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Impacts of High-Frequency Atmospheric Forcing on Southern OceanCirculation and Antarctic Sea Ice

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Advances in Atmospheric Sciences 2020年第5期37卷 515-531页

作者： Yang WU Zhaomin WANG Chengyan LIU and Xia LIN College of Oceanography Hohai UniversityNanjing 210098China Southern Marine Science and engineering guangdong Laboratory(Zhuhai) Zhuhai 519082China International Polar Environment Research Laboratory Hohai UniversityNanjing 210098China University corporation for Polar Research Beijing 100875China

The relative contributions of atmospheric fluctuations on 6 h?2 d,2?8 d,and 8 d?1 month time scales to the changes in the air?sea fluxes,the SO circulation,and Antarctic sea ice are *** was found that the imposed forcing variability on the three time scales creates a significant increase in wind power input,and hence an increase of about 50%,97%,and 5%of eddy kinetic energy relative to the simulation driven by monthly forcing,***,SO circulation and the strength of the upper cell of meridional overturning circulation become *** results indicate more dominant effects of atmospheric variability on the 2?8 d time scale on the SO ***,the 6 h?2 d(2?8 d)atmospheric variability causes an increase in the total sea-ice extent,area,and volume,by about 33%,30%,and 19%(17%,20%,and 25%),respectively,relative to those in the experiment forced by monthly atmospheric *** significant sea-ice increases are caused by a cooler ocean surface and stronger sea-ice transports owing to the enhanced heat losses and air-ice stresses induced by the atmospheric variability at 6 h?2 d and 2?8 d,while the effects of the variability at 8 d?1 month are rather *** influences of atmospheric variability found here mainly result from wind *** findings in this study indicate the importance of properly resolving high-frequency atmospheric variability in modeling studies.

关键词： high-frequency atmospheric variability momentum fluxes buoyancy fluxes Southern Ocean circula tion Antarctic sea ice MITgcm-ECCO2

Comparative genomics reveal shared genomic changes in syngnathid fishes and signatures of genetic convergence with placental mammals

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National Science Review 2020年第6期7卷 964-977页

作者： Yan-Hong Zhang Vydianathan Ravi Geng Qin He Dai Hui-Xian Zhang Feng-Ming Han Xin Wang Yu-Hong Liu Jian-Ping Yin Liang-Min Huang Byrappa Venkatesh Qiang Lin CAS Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of Oceanology Innovation Academy of South China Sea Ecology and Environmental Engineering Chinese Academy of Sciences Comparative and Medical Genomics Laboratory Institute of Molecular and Cell Biology Southern Marine Science and engineering guangdong Laboratory (Guangzhou) Biomarker Technologies corporation University of Chinese Academy of Sciences

Syngnathids(seahorses, pipefishes and seadragons) exhibit an array of morphological innovations including loss of pelvic fins, a toothless tubular mouth and male pregnancy. They comprise two subfamilies:Syngnathinae and Nerophinae. Genomes of three Syngnathinae members have been analyzed *** this study, we have sequenced the genome of a Nerophinae member, the Manado pipefish(Microphis manadensis), which has a semi-enclosed brood pouch. Comparative genomic analysis revealed that the molecular evolutionary rate of the four syngnathids is higher than that of other teleosts. The loss of all but one P/Q-rich SCPP gene in the syngnathids suggests a role for the lost genes in dentin and enameloid formation in teleosts. Genome-wide comparison identified a set of 118 genes with parallel identical amino acid substitutions in syngnathids and placental mammals. Association of some of these genes with placental and embryonic development in mammals suggests a role for them in syngnathid pregnancy.

关键词： Manado pipefish whole-genome sequencing transposable elements placenta-like structure convergent evolution

Coevolutionary insights between promoters and transcription factors in the plant and animal kingdoms

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Zoological Research 2022年第5期43卷 805-812页

作者： Jing-Song Zhang Hai-Quan Wang Jie Xia Kun Sha Shu-Tao He Hao Dai Xiao-Hu Hao Yi-Wei Zhou Qiu Wang Ke-Ke Ding Zhang-Lei Ju Wen Wang Luo-Nan Chen Key Laboratory of Systems Biology Shanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghai 200031China Department of General Surgery Shanghai General Hospital of Shanghai Jiao Tong University School of MedicineShanghai 200080China College of Information engineering Zhejiang University of TechnologyHangzhouZhejiang 310023China Naval Healthcare Information Center Faculty of Military Health ServicesNaval Medical UniversityShanghai 200433China Bioinformatics Core of Excellence Department GenScript Biotech CorporationNanjingJiangsu 211110China Waigaoqiao Free Trade Zone Wuxi BiologicsShanghai 200131China Department of Cardiology Tongji HospitalTongji University School of MedicineShanghai 200065China School of Ecology and Environment Northwestern Polytechnical UniversityXi’anShaanxi 710072China State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Key Laboratory of Systems Health Science of Zhejiang Province School of Life ScienceHangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesChinese Academy of SciencesHangzhouZhejiang 310024China guangdong Institute of Intelligence Science and technology ZhuhaiGuangdong 519031China

The divergence and continuous evolution of plants and animals contribute to ecological *** and transcription factors(TFs) are key determinants of gene regulation and transcription ***,theevolutionary trajectories and relationships of promoters and TFs are still poorly understood. Here, we conducted extensive analysis of large-scale multi-omics sequences in 420 animal species and 223 plant species spanning nearly a billion years of evolutionary history. Results showed that promoter GC-contentandTFisoelectricpoints,as features/signatures that accompany long biological evolution, exhibited increasing growth in animal cells but a decreasing trend in plant cells. Furthermore, the evolutionary trajectories of promoter and TF signatures in the animal kingdom provided further evidence that Mammalia as well as Aves evolved directly from the ancestor Reptilia. The strong correlation between promoter and TF signatures indicates that promoters and TFs formed antagonistic coevolution in the animal kingdom, but mutualistic coevolution in the plant kingdom. The distinct coevolutionary patterns potentially drive the plant-animal divergence, divergent evolution and ecological diversity.

关键词： Molecularevolution Coevolution Promoter Transcription factor Plant-animal divergence

Effect of grain refinement induced by wire and arc additive manufacture (WAAM) on the corrosion behaviors of AZ31 magnesium alloy in NaCl solution

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Journal of Magnesium and Alloys 2023年第1期11卷 217-229页

作者： Jianwei LI Youmin QIU Junjie YANG Yinying SHENG Yanliang YI Xun ZENG Lianxi CHEN Fengliang YIN Jiangzhou SU Tiejun ZHANG Xin TONG Bin GUO School of Materials Science and engineering Harbin Institute of TechnologyHarbin 150001PR China Beijing Hangxing Machinery Manufacture Limited corporation Beijing 100013PR China Institute of Advanced Wear&Corrosion Resistant and Functional Materials Jinan UniversityGuangzhou 510632PR China The Third Academy of CASIC Beijing 100074PR China MOE Key Lab of Disaster Forecast and Control in engineering Jinan UniversityGuangzhou510632P.R.China Institute of Materials and Process Design Helmholtz-Zentrum HereonMax-Planck-Str.121502 GeesthachtGermany School of Materials Science and Hydrogen Energy Foshan UniversityFoshan 528000PR China

Additive manufacturing(AM)of Mg alloys has become a promising strategy for producing complex structures,but the corrosion performance of AM Mg components remains *** this study,wire and arc additive manufacturing(WAAM)was employed to produce single AZ31 *** results revealed that the WAAM AZ31 was characterized by significant grain refinement with non-textured crystallographic orientation,similar phase composition and stabilized corrosion performance comparing to the cast *** varied corrosion behaviors were principally ascribed to the size of grain,where cast AZ31 and WAAM AZ31 were featured by micro galvanic corrosion and intergranular corrosion,respectively.

关键词： AZ31 magnesium alloy Wire and arc additive manufacturing(WAAM) Grain refinement Microstructure Intergranular corrosion

Telomere-to-telomere and gap-free reference genome assembly of the kiwifruit Actinidia chinensis

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Horticulture Research 2023年第2期10卷 134-146页

作者： Junyang Yue Qinyao Chen Yingzhen Wang Lei Zhang Chen Ye Xu Wang Shuo Cao Yunzhi Lin Wei Huang He Xian Hongyan Qin Yanli Wang Sijia Zhang Ying Wu Songhu Wang Yi Yue Yongsheng Liu School of Horticulture Anhui Agricultural UniversityHefeiAnhui 230036China Agricultural Genomics Institute at Shenzhen Chinese Academy of Agricultural SciencesShenzhenGuangdong 518124China Institute of Fruit and Tea Hubei Academy of Agricultural SciencesWuhanHubei 430064China School of Information and Computer Anhui Agricultural UniversityHefeiAnhui 230036China Ministry of Education Key Laboratory for Bio-resource and Eco-environment College of Life ScienceState Key Laboratory of Hydraulic and Mountain River EngineeringSichuan UniversityChengduSichuan 610064China Department of Bioinformatics Anhui Double Helix Gene Technology CorporationHefeiAnhui 230022China Comprehensive Testing Ground Xinjiang Academy of Agricultural SciencesUrumqiXinjiang 830012China Institute of Special Animal and Plant Sciences Chinese Academy of Agricultural SciencesChangchunJilin 130112China

Kiwifruit is an economically and nutritionally important fruit crop with extremely high contents of vitamin ***,the previously released versions of kiwifruit genomes all have a mass of unanchored or missing ***,we report a highly continuous and completely gap-free reference genome of Actinidia chinensis cv.‘Hongyang’,named Hongyang v4.0,which is the first to achieve two de novo haploid-resolved haplotypes,HY4P and ***4P and HY4A have a total length of 606.1 and 599.6 Mb,respectively,with almost the entire telomeres and centromeres assembled in each *** comparison with Hongyang v3.0,the integrity and contiguity of Hongyang v4.0 is markedly improved by filling all unclosed gaps and correcting some misoriented regions,resulting in∼38.6–39.5 Mb extra sequences,which might affect 4263 and 4244 protein-coding genes in HY4P and HY4A,***,our gap-free genome assembly provides the first clue for inspecting the structure and function of ***,centromeric regions are characterized by higher-order repeats that mainly consist of a 153-bp conserved centromere-specific monomer(Ach-CEN153)with different copy numbers among *** enrichment analysis of the genes located within centromeric regions demonstrates that chromosome centromeres may not only play physical roles for linking a pair of sister chromatids,but also have genetic features for participation in the regulation of cell *** availability of the telomere-to-telomere and gap-free Hongyang v4.0 reference genome lays a solid foundation not only for illustrating genome structure and functional genomics studies but also for facilitating kiwifruit breeding and improvement.

关键词： breeding linking assembly

Facet-dependent Thermal and Electrochemical Degradation of Lithium-rich Layered Oxides

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Cubature Kalman filter with closed-loop covariance feedback control for integrated INS/GNSS navigation

能源与环境材料（英文） 2023年第6期6卷 345-355页

作者： Guohua Li Zhimin Ren Haoxiang Zhuo Changhong Wang Biwei Xiao Jianwen Liang Ruizhi Yu Ting Lin Alin Li Tianwei Yu Wei Huang Anbang Zhang Qinghua Zhang Jiantao Wang Xueliang Sun National Power Battery Innovation Center GRINM Group Corporation LimitedBeijing 100088China China Automotive Battery Research Institute Co. Ltd.Beijing 100088China General Research Institute for Nonferrous Metals Beijing 100088China Department of Mechanical and Materials engineering University of Western Ontario London ON N6A 5B9Canada Faculty of Materials and Manufacturing Key Laboratory of Adv.Funct.Mater.Education Ministry of China Beijing University of TechnologyBeijing 100124China

Lithium-rich layered oxides(LLOs)are promising candidate cathode materials for safe and inexpensive high-energy-density Li-ion ***,oxygen dimers are formed from the cathode material through oxygen redox activity,which can result in morphological changes and structural transitions that cause performance deterioration and safety ***,a flake-like LLO is prepared and aberration-corrected scanning transmission electron microscopy(STEM),in situ high-temperature X-ray diffraction(HT-XRD),and soft X-ray absorption spectrum(sXAS)are used to explore its crystal facet degradation behavior in terms of both thermal and electrochemical ***-induced degradation behavior of LLO in different facet reveals significant anisotropy at high *** degradation originates from side facets,such as the(010)facet,while the close(003)facet is *** results are further understood through ab initio molecular dynamics calculations,which show that oxygen atoms are lost from the {010} ***,the facet degradation process is that oxygen molecular formed in the interlayer and accumulated in the ab plane during heating,which result in crevice-voids in the ab plane *** study reveals important aspects of the mechanism responsible for oxygen-anionic activity-based degradation of LLO cathode materials used in lithium-ion *** particular,this study provides insight that enables precise and efficient measures to be taken to improve the thermal and electrochemical stability of an LLO.

关键词： electrochemical degradation facet degradation lithium-rich layered oxides thermal degradation

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Chinese Journal of Aeronautics 2023年第5期36卷 363-376页

作者： Bingbing GAO Gaoge HU Lei ZHANG Yongmin ZHONG Xinhe ZHU Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057China School of Automation Northwestern Polytechnical UniversityXi’an 710072China Aviation Industry corporation of China(AVIC) Xi’an Aeronautic Computing Technique Research Institute(ACTRI)Xi’an 710068China School of engineering RMIT UniversityBundooraVIC 3083Australia

Cubature Kalman Filter(CKF)offers a promising solution to handle the data fusion of integrated nonlinear INS/GNSS(Inertial Navigation System/Global Navigation Satellite System)***,its accuracy is degraded by inaccurate kinematic noise statistics which originate from disturbances of system *** paper develops a method of closed-loop feedback covariance control to address the above problem of *** this method,the posterior state and its covariance are fed back to the filtering process to constitute a closed-loop structure for CKF covariance ***,based on the maximum likelihood principle,a control scheme of the prior state covariance is established by using the feedback state and covariance within an estimation window and further adopting a proportional coefficient to amplify the feedback terms in recent time steps for the full use of new information to reflect actual system *** it does not directly use kinematic noise covariance,the proposed method can effectively avoid the adverse impact of inaccurate kinematic noise statistics on filtering ***,it can also guarantee the prior state covariance to be positive semi-definite without involving extra *** efficacy of the proposed method is validated by simulations and experiments for integrated INS/GNSS navigation.

关键词： Covariance control Inertial navigation system Kalman filter Maximum likelihood Proportional coefficient

From China’s Heavy Precipitation in 2020 to a “Glocal” Hydrometeorological Solution for Flood Risk Prediction

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Advances in Atmospheric Sciences 2021年第1期38卷 1-7页

作者： Huan WU Xiaomeng LI Guy J.-P.SCHUMANN Lorenzo ALFIERI Yun CHEN Hui XU Zhifang WU Hong LU Yamin HU Qiang ZHU Zhijun HUANG Weitian CHEN Ying HU guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies and School of Atmospheric SciencesSun Yat-sen UniversityGuangdong 510000China Southern Marine Science and engineering Laboratory Guangdong 519000China Earth System Science Interdisciplinary Center University of MarylandMaryland 20742USA School of Geographical Sciences University of BristolBristol BS81THUK DFO Global Flood Observatory University of Colorado BoulderBoulder 80309USA CIMA Research Foundation Savona 17100Italy National Meteorological Center Beijing 100081China guangdong Meteorological Center GuangzhouGuangdong 510000China GuangXi Climate Center NanningGuangxi 530000China guangdong Climate Center GuangzhouGuangdong 510000China China Three Gorges corporation Beijing 100081China

The prolonged mei-yu/baiu system with anomalous precipitation in the year 2020 has swollen many rivers and lakes,caused flash flooding,urban flooding and landslides,and consistently wreaked havoc across large swathes of China,particularly in the Yangtze River *** precipitation and flooding anomalies have already been seen in magnitude and extension so far this year,which have been exerting much higher pressure on emergency responses in flood control and mitigation than in other years,even though a rainy season with multiple ongoing serious flood events in different provinces is not that uncommon in *** of delving into the causes of the uniqueness of this year’s extreme precipitation-flooding situation,which certainly warrants in-depth exploration,in this article we provide a short view toward a more general hydrometeorological solution to this annual nationwide problem.A“glocal”(global to local)hydrometeorological solution for floods(GHS-F)is considered to be critical for better preparedness,mitigation,and management of different types of significant precipitation-caused flooding,which happen extensively almost every year in many countries such as China,India and the United *** a GHS-F model is necessary from both scientific and operational perspectives,with the strength in providing spatially consistent flood definitions and spatially distributed flood risk classification considering the heterogeneity in vulnerability and resilience across the entire *** in the development of such a GHS-F are suggested,emphasizing the user’s requirements and needs according to practical experiences with various flood response agencies.

关键词： flooding flood risk global to local hydrological model extreme precipitation

Microstructure Evolution of a 10Cr Heat-Resistant Steel during High Temperature Creep

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Journal of Materials Science & technology 2011年第4期27卷 344-351页

作者： Ping Hu Wei Yan Wei Sha Wei Wang Yiyin Shan Ke Yang Institute ofMetal Research Chinese Academy of Sciences Shenyang 110016 China Graduate School of Chinese Academy of Sciences Beijing 100049 China School of Planning Architecture and Civil Engineering Queen's University of Belfast Belfast BT71NN UK Electric Power Research Institute of guangdong Power Grid corporation Guangzhou 510080 China

The microstructure evolution of a 10Cr ferritic/martensitic heat-resistant steel during creep at 600℃ was investigated in this work. Creep tests demonstrated that the 10Cr steel had higher creep strength than conventional ASME-P92 steel at 600℃. The rnicrostructure after creep was studied by transmission electron microscopy, scanning electron microscopy and electron probe microanalysis. It was revealed that the martensitic laths were coarsened with time and eventually developed into subgrains after 8354 h. Laves phase was observed to grow and cluster along the prior austenite grain boundaries during creep and caused the fluctuation of solution and precipitation strengthening effects, which was responsible for the two slope changes on the creep rupture strength vs rupture time curve. It was also revealed that the microstructure evolution could be accelerated by stress, which resulted in the lower hardness in the deformed part of the creep specimen, compared with the aging part.

关键词： Ferrous metals and alloys Creep Microstructure