلتر نتایج به سال:
Construction of Reservoir dams on the river, in addition to change and decrease the river’s regime in downstream, cause environmental problems for ecosystems. This issue can be more severe by dumping pollution into rivers. Therefore, estimating the minimum environmental flow for river systems and other aquatic ecosystems is necessary to keep environment and water resources. In this study, the e...
The Urmia Lake has distinctive nature, hydrodynamic and environmental properties that single out that from the other lakes in the world. Construction of Shahid Kalantari causeway can cause significant effects on natural regime of the lake. It may affect on environmental biology, hydraulic, water circulation regime and … . This paper deals with hydrodynamics of the lake. Two-dimensional s...
flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...
It has been subjected to the Agency's peer and administrative reviews and has been approved for publication as an EPA document. Mention of trade names or commercial products does not constitute an endorsement or recommendation for use. iii Foreword The U. S. Environmental Protection Agency (EPA) is charged by Congress with protecting the Nation's land, air, and water resources. Under a mandate ...
(6) Long-term unattended operation. (7) Periodic recalibration. (8) Easy on-site maintenance. Water quality Water quality is a subject of increasing public interest and awareness. With regard to chemical parameters in particular it is also an area that has been the subject of increasingly stringent national and international legislation based on EC directives, for example, for the discharge of ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید