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Modeling and control of a small solar fuel cell hybrid energy system

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第5期8卷 734-740页

作者： LI Wei ZHU Xin-jian CAO guang-yi Fuel Cell Research Institute Shanghai Jiao Tong University Shanghai 200240 China

This paper describes a solar photovoltaic fuel cell (PVEC) hybrid generation system consisting of a photovoltaic (PV) generator, a proton exchange membrane fuel cell (PEMFC), an electrolyser, a supercapacitor, a storage gas tank and power conditioning unit (PCU). The load is supplied from the PV generator with a fuel cell working in parallel. Excess PV energy when available is converted to hydrogen using an electrolyser for later use in the fuel cell. The individual mathematical model for each component is presented. Control strategy for the system is described. MATLAB/Simulink is used for the simulation of this highly nonlinear hybrid energy system. The simulation results are shown in the paper.

关键词： Photovoltaic (PV) Fuel cell Electrolyser Maximum power point tracking

Engineering nerve guidance conduits with three-dimenisonal bioprinting technology for long gap peripheral nerve regeneration

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Neural Regeneration Research 2019年第12期14卷 2073-2074页

作者： jian Du Xiaofeng jia Department of Neurosurgery University of Maryland School of Medicine Baltimore MD USA Department of Orthopedics Anatomy Neurobiology University of Maryland School of Medicine Baltimore MD USA Department of Biomedical Engineering Anesthesiology and Critical Care Medicine Johns Hopkins University School of Medicine Baltimore MD USA

Nerve guidance conduits (NGCs) are tubular structures that are used to bridge the gap of a severed nerve, thereby acting as a guide and protective micro-environment for the regenerating axons and as a barrier against the in-growth of scar-forming tissue. In the last few decades, the concept of NGCs has evolved from a research tool to investigate nerve regeneration into a translational product that is now being used clinically as an alternative for autologous nerve graft repair, due to their availability and ease of fabrication.

关键词： Engineering nerve guidance three-dimenisonal regeneration

Anticorrosion Performance of Epoxy Coatings Containing Small Amount of Inherently Conducting PEDOT/PSS on Hull Steel in Seawater

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Journal of Materials Science & Technology 2013年第7期29卷 678-684页

作者： jian Hou guang Zhu Jingkun Xu Huajian Liu Science and Technology on Marine Corrosion and Protection Laboratory Luoyang Ship Material Research Institute jiangxi Key Laboratory of Organic Chemistry Jiangxi Science & Technology Normal University

Corrosion protection of the hull steel by the conventional epoxy paint containing a small amount of commercial poly（3,4-ethylenedioxythiophene）/poly（styrene sulfonate）（PEDOT/PSS）, which is one of the most popular and successful inherently conducting polymers as the corrosion inhibitor was studied. The corrosion behavior of the samples was investigated in seawater by electrochemical impedance spectroscopy and open circuit potential. Scanning electron microscopy was used to observe the surface morphology of the samples after corrosion. It was found that adding a small amount of PEDOT/PSS to the epoxy resin can significantly improve its corrosion protection.

关键词： Anticorrosion Conducting polymer Electrochemical impedance spectroscopy (EIS) Coating

Hybrid optimization for charge planning problem in twin strands continuous casting production

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Journal of Iron and Steel Research International 2021年第5期28卷 520-529页

作者： jian Yi Shu-jin jia Bin Du College of Information Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina Institute of Intelligent Manufacturing Baosteel Central Research InstituteShanghai 201900China

Charge planning is one of batching problems for steelmaking and continuous casting production,and its optimization will be conducive to subsequent cast *** planning problem in the twin strands continuous casting production was studied,where casting width of the odd strand might be different from that of the even *** the different widths in the twin strands,the resulting counterweights and the constraints of steelmaking and continuous casting,a multiobjective optimization model was established to minimize the number of charges,the number of scale pairs,the surplus and the upgrading costs of steel ***,a hybrid optimization algorithm combined with heuristic and mutation-based estimation of distribution algorithm was proposed to solve the *** were conducted on several groups of test data collected from practical production orders of *** computational results demonstrate that the proposed algorithm can generate better solutions than the manual *** proposed model and algorithm proved to be effective and practical.

关键词： Steelmaking Continuous casting Production planning Charge Cast Estimation of distribution algorithm

A Facile Approach to Regioselective 1-O-Deacylation of Peracylated Glycopyranoses

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Chinese Chemical Letters 2003年第3期14卷 233-234页

作者： jia Qiang DONG Shu jia ZHANG Yan guang WANG Department of Chemistry Zhejiang UniversityHangzhou 310027

The regioselective 1-O-deacylation of peracylated glycopyranoses 1a-d with zinc chloride and zinc oxide in THF/MeOH gave the corresponding tetra-O-acylglycopyranoses 2a-d in good yields.

关键词： Hydroxy sugars oligosaccaride zinc chloride.

Azimuthal elastic impedance-based Fourier coefficient variation with angle inversion for fracture weakness

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Petroleum Science 2020年第1期17卷 86-104页

作者： Lin Li jia-jia Zhang Xin-Peng Pan guang-Zhi Zhang School of Geosciences China University of Petroleum(East China)Qingdao 266580ShandongChina School of Geoscience and Info-Physics Central South UniversityChangsha 410082HunanChina Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071ShandongChina

Quantitative inversion of fracture weakness plays an important role in fracture *** reservoirs with a set of vertical fractures as horizontal transversely isotropic media,the logarithmic normalized azimuthal elastic impedance(EI)is rewritten in terms of Fourier coefficients(FCs),the 90°ambiguity in the azimuth estimation of the symmetry axis is resolved by judging the sign of the second FC,and we choose the FCs with the highest sensitivity to fracture weakness and present a feasible inversion workflow for fracture weakness,which involves:(1)the inversion for azimuthal EI datasets from observed azimuthal angle gathers;(2)the prediction for the second FCs and azimuth of the symmetry axis from the estimated azimuthal EI datasets;and(3)the estimation of fracture weakness combining the extracted second FCs and azimuth of the symmetry axis iteratively,which is constrained utilizing the Cauchy sparse regularization and the low-frequency regularization in a Bayesian *** on synthetic and field data demonstrate that the 90°ambiguity in the azimuth estimation of the symmetry axis has been removed,and reliable fracture weakness can be obtained when the estimated azimuth of the symmetry axis deviates less than 30°,which can guide the prediction of fractured reservoirs.

关键词： Fracture weakness Azimuth of the symmetry axis Azimuthal Fourier coefficients HTI Azimuthal elastic impedance

Comparative proteomic analysis of differentially expressed proteins in human pancreatic cancer tissue

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Hepatobiliary & Pancreatic Diseases International 2009年第2期8卷 193-200页

作者： Chen, jian-Hua Ni, Run-Zhou Xiao, Ming-Bing Guo, Ji-guang Zhou, jia-Wei Nantong Univ Affiliated Hosp Dept Gastroenterol Nantong 226001 Peoples R China Chinese Acad Sci Shanghai Inst Biol Sci Inst Neurosci Shanghai 200030 Peoples R China

BACKGROUND: Pancreatic cancer is one of the most common malignant tumors. Early diagnosis of pancreatic cancer is difficult because of the latent onset and lack of good biomarkers. This study aimed to look for and identify differentially expressed proteins in tissues of pancreatic cancer and adjacent noncancerous tissues by proteomic approaches so as to provide information about possible pancreatic cancer markers and therapeutic targets. METHODS: Proteins extracted front 3 paired adjacent noncancerous and cancerous pancreatic tissue specimens were separated by two-dimensional gel electrophoresis (2-DE). The protein spots exhibiting statistical alternations between the two groups through computerized image analysis were then identified by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS). In addition, Western blotting and immunohistochemistry were performed to verify the expression of certain candidate proteins. RESULTS: Twelve proteins were significantly upregulated and 4 were downregulated between cancerous and paired adjacent noncancerous pancreatic tissues. Several proteins (S100A11, Ig gamma-l chain C region, GSTO1 and peroxiredoxin 4) were found for the first time to be associated with pancreatic cancer. Differential expression of some identified proteins was further confirmed by Western blotting analysis and/or immunohistochemical analysis. CONCLUSIONS: Comparative proteomic analysis using 2-DE and MALDI-TOF-MS is an effective method for identifying differentially expressed proteins that may be the potential diagnostic biomarkers and therapeutic targets for pancreatic cancer.

关键词： electrophoresis, gel, two-dimensional pancreatic neoplasms proteomics

A multi-enterprise quality function deployment paradigm with unstructured decision-making in linguistic contexts

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Journal of Systems Engineering and Electronics 2023年第4期34卷 966-980页

作者： PENG jian’gang XIA guang SUN Baoqun WANG Shaojie Intelligent Manufacturing Institute Hefei University of TechnologyHefei 230009China Institute of Automotive Engineering Hefei University of TechnologyHefei 230009China

This paper presents an operational framework of unstructured decision-making approach involving quality function deployment(QFD)in an uncertain linguistic ***,QFD is extended to the multi-enterprise paradigm in a real-world manufacturing ***,hesitant fuzzy linguistic term sets(HFLTSs),which facilitate the management and handling of information equivocality,are designed to construct a house of quality(HoQ)in the product planning *** technique of computing with words is applied to bridge the gap between mechanisms of the human brain and machine processes with fuzzy linguistic term ***,a multi-enterprise QFD pattern is formulated as an unstructured decision-making problem for alternative infrastructure project selection in a manufacturing *** inter-relationships of cooperative partners are directly matched with a back propagation neural network(BPNN)to construct the multi-enterprise manufacturing *** resilience of the manufacturing organization is considered by formulating an outranking method on the basis of HFLTSs to decide on infrastructure project ***,a real-world example,namely,the prototype manufacturing of an automatic transmission for a vehicle,is provided to illustrate the effectiveness of the proposed decision-making approach.

关键词： decision-making quality function deployment(QFD) uncertainty fuzzy set

Surface-based map plasticity of brain regions related to sensory motor and pain information processing after osteonecrosis of the femoral head

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Neural Regeneration Research 2022年第4期17卷 806-811页

作者： Jie Ma Xu-Yun Hua Mou-Xiong Zheng jia-jia Wu Bei-Bei Huo Xiang-Xin Xing Sheng-Yi Feng Bo Li jian-guang Xu School of Rehabilitation Science Shanghai University of Traditional Chinese MedicineShanghaiChina Department of Traumatology and Orthopedics Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina Yangzhi Rehabilitation Hospital(Shanghai Sunshine Rehabilitation Center) Tongji UniversityShanghaiChina Center of Rehabilitation Medicine Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghaiChina

Pain is one of the manifestations of hip disorder and has been proven to lead to the remodeling of somatotopic map plasticity in the ***,most studies are volume-based which may lead to inaccurate anatomical positioning of functional *** methods that work on the cortical surface may be more sensitive than those using the full brain volume and thus be more suitable for map plasticity *** this prospective cross-sectional study performed in Yueyang Hospital of Integrated Traditional Chinese and Western Medicine,Shanghai University of Traditional Chinese Medicine,China,20 patients with osteonecrosis of the femoral head(12 males and 8 females,aged 56.80±13.60 years)and 20 healthy controls(9 males and 11 females,aged 54.56±10.23 years)were included in this *** of resting-state functional magnetic resonance imaging were *** results revealed that compared with healthy controls,compared with the healthy controls,patients with osteonecrosis of the femoral head(ONFH)showed significantly increased surface-based regional homogeneity(Re Ho)in areas distributed mainly in the left dorsolateral prefrontal cortex,frontal eye field,right frontal eye field,and the premotor cortex and decreased surface-based Re Ho in the right primary motor cortex and primary sensory *** showing significant differences in surfacebased Re Ho values between the healthy controls and patients with ONFH were defined as the regions of ***-based functional connectivity was performed to investigate interregional functional *** the areas with decreased surface-based Re Ho in the frontal eye field and right premotor cortex were used as the regions of interest,compared with the healthy controls,the patients with ONFH displayed increased functional connectivity in the right middle frontal cortex and right inferior parietal cortex and decreased functional connectivity in the right precentral cortex and right middle occipital ***

关键词： cortical thickness functional connectivity hip disorder osteonecrosis of the femoral head Re Ho sensorimotor cortex surface-based map plasticity volume of subcortical gray matter nuclei