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Friction Characteristics Between Marine Clay and Construction Materials

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Journal of Ocean University of China 2024年第2期23卷 427-437页

作者： KOU Hailei HUANG Jiaming CHENG Yang College of Engineering Ocean University of ChinaQingdao 266100China Fourth Division Organization Department of the CPC Qingdao Municipal CommitteeQingdao 266100China

Structure-soil interface friction characteristics is of importance to investigate the interaction between engineering structures and soils,especially for offshore *** interface friction behavior between marine clay and structural materials with different roughness was studied in this paper by using 3D optical scanning tests,a modified direct shear device and numerical *** between the surface roughness of structures,water content and interface friction angle were presented by model *** increase of water contents decreased the interface friction *** interfaces with different roughness,the interface friction angles will be smaller than that of the soil when the water content exceeds a certain *** roughness of the interface and the water content of the soil are mutually coupled to influence the coefficient of friction(COF).This paper proposed a Finite Element Method(FEM)to simulate the interface direct shear tests of structures with different *** surface models with different roughness are established based on the structure data obtained by 3D *** Coupled Eulerian-Lagrangian(CEL)approach was employed to analyse soils sheared by irregular *** interface behavior for interfaces with different roughness under cyclic shear stresses was analyzed by FEM.

关键词： marine clay construction material interface friction behavior surface roughness Finite Element Method

Work Actively to Implement the Global Civilisation Initiative and Jointly Advance Human Civilisations

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International Understanding 2024年第1期 4-10页

作者： Liu Jianchao the International Department of the cpc Central committee

As countries around the world face common challenges in the course of seeking peace and development and making explorations towards modernisation,the call for solidarity,collaboration and dialogue is growing stronger than ***,the deep-seated problems of suspicion,division and confrontation are still blocking international ***,it is essential to step up inter-civilisation exchanges for closer people-to-people *** Global Civilisation Initiative(GCl),proposed by General Secretary Xi Jinping in his keynote address entitled"Join Hands on the Path Towards Modernisation"at the cpc in Dialogue with World Political Parties High-level Meeting on March 15,2023,is a sincere call to the world for in-depth inter-civilisation exchanges and dialogue to advance human civilisations through inclusiveness and mutual learning.

关键词： peace mutual closer

Accelerating Efforts to Build a Free Trade Port with Chinese Characteristics and Global Influence

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Qiu Shi 2024年第1期16卷 74-80页

作者： Feng Fei cpc Hainan provincial committee Hainan provincial People's Congress Standing committee

The establishment of a free trade port with Chinese characteristics in Hainan Province represents a significant reform and opening up initiative,with President Xi Jinping playing a personal role in its design,planning,and *** also stands as a major strategic decision taken by the Central committee of the Communist Party of China(cpc)based on both the domestic and international contexts,in order to advance the innovative development of Chinese *** April 2018.

关键词： promotion innovative strategic

Problem identification and revitalization strategies for the recovery and reconstruction of traditional villages in the Ms 6.8 Luding Earthquake

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Journal of Mountain Science 2024年第2期21卷 361-379页

作者： HUANG Chao QIU Jian LIU Chun JIANG Rui ZHAO Chuanrong ZHANG Yi School of Architecture and Research Center of Space Planning and Engineering Design Southwest Jiaotong UniversityChengdu 611756China Sichuan provincial Rural Construction and Development Center Chengdu 610041China Sichuan Institute of Urban and Rural Construction Chengdu 610043China China Association for Promoting Democracy(CAPD)Sichuan provincial committee Chengdu 610016China Sichuan provincial Architectural Design and Research Institute(SADI) Chengdu 610095China

Post-disaster reconstruction is a topic of global concern,and traditional villages have special heritage attributes and need to face more requirements and obstacles in post-disaster *** paper summarizes four concepts based on the research on post-disaster reconstruction both domestically and internationally,as well as the recovery and reconstruction of cultural *** a field survey of traditional villages in the Ms 6.8 Luding earthquake-stricken area,it is found that there are problems such as insufficient awareness of heritage value,misalignment of scientific reconstruction technology,and insufficient protection of reconstruction elements during the reconstruction *** villages face the risk of declining or even loss of heritage *** order to effectively protect traditional villages and inherit the carrier of regional culture,four targeted reconstruction response strategies are proposed,i.e.,to"establish special planning for traditional village preservation","emphasize recovery of the authenticity of village heritage","ensure elements for village heritage recovery"and"promote the activation and utilization of village heritage",based on the problems discovered during the survey and the four concepts summarized in the research on post-disaster reconstruction of traditional *** research results hope to provide useful reference for ancient cultural areas affected by earthquakes on how to protect cultural heritage during the post-disaster reconstruction process.

关键词： Seismic hazard Decision making Traditional village Cultural heritage protection Post-earthquake recovery and reconstruction Revitalization strategy

The Transformation of Economic Globalization and China’s Role in It Under Profound Changes Unseen in a Century

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Contemporary World 2024年第3期 8-13页

作者： Chen Jianqi Global Governance and International Organization Department Institute of International Strategic StudiesParty School of the Central Committee of the CPC

The world economy prospers when it is open,but declines when it is *** the end of the cold war,economic globalization has developed rapidly,forming a new global development pattern that features intertwined interests of countries all over the *** report to the 20th National Congress of cpc pointed out that at present,changes in the world,times and history are unfolding in a way unseen in the past.

关键词： Transformation globalization pattern

The Return of Ten Thousand Birds

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China Book International 2024年第3期 91-93页

作者： Jin Duo'er Children's Literature committee of the Jiangxi provincial Writers Association

At dawn,when the sun beats its drum,Yingpanxu *** along With it,in addition to Yingpanxu's lush vegetation and curling cooking smoke,are the birds in the forest:egrets,cuckoos,turtledoves,willow warblers,shrikes,white pheasants,long-billed crows,pine *** spirits of the earth,fapping their wings,lightly tracing beautiful arcs through the forests and *** milk-like fog in the forest,and the towering mountains piercing into the clouds,become even more poetic and lively amidst the chorus of bird calls.

关键词： forest smoke mountains

Epidemiology and current management of cerebrovascular disease in China

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Journal of Geriatric Cardiology 2024年第5期21卷 465-474页

作者： Sheng-Shou HU The Writing committee of the Report on Cardiovascular Health and Diseases in China

The Annual Report on Cardiovascular Health and Diseases in China(2022)intricate landscape of cardiovascular health in *** connection with the previous section,this fifth section of the report continues the dissection on the manage-ment of cardiovascular diseases(CVD).Cerebrovascular disease is the leading cause of death and loss of healthy life among Chinese *** on the results of GBD 2019,from 1990 to 2019,the years of life lost due to premature death caused by stroke showed a decreasing trend,while the years lived with disability still increased *** present,national mortal-ity surveillance system can provide national and provincial representative annual death data on cerebrovascular disease,but the national representative data on some other important epidemiological indicators(such as incidence,prevalence,disability rate,and case fatality rate)are scarce in *** the construction of large cohort population and extension of follow-up time,re-search on stroke-related risk factors is increasing,providing a basis for the prevention and control of risk *** to limited large-scale population-based intervention studies,there is a lack of epidemiological evidence to transform into feasible interven-tion strategies and *** recent years,great progress in endovascular treatment for basilar-artery occlusion has been achieved in China,but there is still much room for improvement of guideline-based anticoagulant treatment and lipid-lowering treatment,as well as standardized diagnosis and treatment among patients with ischemic stroke.

关键词： prevention diagnosis Epidemiology

Building a Beautiful China:Promoting Harmony Between Humanity and Nature

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Qiu Shi 2024年第1期16卷 2-9页

作者： XI JINPING cpc Central committee

The next five years will be crucial to building a Beautiful *** should thoroughly implement the thinking on promoting ecological progress with Chinese characteristics for a new era,adhere to the people-centered approach,and uphold and act on the principle that lucid waters and lush mountains are invaluable *** our efforts to build a great country and advance national rejuvenation,we will prioritize the Beautiful China Initiative to make notable progress in this regard,and work for substantial improvements in urban and rural living *** will enable us to support high-quality development with a high-quality environment.

关键词： assets Harmony mountains

Diverse foraging strategies of breeding Swinhoe's Storm-petrel in the productive marginal sea of the Northwest Pacific

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Avian Research 2024年第1期15卷 27-34页

作者： Yachang Cheng Lei Zhu Lin Xue Shisheng Ma Nan Jia Shaoping Zang Zhihai Cao Jing Yuan Yang Liu State Key Laboratory of Biocontrol School of EcologySun Yat-sen UniversityShenzhen 518107China Guangxi Mangrove Research Center Guangxi Marine Academy of SciencesNanning 530021China Qingdao Bird Watch Society Qingdao 266121China jiangsu provincial Environmental Monitoring Center Nanjing 210019China Marine Science and Engineering Qingdao Agricultural UniversityQingdao 266109China Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering Fudan UniversityShanghai 200433China Qingdao Marine Management and Support Centre Qingdao 266555China Management committee of Lingshan Island provincial Nature Reserve Qingdao 266428China

Understanding the foraging behavior is essential for investigating seabird ecology and conservation,as well as monitoring the well-being of the marine *** seabirds adopt diverse foraging strategies to maximize energy gains and cope with the intensified challenges of parenting and *** tradeoff may stem from the heterogeneity of food resources and the constraints of central place ***,abundant marine productivity could alleviate the energy limitation for seabirds,resulting in a consistent foraging ***,we investigated the foraging strategy during the breeding season of a cryptic small-sized seabird,Swinhoe’s Storm-petrel(Hydrobates monorhis),in the Yellow Sea,a productive marginal sea of the Northwest *** GPS tracking,we evaluated habitat preference,quantified the foraging strategy,and tested if environmental conditions and individual traits influence foraging *** found that Swinhoe’s Storm-petrels preferred nearshore areas with shallow water and engaged in primarily short foraging *** southeastward and southwestward strategies emerged when combining trip metrics,including foraging direction,duration,and maximum *** bathymetry,proximity to the coastline,and sea surface temperature differed in two foraging *** strategies exhibited flexibility between individuals,potentially explained by wing morphology,in which longer-winged birds are more likely to embark on longer-distance foraging *** findings highlight the impact of environmental factors and individual traits on seabirds’foraging decisions in productive marginal sea *** study also provides valuable insights into the foraging ecology of this Asian endemic storm-petrel.

关键词： Behavioral strategy Biologging Central place foraging Marine primary productivity Seabird Sea surface temperature