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LiPF6 and lithium difluoro(oxalato)borate/ethylene carbonate+dimethyl carbonate+ethyl(methyl)carbonate electrolyte for LiNi0.5Mn1.5O4 cathode

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Journal of Central South University 2017年第5期24卷 1013-1018页

作者： zhou Hong-ming GENG wen-jun LI jian School of Materials Science and Engineering Central South UniversityChangsha 410083China Hunan Province Zhengyuan Energy Storage Materials and Devices Research Changsha 410083China

LiODFB electrolyte’s compatibility with LiNi0.5Mn1.5O4high-voltage cathode material was studied by cyclic voltammetry, charge-discharge test and AC impedance. The results show that at 25 and 60 °C, the LiODFB-based electrolyte has better electrochemical stability than LiPF6. AC impedance plots show that the LiODFB battery has a lower charge-transfer resistance than LiPF6battery at 60 °C, which indicates that LiODFB battery has excellent cycling performance at high temperature. At 25 and 60 °C, the LiNi0.5Mn1.5O4/Li half cells with LiODFB or LiPF6as electrolyte all have simple redox peak, showing that each of them has an excellent reversibility. LiODFB battery has better cycle performance than LiPF6battery at 25 °C and 60 °C. At 25 °C, their 0.5C initial discharge specific capacities are 126.3 and 131.6 mA·h/g, and their capacity retention ratios of the 100th cycle are 97.1% and 94.7%, respectively. At 60 °C, their 0.5C initial discharge specific capacities are 132.6 and 129.1 mA·h/g, and their capacity retention ratios of the 100th cycle are 94.1% and 81.7%, respectively. © 2017, Central South University Press and Springer-Verlag GmbH Germany.

关键词： Carbonation Cathodes Charge transfer Cyclic voltammetry Electric batteries Electric discharges Electric impedance Electrodes Electrolytes Lithium compounds Manganese

Detecting Vulnerability on IoT Device Firmware: A Survey

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IEEE/CAA Journal of Automatica Sinica 2023年第1期10卷 25-41页

作者： Xiaotao Feng Xiaogang Zhu Qing-long Han Wei zhou Sheng wen Yang Xiang School of Science Computing and Engineering TechnologiesSwinburne University of TechnologyHawthorn VIC 3122Australia IEEE

Internet of things (IoT) devices make up 30%of all network-connected endpoints,introducing vulnerabilities and novel attacks that make many companies as primary targets for *** address this increasing threat surface,every organization deploying IoT devices needs to consider security risks to ensure those devices are secure and *** all the solutions for security risks,firmware security analysis is essential to fix software bugs,patch vulnerabilities,or add new security features to protect users of those vulnerable ***,firmware security analysis has never been an easy job due to the diversity of the execution environment and the close source of *** two distinct features complicate the operations to unpack firmware samples for detailed *** also make it difficult to create visual environments to emulate the running of device *** researchers have developed many novel methods to overcome various challenges in the past decade,critical barriers impede firmware security analysis in ***,this survey is motivated to systematically review and analyze the research challenges and their solutions,considering both breadth and ***,based on the analysis perspectives,various methods that perform security analysis on IoT devices are introduced and classified into four *** challenges in each category are discussed in detail,and potential solutions are proposed *** then discuss the flaws of these solutions and provide future directions for this research *** survey can be utilized by a broad range of readers,including software developers,cyber security researchers,and software security engineers,to better understand firmware security analysis.

关键词： Firmware emulation internet of things(IoT)firmware network fuzzing security static analysis

Flow field analyses of a porous membrane-separated,double-layered microfluidic chip for cell co-culture

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Acta Mechanica Sinica 2020年第3期36卷 754-767页

作者： Shenbao Chen jian Xue Jinrong Hu Qihan Ding Luwen zhou Shiliang Feng Yuhong Cui Shouqin Lu Mian long Center of Biomechanics and Bioengineering Key Laboratory of Microgravity(National Microgravity Laboratory)Beijing Key Laboratory of Engineered Construction and Mechanobiologyand CAS Center for Excellence in Complex System MechanicsInstitute of MechanicsChinese Academy of SciencesBeijing100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Nonlinear Mechanics(LNM) Institute of MechanicsChinese Academy of SciencesBeijing 100190China Faculty of Mechanical Engineering and Mechanics Ningbo UniversityNingbo 315211ZhejiangChina Department of Mechanics Tianjin UniversityTianjin 300072China

Organs-on-chips composed of a porous membrane-separated,double-layered channels are used widely in elucidating the effects of cell co-culture and flow shear on biological *** the diversity of channel geometry and membrane permeability is applied,their quantitative correlation with flow features is still *** boundary methods(IBM)simulations and theoretical modelling were performed in this *** simulations showed that channel length,height and membrane permeability jointly regulated the flow features of flux,penetration velocity and wall shear stress(WSS).Increase of channel length,lower channel height or membrane permeability monotonically reduced the flow flux,velocity and WSS in upper channel before reaching a *** the flow flux in lower channel monotonically increased with the increase of each factor,the WSS surprisingly exhibited a biphasic pattern with first increase and then decrease with increase of lower channel ***,the transition threshold of maximum WSS was sensitive to the channel length and membrane *** modeling,integrating the transmembrane pressure difference and inlet flow flux with chip geometry and membrane permeability,was in good agreement with IBM *** analyses provided theoretical bases for optimizing flow-specified chip design and evaluating flow microenvironments of in vivo tissue.

关键词： Immersed boundary method Porous membrane Wall shear stress Penetration velocity Microfluidic chip

The dual roles of cytokines in Alzheimer’s disease:update on interleukins, TNF-α,TGF-β and IFN-γ

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Translational Neurodegeneration 2016年第1期5卷 52-66页

作者： Cong Zheng Xin-wen zhou jian-Zhi Wang Department of Pathophysiology School of Basic Medicine and the Collaborative Innovation Center for Brain ScienceKey Laboratory of Ministry of Education of China for Neurological DisordersTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Co-innovation Center of Neuroregeneration Nantong 226000China

Alzheimer’s disease(AD)is one of the most common neurodegenerative disorders in the *** the mechanisms underlying AD neurodegeneration are not fully understood,it is well recognized that inflammation plays a crucial role in the initiation and/or deterioration of AD *** evidence suggests that different cytokines,including interleukins,TNF-α,TGF-βand IFN-γ,are actively participated in AD pathogenesis and may serve as diagnostic or therapeutic targets for AD ***,we review the progress in understanding the important role that these cytokines or neuroinflammation has played in AD etiology and pathogenesis.

关键词： Alzheimer’s disease Cytokines Interleukins TNF-α TGF-β IFN-γ

Research on Multi-robot Coordination Searching Ignition Sources Approach

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Journal of Harbin Institute of Technology(New Series) 2013年第2期20卷 50-54页

作者： Jun Li wen-long Song Pu-Cheng zhou College Mechanical and Electrical Northeast Forestry University Dept. of Information Engineering Artillery Academy of PLA

For the purpose of study on forecasting forest fire behavior,a probability approach was presented to search ignition sources by multi-robot coordination. Firstly,the environment map is built based on Bayes rules. Then,the probability searching strategy based on the environment map was designed. Every grid of the searching area was assigned searching expectation value, and robots selected the grid with the highest expectation value as its searching target. The simulation results show the search time reduces greatly,which proves the feasibility and validity of the given algorithm under unknown fire condition.

关键词： fire-fighting robots Bayes rules multi-robot coordination

Multi-parameter optimization of machining impeller surface based on the on-machine measuring technique

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Chinese Journal of Aeronautics 2019年第8期32卷 2000-2008页

作者： Gang WANG wen-long LI Fan RAO Zheng-rong HE zhou-ping YIN State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China China National South Aviation Industry Co. LtdZhuzhou 412002China

Selecting the optimal machining parameters for impeller surface is a challenging task in the automatic manufacturing industry, due to its free-form surface and deep-crooked flow *** experimental methods require lots of machining experiments and off-line tests, which may lead to high machining cost and low efficiency. This paper proposes a novel method of machining parameters optimization for an impeller based on the on-machine measuring technique. The absolute average error and standard deviation of the measured points are used to define the grey relational grade for reconstructing the objective function, and the complex problem of multi-objective optimization is simplified into a problem of single-objective optimization. Then, by comparing the values of the defined grey relational grade in a designed orthogonal experiment, the optimal combination of the machining parameters is obtained. The experiment-solving process of the objective function corresponds to the minimization of the used errors, which is advantageous to reducing the machining error. The proposed method is efficient and low-cost, since it does not require re-clamping the workpiece for off-line tests. Its effectiveness is verified by an on-machine inspection experiment of the impeller blade.

关键词： Grey relational grade Impeller surface Multi-parameters optimization On-machine measuring Orthogonal experiment

Multiple sparganosis spinal infections mainly in the thoracic region: A case report

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World Journal of Clinical Cases 2023年第36期11卷 8507-8511页

作者： Gan-Jun wen jian Chen Shi-Fei Zhang Zhi-Sen zhou Gen-long Jiao Department of Orthopaedics The Sixth Affiliated Hospital of Jinan UniversityDongguan 523573Guangdong ProvinceChina

BACKGROUND Spinal infection with sparganosis is rarely seen,and multiple spinal infections with sparganosis in the thoracic spine have not been *** SUMMARY In this case report,a 56-year old male patient suffered from back pain for 3 *** tomography examination of the thoracic spine showed bone destruction of the T4-5 vertebral body,as well as the right pedicle and lamina of *** resonance imaging showed high signals on T2W1 images and fat-suppressed images in the right vertebral body of T4-5 and the right pedicle and lamina of T5,a high signal in the vertebral canal,and similar high signals in the paravertebral and subcutaneous regions of the whole *** biopsy showed *** definite diagnosis,the patient was treated with debridement of T4-5 infected lesions under a microscope,bone grafting and internal ***,the patient's back pain symptoms were significantly relieved;the incision healed after one-stage treatment,and alben-dazole antiparasitic treatment was *** Puncture biopsy is the most reliable method to diagnose infection by *** of infected lesions under the microscope and albendazole for anti-parasitic treatment are safe and effective.

关键词： Sparganosis Spine Infection Case report

Characterization of FGFR signaling pathway as therapeutic targets for sarcoma patients

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Cancer Biology & Medicine 2016年第2期13卷 260-268页

作者： wen-Ya zhou Hong Zheng Xiao-Ling Du Ji-long Yang Department of Bone and Soft Tissue Tumor Tianjin Medical University Cancer Institute & Hospital National Clinical Research Center for Cancer Tianjin 300060 China Department of Epidemiology and Biostatistics Tianjin Medical University Cancer Institute & Hospital National Clinical Research Center for Cancer Tianjin 300060 China Department of Diagnostics Tianjin Medical University Tianjin 300061 China

The fibroblast growth factor receptor(FGFR) family plays important roles in regulating cell growth, proliferation, survival,differentiation and angiogenesis. Deregulation of the FGF/FGFR signaling pathway has been associated with multiple development syndromes and cancers, and thus therapeutic strategies targeting FGFs and FGFR in human cancer are currently being ***, few studies on the FGF/FGFR pathway have been conducted in sarcoma, which has a poor outcome with traditional treatments such as surgery, chemotherapy, and radiotherapy. Hence, in the present review, we provide an overview of the role of the FGF/FGFR pathway signal in sarcoma and FGFR inhibitors, which might be new targets for the treatment of sarcomas according to recent research.

关键词： Sarcoma FGFR signaling pathway FGFR inhibitors

A new model for thermal conductivity of“continuous matrix/dispersed and separated 3D-particles”type composite materials and its application to WC-M(M=Co,Ag)systems

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Journal of Materials Science & Technology 2022年第2期97卷 123-133页

作者： Shiyi wen Yong Du Jing Tan Yuling Liu Peng zhou jianzhan long George Kaptay State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Hunan Provincial Key Defense Laboratory of High Temperature Wear-Resisting Materials and Preparation Technology Hunan University of Science and TechnologyXiangtan 411201China State Key Laboratory of Cemented Carbide Zhuzhou 412000China University of Miskolc MiskolcEgyetemváros3515Hungary

In the present work a new thermal conductivity model is developed for two-phase composite materials,which are consisted of a continuous matrix and dispersed 3 D-particles separated from each other by the matrix as a function of grain size and volume ratio of the dispersed particles at different *** model is applied to reproduce experimental thermal conductivity values of cemented carbide systems WC-Co and *** agreement was found between measured thermal conductivity data originating from both this work and recent literature and the calculated ones only using semi-empirical parameters for the interfacial thermal resistance(ITR)values at WC/Co,WC/Ag and WC/WC interfaces as a function of ***,the temperature and grain size dependence of the thermal conductivity for WC is established for the first *** model works well for the case when the matrix(Ag)has a higher thermal conductivity compared to that of the WC particles and also for the case when the matrix(Co)has a lower thermal conductivity compared to that of the WC *** new model forms a physically sound basis for further development/materials design of cemented carbides and particlereinforced composite materials.

关键词： Thermal conductivity WC-Co WC-Ag Modeling Cemented carbides Composite materials