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SPACES OF ANALYTIC FUNCTIONS REPRESENTED BY DIRICHLET SERIES OF TWO COMPLEX VARIABLES 认领 引用 被引量：1
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作者 Hazem Shaba Behnam and G. S. Srivastava 《Approximation Theory and Its Applications》 2002年第3期1-14,共14页
We consider the space X of all analytic functionsof two complex variables s1 and s2, equipping it with the natural locally convex topology and using the growth parameter, the order of f as defined recently by the auth... We consider the space X of all analytic functionsof two complex variables s1 and s2, equipping it with the natural locally convex topology and using the growth parameter, the order of f as defined recently by the authors. Under this topology X becomes a Frechet space Apart from finding the characterization of continuous linear functionals, linear transformation on X, we have obtained the necessary and sufficient conditions for a double sequence in X to be a proper bases. 展开更多
关键词 SPACES OF ANALYTIC FUNCTIONS REPRESENTED BY DIRICHLET SERIES OF TWO COMPLEX VARIABLES TEB Math
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Spatially biased collections and the failure to cover all wild genetic clusters in plant populations under ex situ conservation 认领 引用 被引量：1
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作者 Zhiqiang Xiao Hui Liu +5 位作者 Guiyun Huang Di Wu Liwen Qiu Jinhua Wu Xinzeng Wei Mingxi Jiang 《Plant Diversity》 SCIE CAS CSCD 2026年第1期75-83,共9页
Successful ex situ conservation of plant populations requires a high degree of genetic representativeness.However,spatially biased sampling in ex situ conservation efforts may fail to capture all wild genetic clusters... Successful ex situ conservation of plant populations requires a high degree of genetic representativeness.However,spatially biased sampling in ex situ conservation efforts may fail to capture all wild genetic clusters for species with range-wide genetic structure.To investigate the extent of spatially biased sampling in living collections and the coverage of wild genetic clusters in plant populations under ex situ conservation worldwide,we combined a global synthesis of ex situ conservation efforts with a case study of an endangered riparian plant species,Myricaria laxiflora.Our analysis of ex situ conservation worldwide revealed that the majority(82.6%)of ex situ populations fail to cover all wild genetic clusters,largely due to spatially biased sampling with low geographic coverage.Our case study of M.laxiflora showed that genetic diversity differed between the ex situ and upstream populations,while it was comparable between ex situ populations and other wild populations.However,current ex situ populations did not cover all wild genetic clusters,as the upstream genetic cluster was previously uncollected.Our study suggests that the failure to cover all wild genetic clusters in ex situ populations is a widespread issue,and ex situ populations with high genetic diversity can also fail to cover all wild genetic clusters.In future ex situ conservation programs,both the importance of high genetic diversity and the high coverage of wild genetic clusters should be prioritized. 展开更多
关键词 Conservation genomics Genetic representativeness Ex situ conservation Genetic composition Geographic coverage Spatially biased sampling
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UNIFORMLY COPIES OF lPN IN THE SPACES OF POLYNOMIALS 认领 引用
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作者 Dumitru POPA 《Acta Mathematica Scientia》 SCIE CSCD 2026年第1期112-118,共7页
Let n≥2 be a natural number,1≤p≤∞and X a Banach space.We prove that if X*containsλ-uniformly copies of lkp,then:P(nX) contains cKλn-uniformly copies of■.in the case p*>n(ii)P(nX) contain... Let n≥2 be a natural number,1≤p≤∞and X a Banach space.We prove that if X*containsλ-uniformly copies of lkp,then:P(nX) contains cKλn-uniformly copies of■.in the case p*>n(ii)P(nX) containsλn-uniformly copies of lk∞in the case p*≤n.This complete a result of S.Dineen’s from 1995. 展开更多
关键词 polynomials on Banach spaces uniformly copies of lnp finitely represented
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The Increasing Trends of Short and Long Sleep Duration among Chinese Adults from 2010 to 2018:A Repeated Nationally Representative Cross-sectional Survey 认领 引用
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作者 Yun Chen Lan Wang +12 位作者 Mei Zhang Sifan Hu Yan Shao Xiao Zhang Chun Li Jie Chen Zhenping Zhao Yanhong Dong Lin Lu Maigeng Zhou Limin Wang Junliang Yuan Hongqiang Sun 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2026年第1期46-59,共14页
Objective This study aimed to determine the temporal trends in sleep duration among Chinese adults.Methods In this series of repeated nationally representative cross-sectional surveys(China Chronic Disease and Risk Fa... Objective This study aimed to determine the temporal trends in sleep duration among Chinese adults.Methods In this series of repeated nationally representative cross-sectional surveys(China Chronic Disease and Risk Factors Surveillance)conducted between 2010 and 2018,a total of 645,420 adult participants(97,741 in 2010;175,749 in 2013;187,777 in 2015;and 184,153 in 2018)were included in the trend analysis.Linear and logistic regression models were utilized to assess trends in sleep duration.Results In 2018,the estimated overall mean sleep duration among the Chinese adult population was7.58(SD,1.45)hours per day,with no significant trend from 2010.A significant increase in short sleep duration(≤6 hours)was observed in the total population,from 15.3%(95%CI:14.1%–16.5%)in 2010 to18.5%(95%CI:17.7%–19.3%)in 2018(P9 hours)was also significant,increasing in weighted prevalence from 7.2%(95%CI:6.3%–8.1%)in 2010 to 9.0%(95%CI:8.2%–9.9%)in 2018(P<0.001).Conclusion The prevalence of both short and long sleep durations significantly increased among Chinese adults from 2010 to 2018,highlighting the urgency of health initiatives to promote optimal sleep duration in China. 展开更多
关键词 Sleep duration Trend analysis Repeated cross-sectional study Nationally representative survey CCDRFS
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DR.ECC:a comprehensive multimodal electronic health record database for emergency and critical care in China 认领 引用
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作者 Chen Huang Chenghao Lu +20 位作者 Pengfei Shui Sicheng Hao Jie Yang Xi Hu Yang He Pengpeng Chen Hongliang Wu Hongjie Hu Huiqing Ge Tan Lyu Yi Sun Danyu Li Jiajie Huang Shuyu Zhan Dongpeng Li Lifeng Xing Fengfeng Yu Yi Fang Yiyu Zhuang Ning Liu Yucai Hong 《World Journal of Emergency Medicine》 SCIE CAS CSCD 2026年第3期265-268,共4页
High-quality clinical databases are essential for advancing research and clinical practice in emergency and critical care medicine.With the widespread adoption of Electronic Health Record(EHR)systems across hospitals ... High-quality clinical databases are essential for advancing research and clinical practice in emergency and critical care medicine.With the widespread adoption of Electronic Health Record(EHR)systems across hospitals in China,vast amounts of clinical information have been digitally archived.Emergency departments(EDs)and intensive care units(ICUs)represent critically datademanded environments. 展开更多
关键词 emergency departments electronic health record ehr systems intensive care units icus represent intensive care units clinical databases China advancing research clinical practice electronic health record
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Relationship of Non-Essential and Essential Metals with Vitamin D in a Chinese Early Adolescent Cohort 认领 引用
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作者 Gengfu Wang Weibo Liu +9 位作者 Min Li Ting Tang Qi Zhong Guangbo Qu Yi Zhou Mengyuan Yuan Yonghan Li Fangbiao Tao Puyu Su Chaoxue Zhang 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2026年第1期116-122,共7页
Vitamin D deficiency(VDD)represents a significant nutritional concern among children and adolescents.The estimated prevalence of VDD in China is 46.8%in this population[1].VDD during childhood and adolescence has b... Vitamin D deficiency(VDD)represents a significant nutritional concern among children and adolescents.The estimated prevalence of VDD in China is 46.8%in this population[1].VDD during childhood and adolescence has been associated with the onset of various conditions,including acute respiratory infections,asthma,atopic dermatitis,and food allergies[2].Multiple factors,including age,sun exposure,adiposity,and genetics,influence vitamin D levels[2,3].Increasing attention has been directed toward understanding the environmental determinants that may influence vitamin D status.Given the potential of metallic pollutants to disrupt endocrine function and their ubiquity in the environment,investigating the effects of metal exposure on human vitamin D status,particularly in vulnerable populations,is imperative. 展开更多
关键词 vitamin d deficiency vdd represents Chinese early adolescent cohort essential metals vitamin d non essential metals food allergies multiple acute respiratory infectionsasthmaatopic dermatitisand vitamin D deficiency
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Comment on“α-hederin decreases the glycolysis level in intestinal epithelial cells via SNX10-mediated DEPDC5 degradation” 认领 引用
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作者 Haiping Hao 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2026年第1期3-4,共2页
Colorectal cancer(CRC)represents a global health challenge with significant societal burden,ranking among the most prevalent and lethal malignancies worldwide.Despite advances in understanding CRC pathogenesis,its mol... Colorectal cancer(CRC)represents a global health challenge with significant societal burden,ranking among the most prevalent and lethal malignancies worldwide.Despite advances in understanding CRC pathogenesis,its molecular mechanisms remain incompletely elucidated.Intestinal epithelial cells(IECs),the primary sites of CRC initiation,undergo genetic susceptibility alterations and mutations that drive carcinogenesis,highlighting the critical need to investigate IEC gene functions for identifying preventive targets. 展开更多
关键词 colorectal cancer crc represents intestinal epithelial cells epithelial cells iecs iec gene functions DEPDC alpha hederin glycolysis SNX
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Longitudinal Study of Subsequent Wheezing/Asthma Risk Among Children Hospitalized for Acute Respiratory Infections——Yichang City,Hubei Province,China,2017–2024 认领 引用
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作者 Qiuyan Qin Qiqi Wang +3 位作者 Siyu Wang Lei Wang Jinfang Sun Guoxing Li 《China CDC weekly》 SCIE CSCD 2026年第21期641-646,I0003,I0004,共6页
Introduction:Acute respiratory infections(ARI)represent a leading cause of hospitalization in early childhood and may increase the risk of subsequent wheezing/asthma.However,longitudinal evidence of this association a... Introduction:Acute respiratory infections(ARI)represent a leading cause of hospitalization in early childhood and may increase the risk of subsequent wheezing/asthma.However,longitudinal evidence of this association among Chinese children remains limited.Methods:A follow-up cohort was established using the Yichang Health Management Big Data Platform,including children born between January 1,2017,and December 31,2018,who were hospitalized for ARI.Kaplan–Meier curves were used to estimate the cumulative incidence of subsequent wheezing/asthma,with group differences evaluated using the log-rank test.Piecewise Cox proportional hazards regression models were employed to assess the magnitude and timing of risk by ARI type.Results:Among 22,460 children followed up for a median of 43.5 months,1,463 developed wheezing/asthma.Hospitalization for bronchiolitis or pneumonia was associated with a significantly higher risk of wheezing/asthma than that for upper respiratory infection or influenza(P<0.001),with excess risk concentrated in the first 2 years.During the 2 to<4 years period,only bronchiolitis remained significantly associated with subsequent wheezing/asthma[adjusted hazard ratio(aHR)=1.85,95%confidence interval(CI):1.32,2.58].Conclusion:Children hospitalized for bronchiolitis or pneumonia experienced increased subsequent wheezing/asthma,particularly within 2 years of discharge.Structured follow-up and symptom-based asthma screening after discharge are essential,particularly in children with bronchiolitis. 展开更多
关键词 children subsequent wheezing asthma risk longitudinal study respiratory infections ari represent acute respiratory infections Yichang City arikaplan meier curves
Mechanical Behavior of Cementitious Composites Reinforced with Nonwoven Fabrics:A Numerical Modeling Study 认领 引用
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作者 Bahareh Ramzikhalesi Ali Rakhsh-Mahpour +1 位作者 Josep Claramunt-Blanes Ernest Bernat-Maso 《Computer Modeling in Engineering & Sciences》 SCIE EI 2026年第5期446-471,共26页
The mechanical behavior of nonwoven fabrics as reinforcement in cementitious composites remains insufficiently explored,particularly from a numerical modeling perspective,despite their growing interest as sustainable ... The mechanical behavior of nonwoven fabrics as reinforcement in cementitious composites remains insufficiently explored,particularly from a numerical modeling perspective,despite their growing interest as sustainable alternatives to conventional textiles.This study presents a simplified,engineering-oriented numerical modeling framework for reproducing the flexural mechanical response of cementitious composites reinforced with flax nonwoven fabric.Four-point bending(flexural)behavior of nonwoven fabric–reinforced cementitious composites was numerically simulated using ANSYS software.The model is developed using Finite Element Analysis(FEA)and incorporates a Representative Volume Element(RVE)approach to account for the heterogeneous fiber–matrix interaction.The required material properties were iteratively calibrated using existing experimental data for three composite configurations comprising 4,5,and 6 layers.The proposed model demonstrated agreement with experimental results within the investigated configurations,achieving normalized root mean square errors(nRMSE)of 5.2%,4.6%,and 2.07%for the respective configurations.Furthermore,correlations between material parameters and geometric factors were identified,providing preliminary insights for estimating model input properties from easily measurable variables.Finally,sensitivity analyses were performed to evaluate the influence of key geometric and material parameters on the structural response,offering valuable insights for the optimized design of nonwoven fabric-reinforced cementitious composites. 展开更多
关键词 Fabric-reinforced cementitious composites flax nonwoven fabric numerical modeling cementitious composites modeling finite element method representative volume element flexural response sensitivity analysis
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Voxel event graph neural network for event-based human gait recognition 认领 引用
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作者 Guangyuan MA Xiaolin GONG +2 位作者 Jiangtao XU Jiandong GAO Zhaoxuan GUO 《Optoelectronics Letters》 EI 2026年第3期167-173,共7页
To improve the accuracy of event-based gait recognition,a method called voxel event graph neural network(VEGNN)is proposed.This method voxelizes the event stream and selects representative voxels as vertices of the gr... To improve the accuracy of event-based gait recognition,a method called voxel event graph neural network(VEGNN)is proposed.This method voxelizes the event stream and selects representative voxels as vertices of the graph.Then the edges are constructed based on spatio-temporal distance and temporal order constraints so that the event stream is constructed as a graph structure.Finally,a lightweight feature extraction network based on graph neural networks(GNNs)is used to efficiently capture spatio-temporal information and motion cues from the event graph.To evaluate our method,an event-based gait recognition dataset called Celex-Gait is created.Experimental results show that VEGNN achieves a gait recognition accuracy of 95.8%and 93.9%on the Celex-Gait dataset and the DVS128-Gait-Day dataset,respectively.Furthermore,compared to the state-of-the-art methods,VEGNN reduces the number of model parameters by 30%.This indicates that VEGNN achieves higher recognition accuracy with lower model complexity. 展开更多
关键词 selects representative voxels voxel event graph neural network vegnn event stream lightweight feature extraction network voxel event graph neural network graph structurefinallya graph neural networks gnns gait recognitiona
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Wearable device-measured moderate to vigorous physical activity and aortic valve stenosis:revisiting the preventability of degenerative aortic valve stenosis 认领 引用
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作者 Mingya Zhang Huadong Zhao +3 位作者 Yanqing Liu Huiping Li Yunfeng Ni Yang Yang 《Medicine Plus》 CAS 2026年第2期30-33,共4页
Degenerative valvular heart disease(VHD)is one of the most prevalent cardiovascular conditions in the aging population,with aortic valve stenosis(AS)representing the largest and fastest-growing disease burden.1 AS is ... Degenerative valvular heart disease(VHD)is one of the most prevalent cardiovascular conditions in the aging population,with aortic valve stenosis(AS)representing the largest and fastest-growing disease burden.1 AS is characterized by progressive valvular calcification and fibrosis,often developing silently over many years before the onset of clinical symptoms.To date,no pharmacological therapy has been shown to effectively prevent the development or slow the progression of AS,and surgical or transcatheter valve replacement remains the only definitive treatment.2,3 Furthermore,AS has long been regarded as an inevitable and largely non-preventable condition associated with aging.Therefore,identifying effective strategies for the primary prevention of AS remains a major unmet clinical and public health priority. 展开更多
关键词 aortic valve stenosis pharmacological therapy wearable devices cardiovascular conditions transcatheter val moderate vigorous physical activity progressive valvular calcification fibrosisoften aortic valve stenosis representing
Severe load spectrum development for transport aircraft from measured load data:A representative flight method 认领 引用
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作者 Kunyu WEI Xiaofan HE 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第5期347-363,共17页
The development of severe load spectrum is essential for evaluating the durability and damage tolerance of transport aircraft structure to ensure safety and economic viability.However,traditional methods have lacked c... The development of severe load spectrum is essential for evaluating the durability and damage tolerance of transport aircraft structure to ensure safety and economic viability.However,traditional methods have lacked consensus on severity selection and often distort load sequences,which undermines reliability in full-scale fatigue testing.This study introduces a novel framework for developing high-fidelity severe Flight-by-Flight(F-B-F)spectrum from measured fleet load data.Statistical modelling of load variations within a specific transport aircraft fleet is used to establish severe damage criteria.Subsequently,flight data meeting these criteria are extracted to develop a severe load spectrum that accurately reproduces the actual severe load sequences.The accuracy and reliability of the spectrum developed are validated through fatigue tests on 2024-T3 aluminum alloy specimens with a centered hole.This approach bridges the gap between severe damage quantification and spectrum development,providing a robust method for generating reliable severe F-B-F spectrum. 展开更多
关键词 Fatigue damage Fatigue load Fatigue testing Representative flight Spectrum analysis Severe load spectrum
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Spectrum and functions of ion channels and transporters in osteoclasts 认领 引用
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作者 Hongyu Chen Yanli Zhang +3 位作者 Yulong Zhu Xiang Xiao Shanshan Huang Xiaohong Duan 《Bone Research》 SCIE CAS CSCD 2026年第2期447-477,共31页
Osteoclasts are essential for bone resorption and interact with osteoblasts during bone remodeling.Ion channels and transporters located in the ruffled border or intracellular vesicles coordinate the transport of vari... Osteoclasts are essential for bone resorption and interact with osteoblasts during bone remodeling.Ion channels and transporters located in the ruffled border or intracellular vesicles coordinate the transport of various ions and substrates,which is fundamental to the primary functions of osteoclasts.Numerous channels and transporters are implicated in bone metabolic disorders and genetic diseases.Among these,the voltage-gated chloride channel 7(ClC-7)and vacuolar proton ATPases(VATPase)represent the most well-characterized examples in osteoclasts. 展开更多
关键词 ruffled border channels transporters transporters intracellular vesicles bone resorption vacuolar proton atpases vatpase represent osteoclasts bone remodelingion
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Combining different climate datasets better reflects the response of warm-temperate forests to climate:a case study from Mt.Dongling,Beijing 认领 引用
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作者 Shengjie Wang Haiyang Liu +1 位作者 Shuai Yuan Chenxi Xu 《Journal of Forestry Research》 SCIE EI CAS CSCD 2026年第2期131-143,共13页
Accurately assessing the relationship between tree growth and climatic factors is of great importance in dendrochronology.This study evaluated the consistency between alternative climate datasets(including station and... Accurately assessing the relationship between tree growth and climatic factors is of great importance in dendrochronology.This study evaluated the consistency between alternative climate datasets(including station and gridded data)and actual climate data(fixed-point observations near the sampling sites),in northeastern China’s warm temperate zone and analyzed differences in their correlations with tree-ring width index.The results were:(1)Gridded temperature data,as well as precipitation and relative humidity data from the Huailai meteorological station,was more consistent with the actual climate data;in contrast,gridded soil moisture content data showed significant discrepancies.(2)Horizontal distance had a greater impact on the representativeness of actual climate conditions than vertical elevation differences.(3)Differences in consistency between alternative and actual climate data also affected their correlations with tree-ring width indices.In some growing season months,correlation coefficients,both in magnitude and sign,differed significantly from those based on actual data.The selection of different alternative climate datasets can lead to biased results in assessing forest responses to climate change,which is detrimental to the management of forest ecosystems in harsh environments.Therefore,the scientific and rational selection of alternative climate data is essential for dendroecological and climatological research. 展开更多
关键词 Climate data representativeness Alternative climate data selection Response differences Deciduous broad-leaf forest Warm temperate zone
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Spatiotemporal pattern of terrestrial ecosystem carbon storage in China with projections under multiple climate scenarios 认领 引用
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作者 LIU Ming ZHANG Hao +5 位作者 KONG Zhihao ZHENG Yuxin ZHOU Gaoxiang WANG Xiaofeng REN Zhaoxia Jonathan LI 《Regional Sustainability》 CAS CSCD 2026年第4期166-192,共27页
Accurate accounting of terrestrial ecosystem carbon storage is essential for understanding how production, decay, and disturbance shape ecological function and resilience.However, few China-wide datasets explicitly re... Accurate accounting of terrestrial ecosystem carbon storage is essential for understanding how production, decay, and disturbance shape ecological function and resilience.However, few China-wide datasets explicitly resolve spatial heterogeneity in carbon density within terrestrial ecosystem types, resulting in systematic and location-dependent uncertainty. This study produced a 1-km-resolution, annually continuous carbon-storage dataset for China's terrestrial ecosystems from 2001 to 2020 using an Intergovernmental Panel on Climate Change (IPCC) framework, and projected the total terrestrial ecosystem carbon storage in 2O30 under five Shared Socioeconomic Pathways (SSP)-Representative Concentration Pathways(RCP) scenarios(SSP1-RCP2.6, SSP2-RCP4.5, SSP3-RCP7.0,SSP4-RCP3.4,and SSP5-RCP8.5). Multi-source remote sensing, land cover, biomass,and soil data were combined to estimate carbon storage in the four carbon pools (aboveground biomass carbon, belowground biomass carbon, soil organic carbon, and dead organic matter carbon) and across six land-use types (cropland, forestland, grassland,water body, built-up land, and unused land). Validation against national-scale estimates and outputs from the Integrated Valuation of Ecosystem Services and Trade-offs (InVEST) model showed reasonable consistency in magnitude and spatial pattern,although systematic positive biases were observed in the InVEST-based estimates. The total terrestrial ecosystem carbon storage increased from 78.42 Pg C in 2001 to 89.62 Pg C in 2011, then declined to 85.49 Pg C in 2020. Soil organic carbon was the dominant pool (53.8% of the total), while forestland and grassland together contributed 69.2% of the total terrestrial ecosystem carbon storage. Under the SSP-RCP scenarios,China's total terrestrial ecosystem carbon storage in 2030 was projected lowest under SSP1-RCP2.6 at 90.63 Pg C and highest under SSP2-RCP4.5 at 92.62 Pg C. These findings underscore the influence of policy and land-use changes under low- and medium-emission pathways,while extremely high-emission scenarios may show localized gains from ecological restoration. The dataset produced in this study provides a robust basis for carbon accounting, land-use policy, and ecosystem monitoring in China. 展开更多
关键词 Terrestrial ecosystem carbon storage Soil organic carbon storage Intergovernmental Panel on Climate Change(IPCC)framework Land-use change Shared Socioeconomic Pathways(SSP) Representative Concentration Pathways(RCP)China
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Introduction of the Acupuncture Anesthesia Basic Research Team Led by Professor Wang Ke 认领 引用
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《Chinese Medicine and Culture》 CAS 2026年第2期F0003-F0003,共1页
Acupuncture anesthesia is one of the most distinctive original achievements of traditional Chinese medicine(TCM),representing a remarkable integration of traditional Chinese medical wisdom with modern biomedical pract... Acupuncture anesthesia is one of the most distinctive original achievements of traditional Chinese medicine(TCM),representing a remarkable integration of traditional Chinese medical wisdom with modern biomedical practice.The Acupuncture Anesthesia Basic Research Team led by Professor Wang Ke(王珂)at Shanghai University of Traditional Chinese Medicine(SHUTCM)is dedicated to advancing the scientific understanding,innovation,and international development of acupuncture anesthesia.The team functions as an important research component of the broader acupuncture anesthesia program under the academic leadership of Professor Zhou Jia(周嘉),whose longstanding contributions have played a pivotal role in promoting the development of acupuncture anesthesia in both clinical practice and scientific research. 展开更多
关键词 traditional chinese medicine shutcm integration traditional chinese medical wisdom modern biomedical practicethe biomedical practice scientific understanding acupuncture anesthesia traditional chinese medicine tcm representing traditional chinese medicine innovation
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Hainan FTP:A New Step to Align with International Rules in Opening-Up 认领 引用
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作者 YU YUNQUAN 《China Today》 2026年第3期32-33,共2页
The Hainan Free Trade Port’s implementation of special customs operations marks a significant stride in China’s institutional opening-up,spurring global trade and investment flows.THE Hainan Free Trade Port(FTP)repr... The Hainan Free Trade Port’s implementation of special customs operations marks a significant stride in China’s institutional opening-up,spurring global trade and investment flows.THE Hainan Free Trade Port(FTP)represents a significant step forward in China’s pursuit of high-standard opening-up and greater engagement in economic globalization. 展开更多
关键词 implementation special customs operations Special Customs Operations free trade port's Global Trade Hainan Free Trade Port free trade port ftp represents Institutional Opening Up Investment Flows
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A Gateway for Opening Up 认领 引用
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作者 YU YUNQUAN 《ChinAfrica》 2026年第3期34-35,共2页
Hainan FTP will boost alignment with international rules in China’s opening up The Hainan Free Trade Port(FTP)represents a significant step forward in China’s pursuit of high-standard opening up and greater engageme... Hainan FTP will boost alignment with international rules in China’s opening up The Hainan Free Trade Port(FTP)represents a significant step forward in China’s pursuit of high-standard opening up and greater engagement in economic globalisation.Following years of exploration,the policy framework for the Hainan FTP has come into being,and the recent launch of island-wide special customs operations marks an important transition-from institutional design to full implementation. 展开更多
关键词 Special Customs Operations International Rules policy framework Hainan Free Trade Port free trade port ftp represents alignment international rules institutional design Opening Up
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Multi-scale damage and fracture analysis and statistical damage constitutive model of shallow coral reef limestone based on digital core 认领 引用 被引量：1
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作者 Yingwei Zhu Xinping Li +4 位作者 Zhengrong Zhou Dengxing Qu Fei Meng Shaohua Hu Wenjie Li 《International Journal of Mining Science and Technology》 SCIE EI CAS CSCD 2025年第11期1849-1869,共21页
Coral reef limestone(CRL)constitutes a distinctive marine carbonate formation with complex mechanical properties.This study investigates the multiscale damage and fracture mechanisms of CRL through integrated experime... Coral reef limestone(CRL)constitutes a distinctive marine carbonate formation with complex mechanical properties.This study investigates the multiscale damage and fracture mechanisms of CRL through integrated experimental testing,digital core technology,and theoretical modelling.Two CRL types with contrasting mesostructures were characterized across three scales.Macroscopically,CRL-I and CRL-II exhibited mean compressive strengths of 8.46 and 5.17 MPa,respectively.Mesoscopically,CRL-I featured small-scale highly interconnected pores,whilst CRL-II developed larger stratified pores with diminished connectivity.Microscopically,both CRL matrices demonstrated remarkable similarity in mineral composition and mechanical properties.A novel voxel average-based digital core scaling methodology was developed to facilitate numerical simulation of cross-scale damage processes,revealing network-progressive failure in CRL-I versus directional-brittle failure in CRL-II.Furthermore,a damage statistical constitutive model based on digital core technology and mesoscopic homogenisation theory established quantitative relationships between microelement strength distribution and macroscopic mechanical behavior.These findings illuminate the fundamental mechanisms through which mesoscopic structure governs the macroscopic mechanical properties of CRL. 展开更多
关键词 Coral reef limestone Multi-scale mechanics Digital core Pore structure Representative volume element Damage and fracture Damage statistical constitutive model
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