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Simulation and evaluation study of atmospheric aerosol nonsphericity as a function of particle size

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Particuolog. 2024年第7期90卷 281-291页

作者： Qianjun mao Xin Nie School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China Colleg. of New.Energ. and Materials Northeast Petroleum UniversityDaqing163318China

Aerosol nonsphericity causes g.eat uncertainty in radiative forcing.assessments and climate *** considerable studies have attempted to quantify this uncertainty,the relationship betw.en aerosol nonsphericity and particle size is usually not considered,thus reducing.the accuracy of the *** this study,a coupled inversion alg.rithm combining.an improved stochastic particle sw.rm optimization alg.rithm and ang.lar lig.t scattering.is used for the nonparametric estimation of aerosol nonsphericity variation w.th particle size,and the optimal sample selection method is employed to screen the *** on the verification of inversion accuracy,the variation of aerosol aspect ratio w.th particle size based on the ellipsoidal model in g.obal reg.ons has been obtained from Aerosol Robotic Netw.rk(AERONET)data,and the effect of nonsphericity on radiative forcing.and dry deposition has been *** results show.that the aspect ratio increases w.th particle size in all reg.ons,w.th the maximum rang.ng.from 1.4 to 1.8 in the desert,reflecting.the differences in aerosol composition at different particle *** radiation calculations,considering.aerosol nonsphericity makes the aerosol cooling.effect w.aker and surface radiative fluxes increase,but hardly chang.s the aerosol absorption,w.th maximum differences of 9.22%and 22.12%at the bottom and top of the atmosphere,***,the differences in radiative forcing.betw.en aspect ratios as a function of particle size and not varying.w.th particle size are not sig.ificant,averag.ng.less than 2%.Besides,the aspect ratio not varying.w.th particle size underestimates the deposition velocity of small particles and overestimates that of larg. particles compared to that as a function of particle size,w.th maximum differences of 7%and 4%,respectively.

关键词： Aerosol nonsphericity Inversion Aspect ratio Radiative forcing Dry deposition velocity

Pressure-induced hydrog.n-dominant hig.-temperature superconductors

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National Science Review 2024年第7期11卷 14-16页

作者： Ho-kw.ng.mao Shang.ai Advanced Research in Physical Sciences Center for Hig. Pressure Science and Technolog. Advanced Research

Recent studies of hydrog.n-dominant（superhydride） materials have led to putative discoveries of near-room temperature superconductivity at hig. pressures. The idea started more than half-a-century ag. as a by-product of the quest for metallic hydrog.n for w.ich a natural consequence of its very hig. Debye temperature and phonon frequency due to the very low.mass of the hydrog.n atoms w.uld lead to a hig. superconducting.critical temperature （Tc） in w.ak coupling.Bardeen-Cooper-Schrieffer（BCS） expression.

关键词： HYDRIDE LANTHANUM

Proof of Tw. Supercong.uences of Truncated Hyperg.ometric Series_(4)F_(3)

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Acta Mathematica Sinica,Eng.ish Series 2024年第4期40卷 1015-1028页

作者： g.o Shuai mao Department of Mathematics Nanjing University of Information Science and TechnologyNanjing 210044P.R.China

In this paper,w. prove tw. supercong.uences conjectured by Z.-*** via the w.lf-Zeilberg.r *** of them is,for any prime p>3,4F3[7/6 1/2 1/2 1/2 1/6 1 1]-1/8]-1/2≡p(-2/p)+p^(3)/4(2/p)Ep-3 (mod p^(4))w.ere(·/p)stands f... 详细信息

关键词： Supercong.uence truncated hyperg.ometric series w.lf–Zeilberg.r method Euler numbers Leg.ndre symbol

One bird,multiple stones:The race to find a g.ne of dominant neg.tive effect in w.eat

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The Crop Journal 2024年第4期12卷 951-952页

作者： Long.mao State Key Laboratory of Crop g.ne Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China

In the current issue of The Crop Journal,Chen et al.[1]reports map-based cloning.of a w.eat g.ne that show.d temperaturedependent pleiotropic effects on multiple traits including.plant heig.t,leaf shape,spike and g.ain morpholog.,and according.y w.s named w.A1 for w.eat Plant Architecture *** mutant w.s first observed among.EMS-treated plants and repeatedly appeared in multiple occasions.

关键词： w.eat bird repeatedly

Dynamic steric confinement effect expands the frontier of Cu-catalyzed asymmetric proparg.lic aminations

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Science China Chemistry 2024年第10期67卷 3181-3183页

作者： Peng.Chen mao-mao Zhang.w.n-Jing.Xiao Liang.Qiu Lu Eng.neering.Research Center of Photoenerg. Utilization for Pollution Control and Carbon Reduction Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079China w.han Institute of Photochemistry and Technolog. Wuhan 430082China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical Physics(LICP)Chinese Academy of SciencesLanzhou 730000China School of Chemistry and Chemical Eng.neering Henan Normal UniversityXinxiang 453007China

Chiralα-tertiary amines and related azacycles are commonly found in many natural products,pharmaceuticals and ag.ochemicals[1].Copper-catalyzed asymmetric proparg.lic amination(APA)reactions have been established as a reliable method to access enantio-enriched proparg.lic amines,larg.ly due to the seminal contribution of Nishibayashi et al.[2]and van Maarseveen et al.[3]in 2008.

关键词： catalyzed asymmetric amines

Heat Storag. Performance of PCM in a Novel Vertical Pointer-Shaped Finned Latent Heat Tank

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Journal of Thermal Science 2024年第2期33卷 422-434页

作者： mao Qianjun ZHU Yuanyuan LI Tao School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China

The heat storag. performance of latent heat storag. systems is not g.od due to the poor thermal conductivity of phase chang. *** this paper,a new.type of pointer-shaped fins combining.rectang.lar and triang.lar fins has been employed to numerically simulate the melting.process in the heat storag. tank,and the fin g.ometry parameter effects on heat storag. performance have been *** results indicate that compared w.th the bare tube and the rectang.lar finned tank,the melting.time of the phase chang. material in the pointer-shaped finned tank is reduced by 64.2%and 15.1%,*** closer the tip of the triang.lar fin is to the hot w.ll,the better the heat transfer *** optimal heig.t of the triang.lar fin is about 8 *** the number of fins from 4 to 6 and from 6 to 8 reduces the melting.time by 16.0%and 16.7%***,increasing.the number of fins from 8 to 10 only reduces the melting.time by 8.4%.w.en the fin dimensionless leng.h is increased from 0.3 to 0.5 and from 0.5 to 0.7,the melting.time is shortened by 17.5%and 13.0%.But the melting.time is only reduced by 2.9%w.en the dimensionless fin leng.h is increased from 0.7 to *** optimising.the desig. of the thermal storag. system,the results can provide a reference value.

关键词： thermal energ. storag. phase chang. material pointer-shaped fins heat storag. performance

Equilibrium Strateg. of the Pursuit-Evasion g.me in Three-Dimensional Space

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IEEE/CAA Journal of Automatica Sinica 2024年第2期11卷 446-458页

作者： Nuo Chen Linjing.Li w.nji mao School of Artificial Intellig.nce University of Chinese Academy of SciencesBeijing 100049 Institute of Automation Chinese Academy of SciencesBeijing 100190China

The pursuit-evasion g.me models the strateg.c interaction among.players, attracting.attention in many realistic scenarios, such as missile g.idance, unmanned aerial vehicles, and targ.t defense. Existing.studies mainly concentrate on the cooperative pursuit of multiple players in tw.-dimensional pursuit-evasion g.mes. How.ver, these approaches can hardly be applied to practical situations w.ere players usually move in three-dimensional space w.th a three-deg.ee-of-freedom control. In this paper,w. make the first attempt to investig.te the equilibrium strateg. of the realistic pursuit-evasion g.me, in w.ich the pursuer follow. a three-deg.ee-of-freedom control, and the evader moves freely. First, w. describe the pursuer's three-deg.ee-of-freedom control and the evader's relative coordinate. w. then rig.rously derive the equilibrium strateg. by solving.the retrog.essive path equation according.to the Hamilton-Jacobi-Bellman-Isaacs(HJBI) method, w.ich divides the pursuit-evasion process into the navig.tion and acceleration phases. Besides, w. analyze the maximum allow.ble speed for the pursuer to capture the evader successfully and provide the strateg. w.th w.ich the evader can escape w.en the pursuer's speed exceeds the threshold. w. further conduct comparison tests w.th various unilateral deviations to verify that the proposed strateg. forms a Nash equilibrium.

关键词： Differential g.me equilibrium strateg. pursuit-evasion g.me threedeg.ee-of-freedom control

Neddylation Reg.lation of Immune Responses

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Research 2024年第3期2023卷 545-559页

作者： Hong.ei mao Xin Lin Yi Sun Cancer Institute(Key Laboratory of Cancer Prevention and Intervention China National Ministry of Education)of the Second Affiliated Hospital and Institute of Translational MedicineZhejiang University School of MedicineHangzhou 310029China Institute for Immunolog. School of MedicineTsinghua UniversityBeijing 100084China Chang.ing.Laboratory Beijing 102206China Cancer Center of Zhejiang.University Hangzhou 310029China Zhejiang.Provincial Clinical Research Center for Cancer HangzhouZhejiang ProvinceChina Key Laboratory of Molecular Biolog. in Medical Sciences HangzhouZhejiang ProvinceChina Research Center for Life Science and Human Health Binjiang Institute of Zhejiang UniversityHangzhou 310053China.

Neddylation plays a vital role in post-translational modification, intricately shaping.the reg.lation of diverse biolog.cal processes, including.those related to cellular immune responses. In fact, neddylation exerts control over both innate and adaptive immune systems via various mechanisms. Specifically, neddylation influences the function and survival of innate immune cells, activation of pattern recog.ition receptors and g.P-AMP synthase–stimulator of interferon g.nes pathw.ys, as w.ll as the release of various cytokines in innate immune reactions. Moreover, neddylation also g.verns the function and survival of antig.n-presenting.cells, w.ich are crucial for initiating.adaptive immune reactions. In addition, neddylation reg.lates T cell activation, proliferation, differentiation, survival, and their effector functions, thereby ensuring.an appropriate adaptive immune response. In this review. w. summarize the most recent finding. in these aspects and delve into the connection betw.en dysreg.lated neddylation events and immunolog.cal disorders, especially inflammatory diseases. Lastly, w. propose future directions and potential treatments for these diseases by targ.ting.neddylation.

关键词： activation thereby initiating

First Passag. Density of Brow.ian Motion w.th Tw.-sided Piecew.se Linear Boundaries

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Acta Mathematica Sinica,Eng.ish Series 2024年第6期40卷 1505-1520页

作者： Zhen YU mao Zai TIAN Center for Applied Statistics School of StatisticsRenmin University of ChinaBeijing 100872P.R.China School of Mathematics and Data Science Changji UniversityChangji 831100P.R.China

The first passag. time has many applications in fields like finance,econometrics,statistics,and ***,explicit formulas for the first passag. density have only been obtained for a few.*** paper derives an explicit formula for the first passag. density of Brow.ian motion w.th tw.sided piecew.se continuous boundaries w.ich may have some points of *** are used to obtain a simplified formula for estimating.the first passag. ***,the results are also g.neralized to the case of tw.-sided g.neral nonlinear *** can be easily carried out w.th Monte Carlo method and it is demonstrated for several typical tw.-sided boundaries that the proposed approximation method offers a hig.ly accurate approximation of first passag. density.

关键词： Boundary non-crossing.probability first density passag. density tw.-sided piecew.se continuous boundaries Brow.ian motion