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Purdue University engineers are applying lessons learned from Japan's Kobe earthquake to their own research into the stability of bridges. Julio A. Ramirez, associate professor of structural engineering at Purdue, was one of a seven-member reconnaisance team that traveled to Japan just a few days after the January 17 quake. In general, he says, the buildings and bridges that suffered the most damage were those built between the end of World War II and the 1970s, when building materials such as steel were expensive and modern building codes were not yet in place.