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Response of North Pacific and North Atlantic decadal variability to weak global warming

Advances in Climate Change Research 2018年第2期9卷 95-101页

作者： WU Sheng liu zheng-yu CHENG Jun LI Chun Laboratory for Climate and Ocean-Atmosphere Studies (LaCOAS) and Department of Atmospheric and Oceanic Sciences School of Physics Peking University Beijing 100871 China Atmospheric Science Program Department of Geography Ohio State University Columbus 43210 USA Key Laboratory of Meteorological Disaster Ministry of Education (KLME)/Joint International Research Laboratory of Climate and Environment Chenge (ILCEC) Climate Dynamics Research Center Nunjing University of Information Science and Technology Nunjing 210044 China Physical Oceanography Lab Ocean University of China Qingdao 266100 China

The Pacific Decadal Oscillation （PDO） and the Atlantic Multidecadal Variability （AMV） are the two dominant low-frequency modes in the climate system. This research focused on the response of these two modes under weak global warming. Observational data were derived from the Hadley Center Sea Ice and Sea Surface Temperature dataset （HadISST） and coupled model outputs from the Coupled Model Intercomparison Project Phase 5 （CMIP5）. Changes in PDO and AMV were examined using four models （bcc-csml-1, CCSM4, IPSL-CM5A-LR, and MPI- ESM-LR） with long weak global warming scenarios （RCP2.6）. These models captured the two low-frequency modes in both pre-industrial run and RCP2.6 run. Under weak global warming, the time scales of PDO and AMV significantly decreased while the amplitude only slightly decreased. Interestingly, the standard deviation of the North Pacific sea surface temperature anomaly （SSTA） decreased only in decadal time scale, and that of the North Atlantic SSTA decreased both in interannual and decadal time scales. The coupled system consists of a slow ocean component, which has a decadal time scale, and a fast atmospheric component, which is calculated by subtracting the decadal from the total. Results suggest that under global warming, PDO change is dominated by ocean dynamics, and AMV change is dominated by ocean dynamics and stochastic atmosphere forcing.

关键词： Pacific decadal oscillation Atlantic multidecadal variability RCP2.6

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Identification of novel genes associated with duck OASL in response to influenza A virus

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Journal of Integrative Agriculture 2019年第7期18卷 1451-1459页

作者： WANG Xiao-xue LU Chang RONG En-guang HU Jia-xiang XING Yan-ling liu zheng-yu GAO Chu-ze liu Jin-hua HUANG Yin-hua State Key Laboratory of Agrobiotechnology China Agricultural UniversityBeijing 100193P.R. China Key Laboratory of Animal Epidemiology and Zoonosis Ministry of Agriculture/College of Veterinary MedicineChina Agricultural UniversityBeijing 100193P.R.China

2′-5′-Oligoadenylate synthetase like protein(OASL) plays a key role in response to viral infections through selectively activating the OAS/RNase L or OASL/RIG-I signaling *** classic pathway of OASL is well-known,its regulated genes or co-actors are largely *** study the possible molecular mechanism of duck OASL(dOASL),we performed RNA-sequencing(RNA-seq) and immunoprecipitation and mass spectrometry(IP-MS) at the level of mRNA and protein,*** RNA-seq,we used DF1 cell lines(DF1 dO ASL+/+,DF1 cO ASL–/–,and DF1) with or without the CK/0513 H5 N1 virus(A/chicken/huabei/0513/2007) infection.1 737 differentially expressed genes(DEGs) were identified as candidate target genes regulated by *** Ontology(GO),Kyoto Encyclopedia of Genes and Genomes(KEGG) analysis and Weighted Correlation Network Analysis(WGCNA) were *** identified one important yellow co-expression module correlated with antiviral immune *** this module,Ankyrin repeat and FYVE domain containing 1(ANKFY1),harboring a BTB domain similar to the methyl CpG-binding protein 1(MBD1) which bound to OASL in human,was regulated by *** protein level,133 host proteins were ***,ANKFY1 was one of them binding to dOASL *** phylogenomic and chromosomal syntenic analysis demonstrated MBD1 was absent in birds,while mammals *** is suggested that OASL-ANKFY1 interaction might act as a compensatory mechanism to regulate gene expression in *** findings will provide a useful resource for the molecular mechanism research of dOASL.

关键词： duck OASL ANKFY1 compensatory mechanism influenza A virus

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Two Preparation Methods-dominated Cd^(Ⅱ)-Based Coordination Polymers with Mixed Adenine Nucleobase and 5-Nitroisophathalate Ligands: Synthesis, Structure and Fluorescence

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Chinese Journal of Structural Chemistry 2019年第4期38卷 613-620页

作者： liu zheng-yu FU Min WANG Xiu-Guang WANG Li-Li YANG En-Cui ZHAO Xiao-Jun College of Chemistry Key Laboratory of Inorganic-Organic Hybrid Functional Material ChemistryMinistry of Education Tianjin Key Laboratory of Structure and Performance for Functional Molecules Tianjin Normal University

Two new CdⅡ-based coordination polymers(CPs) with mixed adenine(Hade) nucleobase and 5-nitroisophathalate(nip) ligands, {[Cd(Hade)_(0.5)(H_2O)_2(nip)]·H_2O}n 1 and {[Cd(Hade)(H_2O)_(1.25)(CH_3OH)0.75(nip)]·0.75 CH_3OH·0.5H_2 O}_n 2, were successfully obtained by varying the preparation methods and structurally characterized. Crystal data for 1: monoclinic, C2/c space group with a = 10.5546(6), b = 17.3496(6), c = 16.1198(9) ?, β = 104.2800(10)o, V = 2860.6(2) ?3, Dc = 2.058 g/cm^3, Mr = 443.13, Z = 8, F(000) = 1752, μ = 1.585 mm^(–1), the final R = 0.0394 and wR = 0.1109 for 2285 observed reflections with I > 2σ(I). For 2: triclinic, P1 space group with a = 10.2032(7), b = 10.5098(8), c = 11.0223(8) ?, a = 65.7050(10)o, β = 74.5750(10)o, g = 61.5280(10)o, V = 943.38(12) ?~3, Dc = 1.888 g/cm3, Mr = 536.24, Z = 2, F(000) = 537, μ = 1.225 mm^(–1), the final R = 0.0225 and wR = 0.0702 for 3143 observed reflections with I > 2σ(I). 1 presents a crisscrossed layer with mutually orthogonal {Cd(nip)} chains aggregated by neutral m-N(7),N(9)-Hade connector. By contrast, 2 displays a linear chain with CdⅡ ions extended by bis-bidentate chelating-nip2–connectors, which are further assembled into a broad ribbon by N-H···N hydrogen-bonding interactions. Additionally, the two solid-state samples with comparable thermal stability exhibit favorable luminescent emissions at room temperature, suggesting their potential applications as fluorescence materials.

关键词： adenine nucleobase coordination polymer crystal structure fluorescence

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Influence of introducing Zr,Ti,Nb and Ce elements on externally solidified crystals and mechanical properties of high-pressure die-casting Al–Si alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 147-153页

作者： Junjie Li Wenbo yu Zhenyu Sun Weichen zheng Liangwei Zhang Yanling Xue Wenning liu Shoumei Xiong Center of Materials Science and Engineering School of Mechanical and Electronic Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Traffic&Transportation Engineering Central South UniversityChangsha 410075China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

High pressure die casting(HPDC)AlSi10Mn Mg alloy castings are widely used in the automobile *** can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress arouses the deformation of large integrated ***,the development of non-heat treatment Al alloys is becoming the hot *** addition,HPDC contains externally solidified crystals(ESCs),which are detrimental to the mechanical properties of *** achieve high strength and toughness of non-heat treatment die-casting Al-Si alloy,we used AlSi9Mn alloy as matrix with the introduction of Zr,Ti,Nb,and *** influences on ESCs and mechanical properties were systematically investigated through three-dimensional reconstruction and thermodynamic *** results reveal that the addition of Ti increased ESCs'size and porosity,while the introduction of Nb refined ESCs and decreased ***,large-sized Al_3(Zr,Ti)phases formed and degraded the mechanical *** introduction of Ce resulted in the poisoning effect and reduced mechanical properties.

关键词： aluminium alloy high-pressure die-casting externally solidified crystals non-heat treatment

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Applied Research of IoV in Insurance Industry

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Computer Aided Drafting,Design and Manufacturing 2014年第2期24卷 54-59页

作者： BI Xiang liu zheng-yu liu Ning-bo ZHANG Li School of Computer and Information Heifei University of Technology Engineering Research Center of Safety-critical Industry Measure and Control Technology of Ministry of Education School of Machinery and Automobile Engineering Hefei University of Technology

A vehicle intelligent terminal is designed to collect vehicle state information and driver behavior information based on the application of Internet of Vehicle in the insurance industry, and data of 12 risk factors affecting the traffic safety is extracted from the information. The Principal Component Analysis is improved and PCA based on the index significant priority is proposed, using which the data of risk factors is processed and 3 principal components are obtained as the pricing factor of the insurance industry.

关键词： IoV(internet of vehicle) insurance industry vehicle intelligent terminal PCA index significant priority pricing factor

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层结稳定性“豁口”与北太平洋副热带中部模态水形成机制

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地球物理学报 2008年第1期51卷 77-87页

作者：潘爱军刘秦玉刘征宁中国海洋大学物理海洋教育部重点实验室青岛266003 国家海洋局第三海洋研究所环境动力室厦门361005 Center for Climate Research University of Wisconsin-Madison WI 53706-1695 USA

本文首先指出北太平洋副热带中部模态水(简称中部模态水)的形成具有显著的"局地"特征,其形成海区在(165°E^160°W,38°N^42°N)区间.海气通量分析表明单纯的外部大气强迫场(太阳短波辐射、净热通量和风应力旋度)不能解释中部模态水形... 详细信息

本文首先指出北太平洋副热带中部模态水(简称中部模态水)的形成具有显著的"局地"特征,其形成海区在(165°E^160°W,38°N^42°N)区间.海气通量分析表明单纯的外部大气强迫场(太阳短波辐射、净热通量和风应力旋度)不能解释中部模态水形成海区的"局地"性;进一步对上层海洋层结季节变化特征的分析发现秋季(9~10月)在北太平洋中部上层海洋(<75m)(165°E^160°W,38°N^42°N)区间存在特殊的浮力频率低值区——层结稳定性"豁口".该层结稳定性"豁口"作为"预条件(Precondition Mechanism)"机制对中部模态水形成的"局地"特征给出了合理的解释.在上述研究的基础上,基于一个上层海洋混合层热平衡方程,通过诊断分析揭示该层结稳定性"豁口"是由海表热力强迫、垂向挟卷、Ekman平流和地转平流效应共同导致的,"豁口"东、西边界的确定直接或间接地取决于海表热力强迫、Ekman冷平流和地转暖平流的纬向分布差异.

关键词：北太平洋模态水海洋层结海洋平流层结稳定性“豁口”

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Design of Lower Limbs Powered Exoskeleton

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Computer Aided Drafting,Design and Manufacturing 2015年第4期25卷 48-51页

作者： zheng yu-fei liu zheng-yu WU Zhuang ZHAO Jian-tao ZHANG Li School of Machinery and Automobile Engineering He Fei University of Technology Engineering Research Center of Safety-Critical Industry Measure and Control Technology of Ministry of Education

In order to lighten the burden of health care workers and help people with Lower limb insufficiency to do rehabilitation training, this paper designs a model named exoskeletons rehabilitation robot to simulate the human gait, including exoskeletons and scooter structure, and designs the driver module. Finally, this paper uses Workbench software to do the stress and strain analysis, which validates the reliability of the whole design.

关键词： exoskeleton adjustable design stepper motor finite element analysis

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The role of axon guidance molecules in the pathogenesis of epilepsy

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Neural Regeneration Research 2025年第5期20卷 1244-1257页

作者： zheng liu Chunhua Pan Hao Huang Department of Neurology Affiliated Hospital of Zunyi Medical UniversityZunyiGuizhou ProvinceChina

Current treatments for epilepsy can only manage the symptoms of the condition but cannot alter the initial onset or halt the progression of the disease. Consequently, it is crucial to identify drugs that can target novel cellular and molecular mechanisms and mechanisms of action. Increasing evidence suggests that axon guidance molecules play a role in the structural and functional modifications of neural networks and that the dysregulation of these molecules is associated with epilepsy susceptibility. In this review, we discuss the essential role of axon guidance molecules in neuronal activity in patients with epilepsy as well as the impact of these molecules on synaptic plasticity and brain tissue remodeling. Furthermore, we examine the relationship between axon guidance molecules and neuroinflammation, as well as the structural changes in specific brain regions that contribute to the development of epilepsy. Ample evidence indicates that axon guidance molecules, including semaphorins and ephrins, play a fundamental role in guiding axon growth and the establishment of synaptic connections. Deviations in their expression or function can disrupt neuronal connections, ultimately leading to epileptic seizures. The remodeling of neural networks is a significant characteristic of epilepsy, with axon guidance molecules playing a role in the dynamic reorganization of neural circuits. This, in turn, affects synapse formation and elimination. Dysregulation of these molecules can upset the delicate balance between excitation and inhibition within a neural network, thereby increasing the risk of overexcitation and the development of epilepsy. Inflammatory signals can regulate the expression and function of axon guidance molecules, thus influencing axonal growth, axon orientation, and synaptic plasticity. The dysregulation of neuroinflammation can intensify neuronal dysfunction and contribute to the occurrence of epilepsy. This review delves into the mechanisms associated with

关键词： axon guidance drug-resistant epilepsy epilepsy nerve regeneration nervous system diseases neural pathways neuroinflammatory diseases neuronal plasticity neurons synaptic remodeling

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Electro-mechanical Braking Method in Hybrid Electric Vehicles Based on Feedback Control Theory

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Computer Aided Drafting,Design and Manufacturing 2014年第1期24卷 55-59页

作者： ZHANG Li yu Jun-quan liu zheng-yu CHANG Cheng School of Machinery and Automobile Engineering Hefei University of Technology Engineering Research Center of Safety Critical Industry Measurement and Control Technology Ministry of Education ATECH Automotive Wuhu Co. Ltd

In this paper, the hybrid electric vehicle braking process is researched, by using variables consists of HEV speed, motor speed, and state of charge established, fimctions of mechanical braking force, regenerative braking force and efficiency of energy recovery are constructed, and the control goal is to maximization the energy recovery efficiency. Under the feedback control strategy, with the constrain condition of braking strength and braking stability, combining experiments in ADVISOR, in different experiments of different working conditions, we can see that in UDDS Cycle, the regenerative braking efficiency is the best. What＇s more, compared with strategies in ADVISOR, strategy proposed in this paper is obviously better.

关键词： hybrid electrical vehicle feedback control regenerative braking efficiency ADVISOR

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Nanograting‑Based Dynamic Structural Colors Using Heterogeneous Materials

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Nano-Micro Letters 2025年第3期17卷 138-151页

作者： Jingang Wang Haibo yu Jianchen zheng yuzhao Zhang Hongji Guo Ye Qiu Xiaoduo Wang Yongliang Yang Lianqing liu State Key Laboratory of Robotics Shenyang Institute of AutomationChinese Academy of SciencesShenyang 110016People’s Republic of China University of Chinese Academy of Sciences Beijing 100049People’s Republic of China

Dynamic structuralcolors can change in response todifferent environmental *** ability remains effectiveeven when the size of the speciesresponsible for the structural coloris reduced to a few micrometers,providing a promising sensingmechanism for solving microenvironmentalsensing problems inmicro-robotics and ***, the lack of dynamicstructural colors that can encoderapidly, easily integrate, and accuratelyreflect changes in physical quantities hinders their use in microscale sensing applications. Herein, we present a 2.5-dimensionaldynamic structural color based on nanogratings of heterogeneous materials, which were obtained by interweaving a pH-responsive hydrogelwith an IP-L photoresist. Transverse gratings printed with pH-responsive hydrogels elongated the period of longitudinal grating in the swollenstate, resulting in pH-tuned structural colors at a 45° incidence. Moreover, the patterned encoding and array printing of dynamic structuralcolors were achieved using grayscale stripe images to accurately encode the periods and heights of the nanogrid structures. Overall, dynamicstructural color networks exhibit promising potential for applications in information encryption and in situ sensing for microfluidic chips.

关键词： Dynamic structural colors Four-dimensional printing pH-responsive Nanogrid Heterogeneous materials

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