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Interfacial electron rearrangement of 3D Fe_(3)O_(4)/h-YFeO_(3)composites for efficient electromagnetic wave absorption

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International Journal of Minerals,Metallurgy and Materials 2025年第3期32卷 609-618页

作者： yi sui yingde Zhang Guang Liu Lei Ji Junyu Yue Chen Wu Mi Yan School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China Key Laboratory of Rare Earths Chinese Academy of SciencesGanzhou 341119China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030032China

Interface modulation is an important pathway for highly efficient electromagnetic wave ***,tailored interfaces between Fe_(3)O_(4)particles and the hexagonal-YFeO_(3)(h-YFeO_(3))framework were constructed via facile *** resulting interfa-cial electron rearrangement at the heterojunction led to enhanced dielectric and magnetic loss *** results and density function theory(DFT)simulations demonstrate a transition in electrical properties from a half-metallic monophase to metallic Fe_(3)O_(4)/h-YFeO_(3)composites,emphasizing the advantages of the formed *** transformation of electron behavior is also accompan-ied by a redistribution of electrons at the Fe_(3)O_(4)/h-YFeO_(3)heterojunction,leading to the accumulation of localized electrons around the Y-O-Fe band bridge,consequently enhancing the polarization.A minimum reflection loss of-34.0 dB can be achieved at 12.0 GHz and 2.0 mm thickness with an effective bandwidth of 3.3 GHz due to the abundant interfaces,enhanced polarization,and rational ***,the synergistic effects endow the Fe_(3)O_(4)/h-YFeO_(3)composites with high performance and tunable functional properties for efficient electromagnetic absorption.

关键词： self-assembling heterojunction electron rearrangement interface modulation electromagnetic wave absorption

Metastatic lymph node distribution and pathology correlations in upper and lower gastric cancer patients:A multicenter retrospective study

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World Journal of Gastrointestinal Oncology 2025年第2期17卷 56-66页

作者： Xian-Bei Yuan Gang Sun Jun Niu Lei Dong yi sui Yong-Zhu Lv Department of General Surgery No.967 Hospital of the People's Liberation Army Joint Logistics Support ForceDalian 116000Liaoning ProvinceChina Department of Trauma Surgery The No.967 Hospital of People's Liberation Army Joint Logistics Support ForceDalian 116000Liaoning ProvinceChina Department of General Surgery The First Affiliated Hospital of Dalian Medical UniversityDalian 116000Liaoning ProvinceChina Department of General Surgery The Fifth People's Hospital of ShenyangShenyang 110000Liaoning ProvinceChina Department of General Surgery The Fifth People's Hospital of DalianDalian 116000Liaoning ProvinceChina

BACKGROUND Gastric cancer(GC)poses a significant threat to public ***,the clinicopathological features and tumor biological behaviors vary among the GC patients,leading to individual variations in lymph node ***,the stratification of lymph node dissection according to the specific type,particularly upper GC,has emerged as a prominent area of *** To investigate the distribution of metastatic lymph nodes in patients with upper and lower GC and to analyze the differences in related pathological elements and *** Differential analysis between upper and lower GC patients with various clinicopathological factors was performed using the chi-square test and rank-sum regression models were used to analyze risk factors affecting patient *** Kaplan-Meier method was used to construct survival curves associated with prognostic risk factors for *** Significant differences were observed between the two GC populations regarding tumor diameter,histological grade,pT stage,pN stage,tumor-node-metastasis(pTNM)stage,vascular invasion,and adjuvant chemotherapy usage(all P<0.05).Lymph node metastasis rates were highest for Siewert type II patients in groups Nos.1,3,2 and 7;for Siewert type III patients in groups Nos.3,1,2 and 7;and for other/unclassified patients in groups Nos.1,3,7,*** the lower GC samples,the sequences were Nos.3,6,7,*** type,pT stage,pTNM stage,and positive vascular invasion were independent risk factors for development of lymph node ***,pathological type,pT stage,pN stage,pTNM stage,vascular invasion,and absence of adjuvant chemotherapy were identified as independent prognostic *** Upper GC showed a significantly higher malignancy grade and different lymph node metastasis pattern than lower GC.

关键词： Upper gastric cancer Lower gastric cancer Metastatic lymph nodes Prognosis Retrospective study

Room temperature ferromagnetic property of Fe-Y(Fe:Y-6.5) composite oxide nano-cluster via an extremely easy and scalable method

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Journal of Rare Earths 2021年第6期39卷 696-702,I0004页

作者： yi sui Xiaoyu Liu Changsheng Liu School of Materials Science and Engineering Northeastern UniversityShenyang 110004China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China

A novel Fe-Y composite oxide(Fe:Y-6.5) nanocluster was synthesized by self-assembly *** α-Fe_(2)O_(3) and cubic-Y_(2)O_(3) nanocrystalline with diameter around 10 nm are homogeneously assembled to form a cluster architecture which are constituted of Fe6.5Y composite oxide *** oxygen vacancies are introduced with cubic-Y_(2)O_(3),and the oxygen vacancies as Fe^(3+)-V_(0)-Y^(3+) between α-Fe_(2)O_(3) and cubic-Y_(2)O_(3) nanocrystalline are generated by self-assembly *** hysteresis loops recorded by vibrating sample magnetometry at 273 K display a ferromagnetic order,related to the fact that Fe^(3+)-V_(o)-Y^(3+) act as defect centers in the bound magnetic polaron model for Fe-Y composite oxide *** ferromagnetic prope rties are proportional to oxygen vacancy co ntents,and maximum magnetization(M_(m)) value of the nano-cluster reaches 5.14 A·m^(2)/g.

关键词： Room temperature ferromagnetism Fe-Y oxide nano-cluster Self-assembly Oxygen vacancy Rare earths

A survey of weak stability boundaries in the Sun-Mars system

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Research in Astronomy and Astrophysics 2015年第3期15卷 376-392页

作者： Jian Li yi-sui Sun School of Astronomy and Space Science & Key Laboratory of Modern Astronomy and Astrophysics in Ministry of Education Nanjing University

We investigate the weak stability boundary （WSB） for a new primary, Mars, in the framework of the planar circular restricted 3-body problem, and also in the pla- nar bicircular restricted 4-body problem by including a perturbation due to Jupiter. For the sake of a simple stability/instability criterion, our computations have been done us- ing the equations of motion in polar coordinates. It is found that the relative size of the weakly stable sets around Mars is much larger than that of the Earth-Moon and the Sun-Jupiter systems, as the mass ratio of the Sun-Mars system is significantly smaller. We propose that this difference could be scaled by the Hill radius. In an enlarged view of the domain close to Mars, the geometry of the WSB has been presented for various parameters and compared to previous works. Our results also show that Jupiter＇s grav- itational force would strongly affect the Martian stable regions and should be taken into account to design a ballistic capture trajectory.

关键词： celestial mechanics

Investigation of cracking mechanism of the first tunnel lining during double-arch tunnel construction

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Underground Space 2024年第1期14卷 1-17页

作者： yi sui Xiaohui Cheng Zuozhou Zhao Weibin Ma Railway Engineering Research Institute China Academy of Railway Sciences Corporation LimitedBeijing 100081China School of Civil Engineering Tsinghua UniversityBeijing 100084China

To solve the engineering problem of the first tunnel lining cracking caused by the second tunnel construction of double-arch highway tunnels,a research method combining distributed optical-fibre monitoring,inversion analysis and numerical simulation that can reflect lining cracking was *** fibres were laid on opposite sides of the steel arches inside the first tunnel *** optical-fibre monitoring was conducted continuously during the second tunnel *** on the fibre-optic strain profile,the lining cracking was deduced and warned in *** mechanical behaviour of the steel arch was investigated by the inversion analysis,which took into consideration the integrated impact of axial force and flexural moment.A two-dimensional(2D)load-structure method–based numerical model was established,considering the influence of different load distributions in each construction *** total strain rotating crack constitutive model was applied to reflect the cracking behaviour of concrete lining in the simulation,and the model was calibrated and verified in the *** analysis between the simulated strain distribution and the distributed optical-fibre monitoring results was carried *** deformation mode and crack distribution of the lining were *** cracking mechanism was ***,the second tunnel construction led to the loading at the top of the middle partition wall and the release of rock pressure in the first *** these load changes,the secondary lining of the first tunnel cracked on the inner side of the top of the middle partition wall owing to tension,and compression-bending failure occurred near the right arch ***,the influence of the parameters on the lining force was analysed,and a construction optimisation scheme was proposed.

关键词： Double-arch tunnel Cracking mechanism Distributed optical-fibre sensing Inversion analysis Total strain rotating crack model Loadstructure method

Collaborative force and shape control for large composite fuselage panels assembly

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Chinese Journal of Aeronautics 2023年第7期36卷 213-225页

作者： Zhanghao WANG Dongsheng LI Liheng SHEN yi sui Yunong ZHAI School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China Ningbo Institute of Technology Beihang UniversityNingbo 315832China COMAC Shanghai Aircraft Manufacturing Co. LtdShanghai 201324China

This study proposed a force and shape collaborative control method that combined method of influence coefficients(MIC)and the elitist nondominated sorting genetic algorithm(NSGA-II)to reduce the shape deviation caused by manufacturing errors,gravity deformation,and fixturing errors and improve the shape accuracy of the assembled large composite fuselage *** study used a multi-point flexible assembly system driven by hexapod parallel *** proposed method simultaneously considers the shape deviation and assembly load of the ***,a multi-point flexible assembly system driven by hexapod parallel robots was introduced,with the relevant variables defined in the control *** addition,the corresponding mathematical model was ***,MIC was used to establish the prediction models between the displacements of actuators and displacements of panel shape control points,deformation loads applied by the *** the modeling,the shape deviation of the panel and the assembly load were used as the optimization objectives,and the displacements of actuators were optimized using ***,a typical composite fuselage panel case study was considered to demonstrate the effectiveness of the proposed method.

关键词： Assembly Collaborative force and shape control Composite panel Hexapod parallel robots Method of influence coefficients

Local scour around bridge abutments under ice covered condition-an experimental study

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International Journal of Sediment Research 2015年第1期30卷 39-47页

作者： Peng WU Faye HIRSHFIELD Jue-yi sui Environmental Engineering Program University of Northern British Columbia

The local scour around bridge abutments has been an active research topic for many *** very few studies have been conducted regarding the impacts of ice cover on the local scour phenomenon around bridge abutments.A series of ice covered flume experiments were conducted in this *** shape factors of different abutment types in the local scour were *** ice cover,the shape factor for semi-circular abutments ranges from 0.66～*** different non-uniform sediments were used with D50s of 0.58 mm,0.50 mm,and0.47 mm *** types of ice cover,namely smooth and rough cover,were created to simulate the impacts of ice cover around the *** scour depth was analyzed under different *** contours of the scour holes were plotted to show the bed morphology and sediment deposition around bridge *** empirical relationship between maximum scour depth,densimetric Froude number and sediment size was developed.

关键词： Bridge abutment Ice cover Local scour Maximum scour depth

Is tenecteplase ready to replace alteplase to treat acute ischaemic stroke? The knowns and unknowns

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Stroke & Vascular Neurology 2022年第1期7卷 1-5页

作者： yi Dong yi sui Xin Cheng David Z Wang Department of Neurology Huashan Hospital Fudan UniversityShanghaiChina Department of Neurology Shenyang Brain HospitalShenyang Medical CollegeShenyangChina Department of Neurology The First People's Hospital of ShenyangShenyangChina Department of Neurology Barrow Neurological InstitutePhoenixArizonaUSA

Tenecteplase(TNKase,TNK-tPA or TNK)is a thrombolytic agent derived from the tissue plasminogen activator(tPA).It is a 527-amino acid glycoprotein developed by replacing three amino acids at the T,N and K positions of the glycoprotein structure of tPA under genetic recombinant *** replacing threonine 103 with asparagine,asparagine 117 with glutamine and a tetra-alanine at amino acids 296–299,TNK is about eightfold more potent in dissolving clot,80-fold higher resistance to plasminogen activator inhibitor-1 and 14-fold enhanced relative fibrin specificity,and with a longer half-life(20 min).1 Hence,TNK is administered as a single intravenous bolus.

关键词： technology replace replacing

Formation of the Kuiper Belt by Long Time-Scale Migration of Jovian Planets

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Chinese Journal of Astronomy and Astrophysics 2006年第5期6卷 588-596页

作者： Jian Li Li-Yong Zhou yi-sui Sun Department of Astronomy Nanjing University Nanjing 210093

The orbital migration of Jovian planets is believed to have played an important role in shaping the Kuiper Belt. We investigate the effects of the long time-scale （2 ×107 yr） migration of Jovian planets on the orbital evolution of massless test particles that are initially located beyond 28 AU. Because of the slowness of the migration, Neptune＇s mean motion resonances capture test particles very efficiently. Taking into account the stochastic behavior during the planetary migration and for proper parameter values, the resulting concentration of objects in the 3：2 resonance is prominent, while very few objects enter the 2：1 resonance, thus matching the observed Kuiper Belt objects very well. We also find that such a long time-scale migration is favorable for exciting the inclinations of the test particles, because it makes the secular resonance possible to operate during the migration. Our analyses show that the us secular resonance excites the eccentricities of some test particles, so decreasing their perihelion distances, leading to close encounters with Neptune, which can then pump the inclinations up to 20°.

关键词： celestial mechanics -- Kuiper Belt -- methods numerical -- solar system formation