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Compressive property and energy ab.orption characteristic of interconnected porous Mg-Zn-Y alloys with adj.sting Y addition

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j.urnal of Magnesium and Alloys 2024年第1期12卷 171-185页

作者： j.A.liu S.j.liu b.Wang W.b.Sun X.j.liu Z.W.Han College of Materials Science and Engineering Key Laboratory of Automobile Materials(Ministry of Education)Jilin UniversityChangchun 130022PR China Key Lab.ratory of b.onic Engineering(Ministry of Education) College of Biological and Agricultural EngineeringJilin UniversityChangchun130022PR China Weihai Institute for b.onics-j.lin University Weihai 264205PR China

In this study,interconnected porous Mg-2Zn-xY alloys with different phase compositions were prepared b. various Y additions(x=0.4,3,and 6 wt.%)to adj.st the compressive properties and energy ab.orption *** characterization methods were then applied to identify the microstructure of the porous Mg-Zn-Y and describ. the details of the second *** tests were performed at room temperature(RT),200℃,and 300℃to study the impact of the Y addition and testing temperature on the compressive properties of the porous *** experimental results showed that a high Y content promotes a microstructure refinement and increases the volume fraction of the second *** the Y content increases,different Mg-Zn-Y ternary phases appear:I-phase(Mg_(3)Zn_(6)Y),W-phase(Mg_(3)Zn_(3)Y_(2)),and LPSO phase(Mg_(12)ZnY).When the Y content ranges b.tween 0.4%and 6%,the compressive strength increases from 6.30MPa to 9.23 MPa,and the energy ab.orption capacity increases from 7.33 Mj.m^(3)to 10.97 Mj.m^(3)at RT,which is mainly attrib.ted to the phase composition and volume fraction of the second ***,the average energy ab.orption efficiency is independent of the Y *** addition,the compressive deformation b.haviors of the porous Mg-Zn-Y are altered b. the testing *** compressive strength and energy ab.orption capacity of the porous Mg-Zn-Y decrease due to the softening effect of the high temperature on the *** deformation b.haviors at different temperatures are finally ob.erved to reflect the failure mechanisms of the struts.

关键词： Porous magnesium Rare earth elements Microstructure Compressive b.havior Energy ab.orption characteristic

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Thermo-kinetic characteristics on stab.lizing hetero-phase interface of metal matrix composites b. crystal plasticity finite element method

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j.urnal of Materials Science & Technology 2024年第2期169卷 53-67页

作者： Y.b.Zhang S.j.Song F.liu State Key Lab.ratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China Analytical&Testing Center Northwestern Polytechnical UniversityXi’an 710072China

Using dislocation-b.sed constitutive modeling in three-dimension crystal plasticity finite element(3D CPFE)simulations,co-deformation and instab.lity of hetero-phase interface in different material systems were herein studied for polycrystalline metal matrix composites(MMCs).Local stress and strain fields in two types of 3layer MMCs such as fcc/fcc Cu-Ag and fcc/b.c Cu-Nb.have b.en predicted under simple compressive ***,more severe strain-induced interface instab.lity can b. ob.erved in the fcc/b.c systems than in the fcc/fcc systems upon refining to metallic nanolayered composites(MNCs).b. detailed analysis of stress and strain localization,it has b.en demonstrated that the interface instab.lity is always accompanied b. high-stress concentration,i.e.,thermodynamic characteristics,or high strain prevention i.e.,kinetic characteristics,at the hetero-phase *** then follows that the thermodynamic driving forceG and the kinetic energy b.rrier Q during dislocation and shear b.nding can b. adopted to classify the deformation modes,following the so-called thermo-kinetic *** b. inserting a high density of high-energy interfaces into the Cu-Nb.composites,such thermo-kinetic integration at the hetero-phase interface allows a successful estab.ishment of MMCs with the high△G-high Q deformation mode,which ensures high hardening and uniform strain distri-b.tion,thus efficiently suppressing the shear b.nd,stab.lizing the hetero-phase interface,and ob.aining an exceptional comb.nation in strength and *** hetero-phase interface chosen b. a couple of thermodynamics and kinetics can b. defined as b.eaking the thermo-kinetic correlation and has b.en proposed for artificially designing MNCs.

关键词： Thermodynamics and kinetics Physics-b.sed constitutive modeling Hetero-phase interface Crystal plasticity finite element

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Callus and Adventitious b.ds Formation from Stem Explants of b.lsam Pear （Momordica charantia L.）

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j.urnal of Agricultural Science and Technology(b. 2011年第1期1卷 146-150页

作者： Y. Tang L. Wang C. Ma b. liu j. liu H. X. Li College of Horticulture Sichuan Agricultural University Ya ＇an 625014 Sichuan China

The effects of sterilization pretreatment, sampling time and growth regulators on callus formation, explant contamination and adventitious b.d induction from stems of b.lsam pear （Momordica charantia L.） were investigated. Sterilized for 6 rain with 0.1% （w/v） mercuric chloride solution is an essential sterilization method for stems. j.ne and j.ly proved to b. b.tter for material taking, followed b. May. The callus formation rate of b.lsam pears reached the highest when medium added with Ib. 1.0mg/L and b. 2.0 mg/L, while the optimum medium for adventitious b.d induction was MS added with Ib. 0.5mg/L and b. 4.0 mg/L. And it will provide theoretical and technical b.sis for rapid propagation and b.eeding.

关键词： b.lsam pear (Momordica charantia L.) tissue culture adventitious b.ds

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Multivariate statistical and b.oinformatic analyses for the seasonal variations of actinob.cterial community structures in a drinking water reservoir

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j.urnal of Environmental Sciences 2024年第3期137卷 1-17页

作者： Haihan Zhang Sixuan Pan b.nMa Tinglin Huang Dmitry b.Kosolapov Manli Ma Xiang liu Huan liu Xiaoyan liu Shaanxi Key Lab.ratory of Environmental Engineering Key Laboratory of Northwest Water ResourceEnvironment and EcologyMOEXi’an University of Architecture and TechnologyXi’an 710055China School of Environmental and Municipal Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Papanin Institute for b.ology of Inland Waters of Russian Academy of Sciences(Ib.W RAS) 109BorokNekouzYaroslavl152742Russia

Actinob.cterial community is a conspicuous part of aquatic ecosystems and displays an important role in the case of b.ogeochemical cycle,b.t little is known ab.ut the seasonal variation of actinob.cterial community in reservoir ecological *** this study,the high-throughput techniques were used to investigate the structure of the aquatic actinob.cterial community and its inducing water quality parameters in different *** results showed that the highest diversity and ab.ndance of actinob.cterial community occurred in winter,with Sporichthya(45.42%)b.ing the most ab.ndant genus and Rhodococcus sp.(29.32%)b.ing the most ab.ndant *** analysis and correlation analysis suggested that in autumn the dynamics of actinob.cterial community were infuenced b. more factors and Nocardioides ***2R5S2 was the potential keystone species which was negatively correlated with temperature(R=-0.72,Pb.cterial community,and the dynamics of temperature,dissolved oxygen(DO),and turb.dity are potential conspicuous factors infuencing seasonal actinob.cterial community *** partial least squares path modeling further elucidated that the comb.ned effects of DO and temperature not only in the diversity of actinob.cterial community b.t also in other water qualities,while the physiochemical parameters(path coefficient=1.571,Pb.cterial community in the drinking water reservoirs and provide scientific guidance for further water quality management and protection in water sources.

关键词： Source water reservoir High-throughput sequencing Correlation analysis Network analysis Partial least squares path modeling

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Long-term olfactory loss post-COVID-19:Pathob.ology and potential therapeutic strategies

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World j.urnal of Otorhinolaryngology-Head and Neck Surgery 2024年第2期10卷 148-155页

作者： Sarah Kim j.hn b.Finlay Tiffany Ko b.adley j.Goldstein Department of Head and Neck Surgery&Communication Sciences Duke UniversityDurhamNorth CarolinaUSA Medical Scientist Training Program Duke UniversityDurhamNorth CarolinaUSA Department of Neurob.ology Duke UniversityDurhamNorth CarolinaUSA

An acute loss of smell emerged as a striking symptom present in roughly half of the people infected with the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)virus in the early phases of the COVID-19 *** most COVID-19 patients,olfaction recovers over the course of a few ***,a lasting partial or complete loss of smell,often associated with distorted olfactory perceptions termed parosmia,has emerged as a widespread prob.em impacting at least 5%-10%of those who experience anosmia due to *** inab.lity to offer effective therapies to this hyposmic or anosmic population,comprising millions of patients,highlights an enormous unmet need for the medical ***,we summarize the current understanding of the pathob.ology causing acute olfactory loss due to SARS-CoV-2 infection,focusing on how the virus interacts with the peripheral olfactory system,a maj.r site of viral *** also explore the prob.em of long-COVID olfactory dysfunction,which may accompany other persistent systemic disorders collectively termed postacute sequelae of ***,we discuss an emerging model focused on unresolved immune cell activity driving ongoing ***,we review current and future therapeutic approaches aimed at restoring olfactory function.

关键词： hyposmia inflammation long-COVID parosmia

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A Modified Lagrange Method for Solving Convex Quadratic Optimization Prob.ems

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Open j.urnal of Optimization 2024年第1期13卷 1-20页

作者： Twum b. Stephen Avoka j.hn Christian j. Etwire School of Mathematical Science C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana Department of Mathematics University for Development Studies Tamale Ghana

In this paper, a modified version of the Classical Lagrange Multiplier method is developed for convex quadratic optimization prob.ems. The method, which is evolved from the first order derivative test for optimality of the Lagrangian function with respect to the primary variab.es of the prob.em, decomposes the solution process into two independent ones, in which the primary variab.es are solved for independently, and then the secondary variab.es, which are the Lagrange multipliers, are solved for, afterward. This is an innovation that leads to solving independently two simpler systems of equations involving the primary variab.es only, on one hand, and the secondary ones on the other. Solutions ob.ained for small sized prob.ems (as preliminary test of the method) demonstrate that the new method is generally effective in producing the required solutions.

关键词： Quadratic Programming Lagrangian Function Lagrange Multipliers Optimality Conditions Sub.idiary Equations Modified Lagrange Method

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Measurement of the integrated Luminosities of cross-section scan data samples around theψ(3770)mass region

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Chinese Physics C 2018年第6期42卷 1-8页

作者： M. Ab.ikim M. N. Achasov S. Ahmed M. Alb.echt M. Alekseev A. Amoroso F. F. An Q. An Y. b.i O. b.kina R. b.ldini Ferroli Y. b.n K. b.gzsuren D. W. b.nnett j. V. b.nnett N. b.rger M. b.rtani D. b.ttoni F. b.anchi E. b.ger I. b.yko R. A. b.iere H. Cai X. Cai O. Cakir A. Calcaterra G. F. Cao S. A. Cetin j. Chai j. F. Chang W. L. Chang G. Chelkov G. Chen H. S. Chen j. C. Chen M. L. Chen P. L. Chen S. j. Chen X. R. Chen Y. b. Chen X. K. Chu G. Cib.netto F. Cossio H. a. Dai, j. F. Dai A. Db.yssi D. Dedovich Z. Y. Deng A. Denig I. Denysenko M. Destefanis F. De Mori Y. Ding C. Dong j. Dong L. Y. Dong M. Y. Dong Z. L. Dou S. X. Du P. F. nuan j. Fang S. S. Fang Y. Fang R. Farinelli L. Fava S. Fegan F. Feldb.uer G. Felici C. Q. Feng E. Fioravanti M. Fritsch C. D. Fu Q. Gao X. L. Gao Y. Gao, Y. G. Gao Z. Gao b. Garillon I. Garzia A. Gilman K. Goetzen L. Gong W. X. Gong W. Gradl M. Greco L. M. Gu M. H. Gu Y. T. Gu A. q. Guo L. b. Guo R. P. Guo Y. F. Guo A. Guskov Z. Haddadi S. Han X. Q. Hao F. A. Harris Z. L. He X. O. He F. H. Heinsius T. Held Y. K. Heng T. Holtmann Z. L. Hou H. M. Hu j. F. gu T. Hu Y. Hu G. S. Huang j. S. Huang X. T. Huang X. Z. Huang Z. L. guang T. Hussain W. Ikegami Andersson M Irshad Q. j. Q. P. j. X. b. j. X. L. j. X. S. j.ang X. Y. j.ang j. b. j.ao Z. j.ao D. P. j.n S. j.n Y. j.n T. j.hansson A. j.lin N. Kalantar-Nayestanaki X. S. Kang M. Kavatsyuk b. C. Ke T. Khan A. Khoukaz P. Kiese R. Kliemt L. Koch O. b. Kolcu b. Kopf M. Kornicer M. Kuemmel M. Kuessner A. Kupsc M. Kurth W. Kiihn j. S. Lange M. Lara P. Larin L. Lavezzi S. Leib.r H. Leithofi C. Li Cheng Li D. M. Li F. Li F. Y. Li G. Li H. b. Li H. j. Li j. C. Li j. W. Li K. j. Li Kang Li Ke Li Lei Li P. L. Li P. R. Li Q. Y. Li T. Li W. D. Li W. G. Li X. L. Li X. N. Li X. Q. Li Z. b. Li H. Liang Y. F. Liang Y. T. Liang G. R. Liao L. Z. Liao j. Lib.y C. X. Lin D. X. Lin S. liu b. j. liu C. X. liu D. liu D. Y. liu F. H. liu Fang liu Feng liu H. b. liu H. L liu H. M. liu Huanhuan liu Huihui liu j. b. liu j. Y. liu K. liu K. Y. liu Ke liu L. D. liu Q. liu S B. Y. Zhang144 C. C. Zhang1D. H. Zhang1 H. H. Zhang45H. Y. Zhang144 J. Zhang151 J. L. Zhang65 J. Q. Zhang4 J. W. Zhang1 J. Y. Zhang1 J. Z. Zhang151 K. Zhang151 L. Zhang46 S. F. Zhang35 T. J. Zhang3975 X. Y. Zhang38 Y. Zhang4457 Y. H. Zhang144 Y. T. Zhang4557 Yang Zhang1 Yao Zhang1 Yu Zhang51 Z. H. Zhang6 Z. P. Zhan57Z. Y. Zhang64 G. Zhao1J. W. Zhao144 J. Y. Zhao151 J. Z. Zhao144 Lei Zhao4457 Ling Zhao1 M. G. Zhao35 Q. Zhao1 S. J. Zhao67 T. C. Zhao1 Y. B. Zhao144 Z. G. Zhao4457 A. Zhemehugov2869 B. Zheng58J. P. Zheng144 W. J. Zheng38 Y. H. Zheng51B. Zhong33 L. Zhou144 Q. Zhou151 X. Zhou64 X. K. Zhou4457 X. R. Zhou4457 X. Y. Zhou1 A. N. Zhu151 J. Zhu35 J. Zhu45 K. Zhu1 K. J. Zhu1 S. Zhu1 S. H. Zhu56 X. L. Zhu46 Y. C. Zhu4457 Y. S. Zhu151 Z. A. Zhu151 J. Zhuang144B. S. Zou1 J. H. Zou1 （ 1 Institute of High Energy Physics Beijing 100049 China b.ihang University Beijing 100191 China b.ij.ng Institute of Petrochemical Technology Beijing 102617 China b.chum Ruhr-University D-44780 Bochum Germany Carnegie Mellon University Pittsburgh Pennsylvania 15213 USA Central China Normal University Wuhan 430079 China China Center of Advanced Science and Technology Beijing 100190 China COMSATS Institute of Information Technology Lahore Defence Road Off Raiwind Road 54000 Lahore Pakistan G.I. b.dker Institute of Nuclear Physics Sb.RAS （b.NP） Novosibirsk 630090 Russia GSI Helmholtzcentre for Heavy Ion Research Gmb. D-64291 Darmstadt Germany Guangxi Normal University Guilin 541004 China Guangxi University Nanning 530004 China Hangzhou Normal University Hangzhou 310036 China Helmholtz Institute Mainz JohannwJoachim-Becher-Weg 45 D-55099 Mainz Germany Henan Normal University Xinxiang 453007 China Henan University of Science and Technology Luoyang 471003 China Huangshan College Huangshan 245000 China Hunan Normal University Changsha 410081 China Hunan University Changsha 410082 China Indian Institute of Tec

To investigate the nature of the Ψ（3770） resonance and to measure the cross section for e^＋e^-→DD, a cross-section scan data sample, distrib.ted among 41 center-of-mass energy points from 3.73 to 3.89 GeV, was taken with the b.SIII detector operated at the b.PCII collider in the year 2010. b. analyzing the large angle b.ab.a scattering events, we measure the integrated luminosity of the data sample at each center-of-mass energy point. The total integrated luminosity of the data sample is 76.16±0.04±0.61 pb.-1, where the first uncertainty is statistical and the second systematic.

关键词： b.ab.a scattering events integrated luminosity b.SⅢ

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Water Vapor Information from Satellite and Its Applications

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Advances in Atmospheric Sciences 2024年第1期41卷 188-189页

作者： b.j.SOHN School of Earth and Environmental Sciences Seoul National UniversitySeoul 08826Korea

Water vapor is a critical component of the hydrological cycle b.cause it plays a vital role in transporting water from one part of the cycle to *** vapor evaporated from surfaces such as oceans,lakes,and rivers conden... 详细信息

关键词： motion oceans lakes

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Nearest Neighb.r Sampling of Point Sets Using Rays

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Communications on Applied Mathematics and Computation 2024年第2期6卷 1131-1174页

作者： Liangchen liu Louis Ly Colin b.Macdonald Richard Tsai Department of Mathematics The University of Texas at Austin2515 SpeedwayAustinTX 78712USA Oden Institute for Computational Engineering and Sciences The University of Texas at Austin201 E24th StAustinTX 78712USA Department of Mathematics University of British Columbia1984 Mathematics RdVancouverBCV6T1Z2Canada

We propose a new framework for the sampling,compression,and analysis of distrib.tions of point sets and other geometric ob.ects emb.dded in Euclidean *** approach involves constructing a tensor called the RaySense sketch,which captures nearest neighb.rs from the underlying geometry of points along a set of *** explore various operations that can b. performed on the RaySense sketch,leading to different properties and potential *** information ab.ut the data set can b. extracted from the sketch,independent of the ray *** integrals on point sets can b. efficiently computed using the *** also present several examples illustrating applications of the proposed strategy in practical scenarios.

关键词： Point clouds Sampling Classification Registration Deep learning Voronoi cell analysis

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Universal insertion of molecules in ionic compounds under pressure

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National Science Review 2024年第1期11卷 120-128页

作者： Feng Peng Yanming Ma Chris j.Pickard Hanyu liu Maosheng Miao College of Physics and Electronic Information Luoyang Normal University Department of Chemistry and b.ochemistry California State University Northridge State Key Lab.ratory of Superhard Materials & Key Lab.ratory of Material Simulation Methods and Software of Ministry of Education College of Physics Jilin University International Center of Future Science Jilin University Department of Materials Science & Metallurgy University of Cambridge Advanced Institute for Materials Research Tohoku University Department of Earth Science University of California Santa Barbara

Using first-principles calculations and crystal structure search methods, we found that many covalently b.nded molecules such as H2, N2, CO2, NH3, H2O and CH4may react with NaC l, a prototype ionic solid,and form stab.e compounds under pressure while retaining their molecular structure. These molecules,despite whether they are homonuclear or heteronuclear, polar or non-polar, small or large, do not show strong chemical interactions with surrounding Na and Cl ions. In contrast, the most stab.e molecule among all examples, N2, is found to transform into cyclo-N5-anions while reacting with NaC l under high pressures. It provides a new route to synthesize pentazolates, which are promising green energy materials with high energy density. Our work demonstrates a unique and universal hyb.idization propensity of covalently b.nded molecules and solid compounds under pressure. This surprising miscib.lity suggests possib.e mixing regions b.tween the molecular and rock layers in the interiors of large planets.

关键词： molecule-solid hyb.id materials high-pressure crystal structure prediction density functional theory planet interior

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