Preliminary research on sea-level changes of the South China coast since late Epipleistocene

Several views on sea-level changes of the South China coast are briefly introduced in this paper. On the basis of 236 samples whose ages are determined by 14C chronological method and their sites are corrected with ancient water depth and crustal deformation, a basic model about sea-level changes of the South China coast since late Epipleistocene is set up. This model basically accords with the general cognitions of predecessors, i. e. it not only represents the common characteristics of sea-level changes of the East China coast but has some features of the South China coast itself. In general, this model is relatively close to the Fairbridge's curve, indicating that the sea-level undulations exist since 6 ka ago but the ranges of undulations are slightly larger than those of Fairbridge's curve.

Prospective prediction and exploration situation of marine Mesozoic-Paleozoic oil and gas in the South Yellow Sea

The South Yellow Sea Basin is a large sedimentary basin superimposed by the Mesozoic-Paleozoic marine sedimentary basin and the Mesozoic-Cenozoic terrestrial sedimentary basin, where no oil and gas fields have been discovered after exploration for 58 years. After the failure of oil and gas exploration in terrestrial basins, the exploration target of the South Yellow Sea Basin turned to the marine Mesozoic- Paleozoic strata. After more than ten years' investigation and research, a lot of achievements have been obtained. The latest exploration obtained effective seismic reflection data of deep marine facies by the application of seismic exploration technology characterized by high coverage, abundant low-frequency components and strong energy source for the deep South Yellow Sea Basin. In addition, some wells drilled the Middle-Upper Paleozoic strata, with obvious oil and gas shows discovered in some horizons. The recent petroleum geological research on the South Yellow Sea Basin shows that the structure zoning of the marine residual basin has been redetermined, the basin structure has been defined, and 3 seismic reflection marker layers are traceable and correlatable in the residual thick Middle-Paleozoic strata below the continental Meso-Cenozoic strata in the South Yellow Sea Basin. Based on these, the seismic sequence of the marine sedimentary strata was established. According to the avaliable oil and gas exploration and research, the marine Mesozoic-Paleozoic oil and gas prospects of the South Yellow Sea were predicted as follows.(1) The South Yellow Sea Basin has the same sedimentary formation and evolution history during the sedimentary period of the Middle-Paleozoic marine basin with the Sichuan Basin.(2) There are 3 regional high-quality source rocks.(3) The carbonate and clastic reservoirs are developed in the Mesozoic- Paleozoic strata.(4) The three source-reservoir-cap assemblages are relatively intact.(5) The Laoshan Uplift is a prospect area for the Lower Paleozoic oil and gas, and the Wunansha Uplift is one for the marine Upper Paleozoic oil and gas.(6) The Gaoshi stable zone in the Laoshan Uplift is a favorable zone.(7) The marine Mesozoic-Paleozoic strata in the South Yellow Sea Basin has the geological conditions required to form large oil and gas fields, with remarkable oil and gas resources prospect. An urgent problem to be addressed now within the South Yellow Sea Basin is to drill parametric wells for the Lower Paleozoic strata as the target, to establish the complete stratigraphic sequence since the Paleozoic period, to obtain resource evaluation parameters, and to realize the strategic discovery and achieve breakthrough in oil and gas exploration understanding.

The Earlier Spreading of South China Sea Basin due to the Late Mesozoic to Early Cenozoic Extension of South China Block: Structural Styles and Chronological Evidence from the Dulong-Song Chay Metamorphic Dome, Southwest China

To understand the forming and tectonic evolution of the South China Sea basin, new data of the structural styles and geochronology were obtained from the Dulong-Song Chay dome, southeastern Yunnan and northern Vietnam. The structural styles were acquired through field investigation and geo-chronological dating was carried out using zircon SHRIMP Ⅱ U-P and argon isotopic analyses. The South China Sea basin extension occurred firstly at Late Mesozoic to Early Cenozoic, and then at Late Oligocene to Middle Miocene （32-17 Ma）. The second stage of extension formed immediately after the first stage, and both extensions have a consistent forming mechanism. New structural analysis and geo-chronological data do not support the models of ＂backarc spreading＂ and ＂strike-slip faults producing the extension＂. Then what mechanism resulted in the extension of South China Sea basin？ The data indicate that at least two episodes of major extensional tectonics, i.e. , the D1 deformation at 237-228 Ma resulted in the rising and exhumation of the dome, and D2 deformation at 86-78 Ma overprinted and redeformed the dome. Of them, the D2 shows a consistent forming time, extensional direction and tectonic regime among Dulong-Song Chay dome, South China block and the northern margin of the South China Sea basin. Regional geology has proved that the northern margin of the South China Sea basin belongs to the South China block, therefore, we interpreted that the Late Mesozoic to Early Cenozoic extensional tectonics occurred in the northern margin of the South China Sea basin due to the intraplate deformation of the South China block, while the Ailaoshan-Red River sinistral slip strengthened the Cenozoic extension in the South China Sea basin.

China’s Lunar and Deep Space Exploration Program for the Next Decade(2020–2030)

China has carried out four unmanned missions to the Moon since it launched Chang’E-1,the first lunar orbiter in 2007.With the implementation of the Chang’E-5 mission this year,the three phases of the lunar exploration program,namely orbiting,landing and returning,have been completed.In the plan of follow-up unmanned lunar exploration missions,it is planned to establish an experimental lunar research station at the lunar south pole by 2030 through the implementation of several missions,laying a foundation for the establishment of practical lunar research station in the future.China successfully launched its first Mars probe on 23 July 2020,followed in future by an asteroid mission,second Mars mission,and a mission to explore Jupiter and its moons.

South China University of fechnology Advanced Metallic Materials Research and Processing Technology Center

A dvanced Metallic Materials Research and Processing Technology Center was found in December 1998. As a unit under The College of Mechanical Engineering, the Center is an expansion of the former Cast and Composite Materials Research Group, which was found in the early eighties of last century. The Center is focusing in the basic and applied research, and development of advanced metallic materials and their processing technology. It also functions as an organization

Strategic cooperation on South Asia standardization research

A strategic agreement was signed between Chengdu Bureau of Quality and Technological Supervision and Sichuan University on"jointly building South Asia Standardization(Chengdu)Research Center"on November 15,2017.The research center is designed as a national top-level think tank of integrated research on policies,rules and standards at both national and regional levels in South Asia.It will serve the standardization cooperation and communication between China and

Collaborative Research between South Africa and China:An Overview of Literacy Development in Grade R Classes in South Africa

The main aim is to give a synopsis of the articles which were the first of three phases of an international collaborative research project betweAfrica and a university in China.The overall theme of the project was:Literacy development in mary schools.Firstly,an introduction,including the benefits and challenges of the intesearch project collaboration based on reports in literature,is discussed.Secondly,the background othe South Africa-China project and its three phases is described.Thirdly,the literacy developmin primary schools in South Africa is discussed.Lastly,a synopsis of the South African tea’s em-pirical findings providing overviews of literacy development within the early ban and rural education in South Africa is presented.These overviews(together with two remaioverviews not included in this article)serve as a point of departure for the second phasearch project.

Scientific publications on orthopedic surgery from three major East Asian countries(2012-2021)

BACKGROUND East Asia is the most dynamic region in the world and includes three major countries:Japan,South Korea and China.Due to rapid economic growth,orthopedics research in East Asia has achieved great advances during the past 10 years.However,the current status of orthopedic research in Japan,South Korea and China is still unclear.AIM To understand the current status of orthopedic research in Japan,South Korea,and China.METHODS Journals listed in the“Orthopedics”category of Science Citation Index Expanded subject categories were included.The PubMed and Web of Knowledge electronic databases were searched to identify scientific publications from the selected journals written by researchers from Japan,South Korea and China.A systematic analysis was conducted to analyze orthopedic research articles published in the three countries based on the number of articles,study design,impact factors(IFs)and citations.Furthermore,we also ranked the top 10 countries worldwide with the highest publications in the past 10 years.Additionally,we ranked the top 10 countries with the highest number of publications in the world in the past 10 years.Statistical analyses were performed using SPSS 20.0 software(SPSS Inc.,Chicago,IL,United States),and statistical results are given in Tables and Figures.The Kruskal-Wallis test and the Mann-Whitney test were used to detect differences between countries.The tendency regarding the number of articles was analyzed by curvilinear regression.A two-tailed P<0.05 was considered significant.RESULTS From 2012-2021,a total of 144518 articles were published in the 86 selected orthopedic journals.During this period,the number of worldwide published orthopedic articles has shown an annual increasing trend.A total of 27164 orthopedic research articles were published by Japan,South Korea and China during the past 10 years;44.32%were from China,32.98%were from Japan,and 22.70%were from South Korea.From 2012 to 2021,the annual number of articles markedly increased in each of the three countries.Over time,the worldwide share of articles increased substantially in South Korea(3.37%to 6.53%,P<0.001)and China(5.29%to 9.61%,P<0.001).However,the worldwide share of articles significantly decreased in Japan(5.22%to 3.80%,P<0.001).The annual total IFs of articles from China were well above those of articles from Japan and South Korea(36597.69 vs 27244.48 vs 20657.83,P<0.05).There was no significant difference among the articles in the top 10 high-IF orthopedics journals published from those three countries[South Korea(800)>China(787)>Japan(646),P>0.05].CONCLUSION Over the past 10 years,China’s scientific publications in orthopedic journals have shown an increasing trend.Considering the relative scale of the populations,Japan and South Korea have outpaced China with respect to quality.

Effects of Land Use Changes Across Different Urbanization Periods on Summer Rainfall in the Pearl River Delta Core Area

The Pearl River Delta(PRD)is one of the three urban agglomerations in China that have experienced rapid development.For this study,a core area of the PRD was identified,comprising the highly urbanized areas of Guangzhou,Foshan,Zhongshan,Zhuhai,Shenzhen,and Dongguan Cities.The expansion of these urban areas was tracked across three time periods—the year population urbanization rate exceeded 70%(2000),18 years before(1982),and 18 years after(2018).This study used the Weather Research and Forecasting(WRF)model to explore summer rainfall changes across different urbanization periods in the PRD core area.The results show that urban land expansion mainly occurred in the post urbanization period.Rainfall changes acros s different urbanization periods were roughly consistent with previously observed spatial and temporal changes accompanying urban expansion in the PRD core area.Extreme rainfall mainly increased in the post urbanization period,shifting rainstorm center towards the PRD core area.Further causal analysis revealed that land use changes affected rainfall by altering thermodynamics and water vapor transfer.The urban expansion changed the surface energy balance,resulting in increased surface heating and heat island effects.The heat island effects thickened the planetary boundary layer and increased vertical wind speeds,which initiated dry island effects,thereby causing more water vapor transportation to the atmosphere.Consequently,rainstorms and extreme rainfall events have become concentrated in urban areas.

2020年屈原及楚辞研究综述

2020年,屈原及楚辞研究持续推进。其研究主要涉及屈原研究、楚辞作品研究、楚辞学史研究、屈原与楚辞作品传播与接受研究、宋玉研究等几个方面,成果丰富,创见颇多。

骆鸿凯楚辞研究述论

骆鸿凯的楚辞研究继承了章黄学派推尊王逸《楚辞章句》的传统,批评明代以来楚辞解释穿凿附会的风气。其著作常常附录后世论著补充论证,或是加按语于后,对之进行辨析和阐释;又发扬乾嘉朴学讲究实证的传统,结合楚辞作品和前人相关评论,通过对楚辞的文本、体制等所进行的简要分析,对《楚辞》源于《诗经》的观点进行精细阐释,其论多宏通准确;其研究又贴近时代,注重论著的教材特性,讲究论述框架系统的严谨,语言精当,句式、韵式研究较前人更加细密,其楚辞学意识更加鲜明。在传统学术向现代转型的清末民初时期,骆鸿凯的楚辞研究内容丰富,体系完整,断制清晰,具有较为重要的楚辞学史意义。

2019年屈原与楚辞研究综述

2019年屈原及楚辞研究继续推进,成果丰富。本年度屈原及楚辞研究大致包括屈原研究、楚辞作品研究、楚辞学史研究、宋玉研究、楚辞翻译研究等方面。

宋代官修方书中脏腑病证研究进展

宋代官修方书是宋代医学成就的集中体现,也是在医学门户未大量分化之前最系统、最全面的中医学术总结。脏腑学说是中医理论体系的核心,而脏腑病证是中医认识疾病的核心,宋代官修方书中记载有大量脏腑病证相关内容,近年来学者们对其中各个脏腑的病证大都有所讨论,但仍不够系统与精深,宋代官修方书的系统性、权威性、实用性及承上启下作用为脏腑病证提供了一个良好的研究样本,值得系统挖掘与研究。

近四十年来国内宋代茶诗研究的回顾与展望

近四十年来,随着中国茶文化研究的日益深入,茶诗研究热度的上升,学界对宋代茶诗的关注和研究也逐渐增多。其研究历程大致可分为三个阶段:1984-2000年,为研究发轫期;2001-2016年,为研究蓬勃发展期;2017年至今,为研究渐趋成熟期。总体上看,近四十年来,宋代茶诗研究成果不算少,但还基本停留在茶诗名家研究,学科交叉研究如茶诗地理学研究还相对较少,茶诗的艺术性也还有待进一步深入探讨。未来宋代茶诗研究还可在宏观把握和系统梳理的基础上,进一步加强理论深度的挖掘,并充分利用交叉学科研究的优势,从多角度切入,进一步拓展、深入对宋代茶诗的研究。

华南民居研究的发展历程与当代的传承创新

以华南理工大学为核心研究力量的华南民居研究团队,早在20世纪30年代便开始对中国民居建筑进行基础性研究,历经90余载的持续探索,倡导建立了民居建筑学科,形成了各具特色的多元民居研究方向,建立了稳定的民居研究队伍,取得了丰硕的民居研究成果,产生了广泛的学术影响。文章回顾华南民居研究发展历程,梳理近十余年来华南民居学术群体在跨学科多元研究方向所取得的突破性进展,包括民居与民系聚落、民居与文化线路、民居与文化地理、民居与环境景观、民居与审美文化、民居与修缮技术、民居与传承应用、民居与数字技术等内容,以期为推动中国民居研究的进一步深入和拓展提供有益参考。

常璩《华阳国志》著录宗旨与音乐观念考辨

《华阳国志》是两晋时期常璩所著的一部带有浓郁地方色彩的史志,书中不仅记录了上百个古代人物的事迹,而且还详细描述了当地少数民族演绎歌谣、歌舞、器乐等的真实情景。从书名“华阳国”一词来看,该书所著录的是封建中央王朝之外的少数民族地区的史志,常璩依托当地民俗民风和人们的宗教观念,对一些音乐史料进行了考证,因此《华阳国志》具有独特的文化价值,对中国少数民族音乐发展产生了一定的影响。