In April, AAC Capital Partners, a Northern European mid-market buyout firm, announced that it had agreed to sell Inalfa Roof Systems Group B.

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The company, which specializes in modular live roof systems, has supplied more than 3 million square feet of green roof, including around 30% for residential use, in just the last few years.

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You can put it on your roof, but unlike other systems where you have 20 to 30 solar panels and the only option is to put them on your roof, here's a situation where you have two or three and you can put them wherever you like.

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Ms. Abernathy noted that aside from the unexpected height of the storm surge, Christie's was well prepared for Sandy, with generators on the roof that kept the security systems and climate controls up and running through the storm.

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Using a mechanism known as a power purchase agreement (PPA), such companies as Wal-Mart Stores and Whole Foods Market have contracted with third parties that install, own and maintain solar power systems that typically sit on the roof of a corporate outlet.

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Health-care systems must meet people where they are and offer a comprehensive package of services under one roof.

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There are numerous references to so-called "Books of Knowledge, " highly confidential information on design, safety systems and testing records allegedly generated by Toyota engineers on everything from roll-overs and roof safety to sudden unintended acceleration.

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New transport systems to take spectators to the stadiums are delayed and embarrassingly, the elaborate glass and metal roof designed by Santiago Calatrava, a Spanish architect, may not be ready for the main athletics stadium in time.

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