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中国会展业时空分布特征

经济地理 2014年第8期34卷 96-102页

作者：杨欣金李梅浙江工商大学旅游与城市管理学院中国浙江杭州310018

从时空思维视角对我国会展业的空间集聚及时间分布特征进行研究,以"E展网"这一中文网页作为研究样本,对2011年1月—2013年12月期间的展会数量、场馆、展览面积、类型等数据进行收集和统计,采用地理集中指数等相关指数,并结合SPSS17.0和A... 详细信息

从时空思维视角对我国会展业的空间集聚及时间分布特征进行研究,以"E展网"这一中文网页作为研究样本,对2011年1月—2013年12月期间的展会数量、场馆、展览面积、类型等数据进行收集和统计,采用地理集中指数等相关指数,并结合SPSS17.0和ArcGIS软件对各地区会展的时空分布特点进行分析。研究发现,会展业在全国范围内存在区域、季节、类型集聚程度不平衡的发展状况,且这些差异与各省市的经济发展水平、场馆建设情况、各地区的季节气候特征以及参展产品属性等因素之间有关联。

关键词：会展业时空分布集聚程度场馆中国

CD56^brightCD25^＋ NK cells are preferentially recruited to the maternal/fetal interface in early human pregnancy

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Cellular & Molecular Immunology 2015年第1期12卷 77-86页

作者： Yu Tao Yan-Hong li Hai-Lan Piao Wen-Jie Zhou Di Zhang Qiang Fu Song-Cun Wang Da-jin li mei-Rong Du Laboratory for Reproductive Immunology Hospital and Institute of Obstetrics and Gynecology Fudan University Shanghai Medical College Shanghai KeyLaboratory of Female Reproductive Endocrine Related Diseases Shanghai China

Decidual natural killer （dNK） cells are believed to be critical for maintaining maternal/fetal tolerance and regulating placental vascular remodeling based upon their abundance and unique phenotype during early pregnancy. However, the mechanism for how the dNK cells play such important roles in successful pregnancy remains undefined. Here, we identified a subtype of dNK cells characterized as having a CD3-CD56^brightCD25^＋ phenotype. We found that CD56^brightCD25^＋ NK cells preferentially localize to the maternal/fetal interface during early human pregnancy. CD25^＋ dNK cells account for approximately 75% of CD25-expressing decidual immune cells （DICs）. However, less than 5% of CD25-positive peripheral blood mononuclear cells are CD25^＋ NK cells. Furthermore, CD25^＋ and CD25^- dNK cells exhibit distinct phenotypes： CD25^＋ dNK cells display a more activated phenotype and greater cytokine-secreting capacity. Interestingly, coculture of peripheral NK （pNK） cells with primary trophoblasts upregulates the percentage of CD25-expressing pNK cells, resulting in increased expression of activation markers and cytokine production by pNK cells. In addition, we demonstrated that the CXCL12/CXCR4 axis is crucial for the recruitment of CD25^＋ dNK cells and contributes to the accumulation of CD3^-CD56^brightCD25^＋ dNK cells at the maternal/fetal interface. Thus, our data reveal that the crosstalk between trophoblasts and pNK cells leads to the accumulation of CD3^-CD56^brightCD25^＋ dNK cells, which exert a regulating effect at the maternal/fetal interface.

关键词： CXCL12/CXCR4 CD3^-CD56^brightCD25^+ N K cells maternal/fetal interface trophoblasts

Structuring MoO3-polyoxometalate hybrid superstructures to boost electrocatalytic hydrogen evolution reaction

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Chinese Chemical Letters 2025年第2期36卷 239-243页

作者： Bowen li Ting Wang Ming Xu Yuqi Wang Zhaoxing li mei liu Wenjing Zhang Ming Feng Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal University

Improving the surface atoms utilization efficiency of catalysts is extremely important for large-scale H2production by electrochemical water splitting,but it remains a great ***,we reported two kinds of Mo O3-polyoxometalate hybrid nanobelt superstructures (MoO3-POM HNSs,POM=PW12O40and Si W12O40) using a simple hydrothermal *** superstructure with highly uniform nanoparticles as building blocks can expose more surface atoms and emanate increased specific surface *** incorporated POMs generated abundant oxygen vacancies,improved the electronic mobility,and modulated the surface electronic structure of MoO3,allowing to optimize the H*adsorption/desorption and dehydrogenation kinetics of ***,the as-prepared MoO3-PW12O40HNSs electrodes not only displayed the low overpotentials of 108 mV at 10 mA/cm2current density in 0.5 mol/L H2SO4electrolyte but also displayed excellent long-term *** hydrogen evolution reaction （HER） performance of MoO3-POM superstructures is significantly better than that of corresponding bulk materials MoO3@PW12O40and Mo O3@Si W12O40,and the overpotentials are about 8.3 and 4.9 times lower than that of single Mo *** work opens an avenue for designing highly surface-exposed catalysts for electrocatalytic H2production and other electrochemical applications.

关键词： Electrocatalysis Hydrogen production Metal oxide Polyoxometalate Superstructure

Epitaxial fabrication of monolayer copper arsenide on Cu(111)

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Chinese Physics B 2020年第7期29卷 194-198页

作者： Shuai Zhang Yang Song jin mei li Zhenyu Wang Chen liu Jia-Ou Wang Lei Gao Jian-Chen Lu Yu Yang Zhang Xiao lin jinbo Pan Shi Xuan Du Hong-Jun Gao Institute of Physics&University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100190China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100190China Kunming University of Science and Technology Kunming 650500China CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China

We report the epitaxial growth of monolayer copper arsenide(CuAs)with a honeycomb lattice on Cu(111)by molecular beam epitaxy(MBE).Scanning tunneling microscopy(STM),low energy electron diffraction(LEED),x-ray photoelectron spectroscopy(XPS),and density functional theory(DFT)verify the√3×√3 superlattice of monolayer CuAs on Cu(111)***-resolved photoemission spectroscopy(ARPES)measurements together with DFT calculations demonstrate the electronic band structures of monolayer CuAs and reveal its metallic *** calculations show that charge transfer from Cu(111)substrate to monolayer CuAs lifts the Fermi level and tunes the band structure of the monolayer *** high-quality epitaxial monolayer CuAs with potential tunable band gap holds promise on the applications in nano-electronic devices.

关键词： copper arsenide(CuAs) band structure scanning tunneling microscopy(STM)

Influencing factors of early post-traumatic stress disorder in young and middle-aged individuals with open globe injuries in west China:a cross-sectional study

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International Journal of Ophthalmology(English edition) 2025年第1期18卷 146-153页

作者： Yi-Man li Xin Zhang Ji-Hong Zeng Hong-mei Luo Department of Ophthalmology West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina

AIM:To evaluate the prevalence of early post-traumatic stress disorder(PTSD)among young and middle-aged patients who have suffered open globe injuries,and to identify the psychosocial factors influencing PTSD in these ***:A total of 280 patients who underwent ocular trauma surgery between January 2023 and January 2024 were selected through convenience *** were collected using a custom-designed demographic questionnaire,the Connor-Davidson Resilience Scale(CDRISC),the Cognitive Emotion Regulation Questionnaire(C-ERRI),and the PTSD Checklist-Civilian Version(PCL-C).Univariate analysis and stepwise multiple linear regression analysis were performed to determine the factors affecting PTSD in these ***:The average PTSD score for the patients was 33.22±*** scores for individual PTSD dimensions,ranked from highest to lowest,were recurrent traumatic experiences,heightened arousal,avoidance reactions,and social *** PTSD symptoms were observed in 85 patients(30.36%).Univariate analysis indicated that gender,postoperative vision,marital status,psychological resilience,and rumination were significant factors affecting PTSD symptoms(χ^(2)/t=6.53,17.88,8.83,2.17,and 14.1,respectively;all Plience and PTSD symptoms(r=-0.14,Plinear regression analysis identified postoperative vision(notably eye removal),rumination levels,and psychological resilience(optimism)as major factors influencing PTSD in these patients(R^(2)=0.57,Plience(optimism).Conversely,patients with good postoperative vision recovery,low rumination l

关键词： young and middle-aged open globe injuries post-traumatic stress disorder rumination psychological resilience

Giant low-field magnetocaloric effect in unstable antiferromagnetic Tm1-xErxNi2Si2（x=0.2,0.4） compounds

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Journal of Rare Earths 2025年第2期43卷 312-318页

作者： Bo Xu Lu Tian Junfeng Wang mei Wu Xinqiang Gao Zhenxing li Jun Shen School of Rare Earths University of Science and Technology of China Key Laboratory of Rare Earths Ganjiang Innovation AcademyChinese Academy of Sciences Department of Energy and Power Engineering School of Mechanical EngineeringBeijing Institute of Technology

Magnetic refrigeration（MR） technology is regarded as an ideal solution for cryogenic applications,relying on magnetocaloric materials which provide necessary chilling effect.A series of polycrystalline Tm1-xErxNi2Si2（x=0.2,0.4） compounds was synthesized,and their magnetic properties,magnetic phase transition together with magnetocaloric effect（MCE） were *** Tm1-xErxNi2Si2（x=0.2,0.4）compounds display a field-induced metamagnetic transition from antiferromagnetic（AFM） to ferromagnetism（FM） in excess of 0.2 T,***,the AFM ground state is *** the field change of 0-2 T,the values of maximal magnetic entropy change(-ΔSMmax) and refrigerant capacity（RC） for Tm0.8Er0.2Ni2Si2compound are 17.9 J/（kg·K） and 83.5 J/kg,*** large reversible MCE under low magnetic fields（≤2 T） indicates that Tm0.8Er0.2Ni2Si2compound can serve as potential candidate materials for cryogenic magnetic refrigeration.

关键词： Cryogenic magnetic refrigeration Magnetocaloric effects Magnetocaloric materials Rare earths TmNi2Si2

MixerKT:A Knowledge Tracing Model Based on Pure MLP Architecture

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Computers, Materials & Continua 2025年第1期82卷 485-498页

作者： Jun Wang Mingjie Wang Zijie li Ken Chen Jiatian mei Shu Zhang Key Laboratory of Education Informatization for Nationalities Ministry of EducationYunnan Normal UniversityKunming650000China Yunnan Key Laboratory of Smart Education Yunnan Normal UniversityKunming650000China

In the field of intelligent education,the integration of artificial intelligence,especially deep learning technologies,has garnered significant *** tracing(KT)plays a pivotal role in this field by predicting students’future performance through the analysis of historical interaction data,thereby assisting educators in evaluating knowledgemastery and tailoring instructional *** knowledge tracingmethods,largely based on Recurrent Neural Networks(RNNs)and Transformer models,primarily focus on capturing long-term interaction patterns in sequential ***,these models may neglect crucial short-term dynamics and other relevant *** paper introduces a novel approach to knowledge tracing by leveraging a pure Multilayer Perceptron(MLP)*** proposeMixerKT,a knowledge tracing model based on theHyperMixer framework,which uniquely integrates global and localMixer feature *** architecture enables more effective extraction of both long-terminteraction trends and recent learning behaviors,addressing limitations in currentmodels thatmay overlook these key *** evaluations on twowidely-used datasets,ASSIS Tments2009 and Algebra2005,demonstrate that MixerKT consistently outperforms several state-of-the-art models,including DKT,SAKT,and Separated Self-Attentive Neural Knowledge Tracing(SAINT).Specifically,MixerKT achieves higher prediction accuracy,highlighting its effectiveness in capturing the nuances of learners’knowledge *** results indicate that our model provides a more comprehensive representation of student learning patterns,enhancing the ability to predict future performance with greater precision.

关键词： Knowledge tracing multilayer perceptron channel mixer sequence mixer

Gentiopicroside Alleviates Atherosclerosis by Suppressing Reactive Oxygen Species-Dependent NLRP3 Inflammasome Activation in Vascular Endothelial Cells via SIRT1/Nrf2 Pathway

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Chinese Journal of Integrative Medicine 2025年第2期31卷 118-130页

作者： li Zhu-qing ZHANG Feng li Qi WANG li SUN Xiao-qiang li Chao YIN Xue-mei liU Chun-lei WANG Yan-xin DU Xiao-yu LU Cheng-zhi Department of Cardiology Tianjin First Central HospitalTianjin300192China The First Central Clinical School Tianjin Medical UniversityTianjin300070China Department of Cardiology The First College of Clinical Medical ScienceChina Three Gorges University&Yichang Central People’s HospitalYichangHubei Province443003China School of Medicine Nankai UniversityTianjin300071China

Objective:To evaluate the protective effects of gentiopicroside(GPS)against reactive oxygen species(ROS)-induced NOD-like receptor family,pyrin domain containing 3(NLRP3)inflammasome activation in endothelial cells,aiming to reduce ***:Eight-week-old male ApoE-deficient mice were randomly divided into 2 groups(n=10 per group):the vehicle group and the GPS treatment *** groups were fed a high-fat diet for 16 ***(40 mg/kg per day)was administered by oral gavage to the GPS group,while the vehicle group received an equivalent volume of the vehicle *** the end of the treatment,blood and aortic tissues were collected for assessments of atherosclerosis,lipid profiles,oxidative stress,and molecular expressions related to NLRP3 inflammasome activation,ROS production,and ***,in vitro experiments on human aortic endothelial cells treated with oxidized low-density lipoprotein(ox-LDL)were conducted to evaluate the effects of GPS on NLRP3 inflammasome activation,pyroptosis,apoptosis,and ROS production,specifically examining the role of the sirtuin 1(SIRT1)/nuclear factor erythroid 2-related factor 2(Nrf2)***1 and Nrf2 inhibitors were used to confirm the pathway's ***:GPS treatment significantly reduced atherosclerotic lesions in the en face aorta(Plike protein containing a CARD,cleaved-caspase-1,and cleavedgasdermin D expressions(all P<0.01).GPS also decreased ROS production,apoptosis,and pyroptosis,with the beneficial effects being significantly reversed by SIRT1 or Nrf2 ***:GPS exe

关键词： endothelial dysfunction gentiopicroside NLRP3 inflammasome SIRT1 nuclear factor erythroid 2-related factor 2 Chinese medicine

Maternal and fetal death associated with acute pancreatitis during pregnancy:A case report

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World Journal of Clinical Cases 2025年第10期13卷 53-58页

作者： jin li Qing-Yan Zhang mei-Hong Zhang Shan-Yun Jiang Department of Anesthesiology Kaihua County People’s HospitalQuzhou 324300Zhejiang ProvinceChina Center for Clinical Inspection and Quarantine Kaihua County Center for Clinical Inspection and QuarantineQuzhou 324300Zhejiang ProvinceChina

BACKGROUND Acute pancreatitis in pregnancy is a rare but serious condition that can lead to high maternal mortality and fetal *** of pregnancy complicated by severe acute pancreatitis,particularly with subsequent respiratory and cardiac arrest,are rarely *** SUMMARY We present the case of a 35-year-old woman,at 36+5 weeks of gestation,who presented with paroxysmal epigastric pain accompanied by low back pain,nausea,and *** to the clinical symptoms,B-ultrasound imaging and biochemical indicators,the patient was diagnosed with acute pancreatitis and initially managed ***,3 hours after admission,the patient experienced respiratory and cardiac arrest,and the fetus *** this case,the adverse outcomes occurred due to the lack of aggressive fluid resuscitation and an active surgical *** Implementing aggressive fluid resuscitation to sustain tissue perfusion,alongside the proactive evaluation of pharmacological agents that suppress gastric acid secretion and inhibit pancreatic enzyme activity,may be beneficial in mitigating the risk of a severely adverse *** management of acute pancreatitis during pregnancy requires careful timing of surgical intervention,a thorough evaluation of the risks and benefits regarding the continuation or termination of pregnancy,and a focus on safeguarding both maternal and fetal health.

关键词： Severe acute pancreatitis Pregnancy Cardiac arrest Fetal death Case report