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Microscopic pore-throat structure and fluid mobility of tight sandstone reservoirs in multi-provenance systems,Triassic Yanchang formation,Jiyuan area,Ordos Basin 被引量:1
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作者 Quanpei Zhang Chen Yang +5 位作者 Ye Gu Yu Tian Hui Liu Wen Xiao Zhikun Wang Zhongrong Mi 《Energy Geoscience》 2025年第2期381-393,共13页
The tight sandstone reservoirs in the first sub-member of Chang 7 member(Chang 71)of Triassic Yanchang Formation in the Jiyuan area,Ordos Basin,show significant variations in microscopic pore-throat structure(PTS)and ... The tight sandstone reservoirs in the first sub-member of Chang 7 member(Chang 71)of Triassic Yanchang Formation in the Jiyuan area,Ordos Basin,show significant variations in microscopic pore-throat structure(PTS)and fluid mobility due to the influences of the northeast and northwest dual provenance systems.This study performed multiple experimental analyses on nine samples from the area to determine the petrological and petrophysical properties,as well as the PTS characteristics of reservoirs in different provenance-controlled regions.On this basis,the pore-throat size distribution(PSD)obtained from high-pressure mercury injection(HPMI)was utilized to convert the NMR movable fluid T2spectrum,allowing for quantitative characterization of the full PSD and the occurrence characteristics of movable fluids.A systematic analysis was conducted on the primary controlling factors affecting fluid mobility in the reservoir.The results indicated that the lithology in the eastern and western regions is lithic arkose.The eastern sandstones,being farther from the provenance,exhibit higher contents of feldspar and lithic fragments,along with the development of more dissolution pores.The reservoir possesses good petrophysical properties,low displacement pressure,and high pore-throat connectivity and homogeneity,indicating strong fluid mobility.In contrast,the western sandstones,being nearer to the provenance,exhibit poor grain sorting,high contents of lithic fragments,strong compaction and cementation effects,resulting in poor petrophysical properties,and strong pore-throat heterogeneity,revealing weak fluid mobility.The range of full PSD in the eastern reservoir is wider than that in the western reservoir,with relatively well-developed macropores.The macropores are the primary space for occurrence of movable fluids,and controls the fluid mobility of the reservoir.The effective porosity of movable fluids(EPMF)quantitatively represents the pore space occupied by movable fluids within the reservoir and correlates well with porosity,permeability,and PTS parameters,making it a valuable parameter for evaluating fluid mobility.Under the multi-provenance system,the eastern and western reservoirs underwent different sedimentation and diagenesis processes,resulting in differential distribution of reservoir mineral components and pore types,which in turn affects the PTS heterogeneity and reservoir quality.The composition and content of reservoir minerals are intrinsic factors influencing fluid mobility,while the microscopic PTS is the primary factor controlling it.Low clay mineral content,welldeveloped macropores,and weak pore-throat heterogeneity all contribute to the storage and seepage of reservoir fluids. 展开更多
关键词 Pore-throat structure Fluid mobility Tight sandstone reservoir Multi-provenance system Ordos Basin
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Relationship between pore throat structure and crude oil mobility of full particle sequence reservoirs in Permian Fengcheng Formation,Mahu Sag,Junggar Basin,NW China 被引量:1
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作者 TANG Yong JIA Chengzao +8 位作者 CHEN Fangwen HE Wenjun ZHI Dongming SHAN Xiang YOU Xincai JIANG Lin ZOU Yang WU Tao XIE An 《Petroleum Exploration and Development》 2025年第1期112-124,共13页
Based on the experimental results of casting thin section,low temperature nitrogen adsorption,high pressure mercury injection,nuclear magnetic resonance T2 spectrum,contact angle and oil-water interfacial tension,the ... Based on the experimental results of casting thin section,low temperature nitrogen adsorption,high pressure mercury injection,nuclear magnetic resonance T2 spectrum,contact angle and oil-water interfacial tension,the relationship between pore throat structure and crude oil mobility characteristics of full particle sequence reservoirs in the Lower Permian Fengcheng Formation of Mahu Sag,Junggar Basin,are revealed.(1)With the decrease of reservoir particle size,the volume of pores connected by large throats and the volume of large pores show a decreasing trend,and the distribution and peak ranges of throat and pore radius shift to smaller size in an orderly manner.The upper limits of throat radius,porosity and permeability of unconventional reservoirs in Fengcheng Formation are approximately 0.7μm,8%and 0.1×10^(−3)μm^(2),respectively.(2)As the reservoir particle size decreases,the distribution and peak ranges of pores hosting retained oil and movable oil are shifted to a smaller size in an orderly manner.With the increase of driving pressure,the amount of retained and movable oil of the larger particle reservoir samples shows a more obvious trend of decreasing and increasing,respectively.(3)With the increase of throat radius,the driving pressure of reservoir with different particle levels presents three stages,namely rapid decrease,slow decrease and stabilization.The oil driving pressures of various reservoirs and the differences of them decrease with the increase of temperature and obviously decrease with the increase of throat radius.According to the above experimental analysis,it is concluded that the deep shale oil of Fengcheng Formation in Mahu Sag has great potential for production under geological conditions. 展开更多
关键词 Junggar Basin Mahu Sag Lower Permian Fengcheng Formation full particle sequence reservoir pore throat structure crude oil mobility whole petroleum system
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Millimeter-wave modeling based on transformer model for InP high electron mobility transistor
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作者 ZHANG Ya-Xue ZHANG Ao GAO Jian-Jun 《红外与毫米波学报》 北大核心 2025年第4期534-539,共6页
In this paper,the small-signal modeling of the Indium Phosphide High Electron Mobility Transistor(InP HEMT)based on the Transformer neural network model is investigated.The AC S-parameters of the HEMT device are train... In this paper,the small-signal modeling of the Indium Phosphide High Electron Mobility Transistor(InP HEMT)based on the Transformer neural network model is investigated.The AC S-parameters of the HEMT device are trained and validated using the Transformer model.In the proposed model,the eight-layer transformer encoders are connected in series and the encoder layer of each Transformer consists of the multi-head attention layer and the feed-forward neural network layer.The experimental results show that the measured and modeled S-parameters of the HEMT device match well in the frequency range of 0.5-40 GHz,with the errors versus frequency less than 1%.Compared with other models,good accuracy can be achieved to verify the effectiveness of the proposed model. 展开更多
关键词 transformer model neural network high electron mobility transistor(HEMT) small signal model
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Wired for a New Drive Liuzhou’s EV ecosystem shows how affordability and innovation can steer the future of mobility
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作者 Antony Hardi 《China Report ASEAN》 2025年第5期52-53,共2页
Imagine a city that seems to hum rather than roar-a place where innovation moves at the pace of everyday life instead of like the flashy glamor of high-end tech hubs.This is Liuzhou,a city in southern China that is qu... Imagine a city that seems to hum rather than roar-a place where innovation moves at the pace of everyday life instead of like the flashy glamor of high-end tech hubs.This is Liuzhou,a city in southern China that is quietly shaping the future of electric vehicles(EVs).It has become an unlikely yet powerful engine of change in the world of clean mobility. 展开更多
关键词 electric vehicles AFFORDABILITY engine change Liuzhou clean mobility mobility innovation electric vehicles evs
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AI-Defined Mobility in Spotlight at 2025 Shanghai Auto Show--China is leading the development of the next generation intelligent-vehicle technologies
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作者 LI YIN 《ChinAfrica》 2025年第6期59-59,共1页
The 2025 Shanghai Auto Show reaffirmed its role as one of the world’s most influential automotive industry events,offering a panoramic view of the future shaped by intelligent and electrified vehicles.With over 200 n... The 2025 Shanghai Auto Show reaffirmed its role as one of the world’s most influential automotive industry events,offering a panoramic view of the future shaped by intelligent and electrified vehicles.With over 200 new models on display-85 percent of them new energy vehicles-this year’s show spotlighted how the global auto industry is pivoting rapidly towards an era of software-defined and AI-powered mobility. 展开更多
关键词 shanghai auto show software defined mobility ai defined mobility intelligent vehicle technologies ai powered mobility new energy vehicles intelligent electrified vehicles
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High mobility group box 1 in the central nervous system:regeneration hidden beneath inflammation
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作者 Hanki Kim Bum Jun Kim +4 位作者 Seungyon Koh Hyo Jin Cho Xuelian Jin Byung Gon Kim Jun Young Choi 《Neural Regeneration Research》 SCIE CAS 2025年第1期107-115,共9页
High-mobility group box 1 was first discovered in the calf thymus as a DNA-binding nuclear protein and has been widely studied in diverse fields,including neurology and neuroscience.High-mobility group box 1 in the ex... High-mobility group box 1 was first discovered in the calf thymus as a DNA-binding nuclear protein and has been widely studied in diverse fields,including neurology and neuroscience.High-mobility group box 1 in the extracellular space functions as a pro-inflammatory damage-associated molecular pattern,which has been proven to play an important role in a wide variety of central nervous system disorders such as ischemic stroke,Alzheimer’s disease,frontotemporal dementia,Parkinson’s disease,multiple sclerosis,epilepsy,and traumatic brain injury.Several drugs that inhibit high-mobility group box 1 as a damage-associated molecular pattern,such as glycyrrhizin,ethyl pyruvate,and neutralizing anti-high-mobility group box 1 antibodies,are commonly used to target high-mobility group box 1 activity in central nervous system disorders.Although it is commonly known for its detrimental inflammatory effect,high-mobility group box 1 has also been shown to have beneficial pro-regenerative roles in central nervous system disorders.In this narrative review,we provide a brief summary of the history of high-mobility group box 1 research and its characterization as a damage-associated molecular pattern,its downstream receptors,and intracellular signaling pathways,how high-mobility group box 1 exerts the repair-favoring roles in general and in the central nervous system,and clues on how to differentiate the pro-regenerative from the pro-inflammatory role.Research targeting high-mobility group box 1 in the central nervous system may benefit from differentiating between the two functions rather than overall suppression of high-mobility group box 1. 展开更多
关键词 central nervous system damage-associated molecular pattern ethyl pyruvate glycyrhizzin high mobility group box 1 INFLAMMATION neural stem cells NEURODEVELOPMENT oligodendrocyte progenitor cells redox status REGENERATION
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The influence ofⅤ/Ⅲratio on electron mobility of the InAs_(x)Sb_(1-x)layers grown on GaAs substrate by molecular beam epitaxy
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作者 ZHANG Jing YANG Zhi +3 位作者 ZHENG Li-Ming ZHU Xiao-Juan WANG Ping YANG Lin 《红外与毫米波学报》 北大核心 2025年第1期25-32,共8页
This paper discusses the influence of Sb/In ratio on the transport properties and crystal quality of the 200 nm InAs_(x)Sb_(1-x)thin film.The Sb content of InAs_(x)Sb_(1-x)thin film in all samples was verified by HRXR... This paper discusses the influence of Sb/In ratio on the transport properties and crystal quality of the 200 nm InAs_(x)Sb_(1-x)thin film.The Sb content of InAs_(x)Sb_(1-x)thin film in all samples was verified by HRXRD of the symmetrical 004 reflections and asymmetrical 115 reflections.The calculation results show that the Sb component was 0.6 in the InAs_(x)Sb_(1-x)thin film grown under the conditions of Sb/In ratio of 6 and As/In ratio of 3,which has the highest electron mobility(28560 cm^(2)/V·s)at 300 K.At the same time,the influence ofⅤ/Ⅲratio on the transport properties and crystal quality of Al_(0.2)In_(0.8)Sb/InAs_(x)Sb_(1-x)quantum well heterostructures also has been investigated.As a result,the Al_(0.2)In_(0.8)Sb/InAs_(0.4)Sb_(0.6)quantum well heterostructure with a channel thickness of 30 nm grown under the conditions of Sb/In ratio of 6 and As/In ratio of 3 has a maximum electron mobility of 28300 cm^(2)/V·s and a minimum RMS roughness of 0.68 nm.Through optimizing the growth conditions,our samples have higher electron mobility and smoother surface morphology. 展开更多
关键词 molecular beam epitaxy InAs_(x)Sb_(1-x) Ⅴ/Ⅲratio high electron mobility
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Shubnikov-de Haas Quantum Oscillations with Large Spin Splitting in High-Mobility Al_(0.8)Ga_(0.2)Sb/InAs/Al_(0.8)Ga_(0.2)Sb Quantum-Well Heterostructures
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作者 Zhenghang Zhi Hanzhi Ruan +6 位作者 Jiuming Liu Xinpeng Li Yong Zhang Qi Yao Chenjia Tang Yujie Xiao Xufeng Kou 《Chinese Physics Letters》 2025年第9期208-213,共6页
We report the epitaxial growth of high-quality Al_(0.8)Ga_(0.2)Sb/InAs/Al_(0.8)Ga_(0.2)Sb quantum well films characterized by high carrier mobility and strong spin-orbit coupling.By appropriately optimizing the Al-to-... We report the epitaxial growth of high-quality Al_(0.8)Ga_(0.2)Sb/InAs/Al_(0.8)Ga_(0.2)Sb quantum well films characterized by high carrier mobility and strong spin-orbit coupling.By appropriately optimizing the Al-to-Ga ratio in the AlGaSb barrier layer,the quantum confinement of the heterostructure is significantly enhanced.Alongside a giant magnetoresistance ratio of 3.65×10^(5)%,the two-carrier transport model from Hall measurements reveals an ultra-high electron mobility of 7.18×10^(5)cm^(2)·V^(-1)·s^(-1)at low temperatures.Meanwhile,pronounced Shubnikov-de Haas(SdH)quantum oscillations persist up to 30 K,and their single-frequency feature indicates a well-defined Fermi surface without subband mixing in the two-dimensional electron gas channel.Moreover,the large effective g-factor and tilted-field-induced orbital effect lead to the observation of split SdH peaks at large magnetic fields.Our results validate that AlGaSb/InAs quantum well heterostructures are suitable candidates for constructing energy-efficient topological spintronic devices. 展开更多
关键词 giant magnetoresistance ratio electron mobility quantum confinement Shubnikov de Haas algasb barrier layerthe Quantum Oscillations hall measurements high carrier mobility
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Denmark’s National Strategy of Green Mobility and Its Impacts
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作者 LIU Suli 《International Relations and Diplomacy》 2025年第4期190-195,共6页
Denmark has now established itself as a standout in the global field of sustainable transportation,and behind this achievement lies a comprehensive national green mobility strategy-one that not only drives shifts towa... Denmark has now established itself as a standout in the global field of sustainable transportation,and behind this achievement lies a comprehensive national green mobility strategy-one that not only drives shifts toward low-carbon travel but also makes cities more livable.This article explores the core components of this strategy,including long-term policies,infrastructure development,incentive measures,and governance collaboration,while also analyzing its impacts on the environment,public health,and the economy.Drawing on practices in Copenhagen and insights from bicycle urban planning,the research finds that Denmark’s integrated approach serves as a replicable model.Notably,it highlights the importance of aligned national-local implementation,equitable infrastructure development,and cultural acceptance of green mobility. 展开更多
关键词 Denmark green mobility national strategy sustainable transportation
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Arsenic mobility and microbial community composition in the sediments of coastal wetlands driven by tidal action
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作者 Ting Luo Wei Qin +4 位作者 Yuzhong Wang Yan Sun Sheng Kong Yang Zou Weihao Liang 《Journal of Environmental Sciences》 2025年第7期99-108,共10页
Arsenic(As)pollution in coastal wetlands has been receiving growing attention.However,the exact mechanism of As mobility driven by tidal action is still not completely understood.The results reveal that lower total As... Arsenic(As)pollution in coastal wetlands has been receiving growing attention.However,the exact mechanism of As mobility driven by tidal action is still not completely understood.The results reveal that lower total As concentrations in solution were observed in the flood-ebb treatment(FE),with the highest concentration being 7.1μg/L,and As(V)was the predominant species.However,elevated levels of total As in solution were found in the flooded treatment(FL),with a maximum value of 14.5μg/L after 30 days,and As(III)was the predominant form.The results of dissolved organicmatter(DOM)suggest that in the early to mid-stages of the incubation,fulvic acid-like substances might be utilized by microorganisms as electron donors or shuttle bodies,facilitating the reductive release of As/Fe from sediments.Both flood-ebb and flooded treatments promoted the transformation of crystalline iron hydrous oxides-bound As into residual forms.However,prolonged flooded conditions more readily facilitated the formation of specific adsorption forms of As and the reduction of crystalline iron hydrous oxides-bound As,increasing As mobility.In addition,the flood-ebb tides have been found to increase the diversity ofmicrobial populations.The main microbial genera in the flood-ebb treatment included Salinimicrobium,Erythrobacter,Yangia,Sulfitobacter,and Marinobacter.Bacillus,Psychrobacter,and Yangia showed a significant correlation with As(V).In flooded treatment,Bacillus,Pseudomonas,and Geothermobacter played a major role in the reduction and release of As.This study significantly contributes to the current understanding of how As behaves in diverse natural environments. 展开更多
关键词 ARSENIC mobility Coastal wetlands Tidal action Microbial composition
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Next generation High-Mobility 2D chalcogenides TFT for display backplane
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作者 Prashant Bisht Junoh Shim +7 位作者 Jooon Oh Jieun Lee Hoseong Shin Hyeonho Jeong Jimin Kim Junho Lee Hyuk-Jun Kwon Sunkook Kim 《International Journal of Extreme Manufacturing》 2025年第5期169-209,共41页
The evolution of display backplane technologies has been driven by the relentless pursuit of higher form factor and superior performance coupled with lower power consumption.Current state-of-the-art backplane technolo... The evolution of display backplane technologies has been driven by the relentless pursuit of higher form factor and superior performance coupled with lower power consumption.Current state-of-the-art backplane technologies based on amorphous Si,poly Si,and IGZO,face challenges in meeting the requirements of next-generation displays,including larger dimensions,higher refresh rates,increased pixel density,greater brightness,and reduced power consumption.In this context,2D chalcogenides have emerged as promising candidates for thin-film transistors(TFTs)in display backplanes,offering advantages such as high mobility,low leakage current,mechanical robustness,and transparency.This comprehensive review explores the significance of 2D chalcogenides as materials for TFTs in next-generation display backplanes.We delve into the structural characteristics,electronic properties,and synthesis methods of 2D chalcogenides,emphasizing scalable growth strategies that are relevant to large-area display backplanes.Additionally,we discuss mechanical flexibility and strain engineering,crucial for the development of flexible displays.Performance enhancement strategies for 2D chalcogenide TFTs have been explored encompassing techniques in device engineering and geometry optimization,while considering scaling over a large area.Active-matrix implementation of 2D TFTs in various applications is also explored,benchmarking device performance on a large scale which is a necessary aspect of TFTs used in display backplanes.Furthermore,the latest development on the integration of 2D chalcogenide TFTs with different display technologies,such as OLED,quantum dot,and MicroLED displays has been reviewed in detail.Finally,challenges and opportunities in the field are discussed with a brief insight into emerging trends and research directions. 展开更多
关键词 thin film transistors display backplane active-matrix OLED micro-LED mobility
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Electronic structure and carrier mobility of BSb nanotubes
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作者 Lantian Xue Chennan Song +4 位作者 Miaomiao Jian Qiang Xu Yuhao Fu Pengyue Gao Yu Xie 《Chinese Physics B》 2025年第3期183-188,共6页
High-mobility semiconductor nanotubes have demonstrated great potential for applications in high-speed transistors,single-charge detection,and memory devices.Here we systematically investigated the electronic properti... High-mobility semiconductor nanotubes have demonstrated great potential for applications in high-speed transistors,single-charge detection,and memory devices.Here we systematically investigated the electronic properties of single-walled boron antimonide(BSb)nanotubes using first-principles calculations.We observed that rolling the hexagonal boron antimonide monolayer into armchair(ANT)and zigzag(ZNT)nanotubes induces compression and wrinkling effects,significantly modifying the band structures and carrier mobilities through band folding andπ^(*)-σ^(*)hybridization.As the chiral index increases,the band gap and carrier mobility of ANTs decrease monotonically,where electron mobility consistently exceeds hole mobility.In contrast,ZNTs exhibit a more complex trend:the band gap first increases and then decreases,and the carrier mobility displays oscillatory behavior.In particular,both ANTs and ZNTs could exhibit significantly higher carrier mobilities compared to hexagonal monolayer and zinc-blende BSb,reaching 10^(-3)-10^(-7) cm^(-2)·V^(-1)·s^(-1).Our findings highlight strong curvature-induced modifications in the electronic properties of single-walled BSb nanotubes,demonstrating the latter as a promising candidate for high-performance electronic devices. 展开更多
关键词 ab initio calculations NANOTUBES electronic structure carrier mobility
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Vibration Transmission Characteristics of Shoe Sole Based on Mechanical Mobility and Vibration Transmissibility
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作者 WU Xuyang LIU Xiaoying +2 位作者 HAO Yanhua LIU Changhuang HUANG Xianwei 《Journal of Shanghai Jiaotong university(Science)》 2025年第1期175-186,共12页
It is particularly important to explore the response and transmission characteristics of shoe sole when exposed to foot-transmitted vibration(FTV)in daily life.In this study,based on mechanical mobility and vibration ... It is particularly important to explore the response and transmission characteristics of shoe sole when exposed to foot-transmitted vibration(FTV)in daily life.In this study,based on mechanical mobility and vibration transmissibility,the vibration response and transmission characteristics of ordinary sole and multi-cellular structure sole under three excitation modes were analyzed with finite element analysis.The analysis results of the ordinary sole are as follows:The distribution and transmission of vibration energy of ordinary sole are more related to the excitation position and mode-shape;the phalange region is more violent in vibration response to vibration and transmission of vibration.In addition,the analysis results of multi-cellular structure soles show that different types of multi-cellular structure soles have different effects on the equivalent mechanical mobility and the equivalent vibration transmissibility,among which Grid type has the greatest influence.So,this study can help prevent foot injury and provide guidance for the optimal design of the sole. 展开更多
关键词 vibration transmission characteristics mechanical mobility vibration transmissibility vibration energy shoe sole
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Impact of International Student Mobility in Distinctive Disciplines on Internationalization Capabilities
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作者 Guangli Xu Liangxue Cai Gao Li 《Journal of Contemporary Educational Research》 2025年第9期1-9,共9页
To deeply analyze the impact of international student mobility on their internationalization capabilities in the field of Petroleum and Natural Gas Engineering,this study systematically reviewed the exchange dynamics ... To deeply analyze the impact of international student mobility on their internationalization capabilities in the field of Petroleum and Natural Gas Engineering,this study systematically reviewed the exchange dynamics of international students at Southwest Petroleum University from 2014 to 2024,as well as detailed data on students’overseas visits from 2016 to 2024,carefully outlining the trends and characteristics of student international mobility over the past decade.Based on this,using an evaluation system for internationalization capabilities constructed by the authors,which closely follows the characteristics of Petroleum and Natural Gas Engineering and covers key dimensions such as language skills,international perspective,cross-cultural communication,and global cooperation,graduate students from the research team of international students were selected as a sample group.Through a carefully designed survey questionnaire,their current internationalization capabilities were systematically evaluated.The results showed that compared to the benchmark level in 2019,students’internationalization capabilities have shown a significant improvement trend,especially in cross-cultural communication.This finding not only reveals the positive role of international student mobility in promoting academic exchanges and integration but also further emphasizes the unique value of multicultural integration in scientific research teams to enhance the internationalization capabilities of domestic students. 展开更多
关键词 International mobility Internationalization capabilities Petroleum and natural gas engineering discipline
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Assessing the interaction of cross-city patient mobility and the coupling relationship between supply and demand of healthcare in China
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作者 XIANG Bowen WEI Wei +1 位作者 GUO Fang HONG Mengyao 《Journal of Geographical Sciences》 2025年第4期867-885,共19页
The uneven distribution of medical resources has led to increasingly frequent patient mobility;however, the interaction between this phenomenon and the healthcare supply-demand relationship remains underexplored. The ... The uneven distribution of medical resources has led to increasingly frequent patient mobility;however, the interaction between this phenomenon and the healthcare supply-demand relationship remains underexplored. The present study constructed the 2023Cross-City Patient Mobility Network in China using one million patient mobility data records obtained from online healthcare platforms. We applied urban network analysis to uncover mobility patterns and used the coupling coordination degree model to assess healthcare supply-demand relationships before and after patient mobility. Explainable machine learning further revealed the impact of supply-demand coupling on patient mobility. The results indicated the following: Patient mobility followed administrative boundaries, although megacities serve areas beyond provincial borders;The scale of healthcare supply and demand displayed a multi-centric spatial pattern with a general decline from east to west, and these characteristics of demand distribution were further solidified by patient mobility;Cities with low supply-demand coupling and undersupply experienced patient outflows, while cities with high coupling and oversupply attracted them. In turn, patient mobility helped balance healthcare supply and demand, optimising the coupling relationship across cities. Thus, this research not only provides a methodological reference for understanding the interaction between patient mobility and healthcare systems but also offers empirical insights for public health policy. 展开更多
关键词 cross-city patient mobility healthcare services coupling coordination degree model coupling relationship spatial analysis
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Intercity Mobility and Coupled Landscapes of Multidimensional Regionalization in Western China
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作者 JIANG Fanrong LI Tao LI Jiyuan 《Chinese Geographical Science》 2025年第2期384-400,共17页
Intercity mobility lays the foundation for capital flow,information flow,and knowledge flow,etc.,and is important for promoting regional integration.Although many scholars have studied intercity mobility in extensive ... Intercity mobility lays the foundation for capital flow,information flow,and knowledge flow,etc.,and is important for promoting regional integration.Although many scholars have studied intercity mobility in extensive well-developed urban agglomerations,few studies have examined the characteristics of intercity mobility at the county level and its impact on regionalization in western China.This study takes the Guanzhong Plain urban agglomeration(GPUA)as a case to study the geographical law of intercity mobility and then explore its impact on regionalization.The results obtained show that intercity mobility network exhibits a hub and spoke patterns focusing on major municipal districts at the county level.We also found a corridor effect that counties with higher travel volumes are mostly located along the trunk high speed railway(HSR)lines.Unlike previous studies,the distribution of intercity mobility is more concentrated than that of population and exhibits a super-linear behavior rule.There are the differences in gravity law for overall trips,weekday trips,weekend trips,and holiday trips.With the decrease of travel duration,the effect of attraction of destination is weakening,but the influence of distance decay is increasing.Finally,the spatial organization is still administrative-centric and is dominated by intraprefecture and intra-provincial development.Moreover,the coupled degree between network-based regionalization and attribute-based regionalization shows a decreasing trend from administrative via cultural to physical factors.These findings enrich the research on the intercity mobility and the regionalization in inland developing urban agglomerations. 展开更多
关键词 intercity mobility REGIONALIZATION gravity law Guanzhong Plain urban agglomeration(GPUA) China
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Deep inferior epigastric perforator and transverse rectus abdominis musculocutaneous flap breast reconstruction: A comparison of breast mobility outcomes
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作者 Cheng Huang Xia Fang +4 位作者 Nan Li Dawei Li Qi Bao Chenggang Yi Xueqing Hu 《Chinese Journal of Plastic and Reconstructive Surgery》 2025年第2期89-92,共4页
Current breast reconstruction evaluations mostly focus on static cosmetic analysis as a measure of the clinical outcomes.Moreover,it is essential to consider the dynamic changes in the reconstructed breast alongside a... Current breast reconstruction evaluations mostly focus on static cosmetic analysis as a measure of the clinical outcomes.Moreover,it is essential to consider the dynamic changes in the reconstructed breast alongside assessments of aesthetic symmetry,functional restoration,complication rates,and long-term stability of the reconstruction.This study aimed to assess the mobility of the reconstructed breast following various breast reconstruction techniques,specifically by comparing deep inferior epigastric perforator(DIEP) flaps and pedicled transverse rectus abdominis musculocutaneous(TRAM) flaps.We conducted a longitudinal case study to investigate the changes in breast movement resulting from different surgical interventions.The comparison showed that DIEP flap reconstruction was more likely to achieve superior breast mobility outcomes than TRAM flap reconstruction.For a better breast aesthetic outcome,it is fundamental to improve the awareness of the dynamic evaluation of the reconstructed breast at the surgical strategy level. 展开更多
关键词 Deep inferior epigastric perforator flap Transverse rectus abdominis musculocutaneous flap Breast mobility Breast reconstruction outcome
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How the Labor Mobility Impact Farmers’ Sustainable Livelihoods in Mountainous Regions: Evidence from Qinling-Daba Mountains, China
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作者 SU Huizhen ZHAO Xueyan +1 位作者 MU Fangfang YANG Hainan 《Chinese Geographical Science》 2025年第3期647-664,共18页
To reduce poverty and promote sustainable development in rural areas,it is crucial to explore the impact of labor mobility on the sustainable livelihoods in mountainous regions.Here,based on a questionnaire survey of ... To reduce poverty and promote sustainable development in rural areas,it is crucial to explore the impact of labor mobility on the sustainable livelihoods in mountainous regions.Here,based on a questionnaire survey of farmers and in-depth interview data in the area of the Qinling-Daba Mountains of China in 2021,we analyzed the characteristics of labor mobility,with livelihood capital as the entry point,discussed the impact of labor mobility on farmers’sustainable livelihood using propensity score matching(PSM).The res-ults showed that labor mobility was common in the Qinling-Daba Mountains area,with some form of labor mobility in 61.97%of households.The majority of households had only male mobility,and labor mobility tended to be small in scale,low in frequency,yet permanent and over long distances.Labor mobility had a significantly positive impact on farmers in mountainous regions,increasing the livelihood sustainability of rural households by 7.83%.However,the impact of labor mobility on different livelihood capital was differ-ent,which had the greatest improvement on financial capital,followed by social capital,although it weakened natural capital to some extent.Except for high-frequency mobility,the comprehensive impact of other types of labor mobility was positive.Among them,medi-um-scale mobility,seasonal mobility,inter-provincial mobility,and low-frequency mobility had more pronounced positive effects on farmers’sustainable livelihoods.Our study provided a reference to guide policy on rural migration,with the aim of providing support for the sustainable development of mountainous villages. 展开更多
关键词 labor mobility FARMERS sustainable livelihood propensity score matching(PSM) Qinling-Daba Mountains areas China
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Mobility-Aware Edge Caching with Transformer-DQN in D2D-Enabled Heterogeneous Networks
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作者 Yiming Guo Hongyu Ma 《Computers, Materials & Continua》 2025年第11期3485-3505,共21页
In dynamic 5G network environments,user mobility and heterogeneous network topologies pose dual challenges to the effort of improving performance of mobile edge caching.Existing studies often overlook the dynamic natu... In dynamic 5G network environments,user mobility and heterogeneous network topologies pose dual challenges to the effort of improving performance of mobile edge caching.Existing studies often overlook the dynamic nature of user locations and the potential of device-to-device(D2D)cooperative caching,limiting the reduction of transmission latency.To address this issue,this paper proposes a joint optimization scheme for edge caching that integrates user mobility prediction with deep reinforcement learning.First,a Transformer-based geolocation prediction model is designed,leveraging multi-head attention mechanisms to capture correlations in historical user trajectories for accurate future location prediction.Then,within a three-tier heterogeneous network,we formulate a latency minimization problem under a D2D cooperative caching architecture and develop a mobility-aware Deep Q-Network(DQN)caching strategy.This strategy takes predicted location information as state input and dynamically adjusts the content distribution across small base stations(SBSs)andmobile users(MUs)to reduce end-to-end delay inmulti-hop content retrieval.Simulation results show that the proposed DQN-based method outperforms other baseline strategies across variousmetrics,achieving a 17.2%reduction in transmission delay compared to DQNmethods withoutmobility integration,thus validating the effectiveness of the joint optimization of location prediction and caching decisions. 展开更多
关键词 mobile edge caching D2D heterogeneous networks deep reinforcement learning transformer model transmission delay optimization
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Interleukin-33 Knockout Promotes High Mobility Group Box 1 Release from Astrocytes by Acetylation Mediated by P300/CBP-Associated Factor in Experimental Autoimmune Encephalomyelitis
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作者 Yifan Xiao Liyan Hao +15 位作者 Xinyi Cao Yibo Zhang Qingqing Xu Luyao Qin Yixuan Zhang Yangxingzi Wu Hongyan Zhou Mengjuan Wu Mingshan Pi Qi Xiong Youhua Yang Yuran Gui Wei Liu Fang Zheng Xiji Shu Yiyuan Xia 《Neuroscience Bulletin》 2025年第7期1181-1197,共17页
High mobility group box 1(HMGB1),when released extracellularly,plays a pivotal role in the development of spinal cord synapses and exacerbates autoimmune diseases within the central nervous system.In experimental auto... High mobility group box 1(HMGB1),when released extracellularly,plays a pivotal role in the development of spinal cord synapses and exacerbates autoimmune diseases within the central nervous system.In experimental autoimmune encephalomyelitis(EAE),a condition that models multiple sclerosis,the levels of extracellular HMGB1 and interleukin-33(IL-33)have been found to be inversely correlated.However,the mechanism by which IL-33 deficiency enhances HMGB1 release during EAE remains elusive.Our study elucidates a potential signaling pathway whereby the absence of IL-33 leads to increased binding of P300/CBP-associated factor with HMGB1 in the nuclei of astrocytes,upregulating HMGB1 acetylation and promoting its release from astrocyte nuclei in the spinal cord of EAE mice.Conversely,the addition of IL-33 counteracts the TNF-α-induced increase in HMGB1 and acetylated HMGB1 levels in primary astrocytes.These findings underscore the potential of IL-33-associated signaling pathways as a therapeutic target for EAE treatment. 展开更多
关键词 INTERLEUKIN-33 High mobility group box 1 P300/CBP-associated factor ASTROCYTES Experimental autoimmune encephalomyelitis
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