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Quantitative Analysis for Risk Management in Flue Gas Desulfurization Engineering
Liu Ruiyu,Chen Liankai,Xu Li,Yang Hongping 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.10
In China, the Flue Gas Desulfurization (FGD) system gradually becomes a necessary facility in coal-fired power plants for pollution reduction. The evaluation model of investment risk in FGD project was established in this paper. By researching on the probability distribution of uncertain risk variables impacting investment income, the distribution function as well as the eigenvalue of net present value was solved, and the investment risk in the Build-Operate-Transfer project of FGD engineering was analyzed quantificationally based on the method of Monte Carlo simulation. The result showed that there was relatively high risk in FGD project, and then some measures were proposed to reduce the investment risk.
Fabrication of CeO2@MnO2 Core–Shell Nanospheres and Their Application in CO Oxidation
Ling Liu,Jingjing Shi,Hong-Xia Cao,Ruiyu Wang 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.3
Rational design and fabrication of heterogeneous core–shell nanostructures is of great significance because their two-phase interface could render hybrid junctions with rich redox reactions, which are beneficial for improving catalytic performance. Herein, hierarchical CeO2 yolk-shell nanospheres@MnO2 nanosheets core–shell nanostructures were fabricated by a multistep wet chemical synthetic strategy. The resulting CeO2@MnO2 core–shell nanospheres exhibited high catalytic activity toward CO oxidation in comparison with pure CeO2 and MnO2 structures and their physical and chemical mixture. The enhanced catalytic performance should be attributed to the formation of core–shell structure and the possible synergistic effects between the two components of MnO2 and CeO2, which facilitates materials with promoted redox properties and enhanced oxidation activity. In addition, this synthetic method is expected to extend to fabricate other multi-composite core–shell structures for a broad range of technical applications.
Study on the pattern of integrated risk management in project contracting and early-warning system
Wan Li,Liu Ruiyu 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.10
According to the theory and practical development of risk management and together with the characters in project contracting, this paper presents the integrated risk that probably appears in project contracting, and introduces the functions and frameworks of the integrated risk management early-warning system. In this paper, we establish the indicator systems of the integrated risk management early-warning system in project contracting with the methods of correlation analysis and principal components analysis, and study in information management system of the integrated risk management early-warning system in project contracting. All measures so as to put forward some being on guard of project risk managing.