The 4f-5d transitions of Er3+ ions doped in crystals were widely studi ed due to their potential applications in quantum cutting phosphors and VUV lase rs,etc.The theory to do the calculations of 4f-5d transitions and...The 4f-5d transitions of Er3+ ions doped in crystals were widely studi ed due to their potential applications in quantum cutting phosphors and VUV lase rs,etc.The theory to do the calculations of 4f-5d transitions and various rela ted aspects,such as the ways to determining various parameters,were summarized .The impacts of various interactions on the spectra were also demonstrated clea rly with Er3+ ions in crystals CaF2 and LiYF4.Predicted results were compared w ith measured spectra.展开更多
为校正突发性水污染事件风险评价中因多因素和不确定性带来的风险评价误差,本研究提出基于ALARP(As Low As Reasonably Practicable)原则的突发性水污染事件风险评价方法,即以基于ALARP原则的"F-D"图为基础,通过对计算危险源...为校正突发性水污染事件风险评价中因多因素和不确定性带来的风险评价误差,本研究提出基于ALARP(As Low As Reasonably Practicable)原则的突发性水污染事件风险评价方法,即以基于ALARP原则的"F-D"图为基础,通过对计算危险源分级指标和分析事故发生概率,确定其在图中所处的区域,从而确定风险性质。并且以此为指导提出相应的风险管理建议。本研究将孟津化肥厂作为案例,成功地应用该方法对其进行了突发性水污染事件的风险评价。本研究成果可为突发性水污染事件的风险评价及风险管理提供较为实用的方法和依据。展开更多
基金Project supported by the National Natural Science Foundation of China (10874173,10704090,11074315,11011120083)the Foundation of the Education Committee of Chongqing (KJ090523)the Knowledge Innovation Project of the Chinese Academy of Sciences (KJCX2-YW-M1)
文摘The 4f-5d transitions of Er3+ ions doped in crystals were widely studi ed due to their potential applications in quantum cutting phosphors and VUV lase rs,etc.The theory to do the calculations of 4f-5d transitions and various rela ted aspects,such as the ways to determining various parameters,were summarized .The impacts of various interactions on the spectra were also demonstrated clea rly with Er3+ ions in crystals CaF2 and LiYF4.Predicted results were compared w ith measured spectra.
文摘为校正突发性水污染事件风险评价中因多因素和不确定性带来的风险评价误差,本研究提出基于ALARP(As Low As Reasonably Practicable)原则的突发性水污染事件风险评价方法,即以基于ALARP原则的"F-D"图为基础,通过对计算危险源分级指标和分析事故发生概率,确定其在图中所处的区域,从而确定风险性质。并且以此为指导提出相应的风险管理建议。本研究将孟津化肥厂作为案例,成功地应用该方法对其进行了突发性水污染事件的风险评价。本研究成果可为突发性水污染事件的风险评价及风险管理提供较为实用的方法和依据。
