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International Journal of Minerals,Metallurgy and Materials 2012年第8期19卷 762-767页

作者： shun-hua xiao Wei-fen Jiang Co11ege of Chemistry and Bioengineering Key Laboratory of New Processing Technology for Nonferrous Metals and Materials (Ministry of Education) Guilin University of Technology Guilin 541004 China Department of Mathematics and Information Science North China Institute of Water Conservancy and Hydroelectric Power Zhengzhou 450011 China

Barium strontium titanate （Ba0.5Sr0.5TiO3, BST）/silicon nanoporous pillar array （Si-NPA） thin films were prepared by a spin-coating/annealing technique based on Si-NPA with micro/nano-structure. Both the isomer conversion of acetylacetone and the network structure combined by enol and Ti-alkoxide facilitate the formation of the BST sol and the subsequent crystallization. Before the perovskite BST begins to form, the intermediate phase （Ba, Sr）Ti2OsCO3 is found. The boundary between BST and Si-NPA is of clarity and little interface diffusion, disclosing that Si-NPA is an ideal template substrate in the preparation of multifunctional composite films.

关键词： barium strontium titanate silicon nanoporous materials composite films sol-gel process

Real-time process control of powder bed fusion by monitoring dynamic temperature field

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Advances in Manufacturing 2020年第3期8卷 380-391页

作者： xiao-Kang Huang xiao-Yong Tian Qi Zhong shun-Wen he Chun-Bao Huo Yi Cao Zhi-Qiang Tong Di-Chen Li State Key Laboratory of Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an710049People’s Republic of China

This study aims to optimize the uniformity of the temperature field during sintering to improve part performance.A temperature-field monitoring system is established based on an infrared thermal imager and the temperature field data obtained during the sintering of a part can be measured in real *** relationship among the sintering temperature field,sintering process parameters,and part performance is established ***,a temperature field monitoring and analysis system is constructed,and various sintering temperature-field control strategies are established for various part ***,a dynamic control strategy for controlling the temperature field during sintering is proposed,experimentally validated,and fully integrated into a developed powder bed fusion(PBF)*** eight-shaped standard parts,the range of sintering temperature field is optimized from 44.1℃to 19.7℃,whereas the tensile strength of the parts increased by 15.4%.For large-size H parts,localized over burning is eliminated and the final quality of the part is *** strategy is critical for the optimization of the PBF process for large-sized parts,in particular in the large-sized die manufacturing industry,which offers promise in the optimization of part performance.

关键词： Powder bed fusion(PBF) Sintering temperature field Monitoring system Infrared thermal imager

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做好基础医学课程教学秘书的几点体会

山西医科大学学报（基础医学教育版） 2004年第5期6卷 530-532页

作者：汪克建廖晓岗王顺和邵洁许舸罗子国重庆医科大学电子显微镜室重庆400016 重庆医科大学基础医学院

结合工作实际,从热爱教学工作、加强团结协作与合理安排教学、重视教学信息收集、做好考试工作、积极参与教学改革等方面,讨论如何做好高等医学院校有关基础医学教学的教研室教学秘书一职.

关键词：课程教学教学信息教研室教学秘书教学工作积极参与教学改革基础医学教学合理安排

Fault detection and isolation for linear parameter-varying systems with time-delays: a geometric approach

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Science China(Information Sciences) 2023年第7期66卷 162-176页

作者： Zhao ZHANG xiao he Department of Automation Tsinghua University

Fault detection and isolation(FDI) problems for linear parameter-varying(LPV) systems with state time-delays are studied in this paper. By defining the concept of unobservability subspace and designing its calculation algorithm, the geometric approach is introduced to the time-delay LPV systems. Utilizing Wirtinger-based integral inequality, we obtain a sufficient condition to solve the so-called H∞-based residual generation problem for the LPV systems. In this paper, we consider two cases: the time delay is known and the time delay is unknown but its estimated value can be obtained. Corresponding observers are proposed for both cases based on the geometric approach and H∞ techniques. Lyapunov-Krasovskii functional is utilized to handle the time-delays and Wirtinger’s inequality is employed to reduce conservatism. Numerical examples are presented to demonstrate the effectiveness of the proposed approach.

关键词： time-delay LPV systems geometric approach fault detection and isolation exact-memory rough-memory

A Crisis with a Special Scaling Behavior

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Chinese Physics Letters 1999年第3期16卷 167-168页

作者： DING xiao-ling WU shun-guang YIN Yue-cai he Da-ren Department of Physics Teachers CollegeYangzhou UniversityYangzhou 225002 Institute of Low Energy Nuclear Physics Beijing Normal UniversityBeijing 100875 Department of Physics Shenyang Teachers CollegeShenyang 110031 CCAST(World Laboratory) P.O.Box 8730Beijing 100080

A kind of crisis with special scaling properties has been observed in a discontinuous *** crisis happens via a collision between a discontinuity of the mapping function and an unstable periodic orbit locating on the basin boundary of the chaotic *** scaling property of the crisis is∝∈-1.8,whereand∈stand for the average characteristic time and the control parameter value crossing the critical point,respectively.

关键词： scaling locating chaotic

Radiation-induced Bystander Effect in Immune Response

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Biomedical and Environmental Sciences 2004年第1期17卷 40-46页

作者： SHU-ZheNGLIU shun-ZIJIN xiao-DONGLIU DepartmentofRadiationBiology JilinUniversitySchoolofPublicHealth8XinminStreetChangchun130021JilinChina

Objective Since most reports on bystander effect have been only concerned with radiation-induced damage, the present paper aimed at disclosing whether low dose radiation could induce a stimulatory or beneficial bystander effect. Methods A co-culture system containing irradiated antigen presenting cells (J774A.1) and unirradiated T lymphocytes (EL-4) was established to observe the effect of J774A.1 cells exposed to both low and high doses of X-rays on the unirradiated EL-4 cells. Incorporation of 3H-TdR was used to assess the proliferation of the EL-4 cells, expression of CD80/86 and CD48 on J774A.1 cells was measured with immunohistochemistry and flow cytometry, respectively. NO release from J774A.1 cells was estimated with nitrate reduction method. Results Low dose-irradiated J774A.1 cells could stimulate the proliferation of the unirradiated EL-4 cells while the high dose-irradiated J774A.1 cells exerted an inhibitory effect on the proliferation of the unirradiated EL-4 cells. Preliminary mechanistic studies illustrated that the differential changes in CD48 expression and NO production by the irradiated J774A.1 cells after high and low dose radiation might be important factors underlying the differential bystander effect elicited by different doses of radiation. Conclusion Stimulatory bystander effect can be induced in immune cells by low dose radiation.

关键词： Bystander effect Radiation Antigen presenting cells T lymphocytes CD48 NO

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非静水压作用下石膏电学性质的理论研究

原子与分子物理学报 2025年第6期42卷 129-135页

作者：周梅吴雷罗小松何宗润贵州民族大学物理与机电工程学院贵阳550025 重庆大学能源与动力工程学院重庆400044

地球内部广泛存在着差应力,这些外在因素的存在影响着矿物的性质,而矿物的电学性质与结构相变息息相关.为了更加了解地球内部结构与动力学过程,采用第一性原理方法,在等效平衡压0~10 GPa范围内计算地球内部浅层矿物石膏在静水压和非静... 详细信息

地球内部广泛存在着差应力,这些外在因素的存在影响着矿物的性质,而矿物的电学性质与结构相变息息相关.为了更加了解地球内部结构与动力学过程,采用第一性原理方法,在等效平衡压0~10 GPa范围内计算地球内部浅层矿物石膏在静水压和非静水压条件下的电学性质.计算结果表明:静水压和非静水压条件下无水石膏的密度和带隙变化基本一致,但二水石膏的密度和带隙在非静水压为6 GPa附近发生突变,这可能是由于非静水压环境使晶体结构更容易发生畸变,更有利于水分子氢键网络的重新排列和CaSO_(4)层间结构的塌缩,因此非静水压下可能更加有利于二水石膏在高温高压下的脱水反应.这对理解地幔中矿物的脱水和储水产生重大的影响,为理解地幔中矿物的脱氢和储水提供理论依据.

关键词：差应力石膏电学性质第一性原理

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Target location with signal fitting and sub-aperture tracking for airborne multi-channel radar

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Journal of Systems Engineering and Electronics 2010年第5期21卷 752-758页

作者： Zhiwei Yang Guisheng Liao shun he Cao Zeng National Laboratory of Radar Signal Processing Xidian University Xi'an 710071 E R. China Communication and Information Engineering College Xi'an University of Science and Technology Xi'an 710054 E R. China

The location of a moving target based on signal fitting and sub-aperture tracking from an airborne multi-channel radar is dealt *** proposed approach is applied in two steps：first,the ambiguous slant-range velocity is derived with a modified single-snapshot multiple direction of arrival estimation method,and second,the unambiguous slant-range velocity is found using a track-based *** prominent advantage of the proposed approach is that the unambiguous slant-range velocity can be very ***,the first stage is carried out at the determinate range-Doppler test cell by azimuth searching for fitting best to the moving target signal,therefore,the location performance would not be sacrificed in order to suppress clutter and/or *** effectiveness and efficiency of the proposed method are validated with a set of airborne experimental data.

关键词： space-time adaptive processing(STAP) along track interferometry(ATI) ground moving target indication(GMTI).

Exploring multiple equilibria for symmetric 2×2 CES/LES pure exchange economies

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Applied Mathematics(A Journal of Chinese Universities) 2010年第2期25卷 137-154页

作者： SHI xiao-jun ZHANG shun-ming School of Economics and Management Beijing University of Aeronautics and Astronautics Beijing 100191 China China Financial Policy Research Center Renmin University of China Beijing 100872 China

This paper explores the existence of 3 equilibria for symmetric 2-individual 2-good CES/LES pure exchange economies. For certain parameterizations in the economies, we show analytically that there are no more than 3 equilibria. We generalize our analytical results of existence of 3 equilibria for a wide range of parameterizations. Then we provide examples of 3 equilibria and parameter zones of 3 equilibria for CES and CES/LES economies.

关键词： Multiple equilibria Cobb-Douglas utility function CES/LES utility function.

The Estimates of All Homogeneous Expansions for a Subclass of Biholomorphic Mappings Which Have Parametric Representation in Several Complex Variables

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Acta Mathematica Sinica,English Series 2017年第2期33卷 287-300页

作者： xiao Song LIU Tai shun LIU School of Mathematics and Statistics Lingnan Normal University Department of Mathematics Huzhou Teachers College

In this paper, we obtain the estimates of all homogeneous expansions for a subclass of bi- holomorphic mappings which have parametric representation on the unit ball of complex Banach spaces. Meanwhile, we also establish the estimates of all homogeneous expansions for the above generalized mappings on the unit polydisk in Cn. Especially, the above estimates are only sharp for biholomorphic starlike mappings and starlike mappings of order α under restricted conditions. Our derived results generalize many known results.

关键词： Estimate of homogeneous expansion starlike mapping starlike mapping of order α quasi-convex mapping quasi-convex mapping of type A parametric representation