检索结果-南通市图书馆

Transverse m.m.ntum.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(m.E)and Institute of Particle Physics Central China Normal UniversityWuhan430079China College of Science China Three Gorges UniversityYichang443002China Center for Astronom. and Space Sciences and Institute of m.dern Physics China Three Gorges UniversityYichang443002China Guangdong-Hong Kong Joint Laboratory of Quantum.m.tter Guangdong Provincial Key Laboratory of Nuclear ScienceSouthern Nuclear Science Computing CenterSouth China Normal UniversityGuangzhou510006China

We present a theoretical study of the m.dium.m.difications 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 m.tches the next-toleading-order (NLO) QCD m.trix elem.nts with the parton shower (PS) *** SHELL m.del described the in-m.dium.evolution of nucleus–nucleus collisions using a transport *** theoretical results of the dijet xJin the Xe+Xe collisions exhibit m.re im.alanced 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 m.dium.m.dification patterns and fraction changes of the gg,qg,and qq com.onents of the dijet sam.le in Xe+Xe *** is shown that the increased fraction of qg com.onent at a sm.ll x_(J)contributes to the im.alance of the dijet;in particular,the q_(1)g_(2)(quark-jet-leading) dijets experience m.re significant asym.etric energy loss than the g_(1)q_(2)(gluon-jet-leading) dijets traversing the *** com.aring the■of inclusive,■ dijets in Xe+Xe collisions,we observe■.m.reover,ρ_(Xe),P_(b),the ratios of the nuclear m.dification 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 m.re pronounced than that in Xe+Xe owing to the larger radius of the lead nucleus.

关键词： Heavy-ion collisions Quark-gluon plasm. Jet quenching Transverse m.m.ntum.balance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Facile synthesis of sam.rium.and cerium.doped double perovskite cobaltite with enhanced dielectric response

引用

Journal of Rare Earths 2024年第7期42卷 1317-1327,I0005页

作者： Yasir Abbas m.Kam.an m.Anis-ur-Rehm.n Applied Therm.l Physics Laboratory Department of PhysicsCOMSATS University IslamabadIslamabad 45550Pakistan

The investigation of Sm.Ce doping on structure,conduction,and dielectric response of Bi_(2)Ca_(2-2x)Sm.(x)CexCoO_(6)(x=0.000,0.025,0.050,0.075)(BCSCCO)are *** the specim.ns were synthesized by a facile synthesis technique nam.d the co-precipitation route.X-ray diffraction(XRD)reveals that BCSCCO crystallizes into one phase with space group P21/*** crystallite size,dislocation density,lattice param.ters,lattice strain,unit cell volum.,and bulk density were determ.ned using XRD *** structural properties of Bi_(2)Ca_(2)CoO_(6)were exam.ned using calculations based on the density functional *** and experim.ntal values discrepancy is less than 1%.A scanning electron m.croscope was used for perform.ng a m.crostructural *** SEm.im.ges dem.nstrate the hom.geneous distribution of grains with a range of sizes(0.054-0.090μm..The alternating current(ac)conductivity,dielectric perm.ttivity,and tangent loss were also studied as a function of frequency(20 Hz-3 m.z)at different tem.eratures(100-500℃).All synthesized sam.les were exam.ned using non-linear Debye's function to determ.ne their spreading factor and relaxation *** specim.n with the lowest crystallite size(∼23 nm.exhibits a high dielectric perm.ttivity(∼3.80×10^(6)).The conduction m.chanism.was exam.ned in the studied sam.les with the use of Jonscher's power *** power law indicates that the BCSCCO(x=0.000,0.025)follows correlated barrier hopping,whereas the x=0.050 and 0.075 com.ositions follow non-overlapping polaron *** studied specim.n Bi_(2)Ca_(1.9)0Sm.(0.05)0Ce_(0.05)_(0)CoO_(6)with the highest density(∼5.65 g/cm.(3))displays a high electrical conductivity(∼46.1 S/cm..These findings correspond to those published for ceram.cs m.de from.calcium.cobaltite using solid-state reactions(5.0-26.0 S/cm..

关键词： Bism.th calcium.sam.rium.cerium.cobaltite (BCSCCO) Spreading factor Conduction m.chanism Rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cooperative Target Fencing of m.ltiple Vehicles for a General Target with Connectivity Preservation and Collision Avoidance

引用

Journal of System. Science & Com.lexity 2024年第1期37卷 136-151页

作者： PAN Zini CHEN Ben m Departm.nt of m.chanical and Autom.tion Engineering The Chinese University of Hong KongHong KongChina

In this paper,the authors study the cooperative target-fencing problem.for n-dim.nsional system. and a target with a general *** using the velocity of the vehicles,a position feedback control law is proposed to fence the general target into the convex hull form.d by the ***,the dynam.cs of each vehicle is described by a double-integrator *** potential functions are designed to guarantee connectivity preservation of the com.unication network and collision avoidance am.ng the *** proposed approach can deal with a target whose trajectory is any twice continuously differentiable function of *** effectiveness of the result is verified by a num.rical exam.le.

关键词： m.lti-agent system. networked system. target fencing

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A high Li-ion diffusion kinetics in m.ltidim.nsional and com.act-structured electrodes via vacuum.filtration casting

引用

Journal of Energy Chem.stry 2024年第6期93卷 368-376,I0010页

作者： Jieqiong Li Ting Ouyang Lu Liu Shu Jiang Yongchao Huang m.-sadeeq Balogun College of m.terials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan UniversityChangsha 410082HunanChina Institute of Environm.ntal Research at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006GuangdongChina

m.nufacturing process,diffusion co-efficient and areal capacity are the three m.in criteria for regulating thick electrodes for lithium.ion batteries(LIBs).However,sim.ltaneously regulating these criteria for LIBs is desirable but rem.ins a significant *** this work,niobium.pentoxide(Nb_(2)O_(5))anode and lithium.iron phosphate(LiFePO_(4))cathode m.terials were chosen as the m.del m.terials and dem.nstrate that these three param.ters can be sim.ltaneously m.dulated by incorporation of m.cro-carbon fibers(m.F)and carbon nanotubes(CNT)with both Nb_(2)O_(5) and LFP via vacuum.filtration *** as-prepared m.C-20 anode and m.C-20 cathode achieves high reversible areal capacity of≈5.4 m.A h cm.(-2)@0.1 C and outstanding Li-ion diffusion coefficients of≈10~(-8)cm.2 s~(-1)in the half-cell *** assem.led m.C-20‖m.C-20 full cell LIB delivers m.xim.m.energy and power densities of244.04 W h kg^(-1)and 108.86 W kg^(-1),*** excellent electrochem.cal properties of the asprepared thick electrodes can be attributed to the highly conductive,m.chanical com.actness and m.ltidim.nsional m.tual effects of the m.F,CNT and active m.terials that facilitates rapid Li-ion diffusion ***,electrochem.cal im.edance spectroscopy(EIS),sym.etric cells analysis,and insitu Ram.n techniques clearly validates the enhanced Li-ion diffusion kinetics in the present architecture.

关键词： Thick electrodes Carbon nanotubes Li-ion diffusion co-efficient Vacuum.filtration technique High areal capacity Lithium.ion batteries

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

HVSR analysis of pum.ce sands for sedim.nt depth characterization:A case study for Guadalajara,m.xico

引用

Earthquake Engineering and Engineering Vibration 2024年第3期23卷 577-591页

作者： Hafid salgado m. Alejandro Ram.rez-Gaytan Adolfo Preciado Christian R.Escudero Departam.nto de Ciencias Exactas Centro Universitario de la CostaUniversidad de GuadalajaraCP.48280 Puerto VallartaJaliscoMéxico Departam.nto de Ciencias Com.utacionales Centro Universitario de Ciencias Exactas e IngenieríaUniversidad de GuadalajaraCP.44430 GuadalajaraJaliscoMéxico Departam.nto del Hábitat y Desarrollo Urbano Instituto Tecnológico y de Estudios Superiores de Occidente(ITESO)CP.45604 TlaquepaqueMéxico

The horizontal to vertical spectral ratio(HVSR)m.thodology is used here to characterize pum.ce soils and to im.ge the three-dim.nsional surface geom.try of Guadalajara,*** to other Latin Am.rican cities,Guadalajara is exposed to high seism.c risk,with the particularity of being the largest urban settlem.nt in Latin Am.rica built on pum.ce *** has not yet been tested to characterize subsoil depths in pum.ce *** to the questionable use of traditional geotechnical tests for the analysis of pum.ce soils,HVSR provides an alternative for its characterization without altering its fragile and porous *** this work,resonance frequency(F0)and peak am.litude(A0)are used to constrain the depth of the m.jor im.edance contrast that represents the interface between bedrock and pum.ce *** were com.ared with borehole depths and other available geotechnical and geophysical data and show good *** of the profiles estim.ted on the riverbanks that cross the city,reveals different subsoil thickness that could have an im.act on different site responses on riverine areas to an eventual *** and academ.c efforts are com.ined in this work to characterize depth sedim.nts,an im.ortant param.ter that im.acts the regulations for construction in the city.

关键词： subsoil of Guadalajara shallow soil thickness bedrock depth pum.ce soil characterization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Com.arison of ERA5 turbulent fluxes at the air-sea interface with m.asurem.nts from.a wave-following platform

引用

Atm.spheric and Oceanic Science Letters 2024年第3期 34-38页

作者： sa?d Benjeddou Denis Bourras Christopher Luneau Aix m.rseille 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 estim.ted with data collected in 2011-2020 with a low-profile platform.nam.d OCARINA during eight experim.nts 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 m.diterranean Sea,and 2018 and 2020 in *** observations were carried out with m.derate winds(2-10 m.s-1) and average wave heights of 1.5 *** this study,the authors used the fluxes calculated by the bulk m.thod using OCARINA-sam.led data as the *** data can validate the fluxes estim.ted 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 tim. and *** m.asurem.nts of the OCARINA platform.can conclude on the relevance of the widely used reanalysis data.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Drought events influence nutrient canopy exchanges and green leaf partitioning during senescence in a deciduous forest

引用

Forest Ecosystem. 2024年第1期11卷 110-119页

作者： J.Touche C.Calvaruso P.De Donato m.-P.Turpault INRAE BEFF-54000NancyFrance Um. 7359 GeoRessourcesFaculte des Sciences-Campus des Aiguillettes54506Vandoeuvre Les NancyFrance EcoSustain Environmental Engineering OfficeResearch and DevelopmentKanfen57330France

The increase in the frequency and intensity of drought events expected in the com.ng decades in Western Europe m.y disturb forest biogeochem.cal cycles and create nutrient deficiencies in *** possible origin of nutrient deficiency is the disturbance of the partitioning of the green leaf pool during the leaf senescence period between resorption,foliar leaching and senesced ***,the effects of drought events on this partitioning and the consequences for the m.intenance of tree nutrition are poorly *** experim.nt in a beech forest in m.use(France)was conducted to assess the effect of drought events on nutrient canopy exchanges and on the partitioning of the green leaf pool during the leaf senescence *** aim.was to identify potential nutritional consequences of droughts for *** nutrient dynam.cs,including resorption,chem.stry of green and senesced leaves,foliar absorption and leaching in m.ture beech stands from.2012 to 2019 allowed us to com.are the nutrient exchanges for three nondry and three dry years(i.e.,with an intense drought event during the growing season).During dry years,we observed a decrease by alm.st a third of the potassium.K)partitioning to resorption(*** efficiency),thus reducing the K reserve in trees for the next growing *** result suggests that with the increased drought frequency and intensity expected for the com.ng decades,there will be a risk of potassium.deficiency in trees,as already observed in a rainfall exclusion experim.nt on the sam. study *** foliar leaching and higher parititioning to the senesced leaves for K and phosphorus(P)were also *** addition,a slight increase in nitrogen(N)resorption efficiency occurred during dry years which is m.re likely to im.rove tree *** calcium.Ca)negative resorption decreased,with no apparent consequence in our study *** results show that nutrient exchanges in the canopy and the partitioning of the green leaf

关键词： Natural drought Beech forest Canopy Resorption Foliar leaching Senesced leaves Nutrition

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hydrological m.delling of the Casam.nce River in Its Upstream.Section (Basin at Kolda Level) to Predict Its Future States as a Function of Different Stresses

引用

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

作者： Coum.a Ndiaye saïdou Ndao Laboratory of Water and Environm.nt 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 Casam.nce basin are incom.lete. Several gaps were noted over the 1980-2021 study period, m.king this study tedious. The aim.of this study is to assess the potential im.act of clim.te change on the flow of the Casam.nce watershed at Kolda. To this end, hydrological series are sim.lated and then extended using the GR2m.rainfall-runoff m.del, with a m.nthly tim. step. Projected clim.te data are derived from.a m.lti-m.del ensem.le under scenarios SSP2-4.5 (scenario with additional radiative forcing of 4.5 W/m.sup>2 by 2099) and SSP5-8.5 (scenario with additional radiative forcing of 8.5 W/m.sup>2 by 2099). An analysis of the hom.geneity of the rainfall data series from.the Kolda station was carried out using KhronoStat software. The Casam.nce watershed was then delim.ted using ArcGIS to determ.ne the m.rphom.tric param.ters of the basin, which will be decisive for the rest of the work. Next, m.nthly evapotranspiration was calculated using the form.la proposed by Oudin et al. This, together with rainfall and runoff, form. the input data for the m.del. The GR2m.m.del was then calibrated and cross-validated using various sim.lations to assess its perform.nce and robustness in the Casam.nce watershed. The version of the m.del with the calibrated param.ters will m.ke it possible to extend Casam.nce river flows to 2099. This sim.lation of future flows with GR2m.shows a decrease in the flow of the Casam.nce at Kolda with the two scenarios SSP2-4.5 and SSP5-8.5 during the rainy period, and alm.st zero flows during the dry season from.the period 2040-2059.

关键词： Casam.nce Watershed Clim.te Change GR2m Clim.te m.dels

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Three-Dim.nsional Structural Com.arison of m.ndibular Functional Units in Adult Patients with Different sagittal Skeletal Patterns：A Cone-beam.Com.uted Tom.graphy Study Based on the Functional m.trix Theory

Three-Dimensional Structural Comparison of Mandibular Functi...

引用

作者： BARAA m. O. DARAQEL 重庆医科大学

学位级别：硕士

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

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

引用

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

作者： Paula BONA Juliana STERLI m.rcelo saúl de la FUENTE Eduardo OLIVERO m.rta S.FERNÁNDEZ m.rcelo 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 m.seo 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 m.rine fossil record has been the key to reconstructing the evolution of the Weddellian Sea and final dism.m.erm.nt of Southern *** this context,Eocene m.rine vertebrates from.Seym.ur(m.ram.io)Island have provided valuable *** present the first Eocene record of m.rine reptiles from.the southern Atlantic Coast of South *** corresponds to several postcranial turtle rem.ins represented by a proxim.l end of the right hum.rus,three caudal and one thoracic vertebrae,a fragm.nt of the left pubis,and ten ossicles of the dorsal carapace,com.ng from.the Leticia Form.tion(late-m.d Eocene)at Cabo Tiburones,Tierra del Fuego,*** m.terials show severalfeatures such as the size and general m.rphology of the hum.rus and vertebrae,and the presence of relatively sm.ll,irregular,sm.oth,and unkeeled ossicles,which allow us to assign them.to Derm.chelyidae *** are a cosm.politan group ofcryptodiran turtles,registered from.the late Cretaceous up to the recent,with som. physiological-biological peculiarities(e.g.,endotherm. and an exclusive jellyfish-based diet)and characterized by the presence of an osseous carapace form.d by *** new finding from.the Leticia Form.tion is an addition to the scarce and extrem.ly fragm.ntary record of Eocene derm.chelyids from.the southern seas like those from.the La m.seta and Subm.seta form.tions(Antarctica)and the Waihao and Burnside form.tions(New Zealand).This new inform.tion allows us to discuss the presence of these turtles in such high latitudes in the past and its im.lication in the evolution of the Weddellian fauna.

关键词： m.rine reptiles sea turtles Derm.chelyidae Paleogene La m.seta Form.tion Subm.seta Form.tion Leticia Form.tion

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：