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Associations between coagulation factorⅫ,coagulation factorⅪ,and stability of venous thromboembolism:A case-control study

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World Journal of Clinical Cases 2022年第9期10卷 2700-2709页

作者： Yan Meng You Li Yan-jun Ye Qiang Ma jun-bo Zhang Hao Qin Yang-Yang deng Hong-Yan Tian Department of Peripheral Vascular Diseases The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061Shannxi ProvinceChina Department of Breast and Thyroid Surgery Baoji People’s HospitalBaoji 721000Shannxi ProvinceChina

BACKGROUND Pulmonary embolism(PE)is a fatal clinical syndrome that is generally caused by an embolus from unstable deep venous thrombosis(DVT).However,clinical and biochemical factors that are related to the stability of DVT are not fully *** To evaluate the relationships between plasma antigen levels of factor XII(FXII:Ag)and factor XI(FXI:Ag)with the stability of *** Patients with DVT and no PE,DVT and PE,and controls with no DVT or PE that matched for age,gender,and comorbidities were included in this ***:Ag and FXI:Ag in peripheral venous blood were measured using enzyme-linked immunosorbent *** Using the 95th percentile of FXI:Ag in patients with DVT and PE as the cut-off,a higher FXI:Ag was associated with a higher risk of unstable DVT(odds ratio:3.15,95%confidence interval:1.18-8.43,P=0.019).Stratified analyses showed consistent results in patients≤60 years(P=0.020),but not in those>60 years(P=0.346).CONCLUSION Higher plasma FXI:Ag might be a marker for unstable DVT,which might be associated with PE in these patients.

关键词： Case-control study Deep venous thrombosis Factor XI Factor XII Pulmonary embolism

Genetic Analysis of the Resistance to Aspergillus flavus Infection in Maize (Zea mays L.)

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Agricultural Sciences in China 2009年第6期8卷 761-765页

作者： deng De-xiang JIANG Si-xia WANG Yi-jun BIAN Yun-long CHEN Jian-jian JIA bo Jiangsu Province Key Laboratory of Crop Genetics and Physiology~Key Laboratory of Plant Functional Genomics Ministry of Education Yangzhou University Yangzhou 225009 P.R. China Yangzhou Environment and Resources Technical College Yangzhou 225009 P.R. China

Maize （Zea mays L.）, one of main crops in the world, is easily susceptible to Aspergillusflavus （Link： fr） infection, resulting huge loses worldwide. Breeding for A. flavus resistance has been proved an efficient way to solve the problem of aflatoxin contamination. Genetic analysis of the sources of resistance to *** in maize is necessary for this purpose. The complete diallel crosses of 6 inbred lines with different resistance to *** infection were implemented. Inoculation categorical data of each cross were analyzed with the additive-dominant and additive-dominant-epitasis genetic models. Results indicated some crosses fitted the 2 major genes with additive-dominant-epitasis genetic model. Others fitted the major gene and polygene mixed model. Moreover, the additive, dominant, and epitasis effects varied in crosses. The *** resistance was controlled by both major gene and polygene.

关键词： maize Aspergillus flavus resistance genetic model

Rapid Growth of Ice Dendrite in Acoustically Levitated and Highly Undercooled Water

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Chinese Physics Letters 2002年第10期19卷 1543-1546页

作者： Lü Yong-jun Xie Wen-jun Wei Bing-bo Department of Applied Physics Northwestern Polytechnical University Xi'an 710072

Water drops with diameters ranging from 2.5 to 4mm are highly undercooled by up to 24K with the acoustic levitation technique. Compared to the case of water contained in a tube, acoustic levitation has efficiently avoided the heterogeneous nucleation from container walls and consequently increased the undercooling level. However, the cavitation effect induced by ultrasound may prematurely catalyse nucleation, which hinders the further achievement of bulk undercooling. The growth velocity of ice dendrite determined experimentally in highly undercooled water is characteristic of rapid dendritic growth, which reaches 0.17m/s at the undercooling of 24K. The Lipton-Kurz-Trivedi dendritic growth model is used to predict the kinetic characteristics of rapid growth of ice dendrite under high undercooling conditions, which shows good agreement with the experimental results.

关键词： Ice

Approximating Nash Equilibrium for Optimal Consumption in Stochastic Growth Model with Jumps

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Acta Mathematica Sinica,English Series 2022年第9期38卷 1621-1642页

作者： Li jun bo Tong Qing LI School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026P.R.China Wu Wen Tsun Key Laboratory of Mathematics Chinese Academy of ScienceHefei 230026P.R.China

In this paper,we study a class of dynamic games consisting of finite agents under a stochastic growth model with *** jump process in the dynamics of the capital stock of each agent models announcements regarding each agent in the game occur at Poisson distributed random *** aim of each agent is to maximize her objective functional with mean-field interactions by choosing an optimal consumption *** prove the existence of a fixed point related to the so-called consistence condition as the number of agents goes *** upon the fixed point,we establish an optimal feedback consumption strategy for all agents which is in fact an approximating Nash equilibrium which describes strategies for each agent such that no agent has any incentive to change her strategy.

关键词： Stochastic growth jump processes mean field interaction optimal consumption fixed point approximating Nash equilibrium

Target models and waveform design for detection in MIMO radar

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Science China(Information Sciences) 2014年第1期57卷 268-279页

作者： TANG jun LUO jun TANG bo DU JinSong Electronic Engineering Department of Tsinghua University China Marine Development & Research Center Shenyang Institute of Automation Chinese Academy of Sciences

In this paper,we propose a general target model for multiple-input multiple-output(MIMO)*** types of targets are *** each type of target,we develop a corresponding optimum waveform designing method to optimize detection *** on Chernof-Stein lemma,we use relative entropy as the performance *** show that the optimum waveform designing method can obtain better detection performance than traditional orthogonal waveform designing method.

关键词： MIMO radar waveform designing relative entropy

Structure of Independent Sets in Direct Products of Some Vertex-transitive Graphs

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Acta Mathematica Sinica,English Series 2012年第4期28卷 697-706页

作者： Xing bo GENG jun WANG Hua jun ZHANG School of Mathematical Science Dalian University of Technology Department of Mathematics Shanghai Normal University Department of Mathematics Zhejiang Normal University

Let Circ（r, n） be a circular graph. It is well known that its independence number α（Circ（r, n）） = r. In this paper we prove that for every vertex transitive graph H, and describe the structure of maximum independent sets in Circ（r, n） × H. As consequences, we prove for G being Kneser graphs, and the graphs defined by permutations and partial permutations, respectively. The structure of maximum independent sets in these direct products is also described.

关键词： Vertex-transitivity primitivity independence number

Information gain based sensor search scheduling for low-earth orbit constellation estimation

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Journal of Systems Engineering and Electronics 2011年第6期22卷 926-932页

作者： bo Wang jun Li Wei An Yiyu Zhou School of Electronics and Engineering National University of Defense Technology Changsha 410073 R R. China Institute of Radar and Electronic Warfare Equipment Academy of Air Force Beijing 100085 P. R. China

This paper addresses the problem of sensor search scheduling in the complicated space environment faced by the low-earth orbit *** search scheduling methods based on the commonly used information gain are compared via simulations *** a novel search scheduling method in the scenarios of uncertainty observation is proposed based on the global Shannon information gain and beta density based uncertainty *** results indicate that the beta density model serves a good option for solving the problem of target acquisition in the complicated space environments.

关键词： low-earth orbit constellation sensor network scheduling algorithm information gain acquisition.

Causes and controlling pattern of sand hazards at the Danghe Reservoir of Dunhuang in Northwest China

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Journal of Mountain Science 2016年第11期13卷 1973-1983页

作者： XIE Sheng-bo QU Jian-jun PANG Ying-jun Institute of Desertification Studies Chinese Academy of Forestry Beijing 100091 China

Sand hazards are serious at the Danghe Reservoir of Dunhuang,and efforts to control sand are ineffective because disaster-causing mechanisms are currently *** source of sandy materials,dynamic environment of blown sand,and controlling measures of the reservoir area are investigated using different methods,such as granularity analyses,wind regime and sand transport field observation and analyses,sand drift potential ***,the sandy materials are found to derive chiefly from the Mingsha Mountain on the north side of the reservoir *** addition,sand grain in the range of 0.50-0.25 mm and 0.25-0.10 mm are *** prevailing sand-moving wind originates from the N direction,accounting for 15.38% of the yearly total,which coincides in the same direction with sand source,thereby increasing the severity of sand hazards in the reservoir *** yearly sand DP is 1386.59 VU,the yearly RDP is 567.31 VU,the yearly RDP/DP is 0.41,and the yearly RDD is 183.15°.In the windy season(mainly in summer),sand materials are blown by wind from north to south,and then blocked by the Danghe *** sand materials then move with an approximate east-west trend into the river channel and produce sediment,thereby causing *** propose that the sand-controlling pattern of the Danghe Reservoir is dominated by sand blocking in the outer fringe and sand fixing in the inner *** windbreak and sand fixation to control sandy material movement into the river channel plays an important role in retarding sedimentation and extending the useful life of the Danghe Reservoir.

关键词： Danghe Reservoir Sand source Wind direction Sand drift potential

Grain-size effect on dislocation source-limited hardening and ductilization in bulk pure Ni

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Journal of Materials Science & Technology 2023年第23期154卷 9-21页

作者： Kai Hu jun Yi bo Huang Gang Wang Institute of Materials School of Materials Science and Engineering Shanghai University Shanghai 200444 China

Dislocation source-limited hardening and ductilization is an effective strategy to obtain superior strength-ductility synergy in some engineering structural metals. Recent works demonstrated that the synergy could be enhanced by grain-size reduction. However, the mechanism of grain-size dependence is still a mystery. In this work, bulk pure Ni produced by electrodeposition and subsequent annealing, with grain sizes ranging from ∼20 nm to ∼20 µm, were methodically investigated to unravel the mechanism of the grain-size effect on dislocation source-limited hardening and ductilization. The high-density nano-twinning in the as-electrodeposited nanograined specimens exhibited better thermodynamic stability than the peers with random high-angle grain boundaries, leading to fine recrystallized grains with low-density dislocations. The low dislocation density enabled extra hardening beyond grain boundary strengthening via yield-point behavior with grain sizes ranging from ∼110 nm to ∼10 µm and extra ductilization over ∼500 nm. This work demonstrated that the prerequisite for dislocation source-limited hardening was that the dislocation density of the specimen should be lower than the size-dependent critical value of ((1.1 × 107 /d ) m^(–2), d is the grain size in unit of the meter) where a transition from forest-dominated hardening to dislocation source-limited hardening could occur. On the other hand, dislocation source-limited ductilization only worked when the grain size was comparable to/larger than the theoretical dislocation mean slip distance. Dislocation source-limited ductilization resulted from more room in grains for accumulation of dislocations and deformation nano-stacking faults enabling the higher work hardening rate. This work offered an altogether new avenue to obtain stronger and more ductile metallic materials through utilizing grain-size dependent dislocation source-limited hardening and ductilization.

关键词： Dislocation source-limited hardening Dislocation source-limited ductilization Grain size Yield point Hall-Petch slope