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13th International Field Exploration and development Conference, IFEdC 2023

作者： Li, Ning ren, Liang Liu, Zong-Shang ren, Shu-Hang Xiang, Chong Wu, Bo-Yu Cai, Xuan Research Institute of Petroleum Exploration and Development PetroChina Beijing China Artificial Intelligence Technology R&D Center for Exploration and Development CNPC Beijing100083 China

ISBN: (纸本)9789819702718

With the gradual application of knowledge atlas technology in oil and gas exploration and development fields such as intelligent evaluation of oil and gas reservoir and intelligent identification of oil and gas reservoir through logging, the application of knowledge Atlas in oil and gas industry has attracted more and more attention. In view of the problem of knowledge expression and application in E&P sector field, a professional word bank of E&P was established based on web crawler technology, a feature corpus of E&P field was established by extracting E&P sector related achievement documents and literature data, and the principle of E&P knowledge graph ontology construction was formulated and the construction process was defined. The multistage classification system of oil and gas exploration and development knowledge atlas ontology is described and constructed from multiple dimensions such as sector, object and feature, and the knowledge atlas ontology model of oil and gas exploration and development sector domain is formed, which lays a foundation for the in-depth application of knowledge atlas technology in petroleum exploration and development. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Ontology

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Built-in electric field induced by defected carbons adjacent to graphitic nitrogen valley for efficient oxygen reduction reaction and zinc-air batteries

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Journal of Energy Chemistry 2025年第4期103卷 813-825页

作者： Na Li Tingting Ma Huihui Wang Jiayi Li dingrong Qiu Zhen Meng Jiangdu Huang Lijun Sui Faming Han Huidan Lu Yongping Liu Sundaram Chandrasekaran Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional MaterialsCollege of Chemistry and BioengineeringGuilin University of TechnologyGuilin 541004GuangxiChina Guangxi Colleges and Universities Key Laboratory of Surface and Interface Electrochemistry College of Chemistry and BioengineeringGuilin University of TechnologyGuilin 541004GuangxiChina Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials Institute of New Energy for VehiclesSchool of Materials Science and EngineeringTongji UniversityShanghai 201804China

rational design of defected carbons adjacent to nitrogen(N)dopants is a fascinating but challenging approach for enhancing the catalytic performance of N-doped ***,the combined effect of heteroatom doping and defect engineering can efficiently increase the oxygen reduction reaction(Orr)ability of inactive carbons through charge ***,we report that an enhanced built-in electric field caused by the combined effect of N-doping and carbon defects in the twodimensional(2d)mesoporous N-doped carbon nano flakes(NCNF)is a promising technique for improving Orr *** a result,the NCNF exhibits more promising Orr activity than Pt/C and similar performance with reported robust *** experimental and theoretical investigations suggest that topologically defected carbon adjacent to the graphitic valley nitrogen is a real active site,rendering optimal energy for the adsorption of Orr intermediates and lowering the total energy barrier for ***,NCNF-based Zn-air batteries exhibited an excellent power density and specific capacity of~121.10 mW cm^(-2)and~679.86 mA h g_(Zn)^(-1),*** study not only offers new insights into defected carbons with graphitic valley N for Orr but also proposes novel catalyst design principles and provides a solid grasp of the built-in electric field effect on the Orr performance of defective catalysts.

关键词： defective carbon Built-in electric field Graphitic valley nitrogen-doped carbon defects Oxygen reduction reaction Zn-air batteries

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Fracture Characterisation Methods and Application of Unconventional Oil and Gas reservoirs in reservoir Numerical Simulation

Fracture Characterisation Methods and Application of Unconve...

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2023 SPE/IATMI Asia Pacific Oil and Gas Conference and Exhibition, APOG 2023

作者： Li, Qiaoyun Wu, Shuhong Cao, Zijian Wang, Baohua Li, Hua Jia, Han RIPED PetroChina China Artificial Intelligence Technology R&D Center for Exploration and Development CNPC China

ISBN: (纸本)9781613999813

It's necessary to solve the problem of fine characterization and efficient simulation of three types of fractures, i.e. natural fractures, artificial fractures and complex fracture network, for the development optimization design and scheme adjustment of unconventional oil and gas reservoirs. This paper describes a set of efficient and practical fracture characterization techniques for reservoir numerical model, which integrates various numerical simulation methods of fractures in different scales, including single-medium equivalent model, LGr model, double-medium model, MINC model, non-structural discrete fracture model and embedded discrete fracture model. For different reservoir types and different fracture dimensions, different models are adopted to depict the spatial distribution and fluid flow characteristics of fracture-matrix, matrix-matrix and fracture-fracture. The application in a shale gas shows that the set of fracture characterization methods can accurately describe the shape, geometric characteristics and spatial position of natural fractures, artificial fractures and fracture network. The methods also can simulate the fluid flow characteristics in multi-scale fracture network efficiently, and accurately predict the productivity of fracture network. Copyright 2023, Society of Petroleum Engineers.

关键词： Natural fractures

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Non-invasive Healthcare Analytical Platform Based on Organic Electrochemical Transistors

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Chemical research in Chinese Universities 2024年第5期40卷 824-848页

作者： HU Xingyu MAO Ning YAN Xinwen HUANG Ling LIU Xu YANG Huige SUN Qingqing LIU Xuying JIA Hanyu School of Materials&Engineering Zhengzhou UniversityZhengzhou450001P.R.China Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education&Hubei Key Laboratory of Catalysis and Materials Science Hubei R&D Center of Hyperbranched Polymers Synthesis and ApplicationsSouth-Central University for NationalitiesWuhan430074P.R.China Science&Technology Innovation Center for Advanced Materials of Intelligent Equipment Longmen LaboratoryLuoyang471000P.R.China

Non-invasive bioelectronics,especially organic electrochemical transistors(OECTs),have drawn extensive attentions of academical and medical communities by virtue of their efficient bio-electronic interfacing,water-involved ionic transport,excellent ionic-electronic coupling,ultralow power consumption,wide detectable range,and outstanding detection *** structure diversity,low-temperature solution processability,facile bio/chemical functionalization,and excellent biocompatibility of organic mixed ionic-electronic conductors(OMIECs)render OECTs particularly suitable for non-invasive or minimally invasive healthcare analytical ***,we comprehensively review recent advances of the non-invasive analytical healthcare applications based on OECTs,especially on the detection of biomarkers or metabolites in the excretory biofluids,as well as the recording of electrophysiological signals.A brief introduction of OECT and its comparison with other organic thin-film transistors upon device configuration and working mechanism are firstly ***-of-the-art non-invasive OECT-based biosensors are summarized on their detection of ionic and molecular biomarkers,following with circuit design strategies of OECTs for real-time and in-situ electrophysiological recording from skin *** conclusion,remaining barriers and future challenges of non-invasive OECT-based bioelectronics towards lower detection limit,more accurate quantitative relationship between analyte concentrations and measured parameters,more intimate device-tissue interface,and long-term operation stability are deeply analyzed with a critical outlook.

关键词： Organic electrochemical transistor Non-invasive Bioelectronics Ion-selective Electrophysiological monitoring

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Ongoing Evolution of drAM Scaling via Third dimension -Vertically Stacked drAM

Ongoing Evolution of DRAM Scaling via Third Dimension -Verti...

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2023 IEEE Symposium on VLSI technology and Circuits, VLSI technology and Circuits 2023

作者： Han, J.W. Park, S.H. Jeong, M.Y. Lee, K.S. Kim, K.N. Kim, H.J. Shin, J.C. Park, S.M. Shin, S.H. Park, S.W. Lee, K.S. Lee, J.H. Kim, S.H. Kim, B.C. Jung, M.H. Yoon, I.Y. Kim, H. Jang, S.U. Park, K.J. Kim, Y.K. Kim, I.G. Oh, J.H. Han, S.Y. Kim, B.S. Kuh, B.J. Park, J.M. Dram Technology Development Hwaseong Korea Republic of Next Generation Process Development Samsung R&d Center Hwaseong Korea Republic of

ISBN: (纸本)9784863488069

For the past decades, the density of drAM has been remarkably increased by making access transistors and capacitors smaller in size per unit area. However, shrinking devices far beyond the 10 nm process node increasingly poses process and reliability challenges. As Flash technology made a pivotal and successful innovation via 3d NANd, drAM technology may also adopt vertical stacking memory cells. Vertically stacked drAM (VS-drAM) continues to increase bit density on a die by increasing the number of layers along with reducing the size of the transistor. In this paper, the opportunities and challenges of VS-drAM are discussed. © 2023 JSAP.

关键词： dynamic random access storage

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Inhibiting Voltage decay in Li-rich Layered Oxide Cathode:From O3-Type to O2-Type Structural design

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Nano-Micro Letters 2024年第12期16卷 81-102页

作者： Guohua Zhang Xiaohui Wen Yuheng Gao renyuan Zhang Yunhui Huang Institute of New Energy for Vehicles Shanghai Key Laboratory for R&D and Application of Metallic Functional MaterialsSchool of Materials Science and EngineeringTongji UniversityShanghai 201804People’s Republic of China Contemporary Amperex Technology Co. LtdNingde 352100People’s Republic of China State Key Laboratory of Material Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiPeople’s Republic of China

Li-rich layered oxide(LrLO)cathodes have been regarded as promising candidates for next-generation Li-ion batteries due to their exceptionally high energy density,which combines cationic and anionic redox ***,continuous voltage decay during cycling remains the primary obstacle for practical applications,which has yet to be fundamentally *** is widely acknowledged that voltage decay originates from the irreversible migration of transition metal ions,which usually further exacerbates structural evolution and aggravates the irreversible oxygen redox ***,constructing O2-type structure has been considered one of the most promising approaches for inhibiting voltage *** this review,the relationship between voltage decay and structural evolution is systematically *** to suppress voltage decay are systematically ***,the design of O2-type structure and the corresponding mechanism of suppressing voltage decay are comprehensively ***,the reported O2-type LrLO cathodes still exhibit partially disordered structure with extended ***,the factors that may cause the irreversible transition metal migrations in O2-type LrLO materials are also explored,while the perspectives and challenges for designing high-performance O2-type LrLO cathodes without voltage decay are proposed.

关键词： Lithium-ion batteries Li-rich layered oxide Voltage decay Migration of transition metal ions O2-type structural design

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Evolution of surface quality in micromilling Ti-6Al-4V alloy with increasing machined length 7

Evolution of surface quality in micromilling Ti-6Al-4V alloy...

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7th CIrP Conference on Surface Integrity, CSI 2024

作者： Gonçalves, Maria Clara Coimbra Alsters, rob Curtis, david M'Saoubi, rachid Ghadbeigi, Hassan University of Sheffield Mechanical Engineering Department Mappin Street Sheffield United Kingdom R&D Materials and Technology Development Seco Tools AB Zandterweg 14 Lottum5973 RC Netherlands Advanced Manufacturing Research Centre University of Sheffield RotherhamS60 5TZ United Kingdom R&D Materials and Technology Development Seco Tools AB Fagersta737 82 Sweden Division of Production and Materials Engineering Lund University Ole Römers väg 1 Lund221 00 Sweden

Micromilling is a subtractive manufacturing process that presents challenges due to scale effects and rapid tool wear. To understand the evolution of surface quality when increasing the machined length during the micromilling process, this study assessed the surface roughness, topography, and defects of slots micromilled on Ti-6Al-4V. For the experiments, 1 mm diameter flat end mills were employed, and the cutting parameters were varied using a full factorial design. Subsequently, the surface texture field parameter Sa was assessed every 20 mm, up until the machining length of 260 mm. The analysed results led to the conclusion that, for the adopted set of parameters and the machining length of up to 260 mm, surface roughness was not significantly correlated to the machined length in the micromilling process of Ti-6Al-4V, as the Pearson coefficient, obtained from the correlation analysis, was -0.052. However, the surface roughness was mainly influenced by feed rate (Pearson coefficient of 0.82), with higher feed rates leading to roug surfaces (up to Sa = 0.4 μm) duhere to the tool load increase that causes wider feed marks on the surface. regarding the feed marks, they were affected by the tool rotational frequency due to system vibration. Additionally, surface defects of adhered material, smearing, tearing and side flow were observed. For lower feeds, material adhesion was the main type of defect observed, while higher feed rates favoured the side flow phenomenon. © 2024 The Authors. Published by Elsevier B.V.

关键词： Surface roughness

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recovery of rare earth elements and thorium from acid leaching residue of ionic rare earth concentrates

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Journal of rare Earths 2025年第4期43卷 794-804,I0006页

作者： Qiaofa Lan Xiaolin Zhang Fei Niu donghui Liu Leiting Shen Youming Yang Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou341000China National Engineering Research Center for Ionic Rare Earth Ganzhou341000China School of Metallurgy and Environment Central South UniversityChangsha410083China Guangdong Provincial Key Lab of R&D for Resource Utilization and Disposal of Hazardous Liquids Shenzhen518057China School of Rare Earth and New Materials Engineering Gannan University of Science and TechnologyGanzhou341000China Key Laboratory of Development and Application of Ionic Rare Earth Resources(Jiangxi University of Science and Technology) Ministry of EducationGanzhou341000China

The acid leaching residue(ALr)of ionic rare earth(IrE)concentrates containing radioactive elements such as thorium(Th)is classified as low-level radioactive *** holds valuable strategic resources such as rare earth and Th,while improper long-term heaping storage of ALr poses a substantial environmental *** paper proposes a comprehensive process involving low-temperature roasting,hydrochloric acid leaching,single extractant enrichment,and stepwise stripping to recover rare earth elements and thorium from *** achieved leaching efficiencies are 80.11%of LnY,99.43%of Sc(Ⅲ),and 98.67%of Th(Ⅳ)after the carbonization of the organic phase in the ALr through low-temperature *** large amounts of acid and impurities present in the leachate,2-ethylhexyl phosphonic acid mono 2-ethylhexyl ester(HEHEHP)still exhibits nearly 100%extraction efficiency for Sc(Ⅲ)and Th(Ⅳ).The effective separation of LnY,Th(Ⅳ),and Sc(Ⅲ)was achieved by implementing fractional extraction enrichment of Th(Ⅳ)and Sc(Ⅲ),followed by Th(Ⅳ)removal through H_(2)SO_(4)and Sc(Ⅲ)removal via NaOH from the loaded organic *** scheme successfully achieves a recovery of rE and Th and offers a viable solution for the safe disposal of ALr.

关键词： Low-level radioactive waste rare earths Thorium Solvent extraction resource recovery

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development of Holonic Autonomous Mobile robot for drilling Tasks 23

Development of Holonic Autonomous Mobile Robot for Drilling ...

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23rd International Conference on Control, Automation and Systems, ICCAS 2023

作者： Yang, dayeon Ju, Chanyoung Korea Institute of Industrial Technology Automotive Materials & Components R&d Group Gwangju61012 Korea Republic of

ISBN: (纸本)9788993215274

关键词： Selected keywords relevant to the subject

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Spot Welding Characteristics on the Manufacturing Method of Li-Ion Battery Packs for Electric Vehicle 23

Spot Welding Characteristics on the Manufacturing Method of ...

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23rd International Conference on Control, Automation and Systems, ICCAS 2023

作者： Angani, A. Hwang, H.M. Cha, H.r. Kim, Y.G. Automotive Materials & Components R&d Group Korea Institute of Industrial Technology Gwangju61012 Korea Republic of

ISBN: (纸本)9788993215274

Spot welding, Li-ion battery packs, used in automotive and stationary applications, require a large number of cells to be interconnected. Spot welding is a common technique employed to join the tabs of pouch cells to the bus-bar. However, there is limited research on the joint characteristics regarding electrical resistance and temperature increase during charge-discharge cycles. In this study, a electrical and thermal properties of spot welded joints between 0.3mm nickel tabs and 1.0mm bus bar, using only a thin needles-shaped upper electrode at constant current and voltage and forced air cooling, and two types of battery packs rated capacity of 0.5KW and 1KW were manufactured using a cylindrical cell (Li-ion battery) with a nominal voltage of 3.7 V and a rated current of 5Ah. In order to improve the efficiency of battery quality, welding time and temperature raise were evaluated from the experiment. © 2023 ICrOS.

关键词： Heat transfer

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