A fast computing method to distinguish the hyperbolic trajectory of an non-autonomous system

Attempting to find a fast computing method to DHT(distinguished hyperbolic trajectory),this study first proves that the errors of the stable DHT can be ignored in normal direction when they are computed as the trajectories extend.This conclusion means that the stable flow with perturbation will approach to the real trajectory as it extends over time.Based on this theory and combined with the improved DHT computing method,this paper reports a new fast computing method to DHT,which magnifies the DHT computing speed without decreasing its accuracy.     

Eu(TTFA)3掺杂SiO2胶体球的制备与荧光光谱特性

制得了稀土配合物Eu(TTFA)3掺杂的SiO2胶体球,并用透射电子显微镜（TEM）和荧光分光光度计对其形貌和荧光光谱特性进行了详细地研究.TEM形貌分析表明,掺杂SiO2胶体颗粒具有球状的外形和光滑的表面,平均直径约为300 nm.荧光光谱分析表明,该稀土配合物掺杂胶体颗粒具有Eu3+离子典型的荧光光谱特性,荧光寿命约为290 μs.进一步分析实验数据,发现在Eu(TTFA)3掺杂浓度为质量分数0.5～1.5的范围内,荧光强度随着掺杂浓度的增加而增加,而荧光寿命几乎不随掺杂浓度而变化.     

稀土离子（Sm3+）有机配合物的合成及光谱性能的研究

本文合成了稀土离子（Sm3+）的三种β二酮类二元有机配合物Sm(HFA)3，Sm(TTA)3和Sm(DBM)3.对配体HFA，HTTA和DBM及配合物Sm(HFA)3，Sm(TTA)3和Sm(DBM)3的吸收光谱和荧光光谱进行了测试与分析.发现Sm(HFA)3和Sm(TTA)3在645 nm处（对应Sm3+的4G5/2→6H9/2跃迁）有很强的荧光峰，可以观察到明显的红色荧光.并且分析了配合物和配体的能级结构、配体的取代基、配体结构对称性以及C-H键含量对配合物光谱性能的影响，证明了HTTA是Sm3+发红色荧光的优良配体.