检索结果-南通市图书馆

VEPP-2000正负电子对撞机上CMD-3物理结果综述（英文）

在线全文

学校读者我要写书评

暂无评论

中国科学技术大学学报 2016年第4期46卷 259-271页

作者： FEDOTOVICH G.V. AMIRKHANOV A.N. ANISENKOV A.V. AUlCHENKO V.M. bANZAROV V.S. bASHTOVOY N.S. bONDAR A.E. bRAGIN A.V. EIDElMAN S.I. EPIFANOV D.A. epshteyn l.b. EROFEEV A.l. GAYAZOV S.E. GREbENUK A.A. GRIbANOV S.S. GRIGORIEV D.N. IGNATOV F.V. IVANOV V.l. KARPOV S.V. KAZANIN V.F. KORObOV A.A. KOVAlENKO O.A. KOZYREV A.N. KOZYREV E.A. KROKOVNY P.P. KUZMENKO A.E. KUZMIN A.S. lOGASHENKO I.b. lUKIN P.A. MIKHAIlOV K.Yu. OKHAPKINV.S. PESTOVYu.N. POPOV A.S. RAZUVAEV G.P. RUbAN A.A. RYSKUlOV N.M. RYZHENENKOV A.E. SHEbAlIN V.E. SHEMYAKIN D.N. SHWARTZ b.A. SIbIDANOV A.l. SHATUNOV Yu.M. SOlODOV E.P. TITOV V.M. TAlYSHEV A.A. VORObIOV A.I. YUDIN Yu.V. 布德克尔核物理研究所新西伯利亚州立大学新西伯利亚州立理工大学悉尼大学物理学院福基纳高能物理系

2010年12月VEPP-2000正负电子对撞机上的CMD-3探测器开始运行.在质心系能量区间0.32~2GeV范围内,已经获取了积分亮度约为60pb-1的数据.目前已经得到多种强子末态截面的初步结果,尤其是e^+e^-→π^+π^-,π^+π^-π~0,K_lK_S,K^+K^-,ηγ... 详细信息

2010年12月VEPP-2000正负电子对撞机上的CMD-3探测器开始运行.在质心系能量区间0.32~2GeV范围内,已经获取了积分亮度约为60pb-1的数据.目前已经得到多种强子末态截面的初步结果,尤其是e^+e^-→π^+π^-,π^+π^-π~0,K_lK_S,K^+K^-,ηγ,3(π^+π^-),2(π^+π^-π~0),K^+K^-π^+π^-,K^+K^-η,K^+K^-π0,ηπ^+π^-,ωπ^+π^-和ω→π~0e^+e^-.为正确描述角分布和不变质量分布及截面分布,多强子末态过程必须考虑其中间共振态.

关键词：强子信号/本底分离截面

用CMD-3谱仪研究VEPP-2000对撞机上的e^+e^-→K^+K^-η过程（英文）

在线全文

学校读者我要写书评

暂无评论

中国科学技术大学学报 2016年第6期46卷 502-506页

作者： IVANOV V.l. AMIRKHANOV A.N. ANISENKOV A.V. AUlCHENKO V.M. bANZAROV V.S. bASHTOVOY N.S. bERKAEV D.E. bONDAR A.E. bRAGIN A.V. EIDElMAN S.I. EPIFANOV D.A. epshteyn l.b. EROFEEV A.l. FEDOTOVICH G.V. GAYAZOV S.E. GREbENUK A.A. GRIbANOV S.S. GRIGORIEV D.N. IGNATOV F.V. KARPOV S.V. KAZANIN V.F. KORObOV A.A. KOVAlENKO O.A. KOZYREV A.N. KOZYREV E.A. KROKOVNY P.P. KUZMENKO A.E. KUZMIN A.S. lOGASHENKO I.b. lUKIN P.A. MIKHAIlOV K.YU. OKHAPKIN V.S. PESTOVY U.N. POPOV A.S. RAZUVAEV G.P. RUbAN A.A. RYSKUlOV N.M. RYZHENENKOV A.E. SHEbAlIN V.E. SHEMYAKIN D.N. SHWARTZ b.A. SIbIDANOV A.l. SHATUNOVY U.M. SOlODOV E.P. TITOV V.M. TAlYSHEV A.A. VORObIOV A.I. YUDINY U.V. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学国立新西伯利亚理工大学悉尼大学物理学院高能物理系

报道了用CMD-3在2011-2012年收集的积分亮度为22 pb-1的研究结果.在CMD-3当前的统计量下,只能被确定Ф(1020)η中间共振态.在1.59-2.0 Ge V能区的30个能量点测量了e^+e^-→Ф(1020)η.分析中,将η介子当做反冲粒子,穷尽了η衰变的所有模... 详细信息

报道了用CMD-3在2011-2012年收集的积分亮度为22 pb-1的研究结果.在CMD-3当前的统计量下,只能被确定Ф(1020)η中间共振态.在1.59-2.0 Ge V能区的30个能量点测量了e^+e^-→Ф(1020)η.分析中,将η介子当做反冲粒子,穷尽了η衰变的所有模式,选出的事例总数为1454±48.测量的截面近似为Ф(1680)和非共振振幅按照矢量介子主导模型的叠加,并得到了Ф(1680)介子共振参数的初步结果.

关键词：强子信号/本地分离截面

VEPP-2000 e^+e^-对撞机上用CMD-3探测器测量e^+e^-→ηπ^+π^-和e^+e^-→ωπ^+π^-的截面（英文）

在线全文

学校读者我要写书评

暂无评论

中国科学技术大学学报 2016年第6期46卷 514-522页

作者： POPOV A.S. AKHMETSHIN R.R. AMIRKHANOV A.N. ANISENKOV A.V. AUlCHENKO V.M. bANZAROV V.S. bASHTOVOY N.S. bERKAEV D.E. bONDAR A.E. bRAGIN A.V. EIDElMAN D.E. EPIFANOV D.A. epshteyn l.b. EROFEEV A.l. FEDOTOVICH G.V. GAYAZOV S.E. GREbENUK A.A. GRIbANOV S.S. GRIGORIEV D.N. GROMOV E.M. IGNATIN F.V. IVANOV V.l. KARPOV S.V. KASAEV A.S. KORPOTIN A.N. KOOP I.A. KOVAlENKO O.A. KAZANIN V.F. KOZYREV A.N. KOZYREV E.A. KROKOVNY P.P. KUZMENKO A.E. KUZMIN A.S. lOGASHENKO I.b. lIKIN P.A. MIKHAIlOV K.YU. OKHAPKIN V.S. OTbOEV A.V. PESTOVY U.N. PIVOVAROV S.G. RAZUVAEV G.P. ROMANOV A.l. RUbAN A.A. RYSKUlOV N.M. RYZHENENKOV A.E. SHEbAlIN V.E. SHEMYAKIN D.N. SHWARTZ b.A. SHWARTZ D.b. SIbIDANlOV A.l. SHATUNOV P.YU. SHATUNOVY U.M. SOlODOV E.P. TITOV V.M. TAlYSHEV A.A. VORObIOV A.I.. YUDINY U.V. ZHARINOVY U.M. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学东京大学物理系国立新西伯利亚理工大学悉尼大学物理学院高能物理系

在VEPP^-2000e^+e^-对撞机上,CMD^-3探测器研究了e^+e^-→ηπ^+π^-→γγπ^+π^-,e^+e^-→ηπ^+π^-→π0π^+π^-π^+π^-以及e^+e^-→ωπ^+π^-→π0π^+π^-π^+π^-等过程.分析使用的是2011和2012年在1.2^-2.0Ge V能区收集的相应积分亮度为3×104nb^-1的数据.用η→γγ道测量了e^+e^-→ηπ^+π^-的波恩截面,结果与相关的实验结论相吻合;还用末态η→π^+π^-π0和ω→π^+π^-π0分别得到了e^+e^-→ηπ^+π^-和e^+e^-→ωπ^+π^-波恩截面的初步结果;e^+e^-→ηπ^+π^-波恩截面的数值还被用于确定τ^-→ηπ^-π0ντ的衰变分支比.

关键词：截面 ηπ+π- ωπ+π- 强子 τ

VEPP-2000 e^+e^-对撞机上用CMD-3谱仪研究1004-1060 MeV能区的e^+e^-→K■过程（英文）

在线全文

学校读者我要写书评

暂无评论

中国科学技术大学学报 2016年第6期46卷 507-513页

作者： KOZYREV E.A. AMIRKHANOV A.N. ANISENKOV A.V. M.AUlCHENKO V. bANZAROV V.S. bASHTOVOY N.S. bERKAEV D.E. bONDAR A.E. bRAGIN A.V. EIDElMAN S.I. A.EPIFANOV D. epshteyn l.b. EROFEEV A.l. FEDOTOVICH G.V. GAYAZOV S.E. GREbENUK A.A. GRIbANOV S.S. GRIGORIEV D.N. IGNATOV F.V. IVANOV V.l. KARPOV S.V. KASAEV A.S. KAZANIN V.F. IRPOTIN A.N. KORObOV A.A. KOVAlENKO O.A. KOZYREV A.N. KOOP I.A. KROKOVNY P.P. KUZMENKO A.E. KUZMIN A.S. lOGASHENKO I.b. lUKIN P.A. MIKHAIlOV K.YU. OKHAPKIN V.S. OTbOEV A.V. PESTOVY U.N POPOV A.S. RAZUVAEV G.P. RUbAN A.A. RYSKUlOV N.M. RYZHENENKOV A.E. SENCHENKO A.I. SHEbAlIN V.E. SHEMYAKIN V.E. SHWARTZ A.S. SHWARTZ D.b. SIbIDANOV A.l. SHATUNOV P.YU. SHATUNOVY U.M. SOlODOV E.P. TITOV V.M. TAlYSHEV A.A. VORObIOV A.I. YUDINY U.V. 俄罗斯布德克尔核物理研究所国立新西伯利亚大学国立新西伯利亚理工大学悉尼大学物理学院高能物理系

在质心能量1004-1060Me V之间的25个能量点测量了e^+e^-→K_S^0+K_l^0和e^+e^-→KK截面,系统误差大约为2%-3%.分析是基于VEPP-2000e^+e^-对撞机上CMD-3收集的积分亮度为5.5 pb-1的实验数据.测量的截面可近似看作Ф,ω,ρ类似的振幅及其... 详细信息

在质心能量1004-1060Me V之间的25个能量点测量了e^+e^-→K_S^0+K_l^0和e^+e^-→KK截面,系统误差大约为2%-3%.分析是基于VEPP-2000e^+e^-对撞机上CMD-3收集的积分亮度为5.5 pb-1的实验数据.测量的截面可近似看作Ф,ω,ρ类似的振幅及其激发态按照矢量介子主导模型的叠加,得到了Ф(1020)介子的共振参数.

关键词：强子正负电子对撞机介子形状因子

Nonlinear vibration of an elastically restrained tapered beam

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2012年第10期55卷 1925-1930页

作者： KARIMPOUR S. GANJI S.S. bARARI A. IbSEN l.b. DOMAIRRY G. Department of Civil and Mechanical Engineering Babol University of TechnologyP.O.Box 484BabolIran Young Researchers Club Science and Research BranchIslamic Azad UniversityTehranIran Department of Civil Engineering Aalborg UniversitySohng rdsholmsvej 57DK-9000 AalborgAalborgDenmark

This paper presents the analytical simulation of an elastically restrained tapered cantilever beam using the energy balance method(EbM) and the iteration perturbation method(IPM).To assess the accuracy of solutions,we compare the results with the harmonic balance method(HbM).The obtained results from EbM and IPM are in excellent agreement with HbM *** results show that both methods can be easily extended to other nonlinear oscillations and it can be predicted that both methods can be found widely applicable in engineering and physics.

关键词： energy balance method (EbM) iteration perturbation method (IPM) nonlinear oscillation

Effect of two-step cooling process on mechanical properties of TRIP steel with high performance

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2018年第4期25卷 426-432页

作者： M.l. li H. Jiang Y.l. He l.b. Chen G.T. Zhang H. Wang X.G. lu l. li School of Materials Science and Engineering Shanghai University Shanghai 200072 China State Key l.b.ratory of Advanced Special Steel Shanghai University Shanghai 200072 China Pangang Group Research Institute Panzhihua 617000 Sichuan China

A novel two-step cooling experiment was established to simulate the slow cooling process of continuous annealing production line for transformation-induced plasticity （TRIP） steel. The microstructures and mechanical properties of TRIP steel soaked at 700℃ for different time were investigated by tensile test, scanning electron microscopy, X-ray diffraction, and thermodynamic and kinetic calculation. It is shown that the steel soaked for 15 s exhibits the optimal product of strength and elongation （PSE 〉 30,000 MPa%） due to the transformation of austenite to proeutectoid ferrite, which delays the bainite transformation and improves the stability of retained austenite. In addition, the mechanical properties of TRIP steel soaked over 30 s are much lower, resulting from the precipitation of cementite, which decreases the stability of retained austenite and weakens the TRIP effect.

关键词： Transformation induced plasticity steel Two-step cooling Microstructure Mechanical property

INFlUENCE OF PROCESSING ON SHAPE MEMORY EFFECT OF Fe-Mn-Si-Ni-C-RE SHAPE MEMORY AllOY

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

Acta Metallurgica Sinica(English letters) 2003年第5期16卷 385-394页

作者： N.C. Si, Z.H. Jia and l.b. QiSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China School of Materials Science and Engineering Jiangsu University Zhenjiang 212013 China

Effect of carbon, compound RE, quenching temperature, pre-strain and recovery temperature on shape memory effect (SME) of Fe-Mn-Si-Ni-C-RE shape memory alloy was studied by bent measurement, thermal cycle training, SEM etc. It was shown that the grains of alloys addition with compound RE became finer and SME increased evidently. SME of the alloy was weakening gradually as carbon content increased under small strain (3%). but in the condition of large strain (more than 6%), SME of the alloy whose carbon content range from 0.1% to 0.12% showed small decreasing range, especially of alloy with the addition of compound RE. Results were also indicated that SME was improved by increasing quenching temperature (>1000℃). The amount of thermal induced martensite increased and the relative shape recovery ratio could be increased to more than 40% after 3-4 times thermal training. The relative shape recovery ratio decreased evidently depending on rising of pre-strain. Furthermore, because speed of martensite transition was extremely great under higher tempering temperature (more than 450℃, ε → γ transition completed in 10s meanwhile the relative shape recovery ratio of the alloy increased rapidly.

关键词： Fe-Mn-Si-Ni-C-RE shape memory alloy quenching temperature pre-strain recovery temperature shape memory effect

Point process microstructural model of metallic thin films with implications for coarsening

在线全文

学校读者我要写书评

暂无评论

npj Computational Materials 2023年第1期9卷 2074-2082页

作者： J.M.Rickman K.barmak Y.epshteyn C.liu Department of Materials Science and Engineering Lehigh UniversityBethlehemPA 18015USA Department of Physics Lehigh UniversityBethlehemPA 18015USA Department of Applied Physics and Applied Mathematics Columbia UniversityNew YorkNY 10027USA Department of Mathematics The University of UtahSalt Lake CityUT 84112USA Department of Applied Mathematics Illinois Institute of TechnologyChicagoIL 60616USA

We develop a thin-film microstructural model that represents structural markers(i.e.,triple junctions in the two-dimensional projections of the structure of films with columnar grains)in terms of a stochastic,marked point process and the microstructure itself in terms of a grain-boundary *** advantage of this representation is that it is conveniently applicable to the characterization of microstructures obtained from crystal orientation mapping,leading to a picture of an ensemble of interacting triple junctions,while providing results that inform grain-growth models with experimental *** specifically,calculated quantities such as pair,partial pair and mark correlation functions,along with the microstructural mutual information(entropy),highlight effective triple junction interactions that dictate microstructural *** validate this approach,we characterize microstructures from Al thin films via crystal orientation mapping and formulate an approach,akin to classical density functional theory,to describe grain growth that embodies triple-junction interactions.

关键词： grain microstructure process

Use of regression trees to predict overweight trucks from historical weigh-in-motion data

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

Journal of Traffic and Transportation Engineering(English Edition) 2020年第6期7卷 843-859页

作者： Mariana bosso Kamilla l.Vasconcelos linda lee Ho liedi l.b.bernucci Department of Transportation Engineering University of Sao Paulo(USP)Sao PauloBrazil Department of Production Engineering University of Sao Paulo(USP)Sao PauloBrazil

The traffic of overloaded trucks is a critical problem in *** affects pavement performance life,reduces the service life of bridges,and has a negative impact on road safety,average speed and level of *** are several practices to prevent the truck overloading issue,i.e.,enforcement activities to verify the truck’s compliance with the legal weight *** paper investigates the development of a method that uses avail.b.e weigh-in-motion(WIM)data to identify overloaded truck weight and travel *** proposed approach is based on regression trees method,a simple and easily understandable analytic tool used to build prediction models from a large set of *** overall analysis of the overloaded truck regression tree model shows that the most important variable to classify and predict overloading is the truck *** the axle overloading,the most significant variable is the time of the day(most of the overloaded trucks travel at late night or early morning).The regression tree results can be used to optimize the efficiency of administration activities by planning truck enforcement operations based on the more critical ***,the results improve the knowledge about the load characteristics of trucks,which can lead to more effective pavement management systems and more assertive pavement structure designs.

关键词： Regression piecewise Overloaded trucks Travel patterns Axle loading RPART package Enforcement activities