Top: Science: Energy: Bioenergy: Terminology: N

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Net present value

The sum of the costs and benefits of a project or activity. Future benefits and costs are discounted to account for interest costs.


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Nitrogen fixation

The transformation of atmospheric nitrogen into nitrogen compounds that can be used by growing plants.


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Noncondensing, controlled extraction turbine

A turbine that bleeds part of the main steam flow at one (single extraction) or two (double extraction) points. 



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