發送短信

數:

提供者:

CAPTCHA:

  ______     ___                 ___      _____   
 /_   _//   / _ \\    ____      / _ \\   / ____|| 
 `-| |,-   / //\ \\  |    \\   | / \ || / //---`' 
   | ||   |  ___  || | [] ||   | \_/ || \ \\___   
   |_||   |_||  |_|| |  __//    \___//   \_____|| 
   `-`'   `-`   `-`  |_|`-`     `---`     `----`  
                     `-`

Please enter what you see:

發送短信 : Mesoporous niobium oxide spheres as an effective catalyst for the transamidation of primary amides with amines