أرسل هذا في رسالة قصيرة: Preparation of activated carbon from date stones as a catalyst to the reactivity of hydroquinone: Application in skin whitening cosmetics samples

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