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Acta Mathematicae Applicatae Sinica 2023年第4期39卷 990-1008页

作者： xin zhong School of Mathematics and Statistics Southwest UniversityChongqing 400715China

We are concerned with singularity formation of strong solutions to the two-dimensional(2D)full compressible magnetohydrodynamic equations with zero resistivity in a bounded *** energy method and critical Sobolev inequalities of logarithmic type,we show that the strong solution exists globally if the temporal integral of the maximum norm of the deformation tensor is *** result is the same as Ponce’s criterion for 3D incompressible Euler *** particular,it is independent of the magnetic field and ***,the initial vacuum states are allowed.

关键词： full compressible magnetohydrodynamic equations zero resistivity formation of singularity

Simple and Ultrahigh Efficient Superhydrophilic Polydopamine-coated TiO_(2) Cotton for Oil-water Separation

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Journal of Bionic Engineering 2023年第3期20卷 900-909页

作者： xin zhong Zhiguang Guo Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei UniversityWuhan430062China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou730000China

Oil–water mixing has brought many problems to a society, and it is of great significance to develop a simple, convenient, efficient, and durable separation material to solve the problem of oil–water mixing. In this paper, modified cottons were successfully prepared using polydopamine as the in situ mineralization site of TiO_(2) nanoparticles combined with synergistic crosslinking with KH550. A large number of hydrophilic groups endowed the cotton with superhydrophilic ability, which greatly shortened its water spreading time. The prepared modified cotton could be successfully separated from oil and water, and still had a separation efficiency of 99.999% after 50 cycles. In addition, after 24 h immersion in 1 M HCl, NaOH, and NaCl solutions and 50 abrasion experiments, the modified cotton showed excellent oil–water separation ability, and the separation efficiency was above 99.990%. Successfully provided a simple preparation method to prepare high-efficiency and clean cottons for oil–water separation.

关键词： Oil-water separation Superhydrophilicity Cotton Polydopamine

Gravitational lensing properties of an isothermal universal halo profile

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Research in Astronomy and Astrophysics 2013年第5期13卷 517-525页

作者： xin-zhong Er National Astronomical Observatories Chinese Academy of Sciences

N-body simulations predict that dark matter halos with different mass scales are described by a universal model, the Navarro-Frenk-White （NFW） den- sity profiles. As a consequence of baryonic cooling effects, these halos will become more concentrated, and similar to an isothermal sphere over a large range in radii （～ 300 h-1 kpc）. The singular isothermal sphere （SIS） model however has to be trun- cated artificially at large radii since it extends to infinity. We model a massive galaxy halo as a combination of an isothermal sphere and an NFW density profile. We give an approximation for the mass concentration at different baryon fractions and present exact expressions for the weak lensing shear and flexion for such a halo. We compare the lensing properties with the SIS and NFW profiles. We find that the combined pro- file can generate higher order lensing signals at small radii and is more efficient in generating strong lensing events. In order to distinguish such a halo profile from the SIS or NFW profiles, one needs to combine strong and weak lensing constraints for small and large radii.

关键词： gravitational lensing -- galaxies: halos -- cosmology: dark matter

Preparation and Thermal Properties of Grafted CNTs Composites

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Journal of Materials Science & Technology 2011年第3期27卷 233-238页

作者： Jifen Wang Huaqing Xie zhong xin State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai 200237 China School of Urban Development and Environmental Engineering Shanghai Second Polytechnic University Shanghai 201209 China

Oleylamine （G18） and octanol （G8） were grafted onto the surfaces of the multi-walled carbon nanotubes （CNTs）. The grafted CNTs were dispersed into palmitic acid （PA） and paraffin wax （PW） to prepare phase change composites. The heat storage/retrieval experiments showed that the composites kept stable after repeating melting and solidification for 80 times. The structure of the G18-CNT/PA and G8-CNT/PA was homogenous compared with the pristine CNT （P-CNT）/PA. The latent heat capacity （Ls） of solid liquid phase change of G18-CNT/PW was higher than that of PW while those of the G8-CNTI/PW and P-CNT/PW were lower than that of PW. Compared with PA, all PA based composites with both P-CNTs and grafted CNTs decreased Ls evidently. The Ls values of GI8-CNT composites in both matrices were higher than that of the counterparts of G8-CNT. The thermal conductivities of all the PA based composites in the study were higher than that of PA, as well as those of all the PW based composites. However, the thermal conductivities of the GI8-CNT composites in both matrixes were lower than those of the G8-CNT composites in both matrixes at all measured temperatures.

关键词： Carbon nanotube (CNT) Grafting Phase change composite Thermal property

Effect of hydrogen donating ability of benzofuranone on the antioxidant activity

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Chinese Science Bulletin 2010年第1期55卷 27-31页

作者： MENG xin xin zhong State Key Laboratory of Chemical Engineering and Product Engineering Department School of Chemical Engineering East China University of Science and Technology Shanghai 200237 China

The rate constants for the hydrogen donation of three 3-aryl-benzofuranone compounds with tert-butoxyl radicals have been cal-culated through laser flash photolysis (LFP) technique, which were used to evaluate the hydrogen donating abilities of those 3-aryl-benzofuranone compounds. The antioxidant activities of those 3-aryl-benzofuranone compounds in polypropylene (PP) have been studied using the oxidation induction time (OIT) of PP stabilized by those 3-aryl-benzofuranone compounds too. It has been found that the methyl group on the 2'-position can prevent the hydrogen donation of 3-aryl-benzofuranone with tert-butoxyl radicals and weakens the antioxidant activity of 3-aryl-benzofuranone in the oxidation of PP, i.e., the greater is the hydrogen do-nating ability of 3-aryl-benzofuranone with radicals, the better is the antioxidant activity of 3-aryl-benzofuranone in the oxidation of PP in the presence of oxygen.

关键词：苯并呋喃酮抗氧化活性能力氢氧化诱导时间抗氧化作用化合物聚丙烯

＂Engaged Buddhism＂ Oriented Buddhism Charity and Philanthropy Analyzing of Three Buddhism- related NPOs in Nanjing

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学术界 2014年第10期 293-301页

作者： zhong xin Law School Nanjing University of Finance and Economics Sanjing 210023

Religious people have participated in social service for a long time,and the spreading of the theory of "Engaged Buddhism"provides Charity work with much legitimacy among religious people. This paper uses three Buddhist NPO s as cases: "Classics Reading Class","H ui Ji Temple Charity ",and "H ome of Friends of Buddhism",tries to find what are the supporting theory of the three NPO s,howdo they motivate charity funds and volunteers,their activities,and their relationship with government. We find,the three NPO s use "Engaged Buddhism"as their leading theory,and they use charity and philanthropy to stimulate participants to serve people and society,combining belief with practice. Besides,in current circumstance,we also notice that the NPO s showthe characters of making a comprise with government and secular society.

关键词：非营利组织佛教事业社会服务南京合法性志愿者参与者

Challenges in cell membrane-camouflaged drug delivery systems:Development strategies and future prospects

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Chinese Chemical Letters 2021年第8期32卷 2347-2358页

作者： xinlong Liu xin zhong Chong Li College of Pharmaceutical Sciences Southwest UniversityChongqing 400715China

Extensive research has been performed on cell membrane camouflaged-based drug delivery systems in recent ***,we provide an overview of the challenges in system preparation,functional design,continuous industrial production of these systems,and solution strategies for these ***,we analyze and discuss the frontier medical applications of cell membrane-camouflaged drug delivery systems in anti-inflammatory,anti-pathogenic microorganisms,and biological *** review takes a challenge-oriented perspective and seeks innovative strategies,provides a literature review of research into cell membrane-camouflaged drug delivery systems,and promotes the development of personalized clinical treatments.

关键词： Cell membrane materials Drug delivery systems Multi-functionality Active targeting Biological detoxification

Cooper Pairing Near the Boundary in the -U Hubbard Model

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Chinese Physics Letters 1997年第9期14卷 698-700页

作者： XU Yuan YAN xin-zhong Institute of Physics Chinese Academy of SciencesBeijing 100080

The Cooper pairing near the boundary of a superconductor is analyzed by using the linear-response theory The system is described by the square lattice(t,-U)Hubbard model occupying half *** half filling,the pairing also corresponds to the antiferromagnetic ordering in the repulsive Hubbard *** numerical result clearly shows that,at weak to intermediate coupling(U/t≤l),the boundary exerts strong influence on the order parameter;the weaker the coupling,the deeper the order parameter is suppressed near the *** present scheme is valid in the whole temperature regime of Cooper pairing.

关键词： space. Hubbard coupling

Hydrodynamic Pattern in Drying Saline Droplet with Suspended Nanoparticles

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Journal of Bionic Engineering 2020年第4期17卷 802-808页

作者： Junheng Ren xin zhong Lu Shen Fei Duan School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 639798Singapore State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong UniversityXi'an 710049China

Evaporation of multicomponent droplets has gained much attention nowadays because of their complex flow fields and various deposition *** we observe strong flows in evaporating sodium chloride saline droplets with suspended alumina oxide *** evolution of flow pattern was studied by tracking the trajectories of particles and the velocity field was investigated with Particle Image Velocimetry *** non-uniform evaporation rate along the droplet surface leads to a concentration gradient which induces the convection *** the evaporation process before crystallization happens,evolution of the flow can be divided into two *** Regime I,a centrosymmetric convection recirculation is formed *** RegimeⅡ,the convection recirculation migrates to the droplet edge and evolves into several small *** the late evaporation stage,crystallization could induce strong convection *** is shown that the flow tends to become more chaotic with a lower salt concentration.

关键词： convection flow concentration gradient saline droplet crystallization

GLOBAL STRONG SOLUTION AND EXPONENTIAL DECAY OF 3D NONHOMOGENEOUS ASYMMETRIC FLUID EQUATIONS WITH VACUUM

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Acta Mathematica Scientia 2021年第5期41卷 1428-1444页

作者： Guochun WU xin zhong Fujian Province University Key Laboratory of Computational Science School of Mathematical SciencesHuaqiao UniversityQuanzhou 362021China School of Mathematics and Statistics Southwest UniversityChongqing 400715China

We prove the global existence and exponential decay of strong solutions to the three-dimensional nonhomogeneous asymmetric fluid equations with nonnegative density provided that the initial total energy is suitably *** that although the system degenerates near vacuum,there is no need to require compatibility conditions for the initial data via time-weighted techniques.

关键词： nonhomogeneous asymmetric fluid equations global strong solution exponential decay vacuum