MMEAT2016 was successfully taken place on May 28-29, 2016 in Zhuhai, China!【Photo】

日期:05/30/2016 点击量:  898次



Keynote Speakers




Prof. Dongfang Yang, Guizhou Minzu University, China


Title: Seasonal variations of Pb sources in Jiaozhou Bay during 1979-1983

Speech Abstract: Based on investigation data on Pb in surface waters in Jiaozhou Bay in Jiaozhou Bay in September 1980, April 1981, June 1982, and October 1983, we analyzed the horizontal distributions of Pb contents in different seasons, and revealed the major Pb sources. Results showed that the horizontal distributions of Pb were showing significant seasonal variations. Stream flow, overland runoff, atmosphere deposition, marine current and the top of the island were the major Pb sources in spring; stream flow and marine current were the major Pb sources in summer; stream flow, marine current and docks were the major Pb sources in autumn. Source treatment is one of the basic approach to control Pb pollution, and relevant countermeasures should be took for different pollution sources.





Prof. Jinxia Wang, Ningbo University of Technology, Ningbo,PR China



Title: Structure, thermal expansion and transport properties of BaCe1−xEuxO3−δ oxides
Speech Abstract: Perovskite oxides BaCe1−xEuxO3−δ  (x = 0.05, 0.10, 0.15, and 0.20) were prepared using starting ratios of Ba/(Ce + Eu) = 1.0 and 1.1. X-ray diffraction analysis shows that preparations with a slight initial barium excess crystallized as a single perovskite phase, while the stoichiometric preparations crystallized with a trace of CeO2  due to Ba loss. EPR measurements indicate that the samples have no Ba vacancies and that Eu and Ce ions are in trivalent and tetravalent states, respectively. The single-phase samples synthesized from Ba/(Ce + Eu) = 1.1 preparations are shown to have different cell volume trends versus x, lower average thermal  expansion coefficients, and higher proton conductivities in water-containing atmospheres between 80 and 700 ◦C, compared to samples synthesized from the Ba/(Ce + Eu) = 1.0 preparations. These observations are explained in terms of the impurity CeO2 phase, Eu doping-site preferences, and oxygen vacancy generation.


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