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Isospin dependence of nucleon effective masses in neutron-rich matter

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Nuclear Science and Techniques 2016年第6期27卷 25-32页

作者： bao-An Li bao-Jun Cai Lie-Wen Chen Xiao-Hua Li Department of Physics and Astronomy Texas A&MUniversity-Commerce Department of Physics and Astronomy and Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai Jiao Tong University School of Nuclear Science and Technology University of South China

In this talk,we first briefly review the isospin dependence of the total nucleon effective mass M Jinferred from analyzing nucleon-nucleus scattering data within an isospin-dependent non-relativistic optical potential model,and the isospin dependence of the nucleon E-mass M;E J obtained from applying the Migdal–Luttinger theorem to a phenomenological single-nucleon momentum distribution in nuclei constrained by recent electron-nucleus *** information about the isospin dependence of both the nucleon total effective mass and E-mass,we then infer the isospin dependence of nucleon k-mass using the well-known relation M_J~*=M_ J^(*1E).Implications of the results on the nucleon mean free path in neutron-rich matter are discussed.

关键词：同位旋相关有效质量单核子核物质丰中子平均自由程非相对论分析数据

Permeability measurement of the fracture-matrix system with 3D embedded discrete fracture model

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Petroleum Science 2022年第4期19卷 1757-1765页

作者： bao Jia Cheng-Gang Xian State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Bejing)Beijing 102249China Unconventional Petroleum Research Institute China University of Petroleum(Bejing)Bejing 102249China

In this work, we performed the pulse-decay experiment on a fractured shale core and applied the 3 D embedded discrete fracture model(EDFM) to simulate the experiment process. The irregularly rough fracture surface was depicted in detail using a 3 D scanner. Then the fracture surface profile was imported in the discrete fracture network model to simulate the flow process in the fracture-matrix system realistically. History matching was efficiently performed to simultaneously obtain porosity and permeability for the matrix and fracture. Gas properties after applying nanopore confinement were obtained by modifying Sutton's viscosity correlation with sensitivity analysis on the pore diameter ranging from 2 to50 nm. Nanopore confinement results in low matched permeability due to viscosity reduction in the matrix-only porous media. The fracture-matrix system complicates the interpretation of nanopore confinement impact on flow behavior in shale reservoirs. Different scenarios of the highly fractured and matrix-dominated systems were discussed in detail by constructing the digital twin model.

关键词： Permeability Fracture Pulse-decay Shale Viscosity

Inherent Nodal Structures of the Wavefunctions of a 4-Boson System

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Chinese Physics Letters 1997年第1期14卷 20-23页

作者： bao Cheng-guang Department of Physics Zhongshan UniversityGuangzhou 510275

The effect of a kind of nodal surfaces originated from the inherent symmetry on a 4-boson system has been *** was found that these surfaces determine the accessibility of specific geometric structures.

关键词： surfaces symmetry system

Analysis of the Low-Lying Spectra of Five-Nucleon Systems

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Chinese Physics Letters 2000年第7期17卷 485-487页

作者： bao Cheng-Guang Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion AcceleratorLanzhou 730000 Department of Physics Zhongshan UniversityGuangzhou 510275(mailing address)

The wavefunctions are decomposed into components. The inherent nodal structure and the stability of these components are investigated. It is assumed that the low-lying states would be dominated by the components without inherent nodal surfaces. Based on this assumption, the composition of the wave functions of the low-lying states of 5He has been suggested and the qualitative feature of the spectrum has been explained.

关键词： nodal assumed qualitative

The Cauchy Problems and Global Solutions to the Deybe System and Burgers' Equations in Pseudomeasure Spaces

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Acta Mathematica Sinica,English Series 2007年第3期23卷 439-448页

作者： bao Quart YUAN College of Mathematics and Informatics He'nan Polytechnic University Jiaozuo 454000 P. R. China and Institute of Applied Mathematics Academy of Mathematics & Systems Science Chinese Academy of Sciences Beijing 100080 P.R. China

In this paper we consider the Cauchy problems of Burgers＇ equations and the Deybe system. Their existence and uniqueness of the time-global solutions for small initial data in some pseudomeasure spaces are obtained. The asymptotic stability of small solutions is proved. As an immediate result the existence and uniqueness of the self-similar solutions are also obtained provided the initial data satisfy the self-similar structures.

关键词： Burgers' equations Deybe system pseudomeasure spaces self-similar solutions asymptotic stability

A Sufficient Condition on 3-colorable Plane Graphs Without 5- and 6-circuits

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Acta Mathematicae Applicatae Sinica 2014年第3期30卷 765-772页

作者： bao-gang Xu Institute of Mathematics School of Mathematical SciencesNanjing Normal University

In 2003, Borodin and Raspaud proved that if G is a plane graph without 5-circuits and without triangles of distance less than four, then G is 3-colorable. In this paper, we prove that if G is a plane graph without 5- ... 详细信息

关键词： plane graph circuit coloring

Editorial for special issue on USTB-RWTH Aachen’s 40 years of collaboration

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International Journal of Minerals,Metallurgy and Materials 2021年第5期28卷 739-740页

作者： Yan-ping bao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The year of 2019 is the 40th anniversary of the signing of the inter-school collaboration agreement between University of Science and Technology Beijing(USTB)and RWTH Aachen *** is also the first friendly inter-school collaboration agreement signed between domestic universities and foreign universities after China's reform and *** order to commemorate this important historical event,the special academic issue is published in International Journal of Minerals,Metallurgy and Materials after friendly negotiation between RWTH Aachen and USTB.

关键词： collaboration universities friendly

Coupling for Markovian switching jump-diffusions

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Applied Mathematics(A Journal of Chinese Universities) 2013年第2期28卷 204-216页

作者： XI Fu-bao School of Mathematics Beijing Institute of Technology

This work is concerned with coupling for a class of Markovian switching jump-diffusion *** processes under consideration can be regarded as a number of jump-diffusion processes modulated by a Markovian switching *** t... 详细信息

关键词： Jump-diffusion Markovian switching successful coupling order-preserving coupling.

The Affine Complete Hypersurfaces of Constant Gauss-Kronecker Curvature

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Acta Mathematica Sinica,English Series 2009年第8期25卷 1353-1362页

作者： bao Fu WANG Department of Mathematics Sichuan University Chengdu 610064 P. R. China

Given a bounded convex domain Ω with C∞ boundary and a function ψ∈C∞（δΩ）, Li-Simon-Chen can construct an Euclidean complete and W-complete convex hypersurface M with constant affine Gauss-Kronecker curvature,... 详细信息

关键词： Gauss-Kronecker curvature affine completeness