检索结果-南通市图书馆

Cosmic—Ray Deficit from the Directions of the moon and the Sun Detected with the Tibet Air Shower Array

在线全文

学校读者我要写书评

暂无评论

西藏大学学报(社会科学版) 1993年第4期8卷 76-85页

作者： M.Amenomori Z.Cao L.K.Ding Z.y.Feng Hibino N.Hotta Q.Huang A.x.Huo H.y.Jia G.z.Jiang S.Q.Jiao F.Kajino K.Kasahara Labaciren D.M.Mei L.Meng x.R.Meng Mimaciren K.Mizutani J.Mu H.Nanjo M.Nishizawa Nusang A.Oguro M.Ohnishi I.Ohta To.Saito M.Sakata Z.Z.shi M.Shibata T.Shirai H.Sugimoto x.x.Sun A.Tai K.Taira y.H.Tan N.Tateyama S.Torii H.Wang C.Z.Wen y.yamamoto x.y.yao G.C.yu P.yuan T.yuda J.G.Zeng C.S.Zhang H.M.Zhang L.Zhang Zhasang Zhaxiciren W.D.Zhou Department of Physics Hirosaki UniversityHirosakiJapan Institute of High Energy Physics Academia SinicaBeijingChina Departmetn of Physics Sorth West Jiaotong UniversityChengduChina Institute for Cosmic Ray Research University of TokyoTanashiJapan Faculty of Education Utsunomiya UniversityUtsunomiyaJapan Department of Physics Konan UniversityKobeJapan Faculty of Engineering Kanagawa UniversityYokohanaJapan Department of Mathematics and Physics Tibet UniversityLhasaChina Department of Physics saitama UniversityUrawaJapan Department of Physics Yunnan UniversityKunmingChina Faculty of Education Yokohama National UniversityYokohanaJapan Shonan Institute of Technology FujisawaJapan

Data from the Tibet air shower array were used to examine the cosmic ray shadows of the Moon and the Sun at energies around *** shadowing effect was clearly observed at the 5.8level for the Moon,while the shadow of the Sun was found in the direction away from the sun by 0.86°tothe west and 0.43°to the *** effect of the geomagnetic field has also been observed in the shadow of cosmic rays by the *** observed deflection of the sun’s shadow is briefly discussed in connection with the effect of the magnetic fields between the sun and the *** is the first observation of the effects of such magnetic fields on the cosmic ray *** maximum-likelihood analysis of the Moon data set shows that the angular resolutions of the array for showers with its mode energies 7TeVand 35TeV are 0.87°-0.13°+0.10°and 0.54°-0.08°+0.11°,respectively.

关键词：空气簇射宇宙射线阴影磁场 Gamma射线

Search for Steady Emission of 10—TeV Gamma Rays from the Crab Nebula,Cygnus x—3,and Hercules x—1 Using the Tibet Air Shower Array

在线全文

学校读者我要写书评

暂无评论

西藏大学学报(社会科学版) 1993年第4期8卷 71-75页

作者： M.Amenomori Z.Cao.L.K.Ding Z.y.Feng K.Hibino N.Hotta Q.Huang A.x.Huo H.y.Jia G.Z.Jiang S.Q.Jiao F.Kajino K.Kasahara Labaciren D.M.Mei L.Meng x.R.Meng Mimaeiren K.Mizutani J.Mu H.Nanjo M.Nishizawa Nusang A.Oguro M.Ohnishi I.Ohta J.R.Ren To.saito M.Sakata Z.Z.Shi M.Shibata T.shirai H.sugimoto x.x.Sun A.Tai K.Taira y.H.Tan N.Tateyama S.Torii H.Wang C.Z.Wen y.yamamoto x.y.yao G.C.yu P.yuan T.yuda J.G.Zeng C.S.Zhang H.M.Zhang L.Zhang Zhasang Zhaxlclren W.D.Zhou Department of Physics Hirosaki UniuersityHirosakiJapan Institute of High Energy Physics Academia SinicaBeijingChina Department of Physics South West Jiaotong UniuersityChengduChina Institute for Cosmic Ray Research Uniuersity of TokyoTanashiJapan Faculty of Education Utsunomiya UniuersityUtsunomiyaJapan Departmem of Physics Konan UniuersityDepartmem of PhysicsKonan UniuersityKobeJapan Faculty of Engireering Kanagawa UniversityYokohamaJapan Department of Mathematics and Physics Tibet UniuersityLhasaChina Department of Physics Saitama UniuersityUrawaJapan Department of Physics Yunnan UniuersityKunmingChina Faculty of Education Yokohama National UniuersityYokohamaJapan Shonan Institute of Technology FujisawaJapan

寻找到高能和超高能的Gamma射线点源,在宇宙射线源方面有着极为重要的意义,本文就西藏羊八井观测到的空气簇射阵列及共它资料,对寻找稳定的10-TeV Gamma射线进行了分析论述。

关键词：西藏空气簇射 Gamma射线点源大气厚度 10TeV

Highly conductive and stable iodine doped argyrodite electrolyte for all-solid-state lithium batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 50-58页

作者： Gaozhan Liu Jing Zhang Jing yang Jinghui Chen xingyue xiao xiayin yao Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Lithium argyrodites with high ionic conductivity and low cost are considered as one of the most prospective solid electrolytes for all-solid-state lithium ***,the poor chemical stability and compatibility with lithium metal limit their ***,Li5.4PS4.4Cl1.4I0.2solid electrolyte with high ionic conductivity of 11.49 m S cm-1and improved chemical stability is synthesized by iodine *** ultra-thin Li5.4PS4.4Cl1.4I0.2membrane with thickness of 10μm can be obtained by wet coating process,exhibiting a high ionic conductivity of 2.09 mS cm-1and low areal resistance of 1.17Ω***,iodine doping could in-situ form LiI at the lithium/electrolyte interface and improve the critical current density of Li5.4PS4.4Cl1.6from 0.8 to 1.35 mA *** resultant LiCoO2/Li5.4PS4.4Cl1.4I0.2/Li battery shows excellent cycling stability at 1 C,with a reversible specific capacity of 110.1 mA h g-1and a retention of 80.5% after 1000 *** addition,the assembled LiCoO2/Li5.4PS4.4Cl1.4I0.2membrane/Li pouch cell delivers an initial discharge capacity of 110.4 mA h g-1and 80.5% capacity retention after 100 cycles.

关键词： Argyrodite electrolytes Iodine doping Ionic conductivity Stability All-solid-state lithium battery

Amplitude modulation and extreme events in turbulent channel flow

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2018年第1期34卷 1-9页

作者： y.C.yao W.x.Huang C.x.xu AML Department of Engineering Mechanics Tsinghua University

Amplitude modulation of near-wall turbulence by large-scale structures in the outer layer is investigated by direct numerical simulation of turbulent channel flows at Reynolds number Re= 540, 1000, 2000. The effect of modulation is obvious in the two-point cross-section correlation map, and the correlation coefficients increase significantly with the Reynolds number. The influence of modulation is reflected in the tail of the probability density function of the near-wall flow signals, which expands as the Reynolds number increases. The flatness factor provides a quantitative description of the high fluctuation events due to modulation. Vortical structures associated with modulation are revealed by conditionally averaging the flow field of the near-wall extreme events, providing a depiction of how the influence of the large-scale structures penetrate towards the near-wall region.

关键词： Wall turbulence Amplitude modulation Flatness Extreme events

FEM SIMULATION OF RESIDUAL STRESSES INDUCED By LASER SHOCK WITH OVERLAPPING LASER SPOTS

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2008年第2期21卷 125-132页

作者： y.x. Hu Z.Q. yao State Key Laboratory of Mechanical System and Vibration Shanghai Jiaotong University Shanghai 200240China

The finite element method is presented to attain the numerical simulation of the residual stresses field in the material treated by laser shock processing. The distribution of residual stresses generated by a single laser shock with square and round laser spot is predicted and validated by experimental results. With the Finite Element Method （FEM） model, effects of different overlapping rates and impact sequences on the distribution of residual stresses are simulated. The results indicate that：（1） Overlapping laser shock can increase the compressive residual stresses. However, it is not effective on the growth of plastically affected depth; （2） Overlapping rate should be optimized and selected carefully for the large area treatment. Appropriate overlapping rate is beneficial to obtain a homogeneous residual stress field; （3） The impact sequence has a great effect on the residual stress field. It can greatly attenuate the phenomenon of the “residual stress hole” to obtain a homogeneous residual stress field.

关键词： Laser shock processing Overlapping Residual stress Finite element method

Loading-unloading judgement for advanced plastic UH model

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2020年第4期36卷 827-839页

作者： x.Feng y.P.yao R.N.Li Z.Wan x.Dai College of Airport Civil Aviation University of ChinaTianjin 300300China School of Transportation Science and Engineering Beihang UniversityBeijing 100191China School of Automobile and Transportation Tianjin University of Technology and EducationTianjin 300222China Research Institute of Base and Foundation China Academy of Building ResearchBeijing 100013China

The unified hardening(UH)model proposed by yao et al.(Geotechnique 2009)is the constitutive model which can consider the influence of the complex stress path and stress history on the deformation and strength of clays ***,the loading-unloading criterion of material model is defined as the change law of the intersection of current yield surface and the p axis,which makes the loading-unloading in the process of hardening and softening can be unified considered in UH ***,the Newton-Raphson method is adopted to attain the nonlinear problems solution in the finite element method of UH model,and the semi-implicit return mapping method is adopted to update *** application of the UH model in the finite element is *** then,the analyses of triaxial test are performed using the unit prediction and finite element *** results of the unit prediction method are compared with the experimental results to illustrate the rationality of the UH *** the results with the unit prediction method and the finite element method,the correctness of the finite element program of the UH model is ***,Ae three-dimensional firdte element andysis of embankment on soft soil is performed by the *** comparison between the results calculated by the UH model and the modified Cam-clay(MCC)model and the experimental data shows that the UH model is rational in analyzing the actual embankment engineering on soft soil.

关键词： Over-consolidated clay Unified hardening model Loading-unloading judgement Finite element method Stress-strain

STUDy ON PREPARATION, COMPLEx PERMITTIVITy,PERMEABILITy AND MICROWAVE PROPERTIES OF BaZnzCo(2-z)Fe16O27/SiO2 MICROCRySTALLINE GLASS CERAMICS

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6期16卷 421-427页

作者： H.J.Zhang x.L.Jia x.yao L.y.Zhang HighTemperatureCeramicsInstitute ZhengzhouUniversityZhengzhou450052China FunctionalMaterialsResearchLaboratory TongjiUniversityShanghai200092China

BaZnzCo2-zFe16O27/SiO2 microcrystalline glass ceramics with Z=0.0, 0.5, 0.8 and 1.1 were prepared at temperature 1200℃ for 5h by citrate sol-gel process. The complex dielectric constant and complex permeability of BaZnzCo2-zFe16 O27/SiO2-paraffin wax composites had been measured. Both the complex dielectric constant and dielectric loss exhibit almost no variation with frequency in 0.1-6.0GHz. The real part of permeability decreases with increasing frequency for all samples, and the imaginary part of permeability exhibits a clear resonance peak at 1.44GHz for Co2 W/SiO2, 1.32GHz for Zn0.5Co1.5 W/SiO2, 1.20GHz for Zn0.8Co1.2W/SiO2, and 1.08GHz for Zn1.1 Co0.9 W/SiO2. It is also showed that the content of zinc has a close effect on the magnetic properties of BaZnzCo2-zFe16O27/SiO2 microcrystalline glass ceramics, the greater the zinc content, the higher the values of imaginary part of permeability and magnetic loss.

关键词： BaZnz Co2-zFe16O27/SiO2 microcrystalline glass ceramics,sol-gel microwave property

RESEARCH ON HyDROFORMING TUBULAR PART WITH LARGE PERIMETER DIFFERENCE

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2008年第2期21卷 133-138页

作者： x.S. Wang S.J. yuan x.R. Huang y.x. yao Z.R. Wang School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China School of Mechatronics Engineering Harbin Institute of Technology Harbin 150001 China

The tube hydro forming process for manufacturing the tubular part with large perimeter difference was studied by means of experiments and FE simulation. It is an asymmetrical one and the expansion ratio is 70 percent. The part is successfully hydro formed by applying the useful wrinkles to accumulate sufficient metal in the area with large expansion ratio. The thickness distribution is analyzed, and the maximum thinning ratio of the part is 21.6 percent. It is shown from the experiment and simulation results that the tubular part with large perimeter difference, long expansion area and asymmetrical shape can be obtained in one step, applying the useful wrinkles. Typical failure modes were analyzed.

关键词： Hydro forming Large expansion Useful wrinkle Asymmetricalpart

First-Principles Study of Phase Stability and Mechanical Property of Co_3(Al,W) Precipitates with Different Ratio of Al to W in Co Base Alloys

在线全文

学校读者我要写书评

暂无评论

稀有金属材料与工程 2009年第A3期38卷 1-4页

作者： yao Q Su x M yan y Zhao L W Sun J Shanghai Jiaotong University Shanghai 200240 China

The energetics, electronic structure and mechanical property of Co3(Al,W) precipitates with different ratio of Al to W in Co base alloys were investigated by the method of supercell and augmented plane waves plus local orbitals within generalized gradient approximation. The calculated results show that the L12 Co3(Al,W) precipitate is the most stable when the ratio of Al to W is equal to 1. When the content of W is higher than 18.5 at%, the L12 and hexagonal structures co-exist in Co3(Al,W) precipitates at 1173 K. It is also shown that the L12 ordered Co3(Al,W) precipitates have an obvious strengthening effect in the disordered fcc cobalt matrix.

关键词：铝电子结构力学性能碳酸