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Thursday, 16 November 2006 01:00 |
A Bubble is a system under which existing emissions sources can propose alternate means to comply with a set of emissions limitations; under the bubble concept, sources can control more than required at one emission point where control costs are relatively low in return for a comparable relaxation of controls at a second emission point where costs are higher.
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"Bubble" is in the UNSPSC Code "23201005"
  Bubble columns
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Marine Corps barrage balloons, Parris Island, S.C. (LOC)by The Library of CongressPalmer, Alfred T.,, photographer.
Marine Corps barrage balloons, Parris Island, S.C.
1942 May
1 transparency : color.
Notes:
Title from FSA or OWI agency caption.
Transfer from U.S. Office of War Information, 1944.
Subjects:
United States.--Marine Corps
World War, 1939-1945
Barrage balloons
Air bases
United States--South Carolina--Parris Island
Format: Transparencies--Color
Rights Info: No known restrictions on publication.
Repository: Library o . . . | 
Mz 3, BD+30-3639, Hen 3-1475, and NGC 7027: Planetary Nebulas - Fast Winds from Dying Starsby Smithsonian InstitutionDescription: A bubble of 3 million degree Celsius gas with a length about a hundred times that of our solar system is shown in the image. NGC 7027 is the remains of a Sun-like star that has ejected much of its mass to expose its hot core. The X-rays are thought to be produced when a "fast" wind from the hot core collides with the "slow" wind that was ejected earlier during the star's red giant phase. This collision heats the matter to several million degrees so that i . . . | | |
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