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Generating renewable energy from ocean and river currents
A device designed to capture and convert energy from ocean and river currents has been developed to provide a source of clean and renewable energy. The designers suggest that energy produced by the device will be cheaper than that from either solar or wind power and offer distinct advantages over standard hydropower technologies. Unlike other forms of hydropower technologies, such as turbines and water mills, the device, called the VIVACE (vortex induced vibration for aquatic clean energy) converter, can generate electricity from slow moving water, typically found in ocean and river currents. ... |
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20 years of monitoring provides insight into New Zealand`s river water quality
Two decades of monitoring of river water quality by NIWA has provided important information that is helping to care for New Zealand’s iconic rivers. More than 18 000 river water samples have been collected by New Zealand’s National Rivers Water Quality Network (NRWQN) over the past 20 years to monitor river conditions. The Network, which was set up to detect trends and conditions in water quality, as well as providing advice to government on the management of water resources, is now celebrating its 20th birthday.
Every month since 1989, NIWA field staff have visited 77 sites, (mostly upstream ... |
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After a promising feasibility study in 2005, to the possibilities/benefits of Green Energy production from potato waste and the processing of waste water ...
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