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Acta Oceanologica Sinica 2022年第8期41卷 31-40页

作者： haoyu li Qisheng Tang Yao Sun College of the Environment and Ecology Xiamen UniversityXiamen 361102China Yellow Sea Fisheries Research Institute Chinese Academy of Fishery SciencesQingdao 266071China

Quantitative identification of long-term changes in the abundance of Japanese anchovy(Engraulis japonicus)in the Yellow Sea is particularly important for understanding evolutionary processes of the Yellow Sea ecosystem.Unfortunately,the driving mechanisms of climate variability on the anchovy are still unclear due to the lack of long-term observational data.In this study,we used the fish scale deposition rate in the central Yellow Sea to reconstruct the time series of the anchovy stock over the past 400 a.On this basis,we further explored the impacts of the Pacific Decadal Oscillation(PDO)on the anchovy.Our results show that the anchovy stock is positively correlated with the PDO on a decadal time scale.In addition,anchovy abundance was relatively high during1620–1860 AD(the little Ice Age,liA),though in a state of constant fluctuation;anchovy abundance maintained at a relatively low level after~1860 AD.In particular,followed by overfishing since the 1980 s,the anchovy stock has declined sharply.Based on these findings,we infer that fluctuations of the anchovy stock may be regulated by basin-scale“atmosphere–ocean”interactions.Nevertheless,the role of overfishing should not be ignored.

关键词： Japanese anchovy scale deposition rate population fluctuation Pacific Decadal Oscillation Yellow Sea

A hybrid method for product low-end disruptive innovation

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Frontiers of Mechanical Engineering 2022年第3期17卷 159-176页

作者： Yu WANG Runhua TAN Qingjin PENG Jianguang SUN haoyu li Fei YU School of Mechanical Engineering Hebei University of TechnologyTianjin300401China National Engineering Research Center for Technological Innovation Method and Tool Hebei University of TechnologyTianjin300401China Department of Mechanical Engineering University of ManitobaWinnipegMBR3T 2N2Canada

Product innovation is often a process for improving existing products.Low-end disruptive innovation(LDI)enables a product to meet the most price-sensitive customers in the low-end market.The existing LDI methods are mainly based on unnecessary characteristics of disruptive innovations.Thus,they cannot easily identify and respond to the LDI design needs.This study proposes a hybrid method for the product LDI in two levels of the product design based on the summarized definition and essential characteristics of LDI.Feasible areas of the product LDI are determined using a hybrid relational function model to identify the maturity of dominant technologies.The technologies are identified through the technical search and evaluation of the feasible area for innovation to form an initial LDI scheme.Then,the product function is optimized using the trimming concept of theory of inventive problem solving based on the characteristics of LDI.The final LDI scheme is formed and evaluated based on the essential characteristics of the product LDI.The feasibility of the proposed method is verified in the design of a new dropping pill machine.

关键词： low-end disruptive innovation product design design improvement theory of inventive problem solving TRIZ trimming

Compact logic operator utilizing a single-layer metasurface

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Photonics Research 2022年第2期10卷 316-322页

作者： Zihan Zhao Yue Wang Xumin Ding haoyu li Jiahui Fu Kuang Zhang Shah Nawaz Burokur Qun Wu Advanced Microscopy and Instrumentation Research Center School of Instrumentation Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Department of Microwave Engineering Harbin Institute of TechnologyHarbin 150001China LEME UPLUniv Paris NanterreF92410 Ville d'AvrayFrance

In this paper, we design and demonstrate a compact logic operator based on a single-layer metasurface at microwave frequency. By mapping the nodes in the trained fully connected neural network(FCNN) to the specific unit cells with phase control function of the metasurface, a logic operator with only one hidden layer is physically realized. When the incident wave illuminates specific operating regions of the metasurface, corresponding unit cells are activated and can scatter the incident wave to two designated zones containing logical information in the output layer. The proposed metasurface logic operator is experimentally verified to achieve three basic logic operations(NOT, OR, and AND) under different input signals. Our design shows great application potential in compact optical systems, low-power consumption information transmission, and ultrafast wave-based full signal processing.

关键词： operator layer utilizing

Application of biocompatible custom ceria nanoparticles in improving the quality of liver grafts for transplantation

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Nano Research 2023年第4期16卷 5176-5188页

作者： Yinbiao Qiao Jianhui li Suchen Bian Chenyue Zhan Jia Luo li Jiang haoyu li Hao Wu Cheng Zhang Shusen Zheng Haiyang Xie Penghong Song Division of Hepatobiliary and Pancreatic Surgery Department of SurgeryThe First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China National Health Commission(NHC)Key Laboratory of Combined Multi-organ Transplantation Hangzhou 310003China Department of Hepatobiliary and Pancreatic Surgery Department of Liver TransplantationShulan(Hangzhou)HospitalZhejiang Shuren University School of MedicineHangzhou 310015China The Organ Repair and Regeneration Medicine Institute of Hangzhou Hangzhou 310003China

liver transplantation(LT),an ultimate and vital method for treating end-stage liver disease,is often accompanied by ischemiareperfusion injury(IRI)resulting from warm or cold ischemia of the donor liver.Organ protection techniques are used to improve the quality of liver grafts(from retrieval to implantation).Reactive oxygen species(ROS)cause oxidative stress,which is considered a crucial factor in IRI after LT.Nano antioxidants capable of scavenging ROS alleviate IRI in multiple types of organs and tissues.In this study,we synthesized ceria nanoparticles(NPs)with antioxidant properties using a pyrolysis method and covered them with phospholipid-polyethylene glycol to improve their biocompatibility in vivo.We investigated the potential organprotective effect of ceria NPs and the underlying mechanisms.Ceria NPs promoted liver function recovery after LT by attenuating IRI in liver grafts in vivo.The protective effect of ceria NPs on liver grafts was investigated by applying hypothermic oxygenated machine perfusion ex vivo.Ceria NPs attenuated hypoxia reoxygenation-or H_(2)O_(2)-induced hepatocyte injury by enhancing mitochondrial activity and ROS scavenging in vitro.These effects may be associated with the activation of the nuclear factor erythroid-derived 2-related factor 2(Nrf2)/Kelch-like ECH-associated protein 1(Keap1)/heme oxygenase 1(HO-1)signaling pathway.In conclusion,ceria NPs may serve as a promising antioxidant agent for the treatment of hepatic IRI after LT.

关键词： ceria nanoparticles liver transplantation hypothermic oxygenated machine perfusion(HOPE) ischemia-reperfusion injury(IRI) antioxidant

In-situ/operando characterization techniques in lithium-ion batteries and beyond

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Journal of Energy Chemistry 2021年第8期30卷 191-211,I0005页

作者： haoyu li Shaohua Guo Haoshen Zhou Center of Energy Storage Materials&Technology College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsNational Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructureNanjing UniversityNanjing 210093China Shenzhen Research Institute of Nanjing University Shenzhen 51800China National Institute of Advanced Industrial Science and Technology(AIST) Umezono 1-1-1TsukubaJapan

Nowadays,in-situ/operando characterization becomes one of the most powerful as well as available means to monitor intricate reactions and investigate energy-storage mechanisms within advanced batteries.The new applications and novel devices constructed in recent years are necessary to be reviewed for inspiring subsequent studies.Hence,we summarize the progress of in-situ/operando techniques employed in rechargeable batteries.The members of this large family are divided into three sections for introduction,including bulk material,electrolyte/electrode interface and gas evolution.In each part,various energy-storage systems are mentioned and the related experimental details as well as data analysis are discussed.The simultaneous strategies of various in-situ methods are highlighted as well.Finally,current challenges and potential solutions are concluded towards the rising influence and enlarged appliance of in-situ/operando techniques in the battery research.

关键词： In-situ/operando Characterization techniques Secondary batteries

Adaptive backstepping-based NTSM control for unmatched uncertain nonlinear systems

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Journal of Systems Engineering and Electronics 2015年第3期26卷 557-564页

作者： Xuemei Zheng Peng li haoyu li Danmei Ding Department of Electrical Engineering Harbin Institute of Technology

An adaptive backstepping-based non-singular termi- nal sliding mode （NTSM） control method is proposed for a class of uncertain nonlinear systems in the parameteric-strict feedback form. The adaptive control law is combined with the first n - 1 steps of the backstepping method to estimate the unknown pa- rameters of the system. In the nth step, an NTSM control strategy is utilized to drive the last state of the system to converge in a finite time. Furthermore, the derivate estimator is used to obtain the derivates of the states of the error system; the higher-order non-singular terminal sliding mode control （HONTSMC） law is de- signed to eliminate the chattering and make the system robust to both matched and unmatched uncertainties. Compared to the adaptive backstepping-based linear sliding mode control method （LSMC）, the proposed method improves the convergence rate and the steady-state tracking accuracy of the system, and makes the control signal smoother. Finally, the compared simulation results are presented to validate the method.

关键词： adaptive control backstepping terminal sliding mode,higher-order sliding mode control robustness.

台风结构与强度以及环境场对西北太平洋台风尺度估计的影响研究

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南京大学学报（自然科学版） 2024年第2期60卷 244-256页

作者：李好雨储可宽中尺度灾害性天气教育部重点实验室南京大学大气科学学院南京210023

台风风场径向廓线模型对台风灾害的评估以及台风尺度的研究具有重要的价值.利用西北太平洋2001-2020年的台风最佳路径观测数据,评估了目前国际上应用比较广泛的六个分别基于经验参数和物理过程的台风风场径向廓线模型对台风尺度(台风大... 详细信息

台风风场径向廓线模型对台风灾害的评估以及台风尺度的研究具有重要的价值.利用西北太平洋2001-2020年的台风最佳路径观测数据,评估了目前国际上应用比较广泛的六个分别基于经验参数和物理过程的台风风场径向廓线模型对台风尺度(台风大风半径,R17)的估计精度,并探讨了台风结构、强度等内部因素以及垂直风切变和移动速度等环境因子对模型精度的影响.评估发现,所有模型均高估了R17较小的台风而低估了R17较大的台风,且R17越小,高估越明显,R17越大,低估越严重.总体而言,Willoughby et al发展的基于参数的模型具有最小的估计偏差且与观测记录之间最高的相关性.研究还发现,台风内核尺度(最大风速半径,RMW)和强度(最大地面风速,V_(max))对不同模型的影响具有显著的差异性.此外,在高环境风切变和高移速条件下,模型的估计偏差的量级会显著增加.以上研究为进一步完善适用于不同环境条件下,不同结构与强度台风的风场模型提供参考.

关键词：台风尺度台风风场径向廓线模型垂直风切变台风移速

全龄友好导向下居住型街区更新的研究框架与规划应对

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规划师 2024年第1期40卷 34-41页

作者：姚之浩李昊昱苏州科技大学建筑与城市规划学院

现有居住型街区更新实践尚缺乏一个全龄友好的整体性框架来统筹社区发展的“社会—经济—空间”联动转型问题。回顾全球全龄友好型城市建设的兴起及在我国街区层面的实践,引入生命周期理论,构建一个“主体对象—更新要素”的居住型街区... 详细信息

现有居住型街区更新实践尚缺乏一个全龄友好的整体性框架来统筹社区发展的“社会—经济—空间”联动转型问题。回顾全球全龄友好型城市建设的兴起及在我国街区层面的实践,引入生命周期理论,构建一个“主体对象—更新要素”的居住型街区更新研究框架,探究街区更新的要素体系和实施路径。研究发现:时空环境、社会关联和个人能动是实现街区全龄友好的关键要素,更新实施可从经济和社会两个维度展开;街区更新的内容不仅包括物质空间更新,还包括活动营建和机制建设;存量型街区国土空间详细规划需重点关注居民需求画像、更新要素分类和行动指南制定。

关键词：全龄友好居住型街区生命周期理论城市更新规划应对

Pt overlayer for direct oxidation of CH_(4)to CH_(3)OH

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Chinese Chemical Letters 2023年第11期34卷 280-284页

作者： haoyu li Wei Pei Xiaowei Yang Si Zhou Jijun Zhao Key Laboratory of Materials Modification by Laser Ion and Electron Beams(Dalian University of Technology)Ministry of EducationDalian 116024China College of Physics Science and Technology Yangzhou UniversityYangzhou 225009China

Highly selective conversion of methane(CH_(4))to methanol(CH_(3)OH)is an emerging attractive but challenging process for future development of hydrogen economy,which requires efficient catalysts.Herein,we systematically explore the catalytic properties of Pt(111)overlayer on transition metal oxides(TMOs)for CH_(4) conversion by first principles calculations.The Pt(111)monolayer supported by Ce-terminated CeO_(2)(111)substrate exhibits high activity and selectivity for CH_(4) conversion to CH_(3)OH,with the kinetic barrier of rate-limiting step of 1.05 eV.Intriguingly,the surface activity of Pt overlayer is governed by its d-band center relative to the energy of bonding states of adsorbed molecules,which in turn depends on the number of charge transfer between Pt(111)monolayer and underlying TMOs substrates.These results provide useful insights in the design of metal overlayers as catalysts with high-ultra performance and atomic utilization.

关键词： CH_(4)conversion Pt(111)overlayer d-band center

Molecular behaviors in thin film lubrication——Part two: Direct observation of the molecular orientation near the solid surface

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Friction 2019年第5期7卷 479-488页

作者： Ming GAO haoyu li liran MA Yuan GAO linwei MA Jianbin LUO State Key Laboratory of Tribology Tsinghua UniversityBeijing100084China School of Metallurgy Engineering Xi’an University of Architecture and TechnologyXi’an710055China School of Materials Science and Engineering Tsinghua UniversityBeijing100084China

Over the past twenty years, thin film lubrication(TFL) theory has been used to characterize the molecular behaviors in lubrication films thinner than 100 nm, effectively bridging the gap between elastohydrodynamic lubrication and boundary lubrication. Unfortunately, to date, the TFL molecular model proposed in 1996 has not been directly proven by experimental detection. Herein, a method based on surface-enhanced Raman spectroscopy was developed to show both the packing and orienting of liquid molecules in the TFL regime. By trapping liquid crystal molecules between a structured silver surface and a glass surface, molecular ordering states dominated by shear effect and surface effect were successfully distinguished. A nanosandwich structure consisting of an adsorbed layer, an ordered-molecule layer, and a fluid layer was demonstrated. Molecule imaging in TFL was achieved. Our results illustrate the molecular behaviors and lubrication mechanism in nanoconfined films and facilitate the lubrication design of nanoelectromechanical and microelectromechanical systems.

关键词： thin film lubrication molecular behaviors nematic liquid crystal surface-enhanced Raman spectroscopy lubrication theory nanosandwich structure