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Acta Mathematica Scientia 2021年第1期41卷 319-336页

作者： Hakho hong Institute of Mathematics State Academy of SciencesPyongyangD P R Korea

In this paper,we consider an inflow problem for the non-isentropic Navier-StokesPoisson system in a half line(0,∞).For the general gas including ideal polytropic gas,we first give some results for the existence of the stationary solution with the aid of center manifold theory on a 4×4 system of autonomous ordinary differential *** also show the time asymptotic stability of the stationary solutions with small strength under smallness assumptions on the initial perturbations by using an elementary energy method.

关键词： Navier-Stokes-Poisson system inflow problem stationary solution existence stability

understanding “software-defined” from an OS perspective: technical challenges and research issues

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Science China(Information Sciences) 2017年第12期60卷 271-273页

作者： hong MEI Beijing Institute of Technology Key Laboratory on High-Confidence Software Technologies(MOE) Peking University

What is"software-defined"?Software-defined has become one of the hottest buzzwords in the information technology(IT)*** is used to describe a family of technologies,including software-defined networking(SDN),softwaredefined storage(SDS),and software-defined data centers(SDDC).These are part of a broader trend that is referred to as software-defined everything

关键词： OS from an OS perspective understanding software-defined technical challenges and research issues

约束非线性系统的一个准无限时域预测控制方案(英文)

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控制理论与应用 1999年第3期16卷 313-319页

作者：陈虹 frank.,A 斯图加特大学系统动力学与控制工程研究所

提出一个具有准无限预测时域的模型预测控制方案．该方案可用于输入和状态约束非线性系统的控制．用优化柔性状态约束条件代替了硬性状态约束，以避免优化问题的不可解．开环优化问题含有附加的终端代价项和终端约束条件，这样预测时域... 详细信息

提出一个具有准无限预测时域的模型预测控制方案．该方案可用于输入和状态约束非线性系统的控制．用优化柔性状态约束条件代替了硬性状态约束，以避免优化问题的不可解．开环优化问题含有附加的终端代价项和终端约束条件，这样预测时域延伸至准无限，而需在线优化获得的控制函数仅为有限时域．如果在最初时刻优化问题有解，则闭环系统具有保证稳定性．

关键词：模型预测控制约束非线性系统预测控制

Detection of DNA methylation by hyperbranched rolling circle amplification and DNA microarray

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Chinese Chemical Letters 2014年第12期25卷 1559-1564页

作者： hong Zhao Zu-hong Lu Mianyang Normal university State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast University

Aberrant DNA methylation of CpG sites has been confirmed to be closely associated with *** on the hyperbranched rolling circle amplification（HRCA） and microarray techniques,a new method for qualitative detection of methylation was *** the present study,padlock probes hybridize the sample DNA at the methylation site to form a probe-DNA complex which is ligated and digested simultaneously by methylation specific *** at the methylated CpG site is the padlock probe ligated successfully to form a circle template for the HRCA *** the method of 3-dimensional polyacrylamide gel-based microarray,the HRCA product will be immobilized on the slide to form a DNA microarray,which can universally hybridize the Cy3-labeled oligonucleotide probe to detect the methylation status of CpG *** control the false positive signals,DNA ligase and temperature of ligation/digestion are *** status of four CpG sites located in P15,Ecadherin,hMLH1 and MGMT genes were analyzed successfully with this method and all the results were compatible with that of methylation-specific *** research proves that this method is simple and inexpensive,and could be applied as a high-throughput tool to qualitatively determine the methylation status of CpG sites.

关键词： Methylation Padlock probe HRCA Microarray

An extended stress-based method for orientation angle optimization of laminated composite structures

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Acta Mechanica Sinica 2011年第6期27卷 977-985页

作者： Jin Zhang Wei-hong Zhang Ji-hong Zhu Engineering Simulation and Aerospace Computing （ESAC） The Key Laboratory of Contemporary Design ＆ Integrated Manufacturing Technology Northwestern Polytechnical University 710072 Xi＇ an China

Orientation optimization plays an important role in the lay-up design of composite *** orientation optimization methods face the main problem of huge number of design ***,a patch concept is proposed to reduce the number of design ***,the traditional stress-based method can not deal with patch orientation optimization of composite *** this paper,we propose an extended stress-based method to deal with such *** considered problems are to minimize the mean compliance under multiple load cases or to maximize the eigenvalues of a composite *** numerical examples are solved to demonstrate the efficiency of the new *** is shown that the new method has the ability to deal with constraints on orientation angle,such as symmetric,antisymmetric and discrete orientation angle *** iteration is less time-consuming because no sensitivity analysis is needed and a quick convergence rate can be achieved.

关键词： Structural optimization Composites Laminates Orientation angle optimization

R-matrix for the 8-Dimensional Spin Representation of Uq(so7)

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Acta Mathematica Sinica,English Series 2024年第2期40卷 485-497页

作者： hong Mei HU Nai hong HU School of Mathematical Sciences Suzhou University of Science and TechnologySuzhou 215009P.R.China School of Mathematical Sciences MOE Key Laboratory of Mathematics and Engineering Applications&Shanghai Key Laboratory of PMMPEast China Normal UniversityShanghai 200241P.R.China

The purpose of the paper is to describe the solution to the quantum Yang-Baxter equation associated with the 8-dimensional spin representation Tsp of Uq(so7).The self-duality of Tsp and the symmetry of the corresponding braiding matrix are ***,the minimal polynomial of the braiding R-matrix of Tsp is presented explicitly in an ingenious method by taking advantage of nice features of the spin representation Tsp.

关键词： Braiding R-matrix spin module minimal polynomial

Experimental Investigation of Vibration Response of A Free-Hanging Flexible Riser Induced by Internal Gas-Liquid Slug Flow

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China Ocean Engineering 2018年第6期32卷 633-645页

作者： ZHU hong-jun ZHAO hong-lei GAO Yue State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University

The vibration response of a free-hanging flexible riser induced by internal gas-liquid slug flow was studied experimentally in a small-diameter tube model based on Froude number criterion. The flow regime in a curved riser model and the response displacements of the riser were simultaneously recorded by high speed cameras. The gas superficial velocity ranges from 0.1 m/s to 0.6 m/s while the liquid superficial velocity from 0.06 m/s to 0.3 m/*** slugging type 3, unstable oscillation flow and relatively stable slug flow were observed in the considered flow rates. Severe slugging type 3 characterized by premature gas penetration occurs at relatively low flow rates. Both the cycle time and slug length become shorter as the gas flow rate increases. The pressure at the riser base undergoes a longer period and larger amplitude of fluctuation as compared with the other two flow regimes. Additionally, severe slugging leads to the most vigorous in-plane vibration. However, the responses in the vertical and horizontal directions are not synchronized. The vertical vibration is dominated by the second mode while the horizontal vibration is dominated by the first mode. Similar to the vortex-induced vibration, three branches are identified as initial branch, build-up branch and descending branch for the response versus the mixture velocity of gas-liquid flow.

关键词： gas-liquid two-phase flow severe slugging liquid slug flexible riser flow-induced vibration

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新型混编支架的制备与径向支撑力学行为

中国组织工程研究 2025年第16期29卷 3440-3448页

作者：薛广明木合塔尔·克力木李洪新疆大学机械工程学院新疆维吾尔自治区乌鲁木齐市830047

背景:编织支架因良好的柔顺性被广泛应用于狭窄动脉的治疗,但在提供足够的径向支撑性能方面存在明显局限。目的:针对单一材料制成的编织支架存在径向支撑力不足的问题,采用不同力学参数的生物可降解材料混合编织支架,探究影响混编支架... 详细信息

背景:编织支架因良好的柔顺性被广泛应用于狭窄动脉的治疗,但在提供足够的径向支撑性能方面存在明显局限。目的:针对单一材料制成的编织支架存在径向支撑力不足的问题,采用不同力学参数的生物可降解材料混合编织支架,探究影响混编支架径向力学性能的影响因素。方法:在镁合金支架中引入铁合金纱线,采用有限元分析法对不同编织参数的混编支架进行参数化分析,通过与0.18 mm直径镁合金纱线制备的普通支架进行对比,评估其径向支撑力、径向回弹率和扩张不均匀性。结果与结论:①当铁合金纱线直径为0.18 mm和0.14 mm时,随着铁合金纱线数量的增多,混编支架的径向支撑力增加;此时,尽管直径0.14 mm铁合金纱线提供的径向支撑力小于同数量的0.18 mm铁合金纱线,但增加细铁合金纱线的数量可以达到与较粗铁合金纱线混编支架相媲美的径向支撑力。当铁合金纱丝直径为0.10 mm时,随着铁合金纱线数量的增加,混编支架的径向支撑力降低。②增大编织角度,混编支架的径向支撑力降低,但其径向回弹率和狗骨率得到了改善。通过降低编织角可以改善小直径铁合金纱线造成的支架径向支撑力不足。③结果显示,在镁合金支架中引入铁合金纱线,可以实现在不增加纱线直径的情况下精确地调整支架的径向力学性能,这不仅克服了单一材料支架的局限性,也为多材料支架的设计提供了新思路。

关键词：编织支架生物可降解材料镁合金铁合金支架结构径向支撑性能狗骨率有限元分析

Evolution of Annealing Twins and Recrystallization Texture in Thin-Walled Copper Tube During Heat Treatment

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Acta Metallurgica Sinica(English Letters) 2020年第12期33卷 1618-1626页

作者： Song-Wei Wang hong-Wu Song Yan Chen Shi-hong Zhang Hai-hong Li Institute of Metal Research Chinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 100049China School of Nuclear Equipment and Nuclear Engineering Yantai UniversityYantai 264005China

Thin-walled copper tubes are usually produced by multi-pass float-plug drawing *** general,the annealing treatment subsequently is necessary to release the stored energy and adjusts the *** this study,an investigation on the evolution of annealing twins as well as textures in the thin-walled(Φ6 mm×0.3 mm)copper tube underwent holding time-free heat treatment was *** backscattered diffraction analysis reveals that a large number ofΣ3 boundaries(600twin relationship)are produced at the early stage of heat treatment,which is due to the lower boundary *** the recrystallization proceeding,the migration rate of grain boundaries decreases on account of the grain growth;meanwhile,the uniqueΣ9 boundaries(38.9°relationship)are formed due to the interaction of theΣ3 *** a result,the number fractions ofΣ3 boundaries and high-angle grain boundaries decrease *** the grain growth stage,a strong recrystallization texture was formed due to the fact that the grains of Goss orientation have a growth advantage over the *** a result,the initial copper texture was transferred into the Goss texture in domination.

关键词： Copper tube Annealing twin Heat treatment Electron backscattered diffraction(EBSD)analysis Recrystallization texture

Development of samarium–cobalt rare earth permanent magnetic materials

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Rare Metals 2014年第6期33卷 633-640页

作者： Jian-hong Yi Faculty of Materials Science and Engineering Kunming University of Science and Technology

Samarium–cobalt rare-earth（Sm–Co-RE） permanent magnetic materials with large magnetic energy product, high coercive force, high Curie temperature, good thermal stability, and corrosion resistance, have wide potential applications in aerospace, microwave communications, instrumentation, electrical engineering, magnetic machinery, etc. In this paper, the development of Sm–CoRE permanent magnetic materials in the following aspects in recent years was summarized： Sm–Co-RE permanent magnets with high application temperatures, positive temperature coefficients of coercive force, zero temperature coefficients of residual magnetization, high resistance rate,high mechanical property, and nanocrystallization.

关键词： Samarium–cobalt rare-earth permanent magnet Magnetic Temperature coefficient Resistivity