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Chinese Chemical Letters 2006年第7期17卷 925-928页

作者： Xiang Dong XU yong Gang HU ze Yu yang Institute of Environmental Science ＆ Engineering Huazhong University of Science and Technology Wuhan 430074 Department of Chemistry Huazhong University of Science and Technology Wuhan 430074

A capillary electrophoresis（CE） with on-line inhibited chemiluminescence （CL） detection was firstly used for the simultaneous analysis of benzenediol isomers and phenol. It is based on the quenching effect of benzenediol isomers and phenol on the chemiluminescence reaction of luminol with potassium ferricyanide in sodium hydroxide medium. Under the optimum conditions, the four phenols were baseline separated and detected in less than 10 rain. The detection limits （S/N=3） for hydroquinone, resorcinol, catechol and phenol were 2.9×10^-8 mol/L, 3.7×10^-7 mol/L, 8.4×10^-8 mol/L and 4.4×10^-6 mol/L, respectively. Finally, the presented method has been successfully applied to real sample.

关键词： Capillary electrophoresis chemiluminescence phenol benzenediol isomers wastewater.

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Distribution optimization of circulating water in air-cooled heat exchangers for a typical indirect dry cooling system on the basis of entransy dissipation

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Science China(Technological Sciences) 2015年第4期58卷 617-629页

作者： SUN Jian YUAN Kai yang Li Jun CHEN Lin DU Xiao ze yang yong Ping Key Laboratory of Condition Monitoring and Control for Power Plant Equipments of Ministry of Education School of Energy Power and Mechanical Engineering North China Electric Power University

The flow and heat transfer of air-cooled heat exchangers play important roles in the performance of indirect dry cooling systems in power plants,so it is of benefit to the design and operation of a typical indirect dry cooling system to optimize the thermo-flow characteristics of air-cooled heat *** entransy dissipation method is applied to the performance optimization of air-cooled heat exchangers in this *** irreversible heat transfer processes in air-cooled heat exchangers,the heat transfer between circulating water and cooling air and the mixing of circulating water,are taken into account and analyzed by means of the entransy dissipation *** total entransy dissipation rate,which connects the geometrical parameters of air-cooled heat exchanger sectors and the heat capacity rates of the fluids to the heat flow rate in every sector,is *** on the mathematical relation and the conditional extremum method,an optimization equation group is derived,by which the air-cooled heat exchanger with known air-side parameters is optimized,showing that the entransy dissipation based optimization approach can contribute to the distribution optimization of circulating water in air-cooled heat exchangers of a typical indirect dry cooling system.

关键词： indirect dry cooling system air-cooled heat exchanger entransy dissipation optimization

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Metal nanoparticles decorated CoFe-(oxy)hydroxysulfides nanosheets fabricated by a general strategy for electrocatalytic water splitting

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Journal of Energy Chemistry 2025年第1期100卷 26-38页

作者： Xiaodong yang Haochen Shen Xiaoming Xiao Zhichao Li Qi Zhou Wei yang Bin Jiang yongli Sun Luhong Zhang Zhenhua Yan School of Chemical Engineering and Technology Tianjin University Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University

This study presents a novel method to fabricate metal-decorated,sulfur-doped layered double hydroxides （M/SLDH） through spontaneous redox and sulfurization *** developed Ag/SLDH and Pt/SLDH catalysts with abundant heterogeneous interfaces and hierarchical nanostructures demonstrated outstanding oxygen evolution reaction （OER） and hydrogen evolution reaction （HER） performance,achieving low overpotentials of 212 and 35 mV at 10 mA cm-2in 1 M KOH,*** both anode and cathode in water splitting,they required only 1.47 V to reach 10 mA cm-2and exhibited high structural robustness,maintaining stability at 1000 mA cm-2for 300 ***-situ Raman analysis revealed that the synergistic effects of metal nanoparticles and S doping significantly promote the transformation into the S-Co1-xFexOOH layer,which serves as the active phase for water ***,ultraviolet photoelectron spectroscopy （UPS） and density functional theory （DFT） analyses indicated that incorporating metal nanoparticles and S doping increase electron density near the Fermi level and reduce reaction energy barriers,thus enhancing intrinsic OER and HER *** study provides a scalable strategy for synthesizing high-performance electrocatalysts for water splitting,with promising potential for broader applications.

关键词： LDH Spontaneous reaction Metal nanoparticles Water splitting

Surface study of the reconstructed anatase TiO2（001） surface

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Progress in Natural Science:Materials International 2021年第1期31卷 1-13页

作者： Guanxing Li Ke Fang yang Ou Wentao Yuan Hangsheng yang ze Zhang yong Wang Center of Electron Microscopy and State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University

The anatase TiO2（001） surface has attracted extensive attention in surface science and for practical applications because of its excellent performance. However, the highly reactive（001） surface usually reconstructs to a（1 ×4）-（001） surface, which may potentially alter its properties. As a result, there are still controversial issues concerning the intrinsic performance of this surface. Recently, significant advances have been made in the surface science study of TiO2（001）, which have elucidated its intrinsic physical and chemical properties. In this review,we summarize our present understanding of the structure and properties of the reconstructed TiO2（001） ***, we provide a brief background of the anatase TiO2surfaces, including its low-index surface structures and the synthesis of anatase TiO2nanocrystals with the（001） surface exposed. Next, we focus on the structure,formation mechanism, stability, and surface chemistry of the reconstructed TiO2（001） surface. Finally, we finish this review by highlighting the current challenges of this subject and providing future research perspectives.

关键词： Anatase TiO 2 Surface science TiO 2 (001) surface Surface reconstruction TiO 2 (1×4)-(001) surface

Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

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Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying Mo Biao Zheng Miaomiao Han Qin Zhong Wenwen yang Peng Gao Lezhi yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

Size-dependent solid-solid phase transition process of Ag2S nanoparticles

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Progress in Natural Science:Materials International 2019年第4期29卷 397-401页

作者： Jun Liu Lu Chen Hangsheng yang ze Zhang yong Wang State Key Laboratory of Silicon Materials and Center of Electron Microscopy School of Materials Science and Engineering Zhejiang University

It is well known that for a nanoparticle the solid-solid phase transition begins with the appearance of a high temperature disordered phase at the surface and the phase interface moves inward gradually with the increase of ***,the size-dependent phase transition behavior remains *** we report an in-situ TEM study of the phase transition process of different-sized Ag2S nanoparticles at atomic *** onset temperature of disordered phase of the small nanoparticle is found to be lower than that of the big ***,the disordered phase thickness of small nanoparticle is always thicker than that of big *** considering surface and interface free-energy,a phenomenological model based on the minimization of system free-energy is established,which could well explain our experimental *** discoveries extend our understanding of size dependent phase transition mechanism.

关键词： Solid-solid phase transition Nanoparticles In-situ transmission electron microscopy Ag2S

Improved Task and Resource Partitioning Under the Resource-Oriented Partitioned Scheduling

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Journal of Computer Science & Technology 2019年第4期34卷 839-853页

作者： ze-Wei Chen Hang Lei Mao-Lin yang yong Liao Jia-Li Yu School of Information and Software Engineering University of Electronic Science and Technology of China Chengdu 610054China School of Mathematical Sciences University of Electronic Science and Technology of ChinaChengdu 610054China

Coordinated partitioning and resource sharing have attracted considerable research interest in the field of real-time multiprocessor ***,finding an optimal partition is widely known as NP-hard,even for independent tasks.A recently proposed resource-oriented partitioned(ROP)fixed-priority scheduling that partitions tasks and shared resources respectively has been shown to achieve a non-trivial speedup factor guarantee,which promotes the research of coordinated scheduling to a new *** the theoretical elegance,the schedulability performance of ROP scheduling is restricted by the heuristic partitioning methods used in the original *** this paper,we address the partitioning problem for tasks and shared resources under the ROP scheduling.A unified schedulability analysis framework for the ROP scheduling is proposed in the first place.A sophisticated partitioning approach based on integer linear programming(ILP)is then proposed based on the unified *** results show that the proposed methods improve the schedulability of ROP scheduling significantly,and the runtime complexity for searching a solution is reduced prominently compared with other ILP-based approaches as well.

关键词： multiprocessor real-time scheduling partitioned fixed-priority scheduling shared resource integer linear pro-gramming

FSI simulation of dynamics of fish passing through a tubular turbine based on the immersed boundary-lattice Boltzmann coupling scheme

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Journal of Hydrodynamics 2022年第1期34卷 135-147页

作者： ze-hao Huang yong-guang Cheng Jia-yang Wu Wei Diao Wen-xin Huai State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan430072China Changjiang Institute of Survey PlanningDesign and ResearchWuhan430010China School of River and Ocean Engineering Chongqing Jiaotong UniversityChongqing400016China

The anadromous fish can pass through turbines of run-of-the-river hydropower stations to reach the downstream watershed, but their mortality is significant because of the complex turbine structure, the fast-rotating runner, and the special flow patterns. Numerical simulations of the dynamics of fish passing are a challenging task, because the fish motion in the turbines involves a strong fluid-structure interaction (FSI). In this paper, the 3-D immersed boundary-lattice Boltzmann (IB-LB) coupling scheme is proposed to treat the FSI between the water and the fish. The process of one fish and three fish passing through a tubular turbine is simulated on a graphics processing unit (GPU) platform. The fish motion postures (translation and rotation), the fish body pressure distributions and histories are analyzed, and the results are consistent with the previous studies. This paper presents the IB-LB models, the simulation procedures, the specific treatments, and related results, to demonstrate the effectiveness of the IB-LB coupling scheme in simulating FSI problems and its application prospects in developing fish-friendly turbines.

关键词： Fluid-structure interaction(FSI) immersed boundary method lattice Boltzmann method tubular turbine fish passing dynamics 3-D simulation

Microstructural evolution during the progressive transformation-induced plasticity effect in a Fe-0.1C-5Mnmedium manganese steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 369-379页

作者： Mei Zhang Wenhao Li yangfei Chen yang Jiang Xiaofei Guo Han Dong School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of Advanced Special Steel Shanghai UniversityShanghai 200444China

The microstructural evolution of a cold-rolled and intercritical annealed medium-Mn steel(Fe-0.10C-5Mn)was investigated during uniaxial tensile ***-situ observations under scanning electron microscopy,transmission electron microscopy,and X-ray diffraction analysis were conducted to characterize the progressive transformation-induced plasticity process and associated fracture initiation *** findings were discussed with the local strain measurements via digital image *** results indicated that Lüders band formation in the steel was limited to 1.5%strain,which was mainly due to the early-stage martensitic phase transformation of a very small amount of the less stable large-sized retained austenite(RA),which led to localized stress concentrations and strain hardening and further retardation of *** small-sized RA exhibited high stability and progressively transformed into martensite and contributed to a stably extended Portevin-Le Chatelier *** volume fraction of RA gradually decreased from 26.8%to 8.2%prior to *** the late deformation stage,fracture initiation primarily occurred at the austenite/martensite and ferrite/martensite interfaces and the ferrite phase.

关键词： medium-Mn steel retained austenite progressive transformation-induced plasticity effect local strain fracture initiation

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Ammonia pyrolysis oxidation excited by nanosecond pulsed discharge:Global/fluid models hybrid solution

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Journal of Energy Chemistry 2025年第1期100卷 385-396页

作者： Mingming Zhang Hanyu Wu Qi Chen Jiaxin yang Bonan Liu School of Mechanical Electronic and Control Engineering Beijing Jiaotong University China University of Petroleum

The kinetic characteristics of plasma-assisted oxidative pyrolysis of ammonia are studied by using the global/fluid models hybrid solution ***,the stable products of plasma-assisted oxidative pyrolysis of ammonia are *** results show that the consumption of NH3/O2and the production of N2/H2change linearly with the increase of voltage,which indicates the decoupling of nonequilibrium molecular excitation and oxidative pyrolysis of ammonia at low ***,the detailed reaction kinetics mechanism of ammonia oxidative pyrolysis stimulated by a nanosecond pulse voltage at low pressure and room temperature is *** on the reaction path analysis,the simplified mechanism is *** detailed and simplified mechanism simulation results are compared with experimental data to verify the accuracy of the simplified ***,based on the simplified mechanism,the fluid model of ammonia oxidative pyrolysis stimulated by the nanosecond pulse plasma is established to study the pre-sheath/sheath behavior and the resultant consumption and formation of key *** results show that the generation,development,and propagation of the pre-sheath have a great influence on the formation and consumption of *** consumption of NH3by the cathode pre-sheath is greater than that by the anode pre-sheath,but the opposite is true for OH and O（1S）.However,within the sheath,almost all reactions do not ***,by changing the parameters of nanosecond pulse power supply voltage,it is found that the electron number density,electron current density,and applied peak voltages are not the direct reasons for the structural changes of the sheath and ***,the discharge interval has little effect on the sheath structure and gas mixture *** research results of this paper not only help to understand the kinetic promotion of non-equilibrium excitation in the process of oxidative pyrolysis but also help to explore th

关键词： Nanosecond pulsed discharge Ammonia Oxidative pyrolysis Fluid model Global model