Text this: A novel atmospheric freeze-drying system using a vortex tube and multimode heat supply

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