Theoretical XANES spectra for C76 isomers

Two isolated pentagon rule satisfying isomers of C76 are optimized. And 1（D2） isomer is reconfirmed to be the relative more stable one. The X-ray absorption near-edge structure （XANES） spectra are theoretically characterized by the hybrid density functional theory （DFT） method in combination with the full core-hole potentials. Isomer identification of XANES spectra for Cr6 is found and XANES spectra dependence on local structure of fullerene is discussed.     

超声波在老厂房加固改造中的应用

用超声波评价老厂房混凝土构件质量是以声波在不同质量的混凝土构件中传播速度不同为依据的,根据速度变化大小,对混凝土构件质量进行分级.它为老厂房合理地进行加固、改造,可提供科学依据,节约加固费用,缩短停产时间.本文阐述了超声波法应用于老厂房(混凝土构件)加固、改造中的可行性,并介绍了一则现场应用实例.