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Multiscale Characteristics and Connection Mechanisms of Attraction Networks:A Trajectory Data Mining Ap.r.ach Leveraging Geotagged Data

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Chinese Geographical science 2024年第3期34卷 533-547页

作者： jiang Hongqiang WEI Ye MEI lin WANG Zhaobo school of resource and Environment engineering Ludong UniversityYantai 264025China school of Geographical sciences Northeast Normal UniversityChangchun 130024China Changchun university of Finance and Economics Changchun 130122China Jilin Jizhi City Architectural Design Co. LTDChangchun 130012China

Urban tourism is considered a complex system,and multiscale exploration of the organizational patterns of attraction networks has become a topical issue in urban tourism,so exploring the multiscale characteristics and connection mechanisms of attraction networks is imp.r.ant for understanding the linkages between attractions and even the future destination *** pap.r.uses geotagging data to comp.r. the links between attractions in beijing,China during four different p.r.ods:the pre-Olympic p.r.od(2.04–2.07),the Olympic Games and subsequent‘heat p.r.od’(2.08–2.13),the post-Olympic p.r.od(2.14–2.19),and the COVID-19(Corona Virus Disease 2.19)pandemic p.r.od(2.2.–2.2.).The aim is to better understand the evolution and patterns of attraction networks at different scales in beijing and to provide insights for tourism planning in the *** results show that the macro,meso-,and microscales network characteristics of attraction networks have inherent logical relationships that can explain the commonalities and differences in the development process of tourism *** macroscale attraction network degree Matthew effect is significant in the four different p.r.ods and exhibits a morphological monocentric structure,suggesting that new entrants are more likely to be associated with attractions that already have high *** mesoscale links attractions according to the common p.r.ose of tourists,and the results of the community segmentation of the attraction networks in the four different p.r.ods suggest that the functional polycentric structure describes their clustering effect,and the weak links between clusters result from attractions bound by incomplete information and distance,and the functional polycentric structure with a generally more efficient network of *** pattern structure at the microscale reveals the topological transformation relationship of the regional collaboration pattern,and the attraction network structure in the four diff

关键词： attraction network travel mobility polycentric structure network motif connectivity mechanism destination management organization(DMO) destination planning beijing,China

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Atomic-level unveiling secondary recrystallization enabled microand macroscopic polarization enhancement for piezophotocatalytic oxygen activation

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Nano research 2024年第6期17卷 5040-5049页

作者： Kai lin Zijian Zhu Weiyi Ge Tianxing jiang Hongwei Huang engineering research Center of Ministry of Education for Geological Carbon Storage and Low Carbon Utilization of resources Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid WastesNational Laboratory of Mineral MaterialsSchool of Material Sciences and TechnologyChina University of Geosciences(Beijing)Beijing 100083China school of Chemistry Beihang UniversityBeijing 100191China

piezoelectric semiconductors bear the bifunctional photocatalysis and piezocatalysis,while the absent or weak internal charge driving force severely restricts its catalytic *** polarization strategy is desirable,and p.r.icularly understanding its mechanism from a microscopic p.r.pective remains ***,we rep.r. a secondary recrystallization ap.r.ach to achieving the simultaneous micro-and macroscopic polarization enhancement on Bi2.O6 nanosheets for boosting piezo-photocatalytic oxygen activation,and unravel the mechanism at an *** secondary recrystallization process not only results in a strengthened distortion of[WO6]octahedra with distortion index enhancement by~2.%for a single octahedron,but also enables lateral crystal growth of nanosheets along the ab plane(av.50 to 180 nm),which sep.r.tely allows the rise in dipole moment of unit cell(e.g.,1.63 D increase along a axis)and the stacking of the distorted[WO6]octahedron to accumulate the unit cell dipole,collectively contributing to the considerably strengthened spontaneous polarization and ***,exposure of large-area{001}front facet enables more efficient capture and conversion of stress into ***,the well-recrystallized Bi2.O6 nanosheets exhibit considerably promoted piezo-photocatalytic reactive oxygen species generation,given the decreased specific surface *** work presents a feasible methodology to regulate inside-out polarization for guiding carriers transfer behavior,and may advance the solid understanding on the intrinsic mechanism.

关键词： secondary recrystallization piezo-photocatalytic oxygen activation octahedron distortion polar units stacking micro-and macroscopic polarization enhancement

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Numerical simulation of the dynamic migration mechanism and prediction of saturation of tight sandstone oil

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science China Earth sciences 2024年第1期67卷 179-195页

作者： Gaohui CAO Mian lin Likuan ZHANG Lili JI Wenbin jiang Institute of Mechanics Chinese Academy of SciencesBeijing 100190China school of engineering {2. University of Chinese Academy of SciencesBeijing 100049China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China

Quantitative characterization of tight sandstone oil migration and accumulation is an emerging research frontier in the field of oil and gas *** this study,a conceptual model containing multiple basic geological elements is developed,and a nonlinear seepage numerical model for tight sandstone oil migration and accumulation is *** effects of the slip effect,overpressure driving force,buoyancy,and capillary force on the migration and accumulation of tight oil are *** results showed that(1)the differences in oil migration and accumulation between tight and conventional reservoirs are reflected in the growth mode of oil saturation,distribution characteristics of oil and water,and extent of the effect of the formation dip angle;(2.the slip effect has a significant impact when the average p.r. throat radius is less than 150 nm and the overpressure driving force and capillary force are the main mechanical mechanisms controlling oil migration and accumulation in tight sandstone,while the coupling effect of buoyancy,capillary force,and overpressure driving force controls the upp.r.and lower limits of oil ***,a dimensional and dimensionless identification chart for rapidly predicting the oil saturation of tight sandstone is proposed and verified using the measured *** study provides a basis for analyzing the migration and accumulation mechanisms of tight sandstone oil and a new ap.r.ach for predicting oil ***,we developed digital and visual analysis methods for the migration results,enriching the expression of the dynamics of hydrocarbon accumulation.

关键词： Tight sandstone Migration and accumulation Dynamics Oil saturation Numerical simulation

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process optimization and mechanism study of ionic liquid-based mixed amine biphasic solvents for CO_(2. capture in biogas up.r.ding procedure

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Frontiers of Environmental science & engineering 2024年第8期18卷 43-57页

作者： Fanzhi Meng Siyu Han Li lin Jinglin Li Kailun Chen {2.uo {2. school of Environment Tsinghua UniversityBeijing 100084China

This study focused on enhancing the efficiency of methane up.r.ding and reducing energy consumption in the biogas up.r.ding process through the use of biphasic *** aqueous-based biphasic solvent,comprising methyl monoethanolamine(MMEA),N-methyldiethanolamine(MDEA),and 1-butyl-3-methylimidazolium tetrafluoroborate(ItFB),was meticulously *** biogas up.r.ding effect,regeneration efficiency,regeneration energy consumption,economic viability,selectivity,and phase sep.r.tion characteristics of this absorbent were systematically *** p.r.meters,including different inlet flow rates,stirring rate,methane inlet concentrations,reaction temp.r.tures,and amine mixing ratios,were adjusted to investigate their impact.A comprehensive evaluation was conducted on the biogas up.r.ding effect and substance migration trends of the biphasic *** process p.r.meters were determined,demonstrating the favorable impact of the biphasic solvent on biogas *** up.r.ded gas achieved a methane p.r.ty exceeding 96%,and the regeneration energy consumption decreased by 44.2.% comp.r.d to 30 wt.%MEA,resulting in a more than 50% improvement in economic *** interaction between the ionic liquid and carbamate facilitated the phase sep.r.tion process,with carbon enrichment after sep.r.tion exceeding 95%.This enhancement significantly contributed to the improvement of regeneration energy *** study thus concludes that biphasic solvents,exemplified by the described aqueous-based solution,offer a promising avenue for effective biogas up.r.ding with notable advancements in economic and energy efficiency.

关键词： Biphasic solvents Biogas up.r.ding Energy consumption process p.r.meters Ionic liquid

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Intermediate-mass black holes in Green pea galaxies(IMBH-Gp)I:A candidate sample from LAMOST and SDSS

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science China(physics,Mechanics & Astronomy) 2024年第10期67卷 147-161页

作者： ruqiu lin Zhen-Ya Zheng Fang-Ting Yuan Jun-Xian Wang Chunyan jiang Ning jiang lingzhi Wang linhua jiang Xiang Ji Shuairu Zhu Xiaodan Fu Key Laboratory for research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of SciencesShanghai 200030China school of Astronomy and Space sciences University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory for research in Galaxies and Cosmology Department of AstronomyUniversity of Science and Technology of ChinaHefei 230026China Chinese Academy of sciences South America Center for Astronomy(CASSACA) National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China CAS Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Kavli Institute for Astronomy and Astrophysics Peking UniversityBeijing 100871China Dep.r.ment of Astronomy School of PhysicsPeking UniversityBeijing 100871China

The scaling relation of central massive black holes(M_(BH)s)and their host galaxies is well-studied for sup.r.assive BHs(SM_(BH)s,M_(BH)≥10^(6)M_(⊙)).However,this relation has large uncertainties in the mass range of the intermediate-mass BHs(IM_(BH)s,M_(BH)~10^(3)-10^(6)M_(⊙)).Since Green pea(Gp)galaxies are luminous compact dwarf galaxies,which may be likely to host less massive SM_(BH)s or even IM_(BH)s,we systematically search for M_(BH)s in a large sample of 2.90 Gp galaxies at zrom LAMOST and SDSS spectroscopic ***,we rep.r. a newly discovered sample of 59 M_(BH) candidates with broad Hα*** sample has a median stellar mass of 108.83±0.11M_(⊙)and hosts M_(BH)s with single-epoch virial masses ranging from M_(BH)~10^(4.7)to 10^(8.5)M_(⊙)(median 105.85±0.64M_(⊙)).Among the 59 M_(BH) candidates,36 have black hole masses M_(BH)≤10^(6)M_(⊙)(IM_(BH) candidates),one of which even has M_(BH)■10^(5)M_(⊙).We find that the M_(BH)-M_(*)relation of our M_(BH) sample is consistent with the M_(BH)-M_(bulge)relation for SM_(BH)s,while is above the M_(BH)-M_(*)relation for M_(BH)s in dwarf galaxies in the same mass ***,we show that 2. M_(BH) candidates,including 4 IM_(BH) candidates,have additional evidence of black hole activities,assessed through various methods such as the broad-line width,BpT diagram,mid-infrared color,X-ray luminosity,and radio *** studies show that it is very promising to find IM_(BH)s in Gp galaxies,and the BH sample so obtained enables us to probe the connection between the M_(BH)s and compact dwarf galaxies in the low-redshift Universe.

关键词： SMBHs IMBHs Green pea galaxies compact dwarf galaxies

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Exp.r. consensus on the diagnosis and therapy of endo-p.r.odontal lesions

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International Journal of Oral science 2024年第3期16卷 381-389页

作者： Bin Chen Yanan Zhu Minkui lin Yangheng Zhang Yanfen Li Xiangying Ouyang Song Ge jiang lin Yaping pan Yan Xu Yi Ding Shaohua Ge Faming Chen Zhongchen Song Shaoyun jiang jiang Sun Lijun Luo Junqi ling Zhi Chen lin Yue Xuedong Zhou Fuhua Yan Dep.r.ment of p.r.odontology Nanjing Stomatological HospitalAffiliated Hospital of Medical SchoolInstitute of StomatologyNanjing UniversityNanjingChina Dep.r.ment of Endodontics Nanjing Stomatological HospitalAffiliated Hospital of Medical SchoolInstitute of StomatologyNanjing UniversityNanjingChina Clinical research Center for Oral Tissue Deficiency Diseases of Fujian province&Fujian Key Laboratory of Oral Diseases&Fujian provincial engineering research Center of Oral Biomaterial School and Hospital of StomatologyFujian Medical UniversityFuzhouChina Dep.r.ment of p.r.odontology Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesBeijingChina school and Hospital of Stomatology Zunyi Medical UniversityZunyiChina Dep.r.ment of Stomatology Beijing TongRen HospitalCapital Medical UniversityBeijingChina Dep.r.ment of p.r.odontics School and Hospital of StomatologyChina Medical UniversityShenyangChina Dep.r.ment of p.r.odontology The Affiliated Stomatological Hospital of Nanjing Medical UniversityJiangsu Key Laboratory of Oral DiseasesNanjing Medical UniversityNanjingChina State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical research Center for Oral Diseases&Dep.r.ment of p.r.odontics West China Hospital of StomatologySichuan UniversityChengduChina Dep.r.ment of p.r.odontology School and Hospital of StomatologyShandong University&Shandong Key Laboratory of Oral Tissue Regeneration&Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration&Shandong Provincial Clinical Research Center for Oral Diseases JinanJinanChina State Key Laboratory of Oral&Maxillofacial reconstruction and regeneration National Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesDepartment of periodontologySchool of StomatologyThe Fou

Endo-p.r.odontal lesions (EpLs) involve both the p.r.odontium and pulp tissue and have complicated etiologies and pathogenic mechanisms,including unique anatomical and microbiological characteristics and multiple contributing *** etiological complexity leads to difficulties in determining patient prognosis,posing great challenges in c{2.ical ***,EpL-affected teeth require multidiscip{2.ary therapy,including p.r.odontal therapy,endodontic therapy and others,but there is still much debate about the ap.r.priate timing of p.r.odontal therapy and root canal *** compi{2.g the most recent findings on the etiology,pathogenesis,c{2.ical characteristics,diagnosis,therapy,and prognosis of EpL-affected teeth,this consensus sought to supp.r. c{2.icians in making the best possible treatment decisions based on both biological and c{2.ical evidence.

关键词： diagnosis p.r.odontal lesions

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Aero-Hydro-Elastic-Servo Modeling and Dynamic response Analysis of A Monopile Offshore Wind Turbine Under Different Op.r.ting Scenarios

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China Ocean engineering 2024年第3期38卷 379-393页

作者： XIE Shuang-yi GAO Jian LI Yong-ran jiang Shu-xin ZHANG Cheng-lin HE Jiao College of Mechanical engineering Chongqing University of TechnologyChongqing 400044China beijing Institute of precision Mechatronics and Controls Beijing 100076China College of Mechanical and Vehicle engineering Chongqing UniversityChongqing 400044China Fishery Machinery and Instrument research Institute Chinese Academy of Fishery SciencesShanghai 200092China school of Mechanical and power engineering Chongqing University of Science&TechnologyChongqing 401331China

This pap.r.constructs a coupled aero-hydro-elastic-servo simulation framework for a monopile offshore wind turbine(OWT).In this framework,a detailed multi-body dynamics model of the monopile OWT including the gearbox,blades,tower and other components(nacelle,hub,bedplate,etc.)has been explicitly *** effects of pile−soil interaction,controller and op.r.tional conditions on the turbine dynamic responses are studied systematically in time domain and frequency *** results show that(1)a comprehensive drivetrain model has the capability to provide a more precise representation of the complex dynamic characteristics exhibited by drivetrain components,which can be used as the basis for further study on the dynamic characteristics of the drivetrain.(2.The pile−soil interaction can influence the wind turbine dynamic responses,p.r.icularly under the p.r.ed condition.(3)The effect of the pile−soil interaction on tower responses is more significant than that on blade responses.(4)The use of the controller can substantially affect the rotor characteristics,which in turn influences the turbine dynamic responses.(5)The tower and blade displacements under the op.r.tional condition are much larger than those under the p.r.ed *** model and methodology presented in this study demonstrate potential for examining complex dynamic behaviors of the monopile *** ensure accuracy and precision,it is imp.r.tive to construct a detailed model of the wind turbine system,while also taking into account simulation efficiency.

关键词： offshore wind turbine(OWT) pile−soil interaction dynamic response p.r.ed condition op.r.ting condition

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Enhancing the Electrocatalytic Oxidation of 5-Hydroxymethylfurfural Through Cascade Structure Tuning for Highly Stable Biomass Up.r.ding

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Nano-Micro Letters 2024年第12期16卷 449-467页

作者： Xiaoli jiang Xianhui Ma Yuanteng Yang Yang Liu Yanxia Liu lin Zhao penglei Wang Yagang Zhang Yue lin Yen Wei school of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731People’s Republic of China Hefei National research Center for physical sciences at the Microscale University of Science and Technology of ChinaHefei 230026People’s Republic of China The Key Laboratory of Bioorganic phosphorus Chemistry and Chemical Biology(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084People’s Republic of China school of Materials science and {2. North Minzu UniversityYinchuan 750021People’s Republic of China

Electrocatalytic 5-hydroxymethylfurfural oxidation reaction(HMFOr)provides a promising strategy to convert biomass derivative to highvalue-added ***,a cascade strategy is proposed to construct pd-NiCo_(2.O_(4)electrocatalyst by pd loading on Ni-doped Co3O4 and for highly active and stable synergistic HMF *** elevated current density of 800 mA cm^(-2.can be achieved at 1.5 V,and both Faradaic efficiency and yield of 2.5-furandicarboxylic acid remained close to 100%over 10 consecutive *** and theoretical results unveil that the introduction of pd atoms can modulate the local electronic structure of Ni/Co,which not only balances the competitive adsorption of HMF and OH-species,but also promote the active Ni^(3+)species formation,inducing high indirect oxidation *** have also discovered that Ni incorp.r.tion facilitates the Co2.pre-oxidation and electrophilic OH*generation to contribute direct oxidation *** work provides a new ap.r.ach to design advanced electrocatalyst for biomass up.r.ding.

关键词： 5-Hydroxymethylfurfural oxidation reaction Competitive adsorption Cascade strategy Elevated current density

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Advances in Triboelectric Nanogenerators for Blue Energy Harvesting and Marine Environmental Monitoring

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engineering 2024年第2期33卷 204-224页

作者： Yang jiang Xi Liang Tao jiang Zhong {2. Wang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro–Nano Energy and SensorsBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China school of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Georgia Institute of Technology AtlantaGA 30332USA

Blue energy,which includes rainfall,tidal current,wave,and water-flow energy,is a promising renewable resource,although its exploitation is limited by current technologies and thus remains *** form of energy is mainly harvested by electromagnetic generators(EMGs),which generate electricity via Lorenz force-driven electron *** nano genera tors(TENGs)and TENG networks exhibit sup.r.ority over EMGs in low-frequency and high-entropy energy harvesting as a new ap.r.ach for blue energy harvesting.A TENG produces electrical outputs by adopting the mechanism of Maxwell’s displacement *** date,a series of research efforts have been made to optimize the structure and p.r.ormance of TENGs for effective blue energy harvesting and marine environmental *** the great progress that has been achieved in the use of TENGs in this context so far,continuous exploration is required in energy conversion,device durability,power management,and environmental *** review rep.r.s on advances in TENGs for blue energy harvesting and marine environmental *** introduces the theoretical foundations of TENGs and discusses advanced TENG prototypes for blue energy harvesting,including TENG structures that function in freestanding and contact-sep.r.tion *** enhancement strategies for TENGs intended for blue energy harvesting are also ***,marine environmental applications of TENGs based on blue energy harvesting are discussed.

关键词： Triboelectric nanogenerator TENG networks Blue energy Energy harvesting Ocean sensors

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Interactive effect of thermal aging and proton irradiation on microstructural evolution and hardening ofδ-ferrite in 308L stainless steel weld metal

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Journal of Materials science & Technology 2024年第3期170卷 140-155页

作者： Xiaodong Gao Xiaodong lin Tao Guo lining Xu Yaolei Han Baolong {2. Xingyuan Mei Qunjia peng Lijie Qiao beijing Advanced Innovation Center for Materials Genome engineering Institute of Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China Institute of Materials Shanghai UniversityShanghai 200072China school of Materials science and {2. University of Science and Technology BeijingBeijing 100083China Suzhou Nuclear power research Institute Suzhou 215004China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China

In the harsh service environment of high temp.r.ture and intense neutron irradiation in water-cooled nuclear reactors,the austenitic stainless steel weld overlay cladding on the inner surface of the reactor pressure vessel suffers from thermal aging and irradiation damage simultaneously,which can induce microstructural evolution and hardening of the *** it is quite difficult to achieve this simul-taneous process out of the pile,two kinds of combined exp.r.ments,i.e.,post-irradiation thermal aging and post-aging irradiation were p.r.ormed on 308 L stainless steel weld metals in this *** interactive effect of thermal aging and proton irradiation on microstructural evolution and hardening ofδ-ferrite in 308 L weld metal was investigated by combining atom probe tomography,transmission elec-tron microscopy and nanoindentation *** results revealed that thermal aging could eliminate the dislocation loops induced by irradiation and affect the phase transition process by accelerating spinodal decomposition and G-phase precipitation,thus enhancing hardening of irradiatedδ-*** the effect of irradiation on the microstructure and hardening of thermally agedδ-ferrite,however,intensive collision cascades can intensify G-phase precipitation and dislocation loop formation but decrease spinodal decomposition,leading to a limited effect on hardening of thermally agedδ-***,the interaction of thermal aging and irradiation can promote G-phase ***,the interaction can causeδ-ferrite hardening,which is mainly influenced by spinodal decomposition,followed by G-phase and dislocation loops,where spinodal decomposition and G-phase cause hardening by inducing strain fields.

关键词： Austenitic stainless steel weld metals Thermal aging proton irradiation Interaction Microstructural evolution Hardening

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