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 _    _    __   __   _____     _    _    __   __  
| |  | ||  \ \\/ // |  __ \\  | || | ||  \ \\/ // 
| |/\| ||   \ ` //  | |  \ || | || | ||   \   //  
|  /\  ||    | ||   | |__/ || | \\_/ ||   / . \\  
|_// \_||    |_||   |_____//   \____//   /_//\_\\ 
`-`   `-`    `-`'    -----`     `---`    `-`  --`

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Text this: Post-buckling loads of a horizontal pipe string with variable length