أرسل هذا في رسالة قصيرة: Ultraviolet-ray treatment of polysulfone membranes on the O<inf>2</inf>/N<inf>2</inf> and CO<inf>2</inf>/CH<inf>4</inf> separation performance

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