Stalactite basin structure of dynamical systems with transient chaos in an invariant manifold
作者:Vasily Dronov、Edward Ott
DOI:10.1063/1.166495
日期:2000.6
invariant manifold and another attractor not in the invariantmanifold. It is found that the boundary separating these basins has an interesting structure: The basin of the attractor not in the invariantmanifold is characterized by thin cusp shaped regions ("stalactites") extending down to touch the nonattracting chaotic set in the invariantmanifold. We also develop theoretical scalings applicable to
Solvent-Free Synthesis of<i>N,N</i>′-Diarylureas Using Microwave Technology
作者:Ting Sun、Jing Li、Yu-Lu Wang
DOI:10.1002/jccs.200300065
日期:2003.6
A simple and rapid solvent-freesynthesis of N,N′-diarylureas in a microwave oven has been reported for the first time. Nine compounds were synthesized. The reaction time is short (2∼5 min) and gives excellent yield (80–95%).