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Science China(Technological Sciences) 2014年第2期57卷 259-263页

作者： NING Jing HAO Long zhang xianfeng LIANG MingHui ZHI LinJie National Center for Nanoscience and Technology University of Chinese Academy of Sciences School of Materials Science and Engineering University of Shanghai for Science and Technology

High-quality graphene coating was directly grown on stainless steel meshes via chemical vapor deposition process,during which the morphology of the stainless steel was transformed *** the graphene-coated stainless steel meshes were applied as current collectors of supercapacitors,the changes of the appearance and the graphene coating improved the contact between stainless steel meshes and the active materials,thus benefiting the performance of the ***,this simple method can be used to prepare the enhanced current collectors for other energy storage devices.

关键词： graphene current collector supercapacitor chemical vapor deposition (CVD)

Optimal Virtual Battery Model for Aggregating Storage-Like Resources with Network Constraints

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1843-1847页

作者： Zhenfei Tan Ao Yu Haiwang Zhong xianfeng zhang Qing Xia Chongqing Kang Department of Electrical Engineering and Sichuan Energy Internet Research Institute Tsinghua UniversityBeijing 100084China Science and Technology Institute of China Three Gorges Corporation Hubei 430010China

A virtual battery(VB)provides a succinct interface for aggregating distributed storage-like resources(SLR)to interact with a utility-level *** overcome the drawbacks of existing VB models,including conservatism and neglecting network constraints,this paper optimizes the power and energy parameters of VB to enlarge its flexibility *** optimal VB is identified by a robust optimization problem with decision-dependent *** algorithm based on the Benders decomposition is developed to solve this *** proposed method yields the largest VB satisfying constraints of both network and *** studies verify the superiority of the optimal VB in terms of security guarantee and less conservatism.

关键词： Aggregation decision-dependent uncertainty flexibility robust optimization virtual battery

Continuum-based slip model and its validity for micro-channel flows

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Chinese Science Bulletin 2006年第9期51卷 1130-1137页

作者： zhang Genxuan LIU Minghou zhang xianfeng YE Taohong CHEN Yiliang WANG Lu Thermal Science & Energy Engineering Department University of Science & Technology of China Hefei 230027 China The 38th Research Institute of CETC Hefei 230031 China

In this paper, the low Mach number he- lium and nitrogen flows in micro-channels are inves- tigated numerically with variations of inlet to outlet pressure ratios, aspect ratios, out pressures and fluid mediums by using different continuum-based slip models. Theoretical solutions based on perturbation expansions of the Navier-Stokes equations have been developed under different order slip conditions. The validity of slip models has been examined by the corresponding experiments and the DSMC method at different Knudsen numbers. Simulations have shown good predictions of the compressibility, rarefaction and thermal creep effects on micro-channel flows with the present slip models. The higher order slip models relatively decrease the rarefaction effects comparing with a first-order slip model. Both of the Knudsen number and the Reynolds number have been identified as key parameters, which govern the rarefaction effects and thermal creep effects, respec- tively. The present slip models have been also dem- onstrated to be appropriate for micro-channel nitro- gen flows with the Knudsen number less than 0.15, and the higher order slip conditions improve the Na- vier-Stokes predictions in the slip flow regime with Kn<0.08. However, the continuum-based slip models significantly under-predict the rarefaction effects in the transitional flow regime as the Knudsen number exceeds 0.2.

关键词：微通道滑移模型扰动分析稀疏效应克努森数

Influence of impact energy on work hardening ability of austenitic manganese steel and its mechanism

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China Foundry 2012年第3期9卷 248-251页

作者： Li Xiaoyun Wu Wei Zu Fangqiu Liu Lanjun zhang xianfeng Engineering Training Center Hefei University of Technology Hefei 230601 China School of Materials Science and Engineering Hefei University of Technology Hefei 230009 China

To further understand the hardening mechanism of austenitic manganese steel under actual working conditions, the work hardening ability was studied and the microstructures of austenitic manganese steel were observed under different impact energies. The work hardening mechanism was also analyzed. The results show that the best strain hardening effect could be received only when the impact energy reaches or exceeds the critical impact energy. The microstructural observations reveal that dislocations, stacking faults and twins increase with raising impact energy of the tested specimens. The hardening mechanism changes at different hardening degrees. It is mainly dislocation and slip hardening below the critical impact energy, but it changes to the twinning hardening mechanism when the impact energy is above the critical impact energy.

关键词： austenitic manganese steel work hardening impact energy microstructure hardening mechanism

An Analysis of the Benfit on Green Risk in Construction Projects

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Journal of Environmental Protection 2010年第3期1卷 324-329页

作者： xianfeng zhang Chuanmin Shuai 不详

The Construction project green risks (CPGRs) refer to those threats to environment, energy sources and material re-sources during the entire life-cycle of a construction project. The emergent green risks in exploiting these resources are of varying concern to all. In this paper, evolutionary game is introduced to make about impacts of strategy choices from interactions among the choices developers, and between the choices developers and EPDs on project green risk. The results show that CPGRs will occur if either developers find that not managing CPGRs has a better payoff than opting for CPGR management, or if monitors impose only mild fines even when they find CPGRs within construction projects of developer’s firms. The study also shows that there is a prohibitively expensive cost incurred by EPDs in monitoring CPGRs. Finally, some strategies are given for EPDs to help them make policies to regulate the strategies of developers.

关键词： Construction Project Management Green Risk Evolutionaryary Game Strategy Developer

High stearic acid diet modulates gut microbiota and aggravates acute graft-versus-host disease

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Signal Transduction and Targeted Therapy 2021年第8期6卷 2315-2318页

作者： Bingyu Yang xianfeng zhang Huanle Gong Yuhui Huang Chang Wang Haiyan Liu Chen Dong Shoubao Ma Xiaojin Wu Depei Wu National Clinical Research Center for Hematologic Diseases The First Affiliated Hospital of Soochow UniversityJiangsu Institute of HematologyInstitute of Blood and Marrow TransplantationCollaborative Innovation Center of HematologySoochow UniversitySuzhouChina Department of Hematology The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'anShaanxiChina Center for Clinical Laboratory the First Affiliated Hospital of Soochow UniversitySuzhouChina Cyrus Tang Hematology Center Collaborative Innovation Center of Hematologythe Key Laboratory of Stem Cells and Biomedical Materials of Jiangsu Province and the Chinese Ministry of Science and TechnologySoochow UniversitySuzhouChina School of Radiation Medicine and Protection Medical College of Soochow UniversityCollaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education InstitutionsJiangsu Provincial Key Laboratory of Radiation Medicine and ProtectionSuzhouChina lmmunology Programme Life Sciences Institute and Department of Microbiology and ImmunologyYong Loo Lin School of MedicineNational University of SingaporeSingaporeSingapore Institute for Immunology and School of Medicine Tsinghua UniversityBeijingChina

Dear Editor,Acute graft-versus-host disease(aGVHD)is the leading cause of transplantation-related mortality,and limits therapeutic benefits of allogeneic bone marrow transplantation(allo-BMT).New insight is needed int... 详细信息

关键词： homeostasis Acute mortality

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矿山法修建水下隧道的设计要点

现代隧道技术 2014年第2期51卷 101-107页

作者：张先锋中铁隧道勘测设计院有限公司天津300133

水下隧道的设计和常规隧道相比有许多不同的特点,修建方法也有许多不同。文章通过综合考虑地质条件、接线条件、外部条件、工程造价等因素,论证了工法选择的要点,并指出岩石覆盖厚度、隧道防排水方式会直接影响矿山法水下隧道的安全性... 详细信息

水下隧道的设计和常规隧道相比有许多不同的特点,修建方法也有许多不同。文章通过综合考虑地质条件、接线条件、外部条件、工程造价等因素,论证了工法选择的要点,并指出岩石覆盖厚度、隧道防排水方式会直接影响矿山法水下隧道的安全性和经济性;在进行充分论证和分析的基础上,提出了确定隧道埋深与防排水形式的方法和原则,对采用不同的防排水方式,明确了相应的水压力计算方法;通过工程实例分析,提出了保证隧道耐久性和保障水下隧道施工安全的有效方法。

关键词：水下隧道矿山法设计要点

A seven-gene-deleted African swine fever virus is safe and effective as a live attenuated vaccine in pigs

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Science China(Life Sciences) 2020年第5期63卷 623-634页

作者： Weiye Chen Dongming Zhao Xijun He Renqiang Liu Zilong Wang xianfeng zhang Fang Li Dan Shan Hefeng Chen Jiwen zhang Lulu Wang Zhiyuan Wen Xijun Wang Yuntao Guan Jinxiong Liu Zhigao Bu State Key Laboratory of Veterinary Biotechnology Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150001China National High Containment Laboratory for Animal Diseases Control and Prevention Harbin 150069China

African swine fever(ASF)is a devastating infectious disease in swine that is severely threatening the global pig *** efficacious vaccine is urgently ***,we used the Chinese ASFV HLJ/18 as a backbone and generated a series of genedeleted *** virulence,immunogenicity,safety,and protective efficacy evaluation in specific-pathogen-free pigs,commercial pigs,and pregnant sows indicated that one virus,namely HLJ/18-7GD,which has seven genes deleted,is fully attenuated in pigs,cannot convert to the virulent strain,and provides complete protection of pigs against lethal ASFV *** study shows that HLJ/-18-7GD is a safe and effective vaccine against ASFV,and as such is expected to play an important role in controlling the spread of ASFV.

关键词： African swine fever vaccine safety protective efficacy pig

英国国家规划政策指南——引导可持续发展的规划调控手段

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城市规划 2006年第6期30卷 48-53,64页

作者：张险峰中国城市规划设计研究院

国家“规划政策指南”是英国规划体系中一项重要的政府调控手段。自1988年开始颁布实施以来,对各阶段的规划实践起到了明显的指导作用。开放的框架设计、适时的主题选择、明确的条款表述、及时的检讨修订、透明的信息传递,使该政策表述... 详细信息

国家“规划政策指南”是英国规划体系中一项重要的政府调控手段。自1988年开始颁布实施以来,对各阶段的规划实践起到了明显的指导作用。开放的框架设计、适时的主题选择、明确的条款表述、及时的检讨修订、透明的信息传递,使该政策表述系统既具高度前瞻性和应用性,又具灵活适应性和普及性。对当前我国规划从技术型向政策型转变的关键时期具有很好的借鉴意义。

关键词：英国规划政策指南

基于Matlab的表面粗糙度数据采集处理研究

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仪器仪表学报 2006年第Z2期27卷 1328-1329页

作者：韩进宏张先峰山东理工大学淄博255049

提出了利用Matlab进行表面粗糙度测量数据采集及处理的一种方法。包括用串口通信类(serial)开发出通信软件,实现数据采集;用Matlab信号处理工具箱,设计FIR数字滤波器;用Matlab的数据处理函数,求解最小二乘中线;用Matlab丰富的数值运算... 详细信息

提出了利用Matlab进行表面粗糙度测量数据采集及处理的一种方法。包括用串口通信类(serial)开发出通信软件,实现数据采集;用Matlab信号处理工具箱,设计FIR数字滤波器;用Matlab的数据处理函数,求解最小二乘中线;用Matlab丰富的数值运算和数据处理函数,进行粗糙度评定参数的计算,并利用图形界面GUI显示表面轮廓图形以及tp曲线。

关键词：表面粗糙度 Matlab 数字滤波串口通信最小二乘法