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Applied Mathematics and Mechanics(English Edition) 2018年第8期39卷 1147-1164页

作者： Hongxia GUO ping lin lin LI Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and Physics University of Science and Technology Beijing Division of Mathematics University of Dundee School of Mathematics and Physics University of South China

The self-similarity solutions of the Navier-Stokes equations are constructed for an incompressible laminar flow through a uniformly porous channel with retractable walls under a transverse magnetic field. The flow is driven by the expanding or contracting walls with different permeability. The velocities of the asymmetric flow at the upper and lower walls are different in not only the magnitude but also the direction. The asymptotic solutions are well constructed with the method of boundary layer correction in two cases with large Reynolds numbers, i.e., both walls of the channel are with suction, and one of the walls is with injection while the other one is with suction. For small Reynolds number cases, the double perturbation method is used to construct the asymptotic solution. All the asymptotic results are finally verified by numerical results.

关键词： laminar flow asymmetric flow asymptotic solution porous and retractable channel magnetic field

Control-oriented Modeling for Air-breathing Hypersonic Vehicle Using Parameterized Configuration Approach

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Chinese Journal of Aeronautics 2011年第1期24卷 81-89页

作者： LI Huifeng lin ping XU Dajun School of Astronautics Beijing University of Aeronautics and Astronautics Beijing 100191 China

This article presents a parameterized configuration modeling approach to develop a 6 degrees of freedom （DOF） rigid-body model for air-breathing hypersonic vehicle （AHV）. The modeling process involves the parameterized configuration design, inviscous hypersonic aerodynamic force calculation and scramjet engine modeling. The parameters are designed for airframe-propulsion integration configuration, the aerodynamic force calculation is based on engineering experimental methods, and the engine model is acquired from gas dynamics and quasi-one dimensional combustor calculations. Multivariate fitting is used to obtain analytical equations for aerodynamic force and thrust. Furthermore, the fitting accuracy is evaluated by relative error （RE）. Trim results show that the model can be applied to the investigation of control method for AHV during the cruise phase. The modeling process integrates several disciplines such as configuration design, aerodynamic calculation, scramjet modeling and control method. Therefore the modeling method makes it possible to conduct AHV aerodynamics/propulsion/control integration design.

关键词： flight dynamics hypersonic AHV model parameterized configuration design aerodynamics/propulsion integration

ESTIMATED AND EXACT SYSTEM RELIABILITIES OF A MAINTAINABLE COMPUTER NETWORK

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Journal of Systems Science and Systems Engineering 2011年第2期20卷 229-248页

作者： Yi-Kuei lin ping-Chen CHANG Department of Industrial Management National Taiwan University of Science & Technology Taipei 106 Taiwan China

This paper presents an algorithm to evaluate estimated and exact system reliabilities for a computer network in the cloud computing *** the quality of service（QOS） viewpoint,the computer network should be maintained when falling to a specific state such that it cannot afford enough capacity to satisfy ***,the transmission time should be concerned as ***,the data can be sent through several disjoint minimal paths simultaneously to shorten the transmission *** the maintenance budget B and time constraint T,we evaluate the system reliability that d units of data can be sent from the cloud to the client through multiple *** procedures are integrated in the proposed algorithm-an estimation procedure for estimated system reliability and an adjusting procedure utilizing the branch-and-bound approach for exact system ***,the estimated system reliability with lower bound and upper bound,and exact system reliability are computed by applying the recursive sum of disjoint products（RSDP） algorithm.

关键词： System reliability maintenance network flows branch-and-bound approach estimation

A Numerical Study of Multiple Solutions for Laminar Flows in a Porous and Moving Channel

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Numerical Mathematics(Theory,Methods and Applications) 2018年第1期11卷 74-91页

作者： Fen Wang ping lin lin Li Yongyue Jiang Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science School of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing 100083China Division of Mathematics University of DundeeDundee DD14HNUnited Kingdom Beijing Time Technologies Co. Ltd.Kaituo Road 17BeijingChina

In this paper,based on the finite element formulation,we focus on multiple solutions and their evolution with time for a laminar flow in a permeable channel with expanding or contracting *** Newtonian fluid and micropolar fluid are *** the Newtonian fluid model,we find that the profile of the unique solution in the case of injection remains the same for long time,which indicates that the solution may be *** the other hand,in the case of large suction,the profile of multiple solutions changes in time,which suggests that the multiple solutions may be *** behaviors and conclusions are observed for the micropolar fluid model under different boundary parameters.

关键词： Newtonian fluid micropolar fluid multiple solutions finite element method bvp4c

Effects of cellulose nanocrystals on the acid resistance of cementitious composites

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International Journal of Minerals,Metallurgy and Materials 2021年第11期28卷 1745-1758页

作者： lin-ping Wu Guang-ping Huang Chao-shi Hu Wei Victor Liu School of Mining and Petroleum Engineering University of AlbertaEdmontonAlberta T6G 2E3Canada Utility Planning&Design EPCOR Utilities IncEdmontonAB T5M 3B8Canada

Acid mine drainage presents an important threat to cementitious *** study is aimed at investigating the effect of cellulose nanocrystals(CNCs)on the acid resistance of cementitious *** were added to mortar mixtures as additives at cement volume ratios of 0.2vol%,0.4vol%,1.0vol%,and 1.5vol%.After 28 d of standard curing,the samples were immersed in a sulfuric acid with a pH value of 2 for 75 *** unconfined compressive strength(UCS)test,the density,water absorption,void volume test,and thermogravimetric analysis were carried out to investigate the properties of CNC mixtures before sulfuric acid *** was found that the addition of CNC reduced the volume of permeable voids and increased the hydration degree and mechanical strength of the *** in mass and length were monitored during immersion to evaluate the acid resistance of *** mixture with 0.4vol%CNC showed a reduced mass change and length change indicating its improved acid resistance.

关键词： acid resistance acid mine drainage cementitious composites cellulose nanocrystals

RNA methylation into m^(1)A era:a new regulation over T-cell function

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Signal Transduction and Targeted Therapy 2023年第3期8卷 881-882页

作者： ping lin Guoping Li Min Wu Integrative Science Center of Germplasm Creation in Western China(Chongqing)Science City&Southwest University Biological Science Research CenterSouthwest University400715ChongqingChina Wound Trauma Medical Center State Key Laboratory of TraumaBurns and Combined InjuryDaping HospitalArmy Medical University400042ChongqingChina Wenzhou Institute University of Chinese Academy of SciencesWenzhouZhejiang325000China Laboratory of Allergy and Precision Medicine Chengdu Institute of Respiratory HealthThe Third People’s Hospital of Chengdu610014ChengduSichuanChina

In a recent paper published in Nature Immunology,Liu et *** that the“writers”TRMT6/TRMT61A complex mediated transfer RNA(tRNA)m1A modification,facilitating competent translation of certain proteins fundamental to T-cell proliferation in an instant upon activation,1 demonstrating that tRNA m^(1)A methylation as a crucial translational checkpoint paves the way for novel immunotherapies to treat T-cell-related inflammation or cancer via manipulating the m^(1)A machinery.

关键词： al. inflammation Immunology

Fossicking for microbial defense system:novel antiviral immunity

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Signal Transduction and Targeted Therapy 2020年第1期5卷 193-195页

作者： ping lin Qun Wu Min Wu Department of Biomedical Sciences School of Medicine and Health SciencesUniversity of North DakotaGrand ForksND 58203USA Wound Trauma Medical Center State Key Laboratory of TraumaBurns and Combined InjuryDaping HospitalArmy Medical UniversityChongqing 400042China Department of Pediatrics Ruijin Hospital affiliated to Shanghai Jiao Tong University School of Medicine ShanghaiShanghaiChina

A recent paper in Science by Gao et *** a comprehensive comparative genomics approach to identify new antiviral systems in prokaryotes for combating invading phages.1 These defense systems manifest a variety of host defense mechanisms by utilizing enzymatic activities including reverse transcriptases,adenosine deaminases of RNA editing,and retroms(Fig.1).Some of these antiviral systems not only enrich our understanding the phage-bacterial interaction but also represent a versatile,powerful tool for biomedical research and biotechnological applications.

关键词： immunity utilizing versatile

CRISPR base editor treats premature-aging syndrome

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Signal Transduction and Targeted Therapy 2021年第5期6卷 1410-1412页

作者： ping lin Jianxin Jiang Min Wu Wound Trauma Medical Center State Key Laboratory of TraumaBurns and Combined InjuryDaping HospitalArmy Medical UniversityChongqingChina Department of Biomedical Sciences School of Medicine and Health SciencesUniversity of North DakotaGrand ForksNDUSA

A recent paper published in Nature by Koblan et *** the use of CRISPR-mediated adenine base editor(ABE)to repair mutations of the Hutchinson-Gilford progeria syndrome(HGPS or progeria),attenuate symptoms,and extend lifespan of mice(Fig.1),representing a major advance in design of treatments for human accelerated-ageing disorders and potentially other genetic diseases.

关键词： CRISPR editor base

Extension of Subjective Logic for Time-Related Trust

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Wuhan University Journal of Natural Sciences 2005年第1期10卷 56-60页

作者： HUANGChen-lin HUHua-ping SchoolofComputer NationalUniversityofDefenseTechnologyChangsha410073HunanChina

To describe the dynamic propcrty of trust relationship, wt propose atime-related trust model and extend Joang's subjective logic to fit for time-related trust *** extension includes prepositional conjunction, disjunction and negation for traditional logic anddiscounting and consensus operators that are evidential operators specially designed for thepropagation and computation of trust relationships. With the extension of subjective logic fortime-related trust, our time-related trust modelis suitable to model the dynamic trust relationshipin practice. Finally an example of reputation assessment is offered to demonstrate the usage of ourtrust model.

关键词： trust model lime-related trust relationship time-related trust model subjective logic

Production of laccase by Coriolus versicolor and its application in decolorization of dyestuffs: (Ⅱ) Decolorization of dyes by laccase containing fermentation broth with or without self-immobilized mycelia

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Journal of Environmental Sciences 2003年第1期15卷 5-8页

作者： lin Jian ping LIAN Wei XIA Li ming CEN Pei lin Department of Chemical Engineering and Bioengineering Zhejiang UniversityHangzhou 310027China.

The capability of decolorization for commercial dyes by Coriolus versicolor fermentation broth containing laccase with or without immobilized mycelium was evaluated. With cell free fermentation broth containing laccase, high decolorization ratio was achieved for acid orange 7, but not for the other dyes concerned. The immobilized mycelium was proved to be more efficient than the cell free system. All the four dyestuffs studied were found being decolourized with certain extent by immobilized mycelium. The repeated batch decolorization was carried out with satisfactory results. The experimental data showed that the continuous decolorization of wastewater from a printing and dyeing industry was possible by using the self immobilized C. Versicolor.

关键词： laccase textile dyes immobilized mycelium decolorization Coriolus versicolor

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