I.rise,arise和raise【情景对话】Adam:The global population has hit 7 billion so far,up from 6 billion in 1999. Erin:That number will continue to rise, which mean
An efficient synthesis of tetrahydroquinoline derivatives is reported via three component coupling reactions of aldehydes and anilines with various dienophiles
In this paper, we first derive the representation theorem of onto isometric mappings in the unit spheres of real l∞-type spaces, then we conclude that such map