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    ___     / _ \\   | \| ||   / _ \\  | || | || 
   /   ||  | / \ ||  |  ' ||  / //\ \\ | '--' || 
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    -|_||   `---`    `-` -`  `-`   `-` `-`  `-`  
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Text this: Gas separation performance of poly(4-vinylpyridine)/polyetherimide composite hollow fibers