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            ______  __    __     ___      ______  
  ____     /_   _// \ \\ / //   / _ \\   /_   _// 
 |    \\    -| ||-   \ \/ //   / //\ \\    | ||   
 | [] ||    _| ||_    \  //   |  ___  ||  _| ||   
 |  __//   /_____//    \//    |_||  |_|| /__//    
 |_|`-`    `-----`      `     `-`   `-`  `--`     
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Text this: Molecular orientation, crystallinity, and topographical changes in sliding and their frictional effects for UHMWPE film