News tagged with water flow
Most river flows across the US are altered by land and water management
The amount of water flowing in streams and rivers has been significantly altered in nearly 90 percent of waters that were assessed in a new nationwide USGS study. Flow alterations are a primary contributor to degraded river ...
Nov 03, 2010 |
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MRI zooms in on microscopic flow (w/ Video)
(PhysOrg.com) -- MRI images of water flow through a constricted microfluidic channel with the XZ axis on the left and the YZ axis on the right. Note that fast moving components directly aligned with the constricted ...
Chemistry / Analytical Chemistry
Oct 07, 2010 |
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First satellite measurement of water volume in Amazon floodplain
For the first time, scientists have been able to measure the amount of water that rises and falls annually in the Amazon River floodplain.
Space & Earth / Earth Sciences
Aug 05, 2010 |
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Hydrokinetic proposal for Mississippi river
(PhysOrg.com) -- Everyone is looking for alternative forms of energy, and one company proposes to generate electricity from the flow of the river Mississippi in the US, without using dams to control the water ...
Technology / Energy & Green Tech
Mar 23, 2010 |
4.5 / 5 (12) |
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More reliable forecasts for water flows can reduce price of electricity
Brazil, Canada, China, the US, Russia, Norway, Japan, and Sweden are among the largest producers of hydroelectric power in the world. One problem for hydroelectric power companies is that the great variations in the river ...
Jan 19, 2010 |
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1,000m underground central heating system planned
(PhysOrg.com) -- A pioneering scheme to build a giant central heating system that will harness heat from deep underground is being developed by university scientists.
Space & Earth / Earth Sciences
Jan 12, 2010 |
5 / 5 (6) |
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NASA tech zooms in on water and land
In a pilot project that could help better manage the planet's strained natural resources, space-age technologies are helping a Washington state community monitor its water availability. NASA satellites and ...
Dec 15, 2009 |
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Over 1,000 fish species 'threatened with extinction'
More than 1,000 freshwater fish species are threatened with extinction, reflecting the strain on global water resources, an updated global "Red List" of endangered species showed Tuesday.
Nov 03, 2009 |
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Some Canadian rivers at risk of drying up
(PhysOrg.com) -- Some Canadian rivers are at risk of drying up as impacts of climate change intersect with growing water demand from the country's cities, industries and agriculture, a new WWF report has found.
Oct 15, 2009 |
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UN study advises caution over dams
(AP) -- A dam-building spree in China poses the greatest threat to the future of the already beleaguered Mekong, one of the world's major rivers and a key source of water for the region, a U.N. report said ...
May 21, 2009 |
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Membrane filters are key to future of public water supply, scientists say
As municipalities across the United States reduce their dependence on groundwater sources to mitigate environmental impacts like subsidence and flooding, there is a growing need for better purification processes to keep contaminants ...
Apr 21, 2009 |
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Water levels dropping in some major rivers as global climate changes
Rivers in some of the world's most populous regions are losing water, according to a new comprehensive study of global stream flow. The study, led by scientists at the National Center for Atmospheric Research ...
Space & Earth / Earth Sciences
Apr 21, 2009 |
4.3 / 5 (20) |
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Turning the tide to energy
NASA researchers who developed a new way to power robotic underwater vehicles believe a spin-off technology could help convert ocean energy into electrical energy on a much larger scale. The researchers hope ...
Mar 06, 2009 |
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A further study of Helicobacter pylori reducing gastric blood flow
A research group from Sweden investigated the mechanisms underlying the reduction in gastric blood flow induced by a luminal water extract of Helicobacter pylori (H. pylori). They found that the H. pylori water extract reduces ...
Medicine & Health / Medical research
Jan 21, 2009 |
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