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Progress on direct assembly approach for in situ fabrication of electrodes of reversible solid oxide cells

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Materials Reports(Energy) 2021年第2期1卷 61-69页

作者： Na Ai Yuanfeng Zou Zhiyi Chen Kongfa Chen San Ping Jiang College of Materials Science and Engineering Fuzhou UniversityFuzhouFujian350108China Testing Center Fuzhou UniversityFuzhouFujian350108China WA School of Mines:Minerals Energy&Chemical EngineeringCurtin UniversityPerthWA6102Australia

Reversible solid oxide cells(SOCs)are very efficient and clean for storage and regeneration of renewable electrical energy by switching between electrolysis and fuel cell *** of the most critical factors governing the efficiency and durability of SOCs technology is the stability of the interface between oxygen electrode and electrolyte,which is conventionally formed by sintering at a high temperature of~1000–1250℃,and which suffers from delamination problem,particularly for reversibly operated *** the other hand,our recent studies have shown that the electrode/electrolyte interface can be in situ formed by a direct assembly approach under the electrochemical polarization conditions at 800℃and *** direct assembly approach provides opportunities for significantly simplifying the cell fabrication procedures without the doped ceria barrier layer,enabling the utilization of a variety of high-performance oxygen electrode materials on barrier layer–free yttria-stabilized zirconia(YSZ)*** importantly,the in situ polarization induced interface shows a promising potential as highly active and durable interface for reversible *** objective of this progress report is to take an overview of the origin and research progress of in situ fabrication of oxygen electrodes based on the direct assembly *** prospect of direct assembly approach in the development of effective SOCs and in the fundamental studies of electrode/electrolyte interface reactions is discussed.

关键词： Reversible solid oxide cell Direct assembly Oxygen electrode Hydrogen electrode Polarization induced interface Electrode/electrolyte interface stability

Mesenchymal stem cell-derived small extracellular vesicles in the treatment of human diseases:Progress and prospect

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World Journal of Stem Cells 2021年第1期13卷 49-63页

作者： Jie Shi Yu-Chen Zhao Zhi-Fang Niu Hao-Jun Fan Shi-Ke Hou Xiao-Qin Guo Lu Sang Qi Lv Institute of Disaster Medicine Tianjin UniversityTianjin 300072China Department of Biomaterials and Regenrative Medicine Tianjin Key Laboratory of Disaster Medicine TechnologyTianjin 300072China General Hospital Tianjin Medical UniversityTianjin 300052C

Mesenchymal stem cells(MSCs)are self-renewing,multipotent cells that could differentiate into multiple ***-based therapy has become an attractive and promising strategy for treating human diseases through immune regulation and tissue ***,accumulating data have indicated that MSC-based therapeutic effects are mainly attributed to the properties of the MSC-sourced secretome,especially small extracellular vesicles(sEVs).sEVs are signaling vehicles in intercellular communication in normal or pathological *** contain natural contents,such as proteins,mRNA,and microRNAs,and transfer these functional contents to adjacent cells or distant cells through the circulatory ***-sEVs have drawn much attention as attractive agents for treating multiple *** properties of MSC-sEVs include stability in circulation,good biocompatibility,and low toxicity and ***,emerging evidence has shown that MSC-sEVs have equal or even better treatment efficacies than MSCs in many kinds of *** review summarizes the current research efforts on the use of MSC-sEVs in the treatment of human diseases and the existing challenges in their application from lab to clinical practice that need to be considered.

关键词： Mesenchymal stem cells Small extracellular vesicles Exosomes Human diseases Therapeutics Prospects

Inter-satellite range-finding method with high precision and large range based on optoelectronic resonance

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Chinese Optics Letters 2016年第11期14卷 43-47页

作者：陈斌于晋龙王菊李天宇王文睿于洋谢田元 School of Electronic Information Engineering Tianjin University College of Biomedical Engineering & Instrument Science Zhejiang University

As microsatellite technology develops,precise inter-satellite measurement shows its significance in distributed satellite *** this Letter,a novel technique is proposed for measuring the inter-satellite distance,which adopts optoelectronic resonance and has a function of *** cavities have a high spectral purity and a high oscillation *** utilizing the accumulative amplification principle to convert the measurement of distance to that of the frequency,high accuracy is *** the experiment,this measuring scheme has a large measuring range between 1 and 6 km（can be potentially larger）,and the accuracy is better than 1.5 *** relative accuracy reaches the level of 10^-10.

关键词： Range finding Resonance

退化生产系统免费保修条件下的最优定期检修策略(英文)

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应用概率统计 2012年第1期28卷 63-78页

作者：胡飞邓士梅天津大学数学系天津300072 中国电子科技集团公司第十八研究所天津300381

本文考虑了一个其产品保修期内免费小修的退化生产系统的定期检修策略.系统的退化过程包括三个状态:可控制状态,不可控制状态,故障状态.过程呆在可控制状态和不可控制状态的时间假设都服从指数分布.生产系统在固定的时刻t﹡或发生故障... 详细信息

本文考虑了一个其产品保修期内免费小修的退化生产系统的定期检修策略.系统的退化过程包括三个状态:可控制状态,不可控制状态,故障状态.过程呆在可控制状态和不可控制状态的时间假设都服从指数分布.生产系统在固定的时刻t﹡或发生故障时进行检修,两者以先发生为准.本文讨论了使单位产品每周期期望成本最小的最优定期检修时间t﹡,三种特殊情况显示了最优值t的性质.此外,灵敏性分析和数字实例说明了模型中的参数对最优定期检修策略的影响.

关键词：定期检修策略退化生产系统保修经济生产批量

刚性圆柱结构顺流向涡激振动特性分析(英文)

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船舶力学 2012年第9期16卷 1035-1040页

作者：徐万海吴应湘胡松涛杜杰天津大学水利工程仿真与安全国家重点实验室天津300072 中国科学院力学研究所水动力学与海洋工程重点实验室北京100190 新兴重工集团有限公司北京100070

文章研究了刚性支承圆柱的顺流向涡激振动特性,在第二激励区域,运用van der Pol方程描述漩涡脱落的尾迹特性,采用尾流振子模型计算圆柱结构的响应,讨论和分析了质量-阻尼参数、质量率和结构阻尼对顺流向涡激振动的影响机理。

关键词：顺流向涡激振动圆柱尾流振子模型质量-阻尼参数

Superhydrophilic–superhydrophobic patterned surfaces:From simplified fabrication to emerging applications

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Nanotechnology and Precision Engineering 2022年第3期5卷 55-79页

作者： Hao Chen Xiaoping Li Dachao Li State Key Laboratory of Precision Measuring Technology and Instruments Tianjin UniversityTianjin 300072China

Superhydrophilic–superhydrophobic patterned surfaces constitute a branch of surface chemistry involving the two extreme states of superhydrophilicity and superhydrophobicity combined on the same surface in precise *** surfaces have many advantages,including controllable wettability,enrichment ability,accessibility,and the ability to manipulate and pattern water droplets,and they offer new functionalities and possibilities for a wide variety of emerging applications,such as microarrays,biomedical assays,microfluidics,and environmental *** review presents the basic theory,simplified fabrication,and emerging applications of superhydrophilic–superhydrophobic patterned ***,the fundamental theories of wettability that explain the spreading of a droplet on a solid surface are ***,the fabrication methods for preparing superhydrophilic–superhydrophobic patterned surfaces are introduced,and the emerging applications of such surfaces that are currently being explored are ***,the remaining challenges of constructing such surfaces and future applications that would benefit from their use are discussed.

关键词： Superhydrophobicity Superhydrophilicity Wettability patterns Droplet array Biosensor

Testing for Nonlinearity in Dynamic Characteristics of Vertical Upward Oil-Gas-Water Three-phase Bubble and Slug Flows

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Chinese Journal of Chemical Engineering 2012年第5期20卷 870-882页

作者：朱雷金宁德高忠科杜萌王振亚 School of Electrical Engineering&Automation Tianjin University

Based on the conductance fluctuation signals measured from vertical upward oil-gas-water three-phase flow experiment, time frequency representation and surrogate data method were used to investigate dynamical characteristics of oil-in-water type bubble and slug flows. The results indicate that oil-in-water type bubble flow will turn to deterministic motion with the increase of oil phase fraction f o and superficial gas velocity U sg under fixed flowrate of oil-water mixture Q mix . The dynamics of oil-in-water type slug flow becomes more complex with the increase of U sg under fixed flowrate of oil-water mixture. The change of f o leads to irregular influence on the dynamics of slug flow. These interesting findings suggest that the surrogate data method can be a faithful tool for characterizing dynamic characteristics of oil-in-water type bubble and slug flows.

关键词： oil-gas-water three-phase flow conductaJace fluctuating signals time-frequency representation surrogate data method

Comparative Analysis on Space Form of Block in Arid Region and Ecological Design Strategy

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Meteorological and Environmental Research 2018年第3期9卷 24-29页

作者： Wang Yining Zang Xinyu Chen Tian School of Architecture Tianjin University

Due to unique geographical position and climatic characteristics,there are more economic,social,resource,environmental and other problems in urban construction of arid region. Old urban block of Kashgar and typical block of Masdar ecological city of Abu Dhabi are taken as the research objects. Based on summarizing the characteristics of traditional block and newly built ecological block in arid region,comparative analysis on their space forms and environmental designs is conducted,and the association mechanism between ecological adaptability and space form is generalized. From the aspects of block layout,block space,open space and architectural form,ecological design strategy of the block in arid region is proposed,which could provide the reference for development and construction of ecological city in arid region of China.

关键词： Arid region Aho block Masdar ecological city Block Ecological design

Cerium Methacrylate Assisted Preparation of Highly Thermally Conductive and Anticorrosive Multifunctional Coatings for Heat Conduction Metals Protection

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纳微快报:英文版 2023年第11期15卷 172-184页

作者： Fei Xu Peng Ye Jianwen Peng Haolei Geng Yexiang Cui Di Bao Renjie Lu Hongyu Zhu Yanji Zhu Huaiyuan Wang School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350People’s Republic of China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192People’s Republic of China tianjin Key Lab Composite&Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin 300072People’s Republic of China State Key Laboratory of Chemical Engineering and Collaborative innovation Center of Chemical Science and Engineering(tianjin) Tianjin UniversityTianjin 300072People’s Republic of China tianjin Key Laboratory of Chemical Process Safety and Equipment Technology Tianjin UniversityTianjin 300072People’s Republic of China

Preparing polymeric coatings with well corrosion resistance and high thermal conductivity(TC)to prolong operational life and ensure service reliability of heat conductive metallic materials has long been a substantive and urgent need while a difficult *** we report a multifunctional epoxy composite coating(F-CB/CEP)by synthesizing cerium methacrylate and ingeniously using it as a novel curing agent with corrosion inhibit for epoxy resin and modifier for boron nitride through"cation-π"*** prepared F-CB/CEP coating presents a high TC of 4.29 W m^(−1)K^(−1),which is much higher than other reported anti-corrosion polymer coatings and thereby endowing metal materials coated by this coating with outstanding thermal management performance compared with those coated by pure epoxy ***,the low-frequency impedance remains at 5.1×10^(11)Ωcm^(2)even after 181 days of immersion in 3.5 wt%NaCl ***,the coating also exhibits well hydrophobicity,self-cleaning properties,temperature resistance and *** work provides valuable insights for the preparation of high-performance composite coatings with potential to be used as advanced multifunctional thermal management materials,especially for heat conduction metals protection.

关键词： Epoxy coatings Thermal conductivity Anti-corrosion Hydrophobicity Cerium methacrylate