The environmental impacts of dams have come under renewed examination in recent years.

Dam proponents have historically understood that dams largely improve the status of water-related energy and environmental issues by, for example, producing hydroelectric power and increasing the water supply for irrigation. Recently however, the negative impacts of dams have come increasingly into focus. Discussion over whether dam projects are ultimately beneficial or detrimental--to both the environment and surrounding human populations--has emerged wit ....etc

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sir/madam,i would like to do a seminar on this topic.since i don't have sufficient data regarding this topic.so kindly give me the material regarding the topic. ....etc

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A washing machine (laundry machine, clothes washer, or washer) is a machine used to wash laundry, such as clothing and sheets. The term is mostly applied to machines that use water as opposed to dry cleaning (which uses alternative cleaning fluids, and is performed by specialist businesses) or ultrasonic cleaners.A washing machine is a machine that washes dirty clothes. It contains a barrel into which the clothes are placed. This barrel is filled with water, and then rotated very quickly to make the water remove dirt from the clothes. Most wash ....etc

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Hydroelectric dams

Background and context
Dams have existed for thousands of years for various purposes, such as irrigation and flood-control. In the 19th century, they began to be used for hydroelectricity, and by the 20th century, they had become a mainstay of electricity generation. As of 2005, hydroelectric power, mostly from dams, supplied 19% of the world's electricity, and over 63% of renewable energy. Yet, dams have been the subject of significant controversy among environmentalists in recent decades, mainly due to the ....etc

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Presented By:ABHINAV ANKURDAMS

Dams
Dam is a solid barrier constructed at a suitable location across a river valley to store flowing water.
Storage of water is utilized for following objectives:
Hydropower
Irrigation
Water for domestic consumption
Drought and flood control
For navigational facilities
Other additional utilization is to develop fisheries
TYPES OF DAMS
Gravity Dams:
These dams are heavy and massive wall ....etc

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seminar report on piano key spillways for dams

Similar to labyrinth weirs, piano key (PK) weirs are folded in plan to increase discharge capacity for a given spillway channel width. Because of their configuration, PK weirs may be better suited than labyrinth weirs for applications where the weir footprint (length and/or width) dimensions are restricted (e.g., crest of gravity dams) as PK weirs can facilitate a significant amount of weir length relative to their footprint size. For channel applications without significant footprint restrictions ....etc

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application of gis in site selection for dams ppt

ABSTRACT Analysis of Color Aerial Photographs inconjuction with several software programs, on the HRH Tasneem Bint Ghazi for Agriculture Research was used to evaluate the relative effectiveness of this product, and the potential role of each software programme for preparing several thematic layers as an input to GIS data model in order to locate Dams in the two main drainage basins, Wadi ad Dafali and Wadi Umm Qatffa. The study area is an approximately 12 km2 tract located in western Jordan and ....etc

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Seminar On Dams
Dams
Definition:-
Dam is a solid barrier constructed at a suitable location across a river valley to store flowing water.
Storage of water is utilized for following objectives:
Hydropower
Irrigation
Water for domestic consumption
Drought and flood control
For navigational facilities
Other additional utilization is to develop fisheries
TYPES OF DAMS
GRAVITY DAMS:
These dams are heavy and massive wall-like structures of concrete in which the whole weight acts vertically ....etc

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