Ozone vacuum-ultraviolet (VUV) ozone generators, employ a light source that generates a narrow-band ultraviolet light, a subset of that produced by the Sun. The Sun's UV sustains the ozone layer in the stratosphere of Earth. UV ozone generators use ambient air for ozone production, no air prep systems are used (air dryer or oxygen concentrator), therefore these generators tend to be less expensive. However UV ozone generators usually produce ozone with a concentration of about 0.5% or lower which limits the potential ozone production rate. Another disadvantage of this method is that it requires the ambient air (oxygen) to be exposed
The Lord of the Rings: The Battle for Middle-earth for Best of E3 2004 Editors Choice. "The Battle for Middle-earth" was nominated for "X-Play"s "Best Strategy Game" and "PC Gamer US"s "Best Real-Time Strategy Game 2004" awards, both of which ultimately went to "". The Lord of the Rings: The Battle for Middle-earth The Lord of the Rings: The Battle for Middle-earth is a real-time strategy video game developed by EA Los Angeles for Microsoft Windows. It was released in December 6, 2004 and is based on Peter Jackson's "The Lord of the Rings" film trilogy, in turn based on J. R. R. Tolkien's original novel. The game uses