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Transverse momentum balance of dijets in Xe+Xe collisions at the LHC

Nuclear Science and Techniques 2024年第7期35卷 137-146页

作者： Yao Li Shu-Wan Shen sa Wang Ben-Wei Zhang Key Laboratory of Quark&Lepton Physics(mOE)and institute of Particle Physics Central China Normal UniversityWuhan430079China College of Science China Three Gorges UniversityYichang443002China Center for Astronomy and Space Sciences and institute of modern Physics China Three Gorges UniversityYichang443002China Guangdong-Hong Kong Joint Laboratory of Quantum matter Guangdong Provincial Key Laboratory of Nuclear ScienceSouthern Nuclear Science Computing CenterSouth China Normal UniversityGuangzhou510006China

We present a theoretical study of the medium modifications of the p_(T)balance (x_(J)) of dijets in Xe+Xe collisions at■.The initial production of dijets was carried out using the POWHEG+PYTHiA8 prescription,which matches the next-toleading-order (NLO) QCD matrix elements with the parton shower (PS) *** SHELL model described the in-medium evolution of nucleus–nucleus collisions using a transport *** theoretical results of the dijet xJin the Xe+Xe collisions exhibit more imbalanced distributions than those in the p+p collisions,consistent with recently reported ATLAS *** utilizing the interleaved Flavor Neutralisation,an infrared-and-collinear-safe jet flavor algorithm,to identify the flavor of the reconstructed jets,we classify dijets processes into three categories:gluon–gluon (gg),quark–gluon (qg),and quark–quark (qq),and investigated the respective medium modification patterns and fraction changes of the gg,qg,and qq components of the dijet sample in Xe+Xe *** is shown that the increased fraction of qg component at a small x_(J)contributes to the imbalance of the dijet;in particular,the q_(1)g_(2)(quark-jet-leading) dijets experience more significant asymmetric energy loss than the g_(1)q_(2)(gluon-jet-leading) dijets traversing the *** comparing the■of inclusive,■ dijets in Xe+Xe collisions,we observe■.moreover,ρ_(Xe),P_(b),the ratios of the nuclear modification factors of dijets in Xe+Xe to those in Pb+Pb,were calculated,which indicates that the yield suppression of dijets in Pb+Pb is more pronounced than that in Xe+Xe owing to the larger radius of the lead nucleus.

关键词： Heavy-ion collisions Quark-gluon plasma Jet quenching Transverse momentum balance

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Comparison of ERA5 turbulent fluxes at the air-sea interface with measurements from a wave-following platform

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Atmospheric and Oceanic Science Letters 2024年第3期 34-38页

作者： sa?d Benjeddou Denis Bourras Christopher Luneau Aix marseille Université National Center for Scientific ResearchMediterranean Institute of Oceanography Observatory of the Sciences of the Universe Pythéas institute National Center for Scientific Research

Turbulent fluxes at the air-sea interface were estimated with data collected in 2011-2020 with a low-profile platform named OCARiNA during eight experiments in five regions:2011,2015,and 2016 in the iroise Sea;2012 in the tropical Atlantic;2014 in the Chilie-Peru upwelling;2017 and 2018 in the mediterranean Sea,and 2018 and 2020 in *** observations were carried out with moderate winds(2-10 m s-1) and average wave heights of 1.5 *** this study,the authors used the fluxes calculated by the bulk method using OCARiNA-sampled data as the *** data can validate the fluxes estimated from ERAS reanalysis *** OCARiNA and ERA5 data were taken *** do this,the authors established an algorithm to extract the OCARiNA data as closely as possible to the reanalysis data in time and *** measurements of the OCARiNA platform can conclude on the relevance of the widely used reanalysis data.

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Exact solutions for magnetohydrodynamic nanofluids flow and heat transfer over a permeable axisymmetric radially stretching/shrinking sheet

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Chinese Physics B 2024年第2期33卷 108-114页

作者： U.S.mahabaleshwar G.P.Vanitha L.m.Pérez Emad H.Aly i.Pop Department of Studies in mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de F´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of mathematics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on the magnetohydrodynamic impact on the axisymmetric flow of Al_(2)O_(3)/Cu nanoparticles suspended in H_(2)O past a stretched/shrinked *** the use of partial differential equations and the corresponding thermophysical characteristics of nanoparticles,the physical flow process is *** resultant nonlinear system of partial differential equations is converted into a system of ordinary differential equations using the suitable similarity *** transformed differential equations are solved *** of the magnetic parameter,solid volume fraction and stretching/shrinking parameter on momentum and temperature distribution have been analyzed and interpreted *** skin friction and Nusselt number were also *** addition,existence of dual solution was deduced for the shrinking sheet and unique solution for the stretching ***,Al_(2)O_(3)/H_(2)O nanofluid flow has better thermal conductivity on comparing with Cu/H_(2)O ***,it was found that the first solutions of the stream are stable and physically realizable,whereas those of the second ones are unstable.

关键词： magnetohydrodynamic nanofluid stretching/shrinking sheet axisymmetric flow analytical solution suction/injection

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A review of control strategies used for morphing aircraft applications

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Chinese Journal of Aeronautics 2024年第4期37卷 436-463页

作者： muhammed S.PARANCHEERiViLAKKATHiL Jafar S.PiLAKKADAN Rafic m.AJAJ mohammadreza AmOOZGAR Davood AsaDi Yahya ZWEiRi michael i.FRiSWELL Department of Aerospace Engineering Khalifa University of Science and TechnologyAbu DhabiUnited Arab Emirates Department of Aerospace Engineering Advanced Research and Innovation Center(ARIC)Khalifa University of Science and TechnologyAbu DhabiUnited Arab Emirates Department of mechanical Materials&Manufacturing EngineeringUniversity of NottinghamNottingham NG72RDUK Department of Aerospace Engineering Adana Alparslan Turkes Science and Technology UniversityTurkey College of Engineering Swansea UniversitySwansea SA18ENUK

This paper reviews the various control algorithms and strategies used for fixed-wing morphing aircraft applications. it is evident from the literature that the development of control algorithms for morphing aircraft technologies focused on three main areas. The first area is related to precise control of the shape of morphing concepts for various flight conditions. The second area is mainly related to the flight dynamics, stability, and control aspects of morphing aircraft. The third area deals mainly with aeroelastic control using morphing concepts either for load alleviation purposes and/or to control the instability boundaries. The design of controllers for morphing aircraft/wings is very challenging due to the large changes that can occur in the structural, aerodynamic, and inertial characteristics. in addition, the type of actuation system and actuation rate/speed can have a significant effect on the design of such controllers. The aerospace community is in strong need of such a critical review especially as morphing aircraft technologies move from fundamental research at a low Technology Readiness Level(TRL) to real-life applications. This critical review aims to identify research gaps and propose future directions. in this paper, research activities/papers are categorized according to the control strategy used. This ranges from simple Proportional integral Derivative(PiD) controllers at one end to complex robust adaptive controllers and deep learning algorithms at the other end. This includes analytical, computational, and experimental studies. in addition, the various dynamic models used and their fidelities are highlighted and discussed.

关键词： Control strategies morphing aircraft Shape morphing Flight dynamics Aeroelasticity

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Hydrological modelling of the Casamance River in its Upstream Section (Basin at Kolda Level) to Predict its Future States as a Function of Different Stresses

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Open Journal of Geology 2024年第2期14卷 143-154页

作者： Coumba Ndiaye saïdou Ndao Laboratory of Water and Environment Sciences and Technologies (LaSTEE) Polytechnic School of Thies (EPT) Thies Senegal UFR Sciences and Technologies (SET) University Iba Der Thiam of Thies (UIDT) Thies Senegal

Flow records for stations in the Casamance basin are incomplete. Several gaps were noted over the 1980-2021 study period, making this study tedious. The aim of this study is to assess the potential impact of climate change on the flow of the Casamance watershed at Kolda. To this end, hydrological series are simulated and then extended using the GR2m rainfall-runoff model, with a monthly time step. Projected climate data are derived from a multi-model ensemble under scenarios SSP2-4.5 (scenario with additional radiative forcing of 4.5 W/m2 by 2099) and SSP5-8.5 (scenario with additional radiative forcing of 8.5 W/m2 by 2099). An analysis of the homogeneity of the rainfall data series from the Kolda station was carried out using KhronoStat software. The Casamance watershed was then delimited using ArcGiS to determine the morphometric parameters of the basin, which will be decisive for the rest of the work. Next, monthly evapotranspiration was calculated using the formula proposed by Oudin et al. This, together with rainfall and runoff, forms the input data for the model. The GR2m model was then calibrated and cross-validated using various simulations to assess its performance and robustness in the Casamance watershed. The version of the model with the calibrated parameters will make it possible to extend Casamance river flows to 2099. This simulation of future flows with GR2m shows a decrease in the flow of the Casamance at Kolda with the two scenarios SSP2-4.5 and SSP5-8.5 during the rainy period, and almost zero flows during the dry season from the period 2040-2059.

关键词： Casamance Watershed Climate Change GR2m Climate models

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The first record of dermochelyid turtles in the Eocene of Tierra del Fuego:new insights on the evolution of the Weddellian faunas

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Advances in Polar Science 2024年第1期35卷 63-77页

作者： Paula BONA Juliana STERLi marcelo saúl de la FUENTE Eduardo OLiVERO marta S.FERNÁNDEZ marcelo REGUERO División Paleontología Vertebrados Museo de La Plata-Anexo IIFacultad de Ciencias Naturales y MuseoUniversidad Nacional de La PlataLa Plata B1900FWAArgentina Consejo Nacional de investigaciones Científicas y Técnicas(CONiCET) Ciudad Autónoma de Buenos Aires C1425FQBArgentina museo Paleontológico Egidio Feruglio Trelew U9100Argentina instituto de Evolución Ecología Histórica y Ambiente-CONICETSan Rafael CP5600Argentina Centro Austral de investigaciones Científicas-CONiCET Universidad Nacional de Tierra del FuegoUshuaia CP 9410Argentina División Paleontología Vertebrados Museo de La PlataUniversidad Nacional de La PlataLa Plata B1900FWAArgentina

The Antarctic Paleogene marine fossil record has been the key to reconstructing the evolution of the Weddellian Sea and final dismemberment of Southern *** this context,Eocene marine vertebrates from Seymour(marambio)island have provided valuable *** present the first Eocene record of marine reptiles from the southern Atlantic Coast of South *** corresponds to several postcranial turtle remains represented by a proximal end of the right humerus,three caudal and one thoracic vertebrae,a fragment of the left pubis,and ten ossicles of the dorsal carapace,coming from the Leticia Formation(late-mid Eocene)at Cabo Tiburones,Tierra del Fuego,*** materials show severalfeatures such as the size and general morphology of the humerus and vertebrae,and the presence of relatively small,irregular,smooth,and unkeeled ossicles,which allow us to assign them to Dermochelyidae *** are a cosmopolitan group ofcryptodiran turtles,registered from the late Cretaceous up to the recent,with some physiological-biological peculiarities(e.g.,endothermy and an exclusive jellyfish-based diet)and characterized by the presence of an osseous carapace formed by *** new finding from the Leticia Formation is an addition to the scarce and extremely fragmentary record of Eocene dermochelyids from the southern seas like those from the La meseta and Submeseta formations(Antarctica)and the Waihao and Burnside formations(New Zealand).This new information allows us to discuss the presence of these turtles in such high latitudes in the past and its implication in the evolution of the Weddellian fauna.

关键词： marine reptiles sea turtles Dermochelyidae Paleogene La meseta Formation Submeseta Formation Leticia Formation

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元代安西王府属官考论

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中国边疆史地研究 2024年第3期34卷 112-124,215页

作者：撒海涛兰州大学西北少数民族研究中心兰州市嘉峪关730020

元代安西王府属官设置,反映了安西王统治秦蜀地区的情况,也可由此审视元朝分封制度及王府设置情形。王相府为安西王政务机关及秦蜀地区最高军政机构,王相身兼辅佐安西王及行使地方权力双重职能。安西王府文职属官名称多袭自金朝,任职者... 详细信息

元代安西王府属官设置,反映了安西王统治秦蜀地区的情况,也可由此审视元朝分封制度及王府设置情形。王相府为安西王政务机关及秦蜀地区最高军政机构,王相身兼辅佐安西王及行使地方权力双重职能。安西王府文职属官名称多袭自金朝,任职者多为地方儒士;武职属官多系从征秦蜀军帅家族成员。此外,王府尚有奥鲁赤、医药提举、掌祠事、经籍官、司天台判等特定职事设置。安西王府属官设置在地方层面复制朝廷的基本功能,是安西王特殊权力的体现。安西王府具有人才储备功能,王府属官不仅负责王府及其领地事务,也可出任地方官。至嗣王阿难答时期,王府属官任免受到中央乃至行省牵制,折射出安西王权力的升降。

关键词：安西王安西王府王相府王府属官秦蜀地区

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Classifying moisture sources associated with snowfall in the mountains of Lesotho

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Journal of mountain Science 2024年第6期21卷 1941-1953页

作者： Alexi m.mARiNAKi Jennifer m.FiTCHETT School of Geography Archaeology and Environmental StudiesUniversity of the WitwatersrandPrivate Bag X3Wits 2050South Africa

An average of eight snowfall events occur each year in the eastern Lesotho *** snowfall events are typically associated with cut-off low(CoLs)systems and mid-latitude ***,the moisture sources of the snowfall are unclassified and *** Hybrid Single-Particle Lagrangian integrated Trajectory(HYSPLiT)model,an air mass back trajectory model,has been used to evaluate moisture source waters locally in southern Africa and internationally in China and *** study uses HYSPLiT to determine the source moisture of snow in Lesotho.A list of all 82 snowfall events in Lesotho spanning 2017 to 2022 was compiled using the Snow Report sa instagram page,including the date and location of snowfall.A 72-hour back trajectory for each snowfall event was initiated for both Afriski and the whole of *** amounts to models of moisture source trajectories for 28 and 82 snowfall days,*** air mass pathways are classified according to their frequency per snowfall event,per month in the snow season,per year and for the full *** this,associated moisture source regions and dominant air mass trajectories were *** study reports that the air mass trajectories associated with Afriski and Lesotho as a whole are very *** most common pathway of air mass trajectories transporting snow-bearing moisture to Lesotho was an inland trajectory from the northern regions of southern *** pathway makes up 16.6%of all trajectories reported and is associated with the Angola Low,the Congo Air Boundary and the *** High Pressure.

关键词： Eastern Lesotho Highlands Afriski Snow Cut-off Lows HYSPLiT Synoptic Climatology

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激光散射特性的红外瞄准镜基线检测方法

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激光杂志 2024年第7期45卷 227-232页

作者：李波莎日娜内蒙古医科大学呼和浩特010110 中国人民解放军32302部队50分队北京101400

为提升武器射击精度,设计激光散射特性的红外瞄准镜基线检测方法。通过固定瞄准镜并利用黑体发射红外激光,在镜子反射后形成红外平行光束,并在瞄准镜视场内生成靶标的像。通过调整瞄准镜分划中心与靶标像中心重合,实现基线检测。采用双... 详细信息

为提升武器射击精度,设计激光散射特性的红外瞄准镜基线检测方法。通过固定瞄准镜并利用黑体发射红外激光,在镜子反射后形成红外平行光束,并在瞄准镜视场内生成靶标的像。通过调整瞄准镜分划中心与靶标像中心重合,实现基线检测。采用双向反射分布函数和基尔霍夫近似理论的驻留相位近似法,分析红外激光的散射特性及波长与散射角对成像精度的影响,从而提高基线检测的精度。实验证明:当入射波长在9.5μm左右时,射击目标粗糙度为8μm时,双站极化散射系数最低,在1.0左右;当散射角在29°左右时,射击目标粗糙度为8μm时,双站极化散射系数最低在0.146左右;校正后目标位置偏差平均为0.01 m。

关键词：激光散射特性红外瞄准镜基线检测反射分布函数基尔霍夫驻留相位近似法

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Exogenous testosterone therapy on choroid in androgen deficiency

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international Journal of Ophthalmology(English edition) 2024年第8期17卷 1489-1494页

作者： Volkan Yeter Nurullah Koçak merve Kalyoncu Ramazan Aşçi Nurşen Aritürk Department of Ophthalmology Ondokuz Mayıs UniversitySamsun 55139Turkey Department of Urology Ondokuz Mayıs UniversitySamsun 55139Turkey

Aim:To investigate the effects of exogenous testosterone treatment on the choroidal parameters in patients with androgen ***:Right eyes of 24 patients with androgen deficiency and 31 healthy volunteers were included in the *** eyes were scanned for subfoveal choroidal thickness(SFCT),choroidal vascularity index(CVi),choroidstromal area(C-sa),choroid-luminal area(C-LA),choroidstromal to luminal area ratio(CSLR),and the choroidal parameters within central 1500μm of the macula(CVi1500,C-LA1500,C-sa1500,and CSLR1500)by enhanced-depth imaging optical coherence tomography(EDi-OCT)at baseline,6th and 18th weeks of the exogenous testosterone ***:The mean SFCT values of the androgen deficient groups and healthy controls were 307.7±27.0 and 303.2±37.2μm(P=0.8).However,CVi,C-sa,CSLR,CVi1500,C-LA1500,and CSLR1500 were significantly different between the groups(all Pisit after exogenous testosterone treatment,SFCT,CVi,C-LA,and C-sa were significantly decreased,and these parameters returned to baseline levels at the 18th-week visit(all P>0.05).However,CVi1500 and LA1500 significantly increased at the end of the follow-up period(PiON:CVi is lower in androgen-deficient patients than in healthy *** alterations in the choroid during the testosterone peak are transient in the treatment of patients with androgen ***,the increase in CVi within the central 1500μm of the macula persists even after 4mo.

关键词： testosterone androgen deficiency choroid vascularity index

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