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Atmospheric and Oceanic Science Letters 2019年第3期12卷 155-161页

作者： JIAO Yang wu Renguang Center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina

The authors investigate the characteristics of propagation and the influence on tropical precipitation of 9–29-day intraseasonal variation over midlatitude East Asia during boreal winter, and find that the intraseasonal wind signal can propagate both eastward and southward. In the case of eastward propagation, the intraseasonal wind signal is mainly confined to the midlatitudes, featuring eastward migration of anomalous cyclones and anticyclones. In the case of southward propagation, intraseasonal meridional wind perturbations may extend from the mid to the low latitudes, and even the equatorial region. The accompanying wind convergence/divergence induces anomalous precipitation in the near-equatorial regions, forming a north–south dipole precipitation anomaly pattern between the southern South China Sea and the eastern China– Japan region. An anomalous meridional overturning circulation plays an important role in linking tropical and midlatitude intraseasonal wind and precipitation variations.

关键词： Intraseasonal wind variation midlatitude East Asia eastward and southward propagation tropical precipitation

Possible Origins of the Western Pacific Warm Pool Decadal Variability

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Advances in Atmospheric Sciences 2012年第1期29卷 169-176页

作者： GAN Bolan wu Lixin Physical Oceanography Laboratory Ocean University of China Qingdao 266100

In this study, the impacts of the Pacific Decadal Oscillation （PDO） and the Atlantic Multidecadal Oscillation （AMO） on the western Pacific warm pool （WPWP） were investigated. Our results show that the WPWP is linked with the PDO and the AMO at multiple time scales. On the seasonal time scales, the WPWP and the PDO/AMO reinforce each other, while at decadal time scales the forcing roles of the PDO and the AMO dominate. Notably, a positive PDO tends to enlarge the WPWP at both seasonal and decadal time scales, while a positive AMO tends to reduce the WPWP at decadal time scales. Furthermore, the decadal variability of the WPWP can be well predicted based on the PDO and AMO.

关键词： decadal variability western Pacific warm pool Pacific decadal oscillation Atlantic multi-decadal oscillation

Robust stabilization of uncertain nonholonomic systems with strong nonlinear drifts

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控制理论与应用（英文版） 2008年第4期6卷 427-430页

作者： Yuqiang wu Xiuyun ZHENG Institute of Automation Qufu Normal University Qufu Shandong 273165 China

This paper investigates the robust stabilization of the nonholonomic control systems with strongly non- linear uncertainties. In order to make the state scaling effective and to prevent the finite time escape phenomenon from happening, the switching control strategy based on the state measurement of the first subsystem is employed to achieve the asymptotic stabilization. The recursive integrator backstepping technique is applied to the design of the robust controller. The simulation example demonstrates the efficiency and robust features of the proposed method.

关键词： Nonholonomic systems with uncertainties Switching control strategy Global asymptotic stabilization

Variant selection induced by electropulsing:Optimization in the microstructure of selective laser melted Ti-6Al-4 V alloy

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Journal of Materials Science & Technology 2023年第28期159卷 219-224页

作者： Xudong Yan Xiaofeng Xu Yang Zhao Yachong Zhou Zhicheng wu Lai Wei Yongqiang Yu Chao wu Key Laboratory of Automobile Materials Ministry of Educationand Department of Materials Science and EngineeringJilin UniversityChangchun 130025China Weihai Bionics Research Institute-Jilin University Weihai 264402China Key Laboratory of Bionic Engineering Ministry of Education Jilin UniversityChangchun 130025China

Selective laser melting(SLM)is one of the most popular addi-tive manufacturing(AM)*** a near-net shape man-ufacturing method,it offers many advantages from the manufac-turing perspective and has attracted more and more current re-search interests in fabricating the workhorse titanium alloy Ti-6Al-4 V[1].Since the high cooling rate of the molten pool and complicated thermal cycle will result in a fine and metastableαmicrostructure,generally,post-process is required to optimize the microstructure for the widespread application *** iso-static pressing(HIP)and traditional heat treatment are the main post-treatments for the SLM-built Ti-6Al-4 V component[2].How-ever,HIP is a high-cost process and most heat treatments could not achieve a microstructure with high strength-ductility synergy and thermostability,e.g.,sub-transus water quenched microstruc-ture showed superior mechanical properties,but the martensite is far from thermodynamic equilibrium;the sup-transus air cooled microstructure has high thermostability but exhibits low elonga-tion[3,4].

关键词： microstructure alloy martensite

Some Metric Properties of Sets Related to Luroth Expansion

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wuhan University Journal of Natural Sciences 2022年第2期27卷 93-98页

作者： DENG Jiang wu Yuhan School of Mathematics and Statistics Hubei University of EducationWuhan 430205HubeiChina School of Mathematics and Statistics Wuhan UniversityWuhan 430072HubeiChina

This paper is mainly concerned with scrambled sets for Luroth *** is shown that all scrambled sets have null Lebesgue measure and there exists a scrambled set with full Hausdorff dimension.

关键词： dimension map. Hausdorff

Progresses in Sustainable Recycling Technology of Spent Lithium-Ion Batteries

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Energy & Environmental Materials 2022年第4期5卷 1012-1036页

作者： Kaidi Du Edison Huixiang Ang Xinglong wu Yichun Liu Faculty of Chemistry Northeast Normal UniversityChangchunJilin 130024China MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal UniversityChangchunJilin 130024China Natural Sciences and Science Education National Institute of EducationNanyang Technological UniversitySingapore 637616Singapore

The number of lithium-ion batteries(LIBs)is steadily increasing in order to meet the ever-growing demand for sustainable energy and a high quality of life for *** the same time,the resulting large number of LIB waste certainly poses safety hazards if it is not properly disposed of and will seriously harm the environment due to its inherent toxicity due to the use of toxic ***,the consumption of many scarce precious metal resources is behind the mass production of *** the light of severe environmental,resources,safety and recycling problems,recycling spent LIBs have become an essential urgently needed action to achieve sustainable social *** review therefore critically analyses the value and the need for recycling of spent LIBs from a variety of resources and the environment.A range of existing technologies for recycling and reusing spent LIBs,such as pretreatment,pyrometallurgy,hydrometallurgy,and direct recycled methods,is subsequently summarized *** addition,the benefits and problems of the methods described above are analyzed in *** also introduces recycling progress of other LIB components,such as anodes,separators,and electrolytes,as well as the high-value ***,the prospects for recycling LIBs are addressed in four ways(government,users,battery manufacturers,and recyclers).This review should contribute to the development of the recycling of used LIBs,particularly in support of industrialization and recycling processes.

关键词： cathode materials pretreatment recycling spent lithium-ion batteries valuable metals

Comparative study of gut microbiota from captive and confiscatedrescued wild pangolins

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Journal of Genetics and Genomics 2021年第9期48卷 825-835页

作者： Chunbing Liu Jingyang Hu Yajiang wu David M.Irwin wu Chen Zhigang Zhang Li Yu State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan School of Life SciencesYunnan UniversityKunming 650091China Guangzhou Zoo&Guangzhou Wildlife Research Center Guangzhou 510070China Department of Laboratory Medicine and Pathobiology University of TorontoTorontoOntario M5S 1A8Canada

Pangolins are among the most critically endangered animals due to widespread poaching and worldwide trafficking. Captive breeding is considered to be one way to protect them and increase the sizes of their populations. However, comparative studies of captive and wild pangolins in the context of gut microbiota are rare. Here, the gut microbiome of captive and confiscated-rescued wild pangolins is compared, and the effects of different periods of captivity and captivity with and without antibiotic treatment are *** show that different diets and periods of captivity, as well as the application of antibiotic therapy, can alter gut community composition and abundance in pangolins. Compared to wild pangolins, captive pangolins have an increased capacity for chitin and cellulose/hemicellulose degradation, fatty acid metabolism, and short-chain fatty acid synthesis, but a reduced ability to metabolize exogenous substances. In addition to increasing the ability of the gut microbiota to metabolize nutrients in captivity, captive breeding imposes some risks for survival by resulting in a greater abundance of antibiotic resistance genes and virulence factors in captive pangolins than in wild pangolins. Our study is important for the development of guidelines for pangolin conservation, including health assessment, disease prevention, and rehabilitation of wild pangolin populations.

关键词： Pangolin Gut microbiome Captivity Antibiotic resistance genes Virulence factors

AFFINE SPINOR DECOMPOSITION IN THREE-DIMENSIONAL AFFINE GEOMETRY

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Acta Mathematica Scientia 2022年第6期42卷 2301-2335页

作者： Chengran wu Hongbo LI Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China Academy of Mathematics and Systems Science University of Chinese Academy of SciencesChinese Academy of SciencesBeijing 100190China

Spin group and screw algebra,as extensions of quaternions and vector algebra,respectively,have important applications in geometry,physics and *** threedimensional projective geometry,when acting on lines,each projective transformation can be decomposed into at most three harmonic projective reflections with respect to projective lines,or equivalently,each projective spinor can be decomposed into at most three orthogonal Minkowski bispinors,each inducing a harmonic projective line *** this paper,we establish the corresponding result for three-dimensional affine geometry:with each affine transformation is found a minimal decomposition into general affine reflections,where the number of general affine reflections is at most three;equivalently,each affine spinor can be decomposed into at most three affine Minkowski bispinors,each inducing a general affine line reflection.

关键词： spin group spinor decomposition affine transformation line geometry afine line reflection

Orbit Design for Twin-spacecraft Space VLBI

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空间科学学报 2015年第4期35卷 502-510页

作者： ZHANG Cheng wu Xia ZHENG Jianhua wu Ji Key Laboratory of Microwave Remote Sensing Center for Space Science and Applied ResearchChinese Academy of Sciences Key Laboratory of Electronics and Information Technology for Space Systems Center for Space Science and Applied ResearchChinese Academy of Sciences

Space Very Long Baseline Interferometry(S-VLBI) is an aperture synthesis technique utilizing an array of radio telescopes including ground telescopes and space orbiting *** can achieve much higher spatial resolution than that from the ground-only *** this paper,a new concept of twin spacecraft S-VLBI has been proposed,which utilizes the space-space baselines formed by two satellites to obtain larger and uniform uv coverage without atmospheric influence and hence achieve high quality images with higher angular *** orbit selections of the two satellites are *** imaging performance and actual launch conditions are all taken into account in orbit designing of the twin spacecraft *** schemes of orbit design using traditional elliptical orbits and circular orbits are *** design results can be used for different scientific ***,these designing ideas can provide useful references for the future Chinese millimeter-wave S-VLBI mission.

关键词： VLBI Twin spacecraft Orbit design

p53 promotes the expansion of regulatory T cells via DNMT3a-and TET2-mediated Foxp3 expression in sepsis

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Burns & Trauma 2023年第1期11卷 497-509页

作者： Hui Zhang Tiantian wu Chao Ren Ning Dong Yao wu Yongming Yao Translational Medicine Research Center Medical Innovation Research Division and Fourth Medical Center of the Chinese PLA General HospitalBeijingPeople’s Republic of China Department of Hepatobiliary Surgery Peking University International HospitalNo.1 Science Park RoadLife Science ParkChangping DistrictBeijing 100034People’s Republic of China Department of Respiratory and Critical Care Medicine Beijing Institute of Respiratory MedicineBeijing Chao-Yang HospitalCapital Medical UniversityNo.8 Worker’s Stadium South RoadChao-yang DistrictBeijingChina

Background:Immunosuppression is an important characteristic of sepsis and is closely related to poor *** T cells(Tregs)contribute to immune suppression by inhibiting effector T cell(Teff)proliferation and *** aimed to investigate the role of p53 in Treg expansion after ***:We constructed a sepsis model in wild-type(WT)and p53f/f/CD4-Cre+mice by cecal ligation and puncture(CLP)and evaluated the proportions of CD4+CD25+Foxp3+Tregs by flow *** expression levels of forkhead/winged helix transcription factor p3(Foxp3),DNA methyltransferase enzyme(DMNT)3a and ten-eleven translocation(TET)2 were examined using quantitative real-time PCR and Western blot ***-specific demethylation region(TSDR)methylation sites in cells were analyzed by bisulfite-sequencing ***,the direct binding of p53 to the Dnmt3a and TET2 promoters was illustrated using a luciferase *** suppressive ability of Tregs was indicated by enzyme-linked immunosorbent assay analysis of cytokine levels and the proliferation of cocultured ***,mortality rates after CLP were compared among WT and p53f/f/CD4-Cre+***:The proportion of CD4+CD25+Foxp3+Tregs was significantly reduced in p53f/f/CD4-Cre+mice compared to WT mice after *** enhanced expression of Foxp3 in WT mice was downregulated in the p53f/f/CD4-Cre+*** found decreased DMNT3a and increased TET2 levels after ***,the dysregulation of DNMT3a and TET2 was significantly reversed in p53f/f/CD4-Cre+*** underwent increased demethylation in p53f/f/CD4-Cre+*** activity indicated direct binding of p53 to the promoter regions of DNMT3a and TET2 to regulate their ***,Tregs from p53f/f/CD4-Cre+CLP mice exhibited limited suppressive ability,as indicated by the reduced production of transforming growth factor-βand interleukin 10(IL-10).In the coculture system,Teffs showed preserved production of IL-2,differentiation in

关键词： Sepsis Immunosuppression p53 Regulatory T cells Foxp3 DNMT3a TET2