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Journal of Iron and Steel Research International 2019年第12期26卷 1329-1339页

作者： Xiao-hui Wang Jian Kang Yun-jie Li Guo Yuan RDKMisra Guo-dong Wang State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819LiaoningChina Laboratory for Excellence in Advanced Steel Research Department of MetallurgicalMaterials and Biomedical EngineeringUniversity of Texas at El PasoEl PasoTX 79968USA

The scanning electron microscope,transmission electron microscope,optical microscope,X-ray diffraction and hardness tests were used to investigate the effect of deformation parameters in unrecrystallization range on microstructural characteristics in Al-bearing hot-rolled transformation-induced plasticity *** thermomechanical-controlled processing was carried out with thermomechanical simulation machine,and the samples were compressed to compression strains of 0,0.15,0.25 and 0.35 at compression temperatures of 850,900 and 950°*** results showed that the volume fraction of polygonal ferrite increased with the increasing compression strain,while the volume fraction of retained austenite reached the maximum value at compression strain of *** volume fraction of polygonal ferrite decreased with the increasing compression temperature,whereas the volume fraction of retained austenite possessed the maximum value at compression temperature of 850°*** granular retained austenite was present in uncompressed samples,and some pearlite appeared at large compression strain,while the hardness of the samples exhibited the similar variation tendency to the volume fraction of retained austenite.

关键词： Hot-rolled TRIP steel deformation parameter Compression strain Compression temperature Microstructural characteristic

Systematic description of nuclear electric quadrupole moments

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Chinese Physics C 2018年第12期42卷 123-131页

作者： Xiao-Jun Sun Chun-Xing Chen Ning Wang Hou-Bing Zhou College of Physics Guangxi Normal UniversityGuilin 541004China

The nuclear electric quadrupole moment （NQM） is one of the fundamental bulk properties of the nucleus with which nuclear deformations can be investigated. The number of measured NQMs is significantly less than that of known masses, and there is still no global NQM formula for all bound nuclei. In this paper, we propose an analytical formula, which includes the shell corrections and which is the function of the charge number, mass number, spin, charge radius, and nuclear deformation, for calculating the NQMs of all bound nuclei. Our calculated NQMs of 524 nuclei in their ground states are reasonable compared to the experimental data based on the nuclear deformation parameters derived from the Weizsacker-Skyrme （WS） nuclear mass models. Smaller rms deviations between the calculated NQMs and experimental data indicate that the deformation parameters predicted from the WS mass models are reasonable. In addition, 161 unmeasured NQMs with known spins are also predicted with the proposed formula.

关键词： nuclear electric quadrupole moment analytical formula deformation parameter

Drag force on a moving heavy quark with deformed string configuration

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Communications in Theoretical Physics 2022年第4期74卷 61-67页

作者： Sara Tahery Xurong Chen Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China

To study drag force on a moving heavy quark through a plasma,we use a deformed AdS spacetime,in which deformation parameter c describes non-conformality in AdS/*** this case,the quark is mapped to a probe string in the AdS *** the probable contribution of the deformation parameter in the probe string,we apply a general form of c-dependent string ansatz in the drag force ***,we find the acceptable value of this parameter as it satisfies QCD *** this result,we also discuss the diffusion constant which is in agreement with the phenomenological result for the non-relativistic ***,we show that while in absence of a deformation parameter,the probe string is a strictly increasing function of radial coordinate,the c-dependent probe string has a maximum value versus z.

关键词： AdS/QCD drag force deformation parameter

deformation OF MOISTURE FLUX CIRCULATION SURROUNDING THE LANDFALL TYPHOON “BILIS”

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Journal of Tropical Meteorology 2009年第2期15卷 167-180页

作者：冉令坤杨文霞洪延超 Institute of Atmospheric Physics Chinese Academy of Sciences Graduate School of Chinese Academy of Sciences

The deformation parameter （DP）, which is defined as the product of shear deformation and stretching deformation of moisture flux circulation, is introduced. The tendency equation of DP is derived in pressure coordinates. Furthermore, DP is used to diagnose the deformation character of moisture flux circulation in the periphery of Bilis. The analysis showed that before Bilis landed, DP presented eight abnormal areas, which distributed alternately and closely encircled the low-pressure center. This indicated that the moisture flux circulation in the periphery of Bills rotated counterclockwise and stretched longitudinally and latitudinally to deform. After Bilis landed, DP weakened gradually and its regular pattern of horizontal distribution loosened. The shear and stretching deformations of moisture flux circulation surrounding Bilis weakened after the typhoon landed. The deformation of moisture flux circulation in the periphery of Bilis mainly appeared in the middle-lower troposphere. There existed 1/2 phase difference between the shear and stretching deformations in the vertical-latitudinal cross section and a π/4 phase difference between them on the horizontal plane. As Bilis landed and further moved inland of China, the intensities of DP, shear and stretching deformations decreased, meanwhile their vertical and horizontal structures became irregular. The chief dynamic factors responsible for the deformation of moisture flux circulation in the periphery of Bilis were the three terms associated with the three-dimensional advection transportation of DP, square difference between shear and stretching deformations coupling with Coriolis parameter, and horizontal gradient of geopotential height before Bilis landed. The last two dynamic factors impacted jointly on the deformation of moisture flux circulation after Bilis landed.

关键词： deformation parameter shear deformation stretching deformation moisture flux circulation

B(E2) value of even-even ^(108-112)Pd isotopes by interacting boson model-1

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Chinese Physics C 2014年第2期38卷 24-28页

作者： I.Hossain H.Y.Abdullah I.M.Ahmad M.A.Saeed Department of Physics Rabigh College of Science and Arts King Abdulaziz University Department of Physics College of Education Scientific Department Salahaddin University Department of Physics College of Education Mosul University Department of Physics Faculty of Science Universiti Teknologi Malaysia

This work studies the systematic reduced transition probabilities B（E2）↓, intrinsic quadrupole moments and deformation parameters of Pd isotopes with even neutrons from N =62 to 66. The downward reduced transition probabilities B（E2）↓from gamma transition 8^＋to 6^＋, 6^＋ to 4^＋, 4^＋ to 2^＋ and 2^＋ to 0＋states of even-even108 112Pd isotopes were calculated by the Interacting Boson Model（IBM-1） and compared with the available previous experimental results. The ratio of the excitation energies of the first 4＋and the first 2＋excited states, R4/2, is also studied for the classification of symmetry of these nuclei. Furthermore we have studied systematically the transition rate R = B（E2： L＋ →（L 2）＋）/B（E2 ： 2＋ →0＋） of some of the low-lying quadrupole collective states in comparison with the available experimental data. The associated quadrupole moments and deformation parameters have been calculated. The results of this calculation are in good agreement with the corresponding available experimental data. The108 112Pd isotopes show the O（6） symmetry.

关键词： B(E2) ground-states Pd isotopes.quadrupole moments deformation parameter

Elasto-Plasticity Critical Corrosive Ratio Model for RC Structure Corrosive Expanding Crack

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Wuhan University Journal of Natural Sciences 2007年第6期12卷 1083-1088页

作者： CHEN Yueshun LU Yiyan LIU Li School of Civil Engineering Wuhan University Wuhan 430072 Hubei China School of Civil Engineering and Architecture Hubei University of Technology Wuhan 430068 Hubei China

The parameter of filling expanding ratio n, plasticity factor k1 and deformation parameter k2 is raised, and then the elasto-plasticity critical corrosive ratio model for RC structure corrosive expanding crack based on elasto-plasticity theory is constructed in this paper. The influences of parameters such as filling expansion ratio n, plasticity factor kl, deformation parameter k2, Poisson ratio of concrete v, diameter of reinforced bar d and protective layer thickness c on the critical corrosive ratio are researched by theory analysis and experiments. The experimental results validate the accuracy of the model. According to the experimental study, the least squares solution is calculated as n = 1.8 ,k1 =0.61 ,k2 =0.5.

关键词： reinforcement corrosion critical corrosive ratio filling expanding ratio plasticity factor deformation parameter

Upward Transition Probabilities B(E2)↑ Properties Study of Even-Even <sup>104-114</sup>Ru Nuclei

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World Journal of Nuclear Science and Technology 2020年第3期10卷 129-137页

作者： Tazul Islam Ruhol Amin Md. Ashraful Alam Jobaidul Islam Department of Physics Mawlana Bhashani Science and Technology University Tangail Bangladesh

In this research work, the upward transition probabilities for the transition levels, 0+ → 2+, 2+ → 4+, 4+ → 6+ and 6+ → 8+ levels of even-even neutron rich 104-114Ru isotopes have been calculated by using the Global Best Fit (GBF) method. In addition, the associated parameters such as, Quadrupole moment and deformation parameter of even-even 104-114Ru have been calculated. The dependency of these nuclear parameters shows the nuclear magic number tendency.

关键词： Upward Transition Probability Quadrupole Moment deformation parameter Global Best Fit (GBF) Method