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Dependence of the emission electric dipole line strength of Eu~(3+) on the composition of lead borate glasses DUAN Changkui1,JIANG Sha1,LIU Ziyi1,JIA Guohua2 (1.College of Mathematics and Physics... xB_2O_3+(99-x)PbO+0.5Eu_2O_3(x=70, 60…,10) were prepared by melt-quenching method. The luminescent properties were characterized with excitation and emission spectra. The emission intensities......
on location accuracy of acoustic emission source was discussed in this work. 2 Measurement and analysis of sonic speeds for samples The ultrasonic test of rock was widely applied to the field of rock... Effects of sonic speed ??on location accuracy of acoustic emission source in rocks LI Qi-yue, DONG Long-jun, LI Xi-bing, YIN Zhi-qiang, LIU Xi-ling School of Resources and Safety Engineering......
J. Cent. South Univ. Technol. (2010) 17: 1119-1124 DOI: 10.1007/s11771-010-0605-2 Effect of heterogeneity on mechanical and acoustic emission characteristics of rock specimen LI Shu-cai(李术才... Abstract: The influence of heterogeneity on mechanical and acoustic emission characteristics of rock specimen under uniaxial compress was studied with numerical simulation methods. Weibull distribution......
J. Cent. South Univ. Technol. (2009) 16: 0444-0450 DOI: 10.1007/s11771-009-0075-6 Feasibility analysis for monitoring fatigue crack in hydraulic turbine blades using acoustic emission technique... in turbine blades using acoustic emission (AE) technique, the AE characteristics of fatigue crack growth were studied in the laboratory. And the characteristics were compared with those of background noise......
, particularly, triplet–triplet transfer in these lanthanide complexes. One of the most important problems in this field is a selection of suitable ligands, which would provide high efficiency of emission... Synthesis and emission analysis of novel rare earth complex Eu(TTA)3(2NH2-Phen) L? Yu-guang(吕玉光)1,2, LI Gang(李 刚)1, SHI Chun-hui(石春卉)3, YU Lian-sheng(于连生)1, LUAN Fang(栾 芳)1, ZHANG Fu-jun(张福俊)4 1......
J. Cent. South Univ. (2016) 23: 2305-2313 DOI: 10.1007/s11771-016-3288-5 Forward modeling for "earth-ionosphere" mode electromagnetic field LI Di-quan(李帝铨)1, 2, XIE Wei(谢维)1, 2, DI Qing-yun(底青云)3... Berlin Heidelberg 2016 Abstract: A fixed artificial source (greater than 200 kW) was used and the source location was selected at a high resistivity region to ensure high emission efficiency. Some......
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J. Cent. South Univ. (2020) 27: 2883-2898 DOI: https://doi.org/10.1007/s11771-020-4516-6 Acoustic emission precursors of static and dynamic instability for coarse-grained hard rock SU Guo-shao(苏国韶... University, Nanning 530004, China Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Abstract: To investigate the acoustic emission (AE) precursors of coarse-grained......
tested by laser diffractrometry, light transmission, field emission scanning electron microscopy and Brunauer-Emmett-Teller(BET). The results that, the powder sintered directly are agglomerated greatly... drying; light transmission method; field emission SEM; ultra-fine powder 微细粉氧化锆具有高活性, 是一种良好的催化剂, 在石油化工, 电子陶瓷和陶瓷釉料方面具有重要的用途. 氧化锆粒度的不均匀, 粗细差异大, 颗粒团聚严重等都将影响催化的效果. 制备微细氧化锆粉末的方法很多, 包括气相反应[1],水热分解[2, 3], 化学沉积......
J. Cent. South Univ. Technol. (2011) 18: 411-419 DOI: 10.1007/s11771-011-0712-8 Experimental and numerical study of fence effects on dust emission into atmosphere from open storage piles S... against particulated material emission to the atmosphere from open storage piles, are presented. This research was carried out through computational fluid dynamics (CFD) simulation by software Ansys......
