The Green Bay Packers have removed the scoreboards from Lambeau Field and are preparing them for recycling.
The scoreboards will be replaced by Mitsubishi Diamond Vision video boards. The video screens, 108 feet wide and 48 feet high, will be about the size of the scoreboards that were removed. They will be in place for the 2012 season.
The Packers said scoreboard recycling is rare, but they hope to find other uses for steel, aluminum, vinyl, ad panels, wiring, circuit boards, LED display units and lighting fixtures.
The boards will be partially disassembled at the stadium before being shipped to refineries and recyclers. Lights will be processed to remove mercury, gas and other potential pollutants.
Waste Management is the recycling contractor.
Lambeau Field is in the midst of a $143 million expansion, which includes adding 6,700 seats, replacing the scoreboards, and installing new entrances and a rooftop viewing area for club-seat ticket holders. A new sound system was in place for the 2011 season.
Chemists at the University have uncovered the solid state structures of dimethylzinc and diethylzinc, two compounds that played a fundamental role in the development of modern chemistry, according to the University of Liverpool.
Both compounds spontaneously ignite in air and such high reactivity has made it difficult for scientists to study their crystal structures. The team at Liverpool – in collaboration with SAFC Hitech, a developer of advanced new materials – used a combination of experimental and computational methods to determine the compounds' structures.
The synthesis of dimethylzinc and diethylzinc by Edward Frankland in the 1850s was a key moment in the history of chemistry. It marked the birth of organometallic chemistry, a major branch of modern chemistry that deals with compounds containing direct bonds between metal and carbon atoms. Such compounds are of huge significance in areas such as catalysis, pharmaceuticals, polymers, electronics and nanomaterials.
Dimethylzinc and diethylzinc are important members of this class because of their unique properties. Although they contain metal atoms, they are volatile liquids at room temperature and also extremely reactive. This has led to a wide range of applications in chemical and materials synthesis for example for the production of thin film semiconductors, which are fundamental components of LED displays, domestic and automobile lighting, CD lasers, back-lit televisions and traffic lights.
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