Squamostatin-B (1), a new polyketide or acetogenin, has been isolated from Annona squamosa L. (Annonaceae). Its structur......

介绍了采用基于模拟退火的粒子群算法（PSO-SA），应用Gupta多体势函数和Sutton-Chen势函数对铝团簇Aln（n≤13）的基态能量进行了计算，并给出......