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Laboratory Investigation of Zinc Recovery fromEAF Dust by Bath Smelting Reduction

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International Journal of Minerals,Metallurgy and Materials 2000年第1期14卷 18-23页

作者： Weiqing Chen Tarek El Gammal Metallurgy School, university of Science & Technology Beijing, Beijing 100083, China Institute for Ferrous Metallurgy, Aachen university of Technology, Germany Metallurgy School University of Science and Technology Beijing Beijing 100083 China Institute for Ferrous Metallurgy Aachen University of Technology Germany

Bath smelting reduction for recovering zinc from EAF (Electric Arc Furnace) dust has been investigated in the laboratory. A degree of zinc volatilization of more than 99% was obtained from the process. Temperature has a clear influence on the reduction rate of ZnO in slag. The reduction rate of (ZnO) by [C] is the first order with respect to the content of ZnO in the slag. The apparent activation energy of the (ZnO) reduction reaction is 312 kJ/mol at 1300-1500℃.

关键词： EAF dust ZnO smelting reduction reduction rate

COMPUTATION OF HOPF BRANCHES BIFURCATING FROM A HOPF/PITCHFORK POINT FOR PROBLEMS WITH Z_2-SYMMETRY

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Journal of Computational Mathematics 1998年第5期16卷 403-416页

作者： Bai－sheng Wu (Department of Mathematics,Jilin university, Changchun 130023, China)Tassilo Kupper (Institute of Mathematics, university of Cologne, D-50931 Koln, Germany) 吉林大学数学系吉林长春 Univeristy of Cologne 德国

This paper is concerned with the computation of Hopf branches emanating from a Hopf/Pitchfork point in a two-parametor nonlinear problem satisfying a Z2symnletry condition. Our aim is to present a new al,proach to the theoretical and computational analysis of the bifurcating Hopf branches at this singular point by using the system designed to calculate Hopf points and exploring its symmetry. It is shown that a Hopf/Pitchfork point is a pitchfork bifurcation point in the *** standard continuation and branch-switching can be used to compute these Hopf branches. In addition, an effect method based on the extended system of the singular points is developed for the computation of branch of secondary (nonsymmetric) Hopf points. The implementation of Newton's method for solving the extended system is also discussed. A numerical example is ***: Hopf/Pitchfork point, Z2-symmetry, Hopf point, bifurcation, Extended system

关键词： Hopf/pitchfork point Z_2-symmetry Hopf point bifurcation Extended system

STATISTICAL PREDICTION OF SEDIMENT TRANSPORT

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China Ocean Engineering 1987年第2期1卷 91-93页

作者： Liu Defu(Tianjin university, Tianjin) Tianjin Univ Tianjin China Tianjin Univ Tianjin China

Based on the longshore sediment transport calculated by Bijker formula, this paper discusses the long-term distribution of sediment transport and presents formulae to statistically predict probable and most disadvantageous total quantity of sediment transport in multiple years blocked by a littoral barrier. These formulae are useful for planning and designing various types of coastal structures.

关键词： STATISTICAL PREDICTION OF SEDIMENT TRANSPORT

Comment on “Chen et al., Fabrication and photovoltaic conversion enhancement...”,Electrochimica Acta,2014

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Journal of Semiconductors 2015年第9期36卷 97-98页

作者： Lara Valentic Nima E.Gorji Department of Environment Sciences,university of Nova Gorica Department of Physics,Brown university Department of Environment Sciences University of Nova Gorica Nova Gorica 5000 Slovenia Department of Physics Brown University Providence 02912 Rhode Island USA

In a recent article, Chen et aL [Electrochimica Acta, 2014, 130： 279] presented their fabrication and characterization results on a graphene/n-Si solar cell where the Au nanoparticles were inserted in graphene to increase its optical and electrical properties. The higher efficiency of the device was attributed to increased conductivity of graphene after doping with Au nanoparticles. However, the knowledge in the field of Schottky diode solar cells relates this to increased band bending at the junction. Also, to explain the instability behaviour, they concluded that the growth of silicon oxide on the Si surface or oxygen adsorption on the window layer resulted in the device performance increasing initially and decreasing in the end. However, this instability seems to be due to variation in series resistance reduced at the beginning because of slightly lowered Fermi level and increased at the end by the self-compensation by deep in-diffusion ofAu nanoparticles into n-Si layer. We also propose that inserting a very thin p-type layer at the junction will enhance the carrier collection and performance of this device.

关键词： Shockley barrier solar cell graphene Si Au nanoparticle

Comparative characterization of Jatropha,soybean and commercial biodiesel

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燃料化学学报 2011年第4期39卷 258-264页

作者： Sylvain-Didier B.Kouame Department of Energy and Mineral Engineering Pennsylvania State UniversityUniversity-Park Department of Chemical Engineering Pennsylvania State UniversityUniversity-Park

Oil was extracted from seeds of Jatropha Curcas,in high yields(up to 40% by weight).The extracted Jatropha oil was converted in a laboratory reactor to biodiesel by *** of Jatropha oil and Jatropha biodiesel by GC/MS and GC/SIMDIS showed that Jatropha oil could be readily converted to a biodiesel product through NaOH catalyzed *** resulting biodiesel has desirable properties such as high cetane number and low flash point,which are major improvements over the properties of commercial biodiesel fuels.

关键词： Jatropha Curcas biodiesel transesterification 闪光点十六烷数字丰满的酸甲基酉旨(名声)

推进深港合作打造世界级“高教-科创-人才”枢纽的战略思考

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中国软科学 2024年第10期 1-9页

作者：武汉大学国家发展战略研究院课题组武汉大学国家发展战略研究院湖北武汉430072

深圳和香港地区是粤港澳大湾区建设国际科技创新中心和综合性国家科学中心的两个核心引擎,两地优势互补、珠联壁合。深港合作打造世界级“高教-科创-人才”枢纽,有利于建设全球科创高地,推动高质量发展。首先,要发挥香港“超级联系人”... 详细信息

深圳和香港地区是粤港澳大湾区建设国际科技创新中心和综合性国家科学中心的两个核心引擎,两地优势互补、珠联壁合。深港合作打造世界级“高教-科创-人才”枢纽,有利于建设全球科创高地,推动高质量发展。首先,要发挥香港“超级联系人”作用,依托香港优质高校资源,强化深港两地教育和人才的深度合作与高效协同,形成国际化人才吸附与培养的“磁场效应”,打造世界级优质“高等教育枢纽”;其次,要深化两地科技与金融合作,强化企业在促进深港协同创新中的重要作用,优化“深圳科创+香港创科”的成果转化衔接机制,打造“创投-创新-创业”铁三角,营造具有全球竞争力的创新创业生态和创富环境,形成“创新-创业-创富”的“金三角”;最后,要抓住河套科技创新合作区这个深港“强强联合”的关键着力点,形成“一核多极、多层联动”格局,促进制度型开放和规则衔接,把深港的“制度之异”变成“制度之利”,促进各类先进生产要素向发展新质生产力集聚。

关键词：深港合作高等教育创新人才科技金融产业创新河套深港科技创新合作区

On Holomorphic Automorphisms of a Class of Non-homogeneous Rigid Hypersurfaces in C^(N+1)

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Chinese Annals of Mathematics,Series B 2010年第2期31卷 201-210页

作者： Qingyan WU Department of Mathematics,Linyi Normal university,Linyi 276005,Shandong,China Department of Mathematics,Zhejiang university,Hangzhou 310027,China Department of Mathematics Linyi Normal University Linyi China Department of Mathematics Zhejiang University Hangzhou China

The author determines the real-analytic infinitesimal CR automorphisms of a class of non-homogeneous rigid hypersurfaces in CN+1 near the origin,and the connected component containing the identity transformation of al... 详细信息

关键词： Real-analytic infinitesimal CR automorphisms Rigid hypersurfaces Holomorphic automorphisms

T1 theorem for Besov and Triebel-Lizorkin spaces

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Science China Mathematics 2005年第5期48卷 657-665页

作者： DENG Donggao & HAN Yongsheng Department of Mathematics, Zhongshan university, Guangzhou 510275, China Department of Mathematics, Auburn university, Alabama, 36849, USA Dept. of Math. Zhongshan Univ. Guangzhou 510275 China Dept. of Math. Auburn Univ. Alabama 36849 United States

Using the discrete Calderon type reproducing formula and the PlancherelPolya characterization for the Besov and Triebel-Lizorkin spaces, the T1 theorem for the Besov and Triebel-Lizorkin spaces was proved.

关键词： T1 theorem Besov and Triebel-Lizorkin spaces Calderon reproducing formula Plancherel-Polya inequalities.

A UNIFIED TIME-MARCHING PROCEDURE FOR COMPRESSIBLE INCOMPRESSIBLE FLOWS

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Journal of Hydrodynamics 1995年第4期7卷 13-21页

作者： Charles L. Merkle Feng Jin-zhang(Propulsion Engineering Research, The Pennsylvania State university, university Park, PA 16802, USA) The Pennsylvania State Univ United States

A time derivative preconditioning is introduced that allows a unified treatment of timemarching methods for both compressible and incompressible flows from inviscid to creeping flow. Results show that convergence rates are independent of Reynolds numbers and Mach numbers throughout this regime. A Complete formulation'based on an arbitrary equation of state facilitates the changes from one type of fluid to another and, in particular, the extension to incompressible flows. The resulting time-marching algorithm is shown in the incompressible limit to be identical to iterative methods based on pressure-Poisson methods, and it is demonstrated that both method are hyperbolic.

关键词： computational fluid dynamics time-marching procedure flow