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Characteristics of Milankovitch cycles recorded in Eocene strata in the eastern depression of North Yellow Sea Basin, North China

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China Geology 2021年第2期4卷 274-287页

作者： Shu-yu Wu Jun Liu jian-wen chen Hao-ran Wu School of Engineering China University of GeoscienceWuhan 430074China Yantai Coastal Zone Geological Survey Center China Geological SurveyYantai 264001China Chinese Academy of Geological Sciences Beijing 100037China The Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao Institute of Marine GeologyQingdao 266071China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266061China

As cyclical orbital movements of Earth,Milankovitch cycles can be recorded in sedimentary *** time they reflect can be used to accurately divide and compare *** cycles recorded in strata enrich the stratigraphic theory,especially the theories of cycle stratigraphy,and thus they are widely used in geological survey engineering *** study explored the characteristics of the Milankovitch cycles recorded in the eastern depression of the North Yellow Sea Basin,highlighting their control over high-frequency stratigraphic *** Eocene Milankovitch cycles in the depression were calculated based on the method proposed by ***,and their parameters primarily include eccentricity cycles of 125 ka and 99 ka,obliquity cycles of 51 ka and 39 ka,and precession cycles of 23 ka and 19 *** analysis of gamma-ray(GR)and spontaneous potential(SP)log curves of the Eocene strata was carried out to divide and compare stratigraphic sequences,revealing that the spectral peaks correspond well to astronomical *** indicates that the strata in the depression fully record Milankovitch ***,there are long-,medium-,and short-term stratigraphic cycles in the eastern depression,with a thickness of 13.03-15.89 m,3.70-5.21 m,and 2.17-2.94 m,*** sedimentation rates of the Eocene strata were calculated to be 121.2-127.12 m/Ma *** the uplift to the center of the lacustrine basin along the slope in the eastern depression,both the sedimentation duration and the sediment thickness increase,while the sedimentation rate remains relatively *** Eocene strata can be divided into six stages of high-frequency sequences by continuous wavelet transformation,namely E_(6)-E_(1) from bottom to *** sedimentation duration and sedimentation rates of the sequences were calculated using spectral analysis with each of the sequences as a separate ***,the impacts of climate change on the sedimentary environm

关键词： Milankovitch cycle Sedimentation rate Sedimentation duration Geophysics Eocene Geological survey engineering Eastern depression North Yellow Sea Basin(NYSB)

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Sedimentological sequence and depositional evolutionary model of Lower Triassic carbonate rocks in the South Yellow Sea Basin

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China Geology 2019年第3期2卷 301-314页

作者： Yu-xi Zhang jian-wen chen jiang-yu Zhou Yong Yuan Faculty of Earth Resource China University of GeosciencesWuhan 430074China Qingdao Institute of Marine Geology China Geological SurveyMinistry of Natural ResourcesQingdao 266071China

Based on well logging and seismic data, combined with a comparative analysis of drilling data in the Lower Yangtze region, the sequence stratigraphic framework of the Qinglong Formation was established and divided into four third-order sequences. Each sequence is mainly composed of the transgress system tract (TST) and the high-stand system tract (HST). According to the lithology, logging curve and seismic reflection structure, the sedimentary filling characteristics and evolution law for the sequence are analyzed. The results show that each sequence is dominated by a half-cycle decline of sea level, and the rise-fall of sea level controls the distribution and evolution of sedimentary systems within the sequence. During the relative sea-level rise, sedimentation rates slow down and muddy sediments are developed. The characteristics of condensing intervals on the flooding surface are very obvious, and continental shelf and open platform deposition are mainly developed. During the relative decline of sea level, the thickness of sediments increased. The main developments were restricted platform and platform shoal environment, and locally developed evaporation platform environment.

关键词： Lower Triassic Sequence stratigraphy Sea-level change Carbonate rocks Marine geological survey engineering Yellow Sea China

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Boosting the electrochromic properties by large V_(2)O_(5)nanobelts interlayer spacing tuned via PEDOT

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Chinese Chemical Letters 2024年第9期35卷 408-413页

作者： Haohao Sun wenxuan Wang Yuli Xiong Zelang jian wen chen State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya 572000China

Vanadium pentoxide(V_(2)O_(5))with a layered structure is of great interest in the field of electrochromic(EC)due to its abundance of color ***,there are still a series of problems such as slow ion diffusion,poor electronic conductivity and cyclic stability in the reaction ***,we successfully prepared a stable and fast multi-color electrochromic material V_(2)O_(5)-PEDOT by a simple“one-pot”*** layer space of V_(2)O_(5)could be tuned by 3,4-ethylenedioxythiophene(named V_(2)O_(5)-PEDOT)during the dissolution and recrystallization of vanadium *** expanded layer spacing facilitates rapid ion insertion and *** serves as an internal conductive pillar to improve the overall conductivity of the *** obtained intercrossing structure of the nanobelts shortens the ion diffusion distance and ensures electrolyte *** V_(2)O_(5)-PEDOT exhibits the fast response time(1.1 s for coloration and 3.5 s for bleaching at 422 nm),high optical contrast(ΔT=45%at 422 nm andΔT=35.2%at 1000 nm),great coloration efficiency(CE=97.1 cm2/C),and high cyclic stability(86%preserved after 3000 cycles).The electrochromic devices(ECD)were successfully assembled by using V_(2)O_(5)-PEDOT films as ion storage layers and electrochromic layers,demonstrating remarkable performance.

关键词： Vanadium oxide PEDOT Nanobelts Interlayer spacing Electrochromic

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Discussion on "sandwich"structures and preservation conditions of shale gas in the South Yellow Sea Basin

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China Geology 2018年第4期1卷 485-492页

作者： jian-qiang Wang jian-ming Gong Li Zhang Hai-yan cheng Jing Liao jian-wen chen Jing Su Chuan-sheng Yang Qingdao Institute of Marme Geology CGSQingdao 266071China Laboratory for Marme Mineral Resource Qingdao Pilot National Laboratory for Marme Science and TechnologyQingdao 266071China Guangzhou Marine Geological Survey Guangzhou 510760China Qingdao Geological Exploration Institute of China Metallurgical Geology Bureau Qingdao 266071China 不详

In order to make a breakthrough in Mesozoic-Paleozoic shale gas exploration in the South Yellow Sea Basin,a comparison of the preservation conditions was made within the Barnett shale gas reservoirs in the Fortworth Basin,the Jiaoshiba shale gas reservoirs in Sichuan Basin and potential shale gas reservoirs in Guizhou *** results show that the "Sandwich"structure is of great importance for shale gas *** to,the "Sandwich"structure is a kind of special reservoir-cap rock assemblage which consist of limestone or dolomite on the top,mudstone or shale layer in the middle and limestone or dolomite at the *** consideration of the Mesozoic-Paleozoie in the Lower Yangtze,and Laoshan Uplift with weak Paleozoic deformation and thrust fault sealing On both flanks of the Laoshan Uplift,a conclusion can be drawn that the preservation conditions of shale gas probably developed "Sandwich" structures in the Lower Cambrian and Permian,which are key layers for the breakthrough of shale gas in the South Yellow ***,the preferred targets for shale gas drilling probably locate at both flanks of the Laoshan Uplift.

关键词： "Sandwich"structure Preservation conditions Shale gas Laoshan Uplift South Yellow Sea

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Structural characteristics and evolution of the South Yellow Sea Basin since Indosinian

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China Geology 2018年第4期1卷 466-476页

作者： Bao-hua Lei Ming Xu jian-wen chen Jie Liang Yin-guo Zhang Qingdao Institute of Marine Geology CGSQingdao 266071China Laboratory for Marme Mmeral Resource Qingdao National Laboratoryfor Marine Science and TechnologyQingdao 266071China

Based on the seismic data gathered in past years and the correlation between the sea and land areas of the Lower Yangtze Platform,the structural characteristics of the South Yellow Sea Basin since the Indosinian tectonic movement is studied in this *** stages of structural deformation can be distinguished in the South Yellow Sea Basin since the *** first stage,Late Indosinian to Early Yanshanian, was dominated by foreland deformation including both the uplifting and subsidence stages under an intensively compressional *** second stage,which is called the Huangqiao Event in the middle Yanshanian,was a change for stress fields from compression to *** in the third stage (the Sanduo Event)in the Late Himalayan,the basin developed a depression in the Neogene-Quatemary after rifting in the Late *** long-time evolution controlled 3 basin formation stages from a foreland basin,then a fault basin to a final depression *** conclusion,since the Indosinian,the South Yellow Sea Basin has experienced compressional fold and thrust,collisional orogen,compressional and tensional pulsation,strike-slip,extensional fault block and inversion structures,compression and *** NE,NEE,nearly EW and NW trending structures developed in the *** west to east,the structural trend changed from NEE to near EW to *** from north to south,they changed from NEE to near EW with a strong-weak-strong zoning ***,the marine and terrestrial facies basins show a "seesaw"pattern with fold and thrust in the early stages,which is strong in the north and weak in the south and an extensional fault in later stages,which is strong in the north and weak in the *** the marine facies'basin,thrust deformation is more prevailing in the upper structural layer than that in the lower *** tectonic mechanism in the South Yellow Sea Basin is mainly affected by the collision between the Yangtze and North China

关键词： Structural deformation Indosinian Movement Tectonic evointion South Yellow Sea Basin Laoshan uplift Marine hydrocarbon exploration

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Atomic layer deposition in advanced display technologies:from photoluminescence to encapsulation

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International Journal of Extreme Manufacturing 2024年第2期6卷 65-82页

作者： Rong chen Kun Cao Yanwei wen Fan Yang jian Wang Xiao Liu Bin Shan State Key Laboratory of Intelligent Manufacturing Equipment and Technology School of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiPeople’s Republic of China State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiPeople’s Republic of China

Driven by the growing demand for next-generation displays,the development of advanced luminescent materials with exceptional photoelectric properties is rapidly accelerating,with such materials including quantum dots and phosphors,***,the primary challenge preventing the practical application of these luminescent materials lies in meeting the required durability *** layer deposition(ALD)has,therefore,been employed to stabilize luminescent materials,and as a result,flexible display devices have been fabricated through material modification,surface and interface engineering,encapsulation,cross-scale manufacturing,and *** addition,the appropriate equipment has been developed for both spatial ALD and fluidized ALD to satisfy the low-cost,high-efficiency,and high-reliability manufacturing *** strategic approach establishes the groundwork for the development of ultra-stable luminescent materials,highly efficient light-emitting diodes(LEDs),and thin-film ***,this significantly enhances their potential applicability in LED illumination and backlighted displays,marking a notable advancement in the display industry.

关键词： atomic layer deposition display luminescent encapsulation

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Characteristics of major and trace elements in surface sediments of the Makran Accretionary Prism, Pakistan and their implications for natural gas hydrates

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China Geology 2021年第2期4卷 299-310页

作者： jian-ming Gong Jing Liao Yu-xi Zhang Jie Liang jian-wen chen Nuzhat Khan Syed Waseem Haider Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and TechnologyQingdao 266071China Shandong University of Science and Technology Qingdao 266071China National Institute of Oceanography ST-47Block-1CliftonKarachi-75600Pakistan

To accurately identify the natural gas hydrates(NGH)in the sea area of the Makran Accretionary Prism,Pakistan,this paper presents the testing and analysis of major and trace elements in sediment samples taken from two stations(S2 and S3)in the area by the China Geological *** shown by testing results,all major elements are slightly different in content between the two stations except SiO2 and *** also applies to the trace elements that include Sr and Ba primarily and Cr,Ni and Zn *** can be concluded in this study that the tectonic setting of the Makran Accretionary Prism is dominated by oceanic island arc and that provenance of the Makran Accretionary Prism is dominated by felsic igneous provenance,which is at the initial weathering stage and mainly consists of *** terrigenous detritus,there are sediments possibly originating from Makran-Bela Ophiolite from the northwestern part and Murray Ridge igneous rocks from the southeastern *** V/Cr,Ni/Co,and V/(V+Ni)ratios indicate that sediments of the two stations are in an oxidation-suboxidation ***,the authors infer that the sedimentary environment of the sediments 3.0 m below the seafloor tends to be gradually transformed into a reduction environment by comparison with the Qiongdongnan Basin in the South China Sea where NGH has been *** sediments in the Makran Accretionary Prism are rich in organic matter,with total organic carbon(TOC)content greater than 1%.According to comprehensive research,the organic matter in the sediments mainly originates from marine algae and has high TOC content,which is favorable for the formation of NGH.

关键词： Characteristics of major and trace elements Natural gas hydrates Marine algae Total organic carbon Makran Accretionary Prism NGH exploration trial engineering Arabian Sea Pakistan

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Cerebral furin deficiency causes hydrocephalus in mice

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Genes & Diseases 2024年第3期11卷 438-451页

作者： Shiqi Xie Xiaoyong Xie Jing Tang Biao Luo jian chen Qixin wen jianrong Zhou Guojun chen Nursing College Chongqing Medical UniversityChongqing 400016China Department of Neurology The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Major Neurological and Mental DisordersChongqing Key Laboratory of NeurologyChongqing 400016China

Furin is a pro-protein convertase that moves between the trans-Golgi network and cell surface in the secretory *** have previously reported that cerebral overexpres-sion of furin promotes cognitive functions in ***,by generating the brain-specific furin conditional knockout(ckO)mice,we investigated the role of furin in brain *** found that furin deficiency caused early death and growth *** resonance im-aging showed severe *** the brain of furin cko mice,impaired ciliogenesis and the derangement of microtubule structures appeared along with the down-regulated expres-sion of RAB28,a ciliary vesicle *** line with the widespread neuronal loss,ependymal cell layers were *** proteomics analysis revealed that cell adhesion molecules including astrocyte-enriched ITGB8 and BCAR1 were altered in furin cKO mice;and astrocyte overgrowth was accompanied by the reduced expression of sox9,indicating a disrupted differ-entiation into ependymal ***,whereas alteration of RAB28 expression correlated with the role of vesicle trafficking in ciliogenesis,dysfunctional astrocytes might be involved in ependymal damage contributing to hydrocephalus in furin ckO *** structural and mo-lecular alterations provided a clue for further studying the potential mechanisms of furin.

关键词： Astrocyte Ciliogenesis Conditionalknockout Ependymal Furin Hydrocephalus Proteomics

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Goal-Oriented Control Systems(GOCS):From HOW to WHAT

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IEEE/CAA Journal of Automatica Sinica 2024年第4期11卷 816-819页

作者： wen-Hua chen the Department of Aeronautical and Automotive Engineering Loughborough UniversityLeicestershireLE113TUU.K.

Brief:New control theory is required to underpin safe design and deployment of future highly automated systems to deal with uncertain environments and complicated tasks,enabled by AI and other advanced ***-Oriented Control Systems offer potential to transform the control system design from currently instructing a control system how to perform a task to specifying what is to be achieved.

关键词： automated instru system

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Exploration prospects of oil and gas in the Northwestern part of the Offshore Indus Basin, Pakistan

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China Geology 2020年第4期3卷 633-642页

作者： jian-ming Gong Jing Liao Jie Liang Bao-hua Lei jian-wen chen Muhammad Khalid Syed Waseem Haider Ming Meng Qingdao Institute of Marine Geology China Geological SurveyQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and TechnologyQingdao 266061China College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China Pakistan Hydrographic Department 11 Liaquat Barracks Shahrae Faisal KARACHI-75530Pakistan National Institute of Oceanography St-47Block-1CliftonKarachiPakistan School of Ocean Sciences China University of Geosciences(Beijing)Beijing 100083China

Oil and gas resources are short in Pakistan and no commercially viable oil and gas sources have been yet discovered in its offshore areas up to *** this study,the onshore-offshore stratigraphic correlation and seismic data interpretation were conducted to determine the oil and gas resource potential in the Offshore Indus Basin,*** on the comprehensive analysis of the results and previous data,it is considered that the Cretaceous may widely exist and three sets of source rocks may be developed in the Offshore Indus *** presence of Miocene mudstones has been proven by drilling to be high-quality source rocks,while the Cretaceous and Paleocene–Eocene mudstones are potential source ***-lithologic traps are developed in the northwestern part of the basin affected by the strike-slip faults along Murray ***,the Cretaceous and Paleocene–Eocene source rocks are thick and are slightly affected by volcanic ***,it can be inferred that the northwestern part of Offshore Indus Basin enjoys good prospects of oil and gas resources.

关键词： Oil and gas Cretaceous Offshore Indus Basin Oil storage structure Oil and gas engineering Pakistan

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