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A porous high-entropy alloy for high-efficient oxygen evolution reaction

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Rare Metals 2023年第7期42卷 2174-2181页

作者： Wei Wang yun-Zhuo lu Xing lu School of Materials Science and Engineering Dalian Jiaotong UniversityDalian116028China

Oxygen evolution reaction(OER)plays a crucial role in regulating the process of hydrogen production from water splitting where an expeditious,stable and low-cost electrocatalyst is urgently *** employing a facile strategy of selective phase dissolution,this dissertation attempts to illuminate the successful preparation of a porous AlCoCrFeNi high-entropy alloy(SPD-48 h).

关键词： alloy entropy evolution

Energy metabolism homeostasis in cardiovascular diseases

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Journal of Geriatric Cardiology 2021年第12期18卷 1044-1057页

作者： lu-yun WANG Chen CHEN Division of Cardiology Tongji HospitalTongji Medical College and Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiologic DisordersHuazhong University of Science and TechnologyWuhanChina

Cardiovascular disease(CVD)is the leading cause of morbidity and mortality in the general *** metabolism disturbance is one of the early abnormalities in CVDs,such as coronary heart disease,diabetic cardiomyopathy,and heart *** explore the role of myocardial energy homeostasis disturbance in CVDs,it is important to understand myocardial metabolism in the normal heart and their function in the complex pathophysiology of *** this article,we summarized lipid metabolism/lipotoxicity and glucose metabolism/insulin resistance in the heart,focused on the metabolic regulation during neonatal and ageing heart,proposed potential metabolic mechanisms for cardiac regeneration and *** provided an overview of emerging molecular network among cardiac proliferation,regeneration,and metabolic *** novel targets promise a new era for the treatment of CVDs.

关键词： metabolism homeostasis degeneration

Effect of activated carbon support on CS_2 removal over coupling catalysts

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Journal of Natural Gas Chemistry 2011年第4期20卷 397-402页

作者： Li Wang yun Guo Guanzhong lu Lab for Advanced Materials Research Institute of Industrial Catalysis East China University of Science ＆ Technology Shanghai 200237 China

Supported coupling catalysts for CS2 removal were prepared with different activated carbons originated from wood,coconut shell and coal as supports,and their catalytic activities for CS2 removal were tested at ambient *** textural and surface properties of the activated carbons were characterized by nitrogen adsorption,temperature-programmed desorption（TPD）and Boehm *** activated carbon support with meso-and macropores,and oxygen-functional groups performs higher CS2 removal ability at ambient *** effects of flow rate,CS2 inlet concentration,temperature and relative humidity on CS2 removal were also *** efficient removal is obtained at temperature of 50-C,space velocity of 2000 h-1,inlet CS2 concentration of 500 mgS/m3 and relative humidity of 20%with the breakthrough sulfur capacity up to 4.3 gS/gCat and working sulfur capacity up to 7 gS/gCat.

关键词： carbon disulfide coupling removal activated carbon ambient temperature

Crisis of Transient Chaos

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Chinese Physics Letters 2002年第7期19卷 901-903页

作者： Wang Wen-Xiu, lu yun-Qing Department of Physics and Complexity Science Center Yangzhou University

A new kind of crisis, which is marked by a sudden change of a strange repeller, is observed in an electronic relaxation oscillator. Firstly, by its simplified piecewise linear model, we show analytically that a strange repeller appears after a hole-induced crisis, and that the fractal dimension of the strange repeller and the average lifetime of the iterations in the region occupied by the original attractor suddenly change at the critical parameter value when the repeller disappears. Our numerical investigation convinces us that the corresponding phenomenon can be found in the original electronic relaxation oscillator.

关键词： Fractal dimension

Multi-objective process parameter optimization for energy saving in injection molding process

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第5期13卷 382-394页

作者： Ning-yun lu Gui-xia GONG Yi YANG Jian-hua lu College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China Department of Control Engineering and Science Zhejiang University Hangzhou 310027 China School of Computer Science and Engineering Southeast University Nanjing 210096 China

This paper deals with a multi-objective parameter optimization framework for energy saving in injection molding *** combines an experimental design by Taguchi's method,a process analysis by analysis of variance(ANOVA),a process modeling algorithm by artificial neural network(ANN),and a multi-objective parameter optimization algorithm by genetic algorithm(GA)-based lexicographic *** and global Pareto analyses show the trade-off between product quality and energy *** implementation of the proposed framework can reduce the energy consumption significantly in laboratory scale tests,and at the same time,the product quality can meet the pre-determined requirements.

关键词： Injection molding process Energy saving Multi-objective optimization Genetic algorithm Lexicographic method

Solvothermal Synthesis, Structural Characterization and Properties of Two New Layered Lanthanide Sulfates

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Chemical Research in Chinese Universities 2013年第5期29卷 831-836页

作者： lu yun ZHANG Deng XU Yan State Key Laboratory of Materials-oriented Chemical Engineering College of Chemistry and Chemical Engineering Nanjing University of Technology Nanjing 210009 P. R. China

Two new layered lanthanide sulfates, [C10H10N2][Pr2（SO4）4（H2O）2]（1） and [H5O2][Sm（SO4）2（H2O）3]（2） were synthesized via solvothermal reaction and structurally characterized by single-crystal X-ray diffraction（XRD）, infrared（IR） spectroscopy, thermal analysis, fluorescent spectra and inductively coupled plasma（ICP）. Crystal data for compound 1, triclinic, Pi space group, a=0.8052（4） nm, b=0.9438（4） nm, c=1.4990（7） nm, α=79.450（5）°, β= 83.703（5）°, γ=74.048（5）°, V=1.0746（9） nm3, Z=2; for compound 2, monoclinie, P21/c space group, a=0.6599（11） nm, b=1.8940（3） nm, c=0.8765（14） nm, β=96.596（2）°, V=1.0883（3） nm3, Z=4. Structure analysis indicates that both the compounds exhibit a 2D corrugated layer structure, with protonated 4,4＇-bipyridine cations and water dimmers （H5O2）＋ located between the inorganic layers of compounds pounds 1 and 2 were further investigated. 1 and 2, respectively. luminescent properties of com-

关键词： Solvothermal synthesis Open-framework Lanthanide sulfate Layered structure luminescence

Phase transformation and thermal analysis during combustion synthesis of Mg_(17)Al_(12) alloy

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Rare Metals 2014年第1期33卷 37-40页

作者： Yu-Li Zhou yun lu yun-Feng Zhu Li-Quan Li College of Materials Science and Engineering Nanjing University of Technology

The Mg-A1 hydrogen storage alloy was suc- cessfully prepared by combustion synthesis （CS） method. The formation of alloy phases during the CS process was studied using X-ray diffraction （XRD）, scanning electron microscope （SEM）, and differential scanning calorimetry （DSC）. When the time increases from 0, 0.5, 1.0 to 2.0 h at 733 K, the products are Mg and A1; Mg2A13, Mg and A1; Mgl7All2, Mg2A13; and Mg; and eventually only MgI7A112, respectively. Combined with three peaks in the DSC traces, it is concluded that the formation of MglyAll2 during the CS includes three processes, namely, the formation of MgzA13 first; then the unsaturated solid solution, MglvAla2; and finally the complete MglvA112 alloy. The formation of MgzA13 prior to MglvA112 in this work is different from those prepared by mechanical alloying. This is thought to be related to the instant high temperature during the ther- mal explosion of CS.

关键词： Mg-A1 alloy Combustion synthesis Phasetransformation Thermal analysis

A numerical study of fluid injection and mixing under near-critical conditions

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Acta Mechanica Sinica 2012年第3期28卷 559-571页

作者： Hua-Guang Li Xi-yun lu Vigor Yang Department of Modern Mechanics University of Science and Technology of China230026 HefeiChina School of Aerospace Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Nitrogen injection under conditions close vicinity of the liquid-gas critical point is studied numerically. The fluid thermodynamic and transport properties vary drasti- cally and exhibit anomalies in the near-critical regime. These anomalies can cause distinctive effects on heat-transfer and fluid-flow characteristics. To focus on the influence of ther- modynamics on the flow field, a relatively low injection Reynolds number of 1 750 is adopted. For comparisons, a reference case with the same configuration and Reynolds number is simulated in the ideal gas regime. The model accommodates full conservation laws, real-fluid thermody- namic and transport phenomena. Results reveal that the flow features of the near-critical fluid jet are significantly differ- ent from their counterpart. The near-critical fluid jet spreads faster and mixes more efficiently with the ambient fluid along with a more rapidly development of the vortex pairing pro- cess. Detailed analysis at different streamwise locations in- cluding both the flat shear-layer region and fully developed vortex region reveals the important effect of volume dilata- tion and baroclinic torque in the near-critical fluid case. The former disturbs the shear layer and makes it more unstable. The volume dilatation and baroclinic effects strengthen the vorticity and stimulate the vortex rolling up and pairing pro- cess

关键词： Liquid-gas critical point Real-fluid Fluid in-jection Shear layer instability Vortical dynamics

Spike protein homology between the SARS-associated virus and murine hepatitis virus implies existence of a putative receptor-binding region

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Chinese Science Bulletin 2003年第11期48卷 1115-1117页

作者： lu yun CHEN Yinghua Laboratory of Immunology Department of BiologyProtein Science Laboratory of Ministry of Education Tsinghua University Beijing 100084 China

Coronavirus has been determined to be the cause of the recent outbreak of severe acute respiratory syndrome (SARS). Human coronavirus 229E had been studied well and its receptor-binding domain was restricted to aa417—547 of S protein. However, this region has no homology with the newly separated SARS-associated virus (Hong Kong isolate CUHK-W1). Then we analyzed the phylogenesis of S1 subunit of the coronavirus spike protein (SARS-associated virus, Hong Kong isolate CUHK-W1). Interestingly, the highest homology between murine hepatitis virus (MHV) and SARS-associated coronavirus was found. And the important sites (aa62—65 and aa214—216) on the spike protein of MHV with receptor-binding capacity were highly conservative in comparison with the newly separated SARS-asso- ciated virus (the corresponding sites are aa51—54 and aa195—197). These results from bioinformatics analysis might help us to study the receptor-binding sites of SARS-associ- ated virus and the mechanism of the virus entry into the target cell, and design antiviral drugs and potent vaccines.

关键词：非典型性肺炎冠状病毒鼠类肝炎病毒 SARS 蛋白质抗过滤性病源体药物疫苗异体同形