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Existence of Diffusion Orbits in a Lattice System

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Acta Mathematica Sinica,English Series 2013年第6期29卷 1075-1088页

作者： ji LI Department of Mathematics Nanjing University

We study a model which is a periodic lattice system with nearest neighbors coupling. Using the variational methods, we show the existence of diffusion orbits under a generic perturbation of time periodic.

关键词： Hamiltonian system lattice system Aubry-Mather theory variational methods

Ratiometrically Designed Nanocarrier to Impact Major Cancer Pathways for Effective Pancreatic Cancer Treatment

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Chemical Research in Chinese Universities 2020年第6期36卷 1143-1144页

作者： ji jian Key Laboratory of Macromolecule Synthesis and Functionalization of Ministry of Education Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027P.R.China

To achieve secured in vivo drug synergy in stroma-rich pancreatic cancer(PDAC)is not an easy *** and Liu et *** the rational development of a ratiometrically designed nanocarrier to co-package a CDK4/6 cel cycle inhibitor palbociclib(PAL)plus an autophagy inhibitor hydroxychloroquine(HCQ)for efficient PDAC treatment The lead formulation was obtained using a computer software aided in vitro screening,followed by a remote drug co-import into a lipid-coated mesoporous silica *** ratiometric nanocarrier led to the synchronized phar-macokinetic(PK)profile and effective intratumoral buildup of the drug pair post intravenous injection,which otherwise exhibited distinctly different biodistribution *** treatment using PAL/HCQ co-delivery nanoparticle:yielded the most effective shrinkage of PDAC in subcutaneous and orthotopic PANCI mouse *** mechanistic investigation also demonstrated the activation of anti-apoptosis pathway after repetitive nanoparticle injection in mice which promoted the authors to introduce a small molecule anti-apoptosis inhibitor to further improve the performance of their already potent nanoparticle in the PDAC mouse *** work has been published online in Nature Communi cations on August 25,2020.

关键词： injection otherwise treatment

Purely tetrahedral quadruple systems

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Science China Mathematics 2006年第10期49卷 1327-1340页

作者： ji Lijun Department of Mathematics Suzhou University Suzhou 215006 China

An oriented tetrahedron is a set of four vertices and four cyclic triples with the property that any ordered pair of vertices is contained in exactly one of the cyclic triples. A tetrahedral quadruple system of order n (briefly TQS(n)) is a pair (X,B), where X is an nelement set and B is a set of oriented tetrahedra such that every cyclic triple on X is contained in a unique member of B. A TQS(n) (X, B) is pure if there do not exist two oriented tetrahedra with the same vertex set. In this paper, we show that there is a pure TQS(n) if and only if n≡2,4(mod 6),n＞4,or n≡1,5(mod 12). One corollary is that there is a simple two-fold quadruple system of order n if and only if n≡2,4 (mod 6) and n＞4, or n≡1, 5 (mod 12).Another corollary is that there is an overlarge set of pure Mendelsohn triple systems of order n for n≡1,3(mod 6),n＞3, or n≡0,4 (mod 12).

关键词： large set, t-wise balanced design, Mendelsohn triple system, quadruple system.

ON THE RELATION BETWEEN CAVITATION INCEPTION AND FLOW PATTERN ON PROPELLER BLADES

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Journal of Hydrodynamics 1992年第2期4卷 79-86页

作者： ji, Zhiye China Ship Scientific Research Center Wuxi China

Experimental results of model propeller are obvious different from that of prototype for the stage of cavitation inception, which is called scale effect. The differences in flow pattern between model and full-scale condition can be eliminated using tripping devices at leading edge of model propeller. In this paper, oil flow visualization on the model propeller with and without tripping devices at the leading edge was revealed. The cavitation inception was observed at different Reynolds numbers to examine the dependence of cavitation inception with flow pattern. Detection of cavitation erosion was made and compared the location erosions of model propeller and prototype to investigate cavitation phenomena on the model propeller. The calculations of pressure distribution and the behaviour of boundary layer on the propeller blade were done by theoretical method. For better understanding of cavitation inception, further study is necessary.

关键词： Propellers Cavitation Ship Models Ships Simulators

Projective Dirichlet Boundary Condition with Applications to a Geometric Problem

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Acta Mathematica Sinica,English Series 2016年第1期32卷 11-24页

作者： Min ji Academy of Mathematics and Systems Science Chinese Academy of Sciences

Given a domain Ω R^n, let λ 〉 0 be an eigenvalue of the elliptic operator L ：= ∑i,j^n= 1δ/δxi on Ω for Dirichlet condition. For a function f ∈ L2（Ω）, it is known that the linear resonance equation Lu ＋ λu = f in Ω with Dirichlet boundary condition is not always solvable. We give a new boundary condition Pλ（u｜δΩ） = g, called to be projective Dirichlet condition, such that the linear resonance equation always admits a unique solution u being orthogonal to all of the eigenfunctions corresponding to λ which satisfies ｜｜u｜｜2,2 ≤ C（｜｜f｜｜2 ＋｜｜g｜｜2,2） under suitable regularity assumptions on δΩ and L, where C is a constant depends only on n, Ω, and L. More a priori estimates, such as W^2~＇P-estimates and the C^2,α-estimates etc., are given also. This boundary condition can be viewed as a generalization of the Dirichlet condition to resonance equations and shows its advantage when applying to nonlinear resonance equations. In particular, this enables us to find the new indicatrices with vanishing mean （Cartan） torsion in Minkowski geometry. It is known that the geometry of indicatries is the foundation of Finsler geometry.

关键词： Elliptic resonance equation nonlinear boundary condition convex indicatrix mean tor-sion

社区支持农业模式下绿色互动对消费者价值共创行为的影响

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中国流通经济 2025年第1期39卷 86-99页

作者：张蓓黄薏翰朱吉婵华南农业大学经济管理学院广东广州510642 广东省哲学社会科学重点实验室--乡村振兴实验室广东广州510642 广东省哲学社会科学重点实验室--农业农村政策与改革创新实验室广东广州510642

引导消费者参与价值共创有助于促进社区支持农业高质量发展,推动农业现代化转型升级。基于双系统理论,探讨两种不同形式的绿色互动对消费者价值共创行为的影响,以及数字信任与绿色信任的并行中介作用和社区氛围的调节效应。采用偏最小... 详细信息

引导消费者参与价值共创有助于促进社区支持农业高质量发展,推动农业现代化转型升级。基于双系统理论,探讨两种不同形式的绿色互动对消费者价值共创行为的影响,以及数字信任与绿色信任的并行中介作用和社区氛围的调节效应。采用偏最小二乘结构方程模型(PLS-SEM)对收集的472份有效调查数据进行分析。研究发现:绿色情感互动和绿色信息互动正向促进消费者价值共创行为,且前者的作用更显著,表明绿色情感互动通过触发消费者对社区支持农业绿色生产理念的价值共振,对消费者价值共创行为的正向作用更大;数字信任和绿色信任在其中起并行中介作用,即绿色情感互动与绿色信息互动通过数字信任和绿色信任两条并行的心理机制路径间接影响消费者价值共创行为。值得关注的是,社区氛围不仅削弱数字信任与消费者价值共创行为间的关系,还会弱化绿色情感互动与绿色信息互动通过数字信任和绿色信任影响消费者价值共创行为的间接效应,较强的社区氛围或许引发信息超载和虚假舆论等负面影响,导致绿色互动通过消费者信任对价值共创行为的间接影响减弱。鉴于此,为更好促进消费者价值共创行为,社区支持农业实践者应为消费者打造沉浸式交互场景,强化成员间绿色价值情感纽带;开发可视化溯源系统,筑牢消费者对社区支持农业的数字信任与绿色信任基础;畅通多元化交流渠道,营造理性自由社区氛围。研究结论从理论上厘清绿色互动如何促进消费者价值共创行为,从实践上为优化社区支持农业经营策略,推进农业农村现代化提供有益借鉴。

关键词：绿色互动信任价值共创行为社区氛围社区支持农业

Interaction between photons and electrons

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Nuclear Science and Techniques 2006年第6期17卷 334-341页

作者： ji Kai Institute of Materials Structure Science High Energy Accelerator Research Organization （KEK） Graduate University for Advanced Studies Oho 1-1 Tsukuba lbaraki 305-0801 Japan

By using a path-integral theory, the photoemission spectra of the electron-phonon (e-ph) coupled systems are calculated exactly. The spectral properties of the e-ph coupled systems based on the 1D and 2D Holstein models are systematically studied under various conditions. The electronic band structure is found to be greatly modified by the multiple scattering effect of electron with phonons, so as to produce a spectral evolution from broad Gaussian at band bottom to two-headed Lorentzian near the Fermi energy. This evolution reflects a transition of electronic states from localized incoherent one to the extended coherent one near the Fermi energy. The results qualitatively agree with recent experiments of high resolution ARPES on the Be (0001) surface and Bi2Sr2CaCu2O8.

关键词：交互作用光量子电子路径积分理论

Proton tomography through deeply virtual Compton scattering

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National Science Review 2017年第2期4卷 213-223页

作者： Xiangdong ji Department of Physics Maryland Center for Fundamental PhysicsUniversity of MarylandCollege Park INPAC Department of Physics and AstronomyShanghai Jiao Tong University

In this prize talk, I recall some of the history surrounding the discovery of deeply virtual Compton scatering, and explain why it is an exciting experimental tool to obtain novel tomographic pictures of the nucleons at Jeferson Lab 12 GeV facility and the planned Electron-Ion Collider in the *** is certainly a great honor to have received the 2016 Herman Feshbach Prize in theoretical nuclear physics by the American Physical Society. I sincerely thank my colleagues in the Division of Nuclear Physics to recognize the importance of some of the theoretical works I have done in the past, particularly their relevance to the experimental programs around the world.

关键词： proton structure high-energy scattering quantum chromodynamics quarks and gluons Compton scattering

Towards rational design of low-temperature co-fired ceramic(LTCC)materials

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Journal of Advanced Ceramics 2012年第2期1卷 89-99页

作者： ji ZHOU State Key Laboratory of New Ceramics and Fine Processing Tsinghua UniversityBeijing 100084China

High performance low temperature co-fired ceramic(LTCC)dielectrics is highly desired for next generation information *** rational design is a key issue for the development of new LTCC *** comparison to the design of conventional electroceramics,more attention should be paid on the formation process of the material structure for that of LTCC,in addition to the physical properties,due to the special requirement in fabrication *** this paper,sintering mechanism of three types of LTCC materials,i.e.,glass-ceramics,glass ceramic composite,and glass bonded ceramics,as well as important factors of their dielectric properties are discussed and summarized,and the design strategies for LTCC dielectrics,based on new matrix materials with much lower sintering temperature or higher quality,are *** an example for rational design,oxyfluoride glass-ceramic based dielectrics,a new class of LTCC materials with lowεr,is analyzed.

关键词： LTCC sintering dielectric properties material design