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measurements of dihadron correlations relative to the event plane in Au+Au collisions at√^(S)NN=200 GeV

chinese Physics c 2021年第4期45卷 198-241页

作者： H.Agakishiev m.m.Aggarwal Z.Ahammed A.V.Alakhverdyants I.Alekseev J.Alford B.D.Anderson c.D.Anson D.Arkhipkin G.S.Averichev J.Balewski D.R.Beavis N.K.Behera R.Bellwied m.J.Betancourt R.R.Betts A.Bhasin A.K.Bhat H.Bichsel J.Bieleik J.Bielcikova B.Biritz L.c.Bland W.Borowski J.Bouchet E.Braidot A.V.Brandin A.Bridgeman S.G.Brovko E.Bruna S.Bueltmann I.Bunzarov T.P.Burton X.Z.cai H.caines m.calderon de la Barca Sanchez D.cebra R.cendejas m.c.cervantes Z.chajecki P.chaloupka S.chattopadhyay H.F.chen J.H.chen J.Y.chen L.chen J.cheng m.cherney A.chikanian K.E.choi W.christie P.chung m.J.m.codrington R.corliss J.G.cramer H.J.crawford S.Dash A.Davila Leyva L.c.De Silvat R.R.Debbe T.G.Dedovich A.A.Derevschikov R.Derradi de Souza L.Didenko P.Djawotho S.m.Dogra X.Dong J.L.Drachenberg J.E.Draper J.c.Dunlop L.G Efimov m.Elnim J.Engelage G Eppley m.Estienne L.Eun O.Evdokimov R.Fatemi J.Fedorisin A.Feng R.G.Fersch P.Filip E.Finch V.Fine Y.Fisyak c.A.Gagliardi D.R.Gangadharan A.Geromitsos F.Geurts P.Ghosh Y.N.Gorbunov A.Gordon O.Grebenyuk D.Grosnick S.m.Guertin A.Gupta W.Guryn B.Haag O.Hajkova A.Hamed L-X.Han J.W.Harris J.P.Hays-Wehle m.Heinz S.Heppelmann A.Hirsch E.Hjort G.W.Hoffmann D.J.Hofiman B.Huang H.Z.Huang T.J.Humanic L.Huo G.Igo P.Jacobs W.W.Jacobs c.Jena F.Jin J.Joseph E.G.Judd S.Kabana K.Kang J.Kapitan K.Kauder H.Ke D.Keane A.Kechechyan D.Kettler D.P.Kikola J.Kiryluk A.Kisiel V.Kizka A.G.Knospe D.D.Koetke T.Kollegger J.Konzer I.Koralt L.Koroleva W.Korsch L.Kotchenda V.Kouchpil P.Kravtsov K.Krueger m.Krus L.Kumar P.Kurnadi m.A.c.Lamont J.m.Landgraf S.LaPointe J.Lauret A.Lebedev R.Lednicky J.H.Lee W.Leight m.J.LeVine c.Lil L.Li N.Li W.Li X.Li X.Li Y.Li Z.m.Li m.A.Lisa F.Liu H.Liu J.Liu T.Ljubicic W.J.Llope R.S.Longacre W.A.Love Y.Lu E.V.Lukashov X.Luo G.L.ma Y.G.mai D.P.mahapatra R.majka O.I.mall L.K.mangotra R.manweiler S.margetis c.markert H.masui H.S.matis Yu.A.matulenko D.meDonald T.S.mcShane A.meschanin R.milner N.G.minaev S.mioduszewski A.mischke m.K.mitrovski B.mohanty m.m.mondal B.morozov D.A.morozov m.G.munhoz m Argonne National Laboratory Argonnellinois 60439USA Brookhaven National Laboratory UptonNew York 11973USA University of califomia BerkeleyCaliformnia 94720USA University of california DavisCalifornia 95616USA University of califormnia Los AngelesCalifomia 90095USA Universidade Estadual de campinas Sao PauloBrazil University of Illinois at chicago ChicagoIlinois 60607USA creighton University OmahaNebraska 68178USA czech Technical University in Prague FNSPEPrague11519Czech Republic Nuclear Physics Institute AS cR 25068 Rez/PragueCzech Republic University of Frankfurt FrankfurtGermany Institute of Physics Bhubaneswar 751005India Indian Institute of Technology MumbaiIndia Indiana University BloomingtonIndiana 47408USA Alikhanov Instiute for Theoretical and Experimental Physics MoscowRussia University of Jammu Jammu 180001India Joint Institute for Nuclear Research Dubna141980Russia Kent State University KentOhio 44242USA University of Kentucky LexingtonKentucky40506-0055USA Institute of modern Physics LanzhouChina Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720USA massachusetts Institute of Technology CambridgeMA 02139-4307USA mx-Planck-Institut fir Physik MunichGermany michigan State University East LansingMichigan 48824USA moscow Engineering Physics Institute Moscow Russia NIKHEF and Utrecht University AmsterdamThe Netherlands Ohio State University ColumbusOhio 43210USA Old Dominion University NorfolkVA23529USA Panjab University Chandigarh 160014India PennsyIvania State University University ParkPennsylvania 16802USA Institute of High Energy Physics ProtvinoRussia Purdue University West LafayetteIndiana 47907USA Pusan National University PusanRepublic of Korea University of Rajasthan Jaipur 302004India Rice University HoustonTexas 77251USA Universidade de Sao Paulo Sao PauloBrazil University of Science&Technology of china Hefei 230026.China Shandong University JinanShandong 250100China Shanghai Institute of Applied Physics Shanghai 201800Chi

Dihadron azimuthal correlations containing a high transverse momentum(pr)trigger particle are sensit-ive to the properties of the nuclear medium created at RHIc through the strong interactions occurring between the traversing parton and the medium,*** measurements revealed a strong modification to di-hadron azimuthal correlations in Au+Au collisions with respect to ptp and d+Au *** modification in-creases with the collision centrality,suggesting a path-length or energy density dependence to the je-quenching *** paper reports STAR measurements of dihadron azimuthal correlations in mid-central(20%-60%)Au+Au collisions at√^(S)NN=200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane,Ф_(s)=|Ф_(t)-ψ_(Ep)|.The azimuthal correlation is studied as a function of both the trigger and associated particle *** subtractions of the combinatorial background and anisotropic flow,assuming Zero Yield At minimum(ZYAm),are *** correlation results are first discussed with subtraction of the even harmonic(elliptic and quadrangu-lar)flow *** away-side correlation is strongly modifed,and the modification varies withФ_(s),with a double-peak structure for out-of-plane trigger *** near-side ridge(long range pseudo-rapidity△_(η)correla-tion)appears to drop with increasingФ_(s)while the jet-like component remains approximately *** correla-tion functions are further studied with the subtraction of odd harmonic triangular flow background arising from *** is found that the triangular flow,while responsible for the majority of the amplitudes,is not sufficient to explain theφs-dependence of the ridge or the away-side double-peak *** dropping ridge withФ_(s)could be attributed to aФ_(s)-dependent lliptie anisotropy;however,the physics mechanism of the ridge remains an open *** with aФ_(s)-dependent elliptic flow,the away-side correlation structure

关键词： relativistic heavy ion collisions dihadron correlations jet-medium interactions anisotropic flow background event plane

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Application of Smooth Particle Hydrodynamics method for modelling Blood Flow with Thrombus Formation

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computer modeling in Engineering & Sciences 2020年第3期122卷 831-862页

作者： m.Al-Saad c.A.suarez A.Obeidat S.P.A.Bordas S.Kulasegaram School of Engineering Cardiff UniversityCardiffCF243AAUK. Department of Engineering Institute of Computational EngineeringUniversity of LuxembourgMaison du Nombre6 Avenue de la Fonte4364 Esch-sur-AlzetteLuxembourg. Department of medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan. Aix marseille Université CNRSCentraleMarseilleLMAMarseilleFrance.

Thrombosis plays a crucial role in atherosclerosis or in haemostasis when a blood vessel is *** article focuses on using a meshless particle-based Lagrangian numerical technique,the smoothed particles hydrodynamic(SPH)method,to study the flow behaviour of blood and to explore the flow parameters that induce formation of a thrombus in a blood *** to its simplicity and effectiveness,the SPH method is employed here to simulate the process of thrombogenesis and to study the effect of various blood flow *** the present SPH simulation,blood is modelled by two sets of particles that have the characteristics of plasma and of platelet,*** simulate coagulation of platelets which leads to a thrombus,the so-called adhesion and aggregation mechanisms of the platelets during this process are modelled by an inter-particle force *** transport of platelets in the flowing blood,platelet adhesion and aggregation processes are coupled with viscous blood flow for various low Reynolds number *** numerical results are compared with the experimental observations and a good agreement is found between the simulated and experimental results.

关键词： Smooth particle hydrodynamics blood flow thrombus arteries platelets.

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cOVID-19 and neurologic manifestations:a synthesis from the child neurologist’s corner

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World Journal of Pediatrics 2022年第6期18卷 373-382页

作者： carolina Valderas Gastón méndez Alejandra Echeverría Nelson suarez Katherin Julio Francisca Sandoval Department of Neurology Hospital Dr.Exequiel González CortésGran Avenida JoséMiguel Carrera 33008900085SantiagoRegión MetropolitanaChile

Background Since December 2019,the SARS-coV-2 virus has been a global health *** main clinical presentation of this virus is a flu-like disease;however,patients with diverse neurologic manifestations have also been *** this review,we attempt to summarize,discuss and update the knowledge of the neurologic manifestations in the pediatric population affected by SARS-coV-2 infection and the pandemic’s effects in children with neurologic *** sources This review analyzes studies found on the Pubmed database using the following keywords:Neurologic manifestations cOVID-19,Neurological cOVID-19,coronavirus,SARS-coV-2,pediatric cOVID-19,cOVID-19 in children,mIS-c,Pediatric Inflammatory multisystem Syndrome,Guillain BarréSyndrome,Stroke,ADEm,and Anti-NmDA *** studies cited were published between 2004 and 2022,and represent the most relevant articles in the *** World Health Organization cOVID-19 online dashboard was assessed to obtain updated epidemiological *** The most common neurologic symptoms in the pediatric population are headache,seizures,encephalopathy,and muscle *** can be present during cOVID-19 or weeks after recovering from *** who presented with multi-system inflammatory syndrome had a higher incidence of neurologic manifestations,which conferred a greater risk of morbidity and *** neuro-pathophysiological mechanisms have been proposed,including direct virus invasion,hyper-inflammatory reactions,multi-systemic failure,prothrombotic states,and immune-mediated *** the other hand,the cOVID-19 pandemic has affected patients with neurologic diseases,making it challenging to access controls,treatment,and *** Various neurologic manifestations have been associated with children’s SARS-coV-2 *** is important to identify and give them proper and opportune treatment because they can be potentially grave and life-threatening;some can lead to long-lasting se

关键词： coronavirus cOVID-19 Neurologic Pediatric SARS-coV-2 mIS-c

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Influence of structural depth of laser-patterned steel surfaces on the solid lubricity of carbon nanoparticle coatings

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Friction 2023年第7期11卷 1276-1291页

作者： Timothy mAcLUcAS Lukas DAUT Philipp GRÜTZmAcHER maria Agustina GUITAR Volker PRESSER carsten GAcHOT Sebastian suarez Frank mÜcKLIcH chair of Functional materials Saarland UniversitySaarbrücken 66123Germany Institute for Engineering Design and Product Development TU WienWien 1060Austria INm–Leibniz Institute for New materials Saarbrücken 66123Germany Department of materials Science&Engineering Saarland UniversitySaarbrücken 66123Germany Saarene-Saarland center for Energy materials and Sustainability Saarbrücken 66123Germany

carbon nanoparticle coatings on laser-patterned stainless-steel surfaces present a solid lubrication system where the pattern's recessions act as lubricant-retaining *** study investigates the influence of the structural depth of line patterns coated with multi-walled carbon nanotubes(cNTs)and carbon onions(cOs)on their respective potential to reduce friction and *** laser interference patterning(DLIP)with a pulse duration of 12 ps is used to create line patterns with three different structural depths at a periodicity of 3.5μm on AISI 304 steel ***,electrophoretic deposition(EPD)is applied to form homogeneous carbon nanoparticle coatings on the patterned *** ball-on-disc experiments are conducted on the as-described surfaces with an alumina counter body at a load of 100 *** results show that the shallower the coated structure,the lower its coefficient of friction(cOF),regardless of the particle ***,with a minimum of just below 0.20,cNTs reach lower cOF values than cOs over most of the testing *** resulting wear tracks are characterized by scanning electron microscopy,transmission electron microscopy,and energy-dispersive X-ray *** friction testing,the cNTs remain in contact,and the immediate proximity,whereas the cO coating is largely *** of structural depth,no oxidation occurs on cNT-coated surfaces,whereas minor oxidation is detected on cO-coated wear tracks.

关键词： solid lubricant coatings carbon nanotubes carbon onions direct laser interference patterning(DLIP)surface structuring electrophoretic deposition(EPD)

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collisional-Radiative calculations of Optically Thin and Thick Plasmas Using the computational Package ABAKO/RAPcAL

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communications in computational Physics 2010年第6期8卷 185-210页

作者： R.Rodriguez R.Florido J.m.Gil J.G.Rubiano D.suarez P.martel E.minguez R.c.mancini Physics Department University of Las Palmas de Gran Canaria35017Spain Nuclear Fusion Institute-Denim Polytechnic University of Madrid28006MadridSpain Department of Physics University of NevadaRenoNV 89557USA

Non-local thermodynamic equilibrium(NLTE)conditions are universal in laboratory and astrophysical plasmas and,for this reason,the theory of NLTE plasmas is nowadays a very active *** populations of atomic levels and radiative properties are essential magnitudes in the study of these plasmas and the calculation of those properties relies on the so-called collisional-radiative(cR)***,the complexity of these models has led to the development of numerous collisionalradiative codes and this is a current research topic in *** this work is presented a versatile computational package,named ABAKO/RAPcAL,to calculate the populations of atomic levels and radiative properties of optically thin and thick,lowto-high Z,NLTE ***/RAPcAL combines a set of analytical approximations which yield substantial savings in computing running time,still comparing well with more elaborated codes and experimental *** order to show the capabilities of the code and the accuracy of its results,calculations of several relevant plasma magnitudes for various plasma situations are shown and compared.

关键词： collisional-radiative model optically thin and thick NLTE plasmas

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Butt-welding Residual Stress of Heat Treatable Aluminum Alloys

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Journal of materials Science & Technology 2007年第2期23卷 217-222页

作者： c.m. cheng Department of Industrial Education National Taiwan Normal University Taipei Taiwan China　

This study, taking three types of aluminum alloys 2024-T351, 6061-T6 and 7075-T6 as experimental materials, conducted single V-groove GTAW （gas tungsten arc welding） butt-welding to analyze and compare the magnitude and differences of residual stress in the three aluminum alloys at different single V-groove angles and in restrained or unrestrained conditions. The results show that the larger the grooving angle of butt joint, the higher the residual tensile stress. Too small grooving angle will lead to dramatic differences due to the amount of welding bead filler metal and pre-set joint geometry. Therefore, only an appropriate grooving angle can reduce residual stress. While welding, weldment in restrained condition will lead to a larger residual stress. Also, a residual stress will arise from the restraint position. The ultimate residual stress of weldment is determined by material yield strength at equilibrium temperature. The higher the yield strength at equilibrium temperature, the higher the material residual stress. Because of its larger thermal conductivity, aluminum alloy test specimens have small temperature differential. Therefore, the residual tensile stress of all materials is lower than their yield strength.

关键词： Residual stress Hole-drilling strain-gage method Aluminum alloy Single-V groove

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Detection of Breaking Waves Using X-Band Pulse Radar in the Nearshore Region

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china Ocean Engineering 2013年第4期27卷 549-556页

作者： Y.c.Lin c.c.chang m.c.Lee H.c.chan J.m.Leu Department of Hydraulic and Ocean Engineering National Cheng-Kung University Department of Soil and Water conservation National Chung Hsing University Department of Hospitality management Taiwan Shoufu University

An X-band pulsed Doppler microwave radar has been used to determine the characteristics of breaking waves. Field experiments were conducted at the Shuang-Si estuary in the north of Taiwan in the winter of 2005. Analyses on maxima radar cross section and Doppler frequency shift are done to characterize wave breaking zones. Based on observations of breaking waves, the wave breaking zones are shown to be located at water depths of 1.8 to 2.2 m in the experimental site. In general, the results indicate that a radar system has the potential to delineate the spatial variation of breaking waves clearly and that this is sufficient to achieve a measurement operation for near-shore air-sea interaction events.

关键词： radar Doppler effect wave breaking coastal zone

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mixing features in an electromagnetic rectangular micromixer for electrolyte solutions

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Journal of Hydrodynamics 2017年第4期29卷 668-678页

作者： m.m.Wen c.N.Kim Department of mechanical Engineering Graduate School Kyung Hee University Department of mechanical Engineering College of Engineering Kyung Hee University

In this study, a new magnetohydrodynamic（mHD） mixer for electrolyte solutions with pumping function is reported, and the mixing performance of the device for two different electrolyte solutions is numerically examined in a uniform magnetic field. Application of different potentials to different electrodes allows the current to be induced. The combination of the induced current and magnetic field yields Lorentz force, resulting in the fluid motion. The numerical simulation for the flows in the device is carried out with commercial software cFX. The validity of cFX code for the present numerical model is presented. The mixing performance of the fluids is investigated in many different cases with different combinations of input voltage of the electrode. This study shows that the mixing performance can be enhanced by applying spatially alternating positive and negative voltages to the electrodes. The present simulation results show that with a magnetic field intensity lower than 0.5 T, a voltage difference smaller than 2.0 V, and an electric conductivity of electrolyte solution of 1.5 S/m the pumping capabilities ranging 1.6×10^（-7）-3.6×10^（-6） kg/s and the mixing indexes higher than 0.90 can be obtained with sophisticated designs of the micromixer.

关键词： mixer electrolyte solution Lorentz force cFX

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Hard rock tunnel boring machine penetration test as an indicator of chipping process efficiency

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Journal of Rock mechanics and Geotechnical Engineering 2017年第4期9卷 611-622页

作者： m.c. Villeneuve Department of Geological Sciences University of Canterbury Christchurch 8140 New Zealand

The transition from grinding to chipping can be observed in tunnel boring machine(TBm) penetration test data by plotting the penetration rate(distance/revolution) against the net cutter thrust(force per cutter) over the full range of penetration rates in the *** penetration test data to the geological and geomechanical characteristics of rock masses through which a penetration test is conducted provides the ability to reveal the efficiency of the chipping process in response to changing geological *** test data can also be used to identify stress-induced tunnel face *** research shows that the strength of the rock is an important parameter for controlling how much net cutter thrust is required to transition from grinding to *** also shows that the geological characteristics of a rock will determine how efficient chipping occurs once it has *** particular,geological characteristics that lead to efficient fracture propagation,such as fabric and mica contents,will lead to efficient *** findings will enable a better correlation between TBm performance and geological conditions for use in TBm design,as a basis for contractual payments where penetration rate dominates the excavation cycle and in further academic investigations into the TBm excavation process.

关键词： Penetration rate Grinding chipping Geological characteristics Face stability

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Hydrodynamics of the interceptor on a 2-D flat plate by cFD and experiments

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Journal of Hydrodynamics 2015年第6期27卷 919-933页

作者： mANSOORI m. FERNANDES A.c. Department of Naval and Ocean Engineering Federal University of Rio de Janeiro

Nowadays, the use of interceptor by both partial and total dynamic lift crafts is quite common. In this article, a lot of evidence is given regarding the effectiveness of interceptor. The interceptor, when placed at the stern region, changes the pressure distribution around the craft. Its presence affects drag force, lifting force and the position of pressure＇s center leading to a new trim. This study focuses on hydrodynamic effects of interceptors on a 2-D fiat plate based on both computational fluid dynamic （cFD） and experimental approaches. The Reynolds average Navier-Stokes （RANS） equations are used to model the flow around a fixed flat plate with an interceptor at different heights and attack angles. Based on finite volume method and SImPLE algorithm which uses static structures, this model can be analyzed and the RANS results can be compared with the experimental data obtained in the current channel of the laboratory of waves and current of cOPPE/UFRJ （LOc in Portuguese acronym）. According to the results, the increase of pressure at the end of the flat plate was proportional to the interceptor height. In addition, the existence of interceptors can significantly increase the lift force coefficient at high angles of attack also proportional to the interceptor height. The presence of interceptor at the end of the fiat plate increased both the lift coefficient and the drag coefficient but hydrodynamic drag did not grow as fast as the lift coefficient did. The lift coefficient increased much more. Furthermore, the results showed that the interceptor effectiveness is proportional to the boundary layer thickness at the end of the fiat plate. As the interceptor was inside the boundary layer alterations of flow speed led to changes in boundary layer thickness, directly affecting interceptor＇s efficiency. Optimum choice of interceptor height had a great effect on its efficiency, and in choosing it the flow speed and length of the boat must be taken into consideration.

关键词： interceptor craft 2-D fiat plate lifting coefficient Reynolds average Navier-Stokes (RANS) pressure distribution,computational fluid dynamic drag

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