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  ______   __   __    ____      _____     _____   
 /_   _//  \ \\/ //  |  _ \\   |  ___||  / ____|| 
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   |_||      |_||    |_|\_\\   |_____||  \_____|| 
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Text this: Effect of poling time on piezoelectric properties of 0-3 PZT-Portland cement composites