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  2. Funktion-One - Wikipedia

    en.wikipedia.org/wiki/Funktion-One

    Funktion-One Russia supplied and installed a permanent state of the art sound system for Volgograd Arena — one of the Russian World Cup 2018 stadia. Working closely with the Funktion-One design team in the UK, the company specified a system that features 638 Funktion-One loudspeakers and 50 MC2 Audio amplifiers.

  3. KEF - Wikipedia

    en.wikipedia.org/wiki/KEF

    In KEF: 50 Years of Innovation in Sound, the authors assert that KEF reduced the average size of bass-rich home loudspeakers from 9–10 cubic feet (250–280 L) to about 2 cubic feet (57 L), based on the work on the "acoustic-suspension woofer" at Acoustic Research.

  4. Waste stabilization pond - Wikipedia

    en.wikipedia.org/wiki/Waste_stabilization_pond

    Compared with anaerobic ponds, facultative ponds are shallower (1.5 to 2.5 m deep) and have much larger surface areas. The surface area is important because it allows atmospheric oxygen to dissolve and sunlight radiation to penetrate the water. This allows for photosynthetic activity to occur which produces more oxygen. [citation needed]

  5. Facultative lagoon - Wikipedia

    en.wikipedia.org/wiki/Facultative_lagoon

    Facultative lagoon (polishing pond) providing tertiary treatment after a constructed wetland in Hamburg-Allermöhe, Germany. Overflow from the facultative lagoon may be routed through one or more polishing ponds supporting lower populations of anaerobic micro-organisms and a higher proportion of aerobic organisms adapted to survival in lower concentrations of organic material.

  6. Oil sands tailings ponds (Canada) - Wikipedia

    en.wikipedia.org/wiki/Oil_sands_tailings_ponds...

    Oil sand tailings or oil sands process-affected water (OSPW), have a highly variable composition and a complex mixture of compounds. [4] In his oft-cited 2008 journal article, E. W. Allen wrote that typically tailings ponds consist of c. 75% water, c. 25% sand, silt and clay, c.2% of residual bitumen, as well as dissolved salts, organics, and minerals.

  7. Ixelles Ponds - Wikipedia

    en.wikipedia.org/wiki/Ixelles_Ponds

    The Ixelles Ponds (French: Étangs d'Ixelles) or Elsene Ponds (Dutch: Vijvers van Elsene) are two freshwater ponds in the Brussels municipality of Ixelles, Belgium.The ponds we can see today are those spared by a 19th-century campaign of drying the wetlands of the Maelbeek valley between La Cambre Abbey and the Place Eugène Flagey/Eugène Flageyplein.

  8. Hampstead Heath Ponds - Wikipedia

    en.wikipedia.org/wiki/Hampstead_Heath_Ponds

    Hampstead ponds no. 1 is strictly a nature/wildlife pond and Hampstead pond no. 2 permits angling. Directly northwest of the mixed bathing pond is the "Viaduct Pond" and west of that is the Vale of Health pond; these are arguably within the flow of the "Hampstead ponds", but are not officially members of the group.

  9. Cooling pond - Wikipedia

    en.wikipedia.org/wiki/Cooling_pond

    Each cooling pond had a capacity of 0.75 million gallons per hour (0.95 m 3 /s). [12] Make up water was abstracted from the nearby River Tonge. In about 1950 a hyperbolic reinforced concrete cooling tower was built with a capacity of 2.5 million gallons per hour (3.15 m 3 /s), with cooling range of 15 °F (8.3 °C). [ 12 ]

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