Relativistic configuration interaction calculations for the states of 1s^22s^2, 1s^22s3l （l = s,p,d） and 1s^22p31 （l=s,p,d） configurations of iron are carried out using relativistic configuration interaction （RCI...Relativistic configuration interaction calculations for the states of 1s^22s^2, 1s^22s3l （l = s,p,d） and 1s^22p31 （l=s,p,d） configurations of iron are carried out using relativistic configuration interaction （RCI） and multi-configuration Dirac-Fock （MCDF） method in the active interaction approach. In the present calculation, a large-scale configuration expansion was used in describing the target states. These results are extensively compared with other available calculative and experimental and observed values, the corresponding present results are in good agreement with experimental and observed values, and some differences are found with other available calculative values. Because more relativistic effects are considered than before, the present results should be more accurate and reliable.展开更多
The surface nanocrystallization of amorphous Fe73.5 Cu1Nb3Si13.5B9 radiated by CO2 laser was studied by means of M（oe）ssbauer spectroscopy, transmission electro iroscope and X-ray diffraction. The result shows that ...The surface nanocrystallization of amorphous Fe73.5 Cu1Nb3Si13.5B9 radiated by CO2 laser was studied by means of M（oe）ssbauer spectroscopy, transmission electro iroscope and X-ray diffraction. The result shows that under certain technical conditions, nanocrystalline is fiound on the surface of amorphous Fe73.5 Cu1Nb3Si13.5B9 radiated by laser; the crystallization phase is α-Fe（Si） crystalline, and its size is about 10-20 nm; the nanocrystalline is uniformly distributed on amorphous base to keep the amorphous and crystallized phase in balance; the a mount of crystallization reaches 23% when the laser power is 300 W, the diameter of light spot is 20 mm, and the radiation speed is 20 mm/s. The phase balance can be controlled by adjusting the laser technology parameter. Laser radiation on the amorphous Fe73.5 Cu1Nb3Si13.5B9 alloy is an important technique for surface nanocrystallization of the amorphous alloys.展开更多
采用中温上流式厌氧污泥床反应器在(35±1)℃下处理污泥热脱水滤液,以考察其COD去除能力和产能前景.实验运行参数如下:污泥负荷为0.05~0.39 kg COD/(kg污泥·d),水力停留时间为69.5 h,中温接种污泥为高温处理污泥热脱水滤液的...采用中温上流式厌氧污泥床反应器在(35±1)℃下处理污泥热脱水滤液,以考察其COD去除能力和产能前景.实验运行参数如下:污泥负荷为0.05~0.39 kg COD/(kg污泥·d),水力停留时间为69.5 h,中温接种污泥为高温处理污泥热脱水滤液的实验污泥.实验结果表明:运行稳定后COD去除率达75%以上,最大日产CH4量为266.46 mL/L,总气体产量中甲烷占比52.29%以上.反应器运行稳定后,VFA去除率可达95%以上;氨氮浓度在3.5~6.6 g/L时出现对产甲烷活性的抑制.经过40多天的实验发现,中温UASB反应器能有效去除污泥热脱水液中的COD,可有效去除氨氮,可用于污泥再处理产生的高浓度污水处理.展开更多
基金supported by the Leshan Teachers College under Grant No.206113
文摘Relativistic configuration interaction calculations for the states of 1s^22s^2, 1s^22s3l （l = s,p,d） and 1s^22p31 （l=s,p,d） configurations of iron are carried out using relativistic configuration interaction （RCI） and multi-configuration Dirac-Fock （MCDF） method in the active interaction approach. In the present calculation, a large-scale configuration expansion was used in describing the target states. These results are extensively compared with other available calculative and experimental and observed values, the corresponding present results are in good agreement with experimental and observed values, and some differences are found with other available calculative values. Because more relativistic effects are considered than before, the present results should be more accurate and reliable.
文摘The surface nanocrystallization of amorphous Fe73.5 Cu1Nb3Si13.5B9 radiated by CO2 laser was studied by means of M（oe）ssbauer spectroscopy, transmission electro iroscope and X-ray diffraction. The result shows that under certain technical conditions, nanocrystalline is fiound on the surface of amorphous Fe73.5 Cu1Nb3Si13.5B9 radiated by laser; the crystallization phase is α-Fe（Si） crystalline, and its size is about 10-20 nm; the nanocrystalline is uniformly distributed on amorphous base to keep the amorphous and crystallized phase in balance; the a mount of crystallization reaches 23% when the laser power is 300 W, the diameter of light spot is 20 mm, and the radiation speed is 20 mm/s. The phase balance can be controlled by adjusting the laser technology parameter. Laser radiation on the amorphous Fe73.5 Cu1Nb3Si13.5B9 alloy is an important technique for surface nanocrystallization of the amorphous alloys.
基金Graduate Innovation Project of Shanxi Normal University,Scientific and Technologial Innovation Programs of Higher Education Institutions in Shanxi(No.2019L0469)Education Science Planning of Shanxi Province Special Projects of Military Training for Students and National Defense Education for Universities(No.GGF 19002)Cultivation Plan of Young Scientific Researchers in High Education Institutions of Shanxi Province
