<正>A new flavonoid was isolated from the bract of Zea mays L.The structure of the compound was identified as 4',5,7-trihydroxy-3',5'-dimethoxyflavo
<正>The layer-by-layer(LBL) self assembly of anionic and cationic multi-walled carbon nanotubes(MWNTs) through electrostatic interaction has been carried out to