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Regeneration patterns and drivers of different underutilized lands in the rust belt city of developing country:An empirical case study for Northeast China

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Journal of Geographical Sciences 2023年第7期33卷 1377-1396页

作者： li wenbo li Han YAN Zhuoran HU Bingqing ZHU Yuanli YANG Yuewen WANG Dongyan College of Earth Sciences Jilin UniversityChangchun 130061China School of Public Policy and Management China University of Mining and TechnologyXuzhou 221116JiangsuChina

Rust belt cities are largely threatened by a waste of urban space at their core;however,in developing countries where land resources are widely used as instruments for macroeconomic stabilization,urban periphery is also at risk of being underutilized due to land *** geographic differences entail new knowledge about how,where,and why underutilized lands are regenerated in the ***,rapid urban growth imposes development disparity and mixed underutilization issues on cities in developing countries;therefore,how the geo-information obtained by the regeneration of different underutilized lands differs will be valuable for urban planners and policymakers to make prudent *** fill these gaps,we conducted a sequential investigation into the regeneration of underutilized lands in a representative rust belt city – Changchun City in Northeast China,in an attempt to measure the regeneration pattern and analyze the underlying determinants using the Classification and Regression Trees *** results indicated that,of all underutilized lands,increments of vacant lot and remnant cultivated land continued to plague the expanding urban periphery during 2016–*** a way,reduced underutilized lands alleviated land use conflicts at the city *** 23% of the underutilized areas had been regenerated,dominated by realty development,with most converted to residential lands,ecological lands and industrial *** the contrary,conversion to transportation lands and parking lots seemed to avoid the rapidly expanding *** regeneration rates in a certain area can be increased by a multitude of factors,including denser,simply structured land underutilization,abundant ecosystem services nearby and accessibility to public *** conditions such as residential density and accessibility may have fueled the regeneration associated with residential purposes,while regeneration of industrial development was closely associated with the under

关键词： land underutilization spatial-statistical analysis driving mechanism developing country rust belt of Northeast China

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Towards Human‑Vehicle Interaction: Driving Risk Analysis Under Different Driver Vigilance States and Driving Risk Detection Method

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Automotive Innovation 2023年第1期6卷 32-47页

作者： Yingzhang Wu Jie Zhang wenbo li Yujing liu Chengmou li Bangbei Tang Gang Guo College of Mechanical and Vehicle Engineering Chongqing UniversityChongqing 400044China Chongqing Changan Automobile Corporation Ltd. Chongqing 401133China School of Vehicle and Mobility Tsinghua UniversityBeijing 100084China School of Intelligent Manufacturing Engineering Chongqing University of Arts and SciencesChongqing 402160China

The driver's behavior plays a crucial role in transportation *** is widely acknowledged that driver vigilance is a major contributor to traffic ***,the quantitative impact of driver vigilance on driving risk has yet to be fully *** study aims to investigate the relationship between driver vigilance and driving risk,using data recorded from 28 drivers who maintain a speed of 80 km/h on a monotonous highway for 2 *** k-means and linear fitting methods are used to analyze the driving risk distribution under different driver vigilance ***,this study proposes a research framework for analyzing driving risk and develops three classification models(KNN,SVM,and DNN)to recognize the driving risk *** results show that the frequency of low-risk incidents is negatively correlated with the driver's vigilance level,whereas the frequency of moderate-risk and high-risk incidents is positively correlated with the driver's vigilance *** DNN model performs the best,achieving an accuracy of 0.972,recall of 0.972,precision of 0.973,and f1-score of 0.972,compared to KNN and *** research could serve as a valuable reference for the design of warning systems and intelligent vehicles.

关键词： Driving risk Driver vigilance Driving risk detection Human–machine interaction Deep Neural Network

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Effect of low-frequency oscillation on performance of Hall thrusters

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Plasma Science and Technology 2018年第7期20卷 139-144页

作者： liqiu WEI wenbo li Yongjie DING Daren YU Lab of Plasma Propulsion Harbin Institute of Technology（HIT）Harbin 150001People＇s Republic of China Lab of Electric Drive ＆ Propulsion Technology Harbin Institute of Technology（HIT）Harbin 150001People＇s Republic of China

In this paper, a direct connection between the discharge current amplitude and the thruster performance is established by varying solely the capacitance of the filter unit of the Hall thrusters. To be precise, the variation characteristics of ion current, propellant utilization efficiency, and divergence angle of plume at different low-frequency oscillation amplitudes are measured. The findings demonstrate that in the case of the propellant in the discharge channel just meets or falls below the full ionization condition, the increase of low-frequency oscillation amplitude can significantly enhance the ionization degree of the neutral gas in the channel and increase the thrust and anode efficiency of thruster. On the contrary, the increase in the amplitude of low-frequency oscillation will lead to increase the loss of plume divergence, therefore the thrust and anode efficiency of thruster decrease.

关键词： Hall thruster low-frequency oscillation performance filter

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Magnetic levitation using diamagnetism:Mechanism,applications and prospects

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Science China(Technological Sciences) 2021年第1期64卷 44-58页

作者： GAO QiuHua YAN Han ZOU HongXiang li wenbo PENG ZhiKe MENG Guang ZHANG WenMing State Key Laboratory of Mechanical System and Vibration School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

As a typical contact-free manipulation technique that removes friction and contamination risk,levitation has gradually become a preferred candidate for various *** levitation using diamagnetism,beyond Earnshaw’s theorem,is a kind of passive stable levitation that can be achieved at normal temperatures with no energy ***,most seemingly nonmagnetic materials can be levitated in a magnetic field and can stabilize free levitation of magnetic *** review focuses on the fundamental principles of magnetic levitation using diamagnetism,with emphasis on its burgeoning *** theoretical basis associated with the magnetic levitation using diamagnetism is discussed by elucidating the characteristics of diamagnetic materials,and the key levitation mechanisms are ***,state-of-the-art applications in various aspects,including sensing and measurement,actuating and micromanipulation,energy harvesting and magnetic gravity compensation,are summarized and ***,the review concludes with a brief outlook on future perspectives.

关键词： magnetic levitation diamagnetism sensors actuators energy harvesters

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A Bi-Functional Xyloglucan Galactosyltransferase Is an Indispensable Salt Stress Tolerance Determinant in Arabidopsis

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Molecular Plant 2013年第4期6卷 1344-1354页

作者： wenbo li Qingmei Guan Zhen-Yu Wang Yingdian Wang Jianhua Zhu College of life Sciences Beijing Normal University Beijing 100875 China Department of Plant Science and Landscape Architecture University of Maryland College Park MD 20742 USA Center for Plant Stress Genomics and Technology King Abdullah University of Science and Technology Thuwal 23955-6900 Kingdom of Saudi Arabia

Salinity is an abiotic stress that substantially limits crop production worldwide. To identify salt stress tolerance determinants, we screened for Arabidopsis mutants that are hypersensitive to salt stress and designated these mutants as short root in salt medium （rsa）. One of these mutants, rsa3-1, is hypersensitive to NaCI and liCI but not to CsCI or to general osmotic stress. Reactive oxygen species （ROS） over-accumulate in rsa3-1 plants under salt stress. Gene expression profiling with Affymetrix microarray analysis revealed that RSA3 controls expression of many genes including genes encoding proteins for ROS detoxification under salt stress. Map-based cloning showed that RSA3 encodes a xyloglucan galactosyltransferase, which is allelic to a gene previously named MUR3/KAM1. The RSA3/ MUR3/KAMl-encoded xylogluscan galactosyltransferase regulates actin microfilament organization （and thereby con- tributes to endomembrane distribution） and is also involved in cell wall biosynthesis. In rsa3-1, actin cannot assemble and form bundles as it does in the wild-type but instead aggregates in the cytoplasm. Furthermore, addition of phal- Ioidin, which prevents actin depolymerization, can rescue salt hypersensitivity of rsa3-1. Together, these results sug- gest that RSA3/MUR3/KAM1 along with other cell wall-associated proteins plays a critical role in salt stress tolerance by maintaining the proper organization of actin microfilaments in order to minimize damage caused by excessive ROS.

关键词： salt stress tolerance xyloglucan galactosyltransferase endomembranes actin microfilaments RSA3.

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Investigation of the cross-reaction mechanism of C_6H_5F-HNO_2 aqueous solution irradiated at 355 nm by transient absorbance spectrum technique

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Chinese Science Bulletin 2008年第7期53卷 998-1003页

作者： ZHANG RenXi SHEN Yan li Ping HUANG li DONG wenbo HOU HuiQi Institute of Environmental Science Fudan University Shanghai 200433 China

The transient absorption spectrum technique was employed to investigate the cross-reaction mecha-nism of C6H5F-HNO2 aqueous solution irradiated at 355 nm. The characteristic and the kinetic parame-ters of transient species were also detected. Hydroxyl radical derived from the photolysis of HNO2 was added to monofluorobenzene with a second-order rate constant of (5.83±0.17)×109 L·mol-1·s-1 to form an adduct, C6H5F···OH, which was able to react with HNO2 as the main reaction pathway with a rate constant of (8.3±0.1)×107 L·mol-1·s-1. The C6F6···OH adduct can also be decayed by elimination of H2O to yield monofluorophenyl radical C6H4F·. By GC-MS technique, the final products were identified to be monofluorophenol, nitro-monofluorobenzene, nitro-monofluorophenol and para-fluorobiphenyl.

关键词：溶液作用瞬变现象吸收率光谱学

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Real-time effects of nicotine exposure and withdrawal on neurotransmitter metabolism of hippocampal neuronal cells by microfluidic chip-coupled LC-MS

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Chinese Chemical Letters 2022年第6期33卷 3101-3105页

作者： Zhiyu Chen Lei Fu Xin-An liu Zhiyi Yang wenbo li Fang li Qian Luo Institute of Biomedical and Health Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China Shenzhen Engineering Laboratory of Single-molecule Detection and Instrument Development Shenzhen 518055China Guangdong Provincial Key Laboratory of Brain Connectome and Behavior CAS Key Laboratory of Brain Connectome and Manipulationthe Brain Cognition and Brain Disease Institute(BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research InstitutionsShenzhen 518055China

Nicotine ingested from smoking exerts neuroprotection and developmental neurotoxicity in central nervous *** can produce several changes of cognitive behaviors through regulating the release of different neurotransmitters in the ***,the effects of nicotine exposure or withdrawal on neurotransmitter metabolism of hippocampus are still *** this study,we real-time evaluated the dynamic alterations in neurotransmitter metabolism of hippocampal neuronal(HT22)cells induced by nicotine exposure and withdrawal at relevant exposure levels of smoking and secondhand smoke by using a microfluidic chip-coupled with liquid chromatography-mass spectrometry(MC-LC-MS)*** found HT22 cells mainly released related neurotransmitters of tryptophan and choline metabolism,both nicotine exposure and withdraw altered its neurotransmitters and their metabolites *** to nicotine mainly altered the secretion of serotonin,kynurenic acid,choline and acetylcholine of HT22 cells to improve hippocampal dependent cognition,and the change are closely related to the dose and duration of ***,the altered metabolites could rapidly recover after nicotine withdrawal,but picolinic acid was ***-LC-MS system used in present study showed a greater advantage to detect unstable metabolites than conventional method by using in vitro model,and the results of dynamic alterations of neurotransmitter metabolism induced by nicotine might provide a potential targets for drug development of neuroprotection or cognitive improvement.

关键词： Nicotine Microfluidic chip-coupled LC-MS Hippocampal neuronal cells Neurotransmitter metabolism Cognition

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Palladium/Xu-Phos-catalyzed enantioselective arylalkoxylation reaction ofγ-hydroxyalkenes at room temperature

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Chinese Chemical Letters 2024年第11期35卷 355-360页

作者： Shuai Zhu Mingjie Chen Haichao Shen Hanming Ding wenbo li Junliang Zhang State Key Laboratory of Petroleum Molecular&Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai 200062China School of Chemistry and Molecular Engineering East China Normal UniversityShanghai 200241China Department of Chemistry Fudan UniversityShanghai 200438China

Metal-catalyzed alkene arylalkoxylation is a powerful complexity-building strategy for the synthesis of oxygen heterocycles from simpleγ-unsaturated alcohols,but only a few examples of catalytic enantioselective methods ***,an efficient palladium-catalyzed enantioselective arylalkoxylation ofγ-hydroxyalkenes with aryl halides is *** salient features of this transformation include a remarkable broad substrate scope,mild reaction conditions,and good functional group tolerance,delivering a series of chiral tetrahydrofurans containing a tertiary or quaternary stereocenter in good yields with up to 95%*** Xu10 ligand with a suitable side-arm was responsible for the high reactivity and good enantioselectivity of this transformation.

关键词： Palladium-catalysis Xu-Phos Enantioselective Arylalkoxylation γ-Hydroxyalkenes

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Size-controlled flow synthesis of metal-organic frameworks crystals monitored by in-situ ultraviolet-visible absorption spectroscopy

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Chinese Chemical Letters 2021年第3期32卷 1131-1134页

作者： wenbo li Yucen li Wei Zhang Difeng Yin Ya Cheng Wei Chu Ming Hu State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science Shanghai Institute of Optics and Fine Mechanics(SIOM)Chinese Academy of Sciences(CAS)Shanghai 201800China School of Physical Science and Technology ShanghaiTech UniversityShanghai 200031China State Key Laboratory of Precision Spectroscopy School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China XXL-The Extreme Optoelectromechanics Laboratory School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China University of Chinese Academy of Sciences Beijing 100049China

Size-controlled flow synthesis of nanoporous particles are of considerable interest for future industrial applications,however,is facing challenges due to lack of in-situ method for size-characterization in fluidic *** present that ultraviolet-visible(UV-vis)absorption spectroscopy can be integrated into a flow-synthesis system which was produced by femtosecond laser micro *** shift of the absorption peak position of the ex-situ and in-situ UV-vis spectra correlates to variation of size of porous metal-organic frameworks ***-67 crystals with a size in the range from 200 nm to1025 nm are fabricated with the assistance of tri-ethylamine under monitoring of in-situ UV-vis *** ZIF-67 crystals are converted into nanoporous carbons particles with controlled *** materials show size-dependent performance in Na-ion battery and size-independent performance in metal/H_(2)O seawater battery.

关键词： Nanoporous particles Microfluidics Flow synthesis Metal-organic frameworks UV-vis absorption spectrum Femtosecond laser micromachining

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Review and Perspectives on Human Emotion for Connected Automated Vehicles

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Automotive Innovation 2024年第1期7卷 4-44页

作者： wenbo li Guofa li Ruichen Tan Cong Wang Zemin Sun Ying li Gang Guo Dongpu Cao Keqiang li School of Vehicle and Mobility Tsinghua University30 Shuangqing RdBeijing 100084China College of Mechanical and Vehicle Engineering Chongqing University174 Shazheng RdChongqing 400044China College of Computer Science and Technology Jilin University2699 Qianjin RdChangchun 130012China School of Mechanical Engineering Beijing Institute of Technology5 Zhongguancun South RdBeijing 100081China Lyles School of Civil Engineering Purdue University550 Stadium Mall DriveWest LafayetteIN 47907USA

The progression toward automated driving and the latest advancement in vehicular networking have led to novel and natural human-vehicle-road systems,in which affective human-vehicle interaction is a crucial factor affecting the acceptance,safety,comfort,and traffic efficiency of connected and automated vehicles(CAVs).This development has inspired increasing inter-est in how to develop affective interaction framework for intelligent cockpit in *** enable affective human-vehicle interactions in CAVs,knowledge from multiple research areas is needed,including automotive engineering,transportation engineering,human-machine interaction,computer science,communication,as well as industrial ***,there is currently no systematic survey considering the close relationship between human-vehicle-road and human emotion in the human-vehicle-road coupling process in the CAV *** facilitate progress in this area,this paper provides a comprehensive literature survey on emotion-related studies from multi-aspects for better design of affective interaction in intelligent cockpit for *** paper discusses the multimodal expression of human emotions,investigates the human emotion experiment in driving,and particularly emphasizes previous knowledge on human emotion detection,regulation,as well as their applications in *** promising research perspectives are outlined for researchers and engineers from different research areas to develop CAVs with better acceptance,safety,comfort,and enjoyment for users.

关键词： Intelligent vehicles Intelligent cockpit Human-machine interaction Emotion recognition Emotion regulation

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