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...  The arborloo does not make use of containers nor effective/optimal nutrient recycling. Instead, faeces falls into a pit untill it becomes full. At that moment, a new pit is dug and the old pit with faeces ...
... an ecosystem should not exceed its natural replacement rate. Energy conservation - Water pumping, delivery, and wastewater treatment facilities consume a significant amount of energy. In some regions ...
... roots in ecology as the ability of an ecosystem to maintain ecological processes, functions, biodiversity and productivity into the future. To be sustainable, nature’s resources must only be used at a ...
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... to unmanned aerial vehicles (UAV) with the Pathfinder (1997) and subsequent designs, culminating in the Helios which set the altitude record for a non-rocket-propelled aircraft at 29,524 metres (96,860 ft) ...
... reformation of natural gas thereby increasing the overall hydrogen yield. Thermochemical cycles characterized by the decomposition and regeneration of reactants present another avenue for hydrogen production. ...
... decommissioning in 1989. A solar pond is a pool of salt water (usually 1–2 m deep) that collects and stores solar energy. Solar ponds were first proposed by Dr. Rudolph Bloch in 1948 after he came across ...
... the prototype selenium cells converted less than 1% of incident light into electricity, both Ernst Werner von Siemens and James Clerk Maxwell recognized the importance of this discovery. Following the ...
... plants are becoming common. Completed in 2007, the 14 MW power station in Clark County, Nevada and the 20 MW site in Beneixama, Spain are characteristic of the trend toward larger photovoltaic power stations ...
Solar distillation can be used to make saline or brackish water potable. The first recorded instance of this was by 16th century Arab alchemists. A large-scale solar distillation project was first constructed ...
The history of lighting is dominated by the use of natural light. The Romans recognized a right to light as early as the 6th century and English law echoed these judgments with the Prescription Act of ...
Solar energy technologies use solar radiation for practical ends. Technologies that use secondary solar resources such as biomass, wind, waves and ocean thermal gradients can be included in a broader description ...
... biomass from which fossil fuels are derived. Solar radiation along with secondary solar resources such as wind and wave power, hydroelectricity and biomass account for over 99.9% of the available flow ...
... and organizations that are direct consumers of energy may want to conserve energy in order to reduce energy costs and promote economic security. Industrial and commercial users may want to increase efficiency ...
... content of energy sources is also needed. A sustainable energy economy thus requires major commitments to both efficiency and renewables.  ...
Using improved aerodynamics to minimize drag can increase vehicle fuel efficiency. Reducing vehicle weight can significantly also improve fuel economy. More advanced tires, with decreased tire to road ...
... well-sealed doors, and additional thermal insulation of walls, basement slabs, and foundations can reduce heat loss by 25 to 50 percent. Dark roofs may become up to 70°F hotter than the most reflective ...
... has proved to be a cost-effective strategy for building economies without necessarily growing energy consumption, as environmental business strategist Joel Makower has noted. For example, the state of ...
... lower prices, stimulating consumption, however few business managers seem to agree with this view. The use of telecommuting by major corporations is a significant opportunity to conserve energy, as many ...
... for its potential to mitigate global warming profitably. Forms of energy recycling Waste heat recovery is a process that captures excess heat that would normally be discharged at manufacturing facilities ...
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Taxonomy by Zaragoza Online