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   _____   _    _     ______     ___       _____  
  / ___// | || | ||  /_____//   / _ \\    / ___// 
  \___ \\ | || | ||  `____ `   / //\ \\   \___ \\ 
  /    // | \\_/ ||  /___//   |  ___  ||  /    // 
 /____//   \____//   `__ `    |_||  |_|| /____//  
`-----`     `---`    /_//     `-`   `-` `-----`   
                     `-`

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Text this: Dual-layer polyethersulfone (PES)/BTDA-TDI/MDI co-polyimide (P84) hollow fiber membranes with a submicron PES-zeolite beta mixed matrix dense-selective layer for gas separation