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京津冀建设世界级集成电路产业集群的路径探究

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科技智囊 2025年第1期 51-61页

作者：李诚张丽丽刘沅东北京市科学技术研究院北京100089

[研究目的]为推进京津冀地区集成电路产业协同发展,形成新的增长极,本文对京津冀建设世界级集成电路产业集群的路径进行分析研究。[研究方法]以京津冀地区集成电路产业为研究对象,通过政策梳理、数据分析以及实地调研和考察,捋清其发展... 详细信息

[研究目的]为推进京津冀地区集成电路产业协同发展,形成新的增长极,本文对京津冀建设世界级集成电路产业集群的路径进行分析研究。[研究方法]以京津冀地区集成电路产业为研究对象,通过政策梳理、数据分析以及实地调研和考察,捋清其发展现状与主要特征,并与国内领先区域进行系统性比较,分析京津冀集成电路产业集群建设中存在的难点和关键影响因素,在此基础上为加速京津冀世界级集成电路产业集群建设给出建议。[研究结论]京津冀地区集成电路产业规模大,产业布局较全面,设计占主导,制造与封装测试发展迅速,但仍存在产业链失衡、三地联动不足、人才专项政策缺失等问题。这制约了京津冀世界级集成电路产业集群的建设。此外,集成电路产业协同性、相关政策体系、人才队伍建设以及应用场景等也是影响京津冀世界级集成电路产业集群建设的关键因素。要加快这一建设,应当从以下路径着手:以发展新质生产力为动力,优化京津冀集成电路产业分工格局;充分发挥京津冀应用市场优势,以应用端为牵引,促进产业的协同发展;加快京津冀产学研一体化建设,形成京津冀集成电路产业协同创新平台,积极推动京津冀地区建设世界级集成电路产业集群。

关键词：京津冀协同发展集成电路产业产业集群新质生产力

Engineering the atomic interface of porous ceria nanorod with single palladium atoms for hydrodehalogenation reaction

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Nano Research 2022年第2期15卷 1338-1346页

作者： Zhijun Li Mingyang zhang lili zhang Xiuli Dong Leipeng Leng JHugh Horton Jun Wang Joint International Research Laboratory of Advanced Chemical Catalytic Materials&Surface Science College of Chemistry and Chemical EngineeringNortheast Petroleum UniversityDaqing 163318China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Department of Chemistry Queens UniversityKingstonK7L 3N6Canada

Tuning the electronic properties of single atom catalysts(SACs)between the central metal and the neighboring surface atoms has emerged as an efficient strategy to boost catalytic efficiency and metal *** we describe a simple and efficient approach to create atomically dispersed palladium atoms supported over defect-containing porous ceria nanorod containing palladium up to 0.26 wt.%.The existence of singly dispersed palladium atoms is confirmed by spherical aberration correction electron microscopy and extended X-ray absorption fine structure *** catalyst shows excellent efficiency in hydrodehalogenation reactions at low H2 pressure under mild conditions,along with satisfactory recyclability and *** functional theory(DFT)calculations reveal that the high activity stems from the spatial isolation of palladium atoms and the modified electronic structure of palladium confined in defect-containing ceria *** work may lay the foundation for the facile creation of single atom catalysts within the synthetic community and shed light on the possibility for scale-up production.

关键词： heterogeneous catalysis palladium single atom catalyst porous ceria nanorod hydrodehalogenation catalytic activity

Improved Design of Architecture of the Battlefield Situation Comprehensive Display System

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Wuhan University Journal of Natural Sciences 2023年第4期28卷 309-316页

作者： LIU Yu zhang lili LI Gangqiang Teaching and Research Department of Unit 91976 PLAGuangzhou 510430GuangdongChina

The traditional chimney software architecture design,which is based on the application object,scale and equipment,is difficult to meet the urgent need of multi-resolution,multi-viewpoint,two-dimensional and three-dimensional consistent battlefield situation comprehensive *** to the idea of ***'s general operational diagram,the architecture of the current battlefield situation integrated display system is upgraded and *** at the problems of information splitting and real-time undifferentiated access of multi-domain heterogeneous data,technical means such as spatial analysis and multi-source data integration are put forward,and the problems of fast loading and visualization of 3D models of the large battlefield space are solved by designing force clustering and motion trajectory smoothing *** method improves the service ability and the level of the battlefield situation comprehensive display system,and has a broad arrange of application.

关键词： common operational picture(COP) architecture of battlefield situation visualization computer model

Leakage of nuclear material powder from pressure container through a small orifice

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Particuology 2014年第3期12卷 117-123页

作者： Longbo Liu Yanmin Wu Yongyang Su Hanbing Tang Zhihong zhang Ping Huang lili zhang Lixing zhang Northwest Institute of Nuclear Technology

Because of the radioactivity and toxic nature of nuclear materials, their containment within oxide matrices, encased in sealed containers, has been proposed as a suitable means for storage and transportation. However, container failures because of cracks or small orifices present a major leakage risk for nuclear materials, consequently posing a significant hazard to the environment and human beings. In this study, terbium oxide powder was used as a nuclear material representative to examine the leakage of nuclear material powder through orifices located at the base of a pressure container. The dependence of the orifice diameter, the powder layer thickness, and the internal pressure of the container on the leakage mechanism and amount was examined. A simplified model correlating the dependence of the above-mentioned parameters to determine the utmost leakage amount was also developed based on the present results. The leakage of the nuclear material powder was assessed by measuring its concentration using an optical particle counter. The diameter of the orifice determined the powder leakage mechanism, which in turn influenced the amount of leakage produced. Comparison studies showed that unlike the changes in the differential pressure, the volume of the container has little effect on the leakage amount. Under sufficiently high internal pressures, the oxide powder can be released as a fine aerosol. The work is not only crucial from the nuclear safety aspect, but is also beneficial for the safe application of powder and nanoparticles.

关键词： Nuclear materials Powder Leakage Risk assessment

The roles of thyroid hormone receptor and T3 in metamorphosis of Haliotis diversicolor

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Journal of Oceanology and Limnology 2019年第2期37卷 745-758页

作者： WANG Guodong zhang lili XU Jianbo YIN Cheng zhang Ziping WANG Yilei Key Laboratory of Healthy Mariculture for the East China Sea Ministry of Agriculture Fisheries College Jimei University Xiamen 361021 China College of Animal Science Fujian Agriculture and Forestry University Fuzhou 350002 China

Thyroid hormone is a kind of important hormone which regulates metamorphosis. Its role is well described in amphibian metamorphosis. Thyroid hormones (T3 and T4) have also been demonstrated to play a role in metamorphosis of marine invertebrates. However, the mechanism of thyroid hormone in metamorphosis of marine invertebrates remains unknown. A homolog of vertebrate thyroid hormone receptor (TR) was cloned and identified in abalone Haliotis diversicolor and was named HdTR . The mRNA expressions of HdTR , thyroid peroxidase ( TPO ), thyroid peroxidase 1 ( TPO1 ), idothyronine deiodinase Ⅲ( IDⅢ) and integrin alpha-V ( ITGAV ) had significant diff erence in metamorphosis of H . diversicolor . Metamorphosis rate and mortality rate were significantly diff erent in HdTR RNAi experiment and T3 inducing experiment. In RNAi experiment, ITGAV and CCND1 (cyclin D1) expression of dsRNA HdTR exposing group were significantly lower than those of blank control and negative control. But CTNNB (catenin beta) expression of dsRNA HdTR exposing group was higher than that those of blank control and negative control. ERK (extracellular signal regulated kinases) and PI3K (phosphoinositide-3-kinase) had no significant diff erence in RNAi experiment. Moreover, ITGAV of 1 μmol/L T3 group was significantly lower than that of 0 μmol/L T3 group, PI3K expression of 10 μmol/L T3 group was higher than that of 0 μmol/L T3 group, and the other genes expression had no significant diff erence in T3 inducing experiment. The data of genes expression suggested that CCND1 might be an eff ector gene of TR genomic action, while CTNNB might be regulated by unliganded TR. CCND1 and CTNNB may be involved in cell proliferation of metamorphosis. T3 might regulate the expression level of PI3K via nongenomic way. These results shed light on the mechanism of thyroid hormone in abalone metamorphosis.

关键词： thyroid hormone receptor thyroid hormone (TH)(T3) abalone metamorphosis

Microstructure evolution of immiscible alloy solidified under the effect of composite electric and magnetic fields

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Journal of Materials Science & Technology 2023年第31期162卷 247-259页

作者： Yanqiang Li Hongxiang Jiang Hao Sun lili zhang Jie He Jiuzhou Zhao Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China

Solidification experiments were performed with Lead-Aluminum immiscible alloy under the effect of composite electric and magnetic fields(CEMFs).The results demonstrate that CEMFs not only decrease the size of minority phase particles(MPPs)but also promote a more uniform distribution of the MPPs.A theoretical model was built to describe the microstructure evolution during cooling the immiscible *** solidification process of Pb-0.4 wt.%Al alloy under the effect of the CEMFs was *** numerical results are well consistent with the experimental *** results demonstrate that CEMFs affect the solidification process through changing melt convection and the nucleation behavior of minority phase droplets(MPDs).On one hand,the CEMFs can inhibit the convection and lead to the homogeneous distribution of MPPs along the radial direction of the *** the other hand,the CEMFs can increase the nucleation driving force for the MPDs,which decreases the average radius of MPDs and boosts the formation of dispersed solidification *** research indicates that the application of CEMFs is a promising strategy for controlling the microstructure of immiscible alloys.

关键词： Phase separation Solidification Simulation Composite electric and magnetic fields

Quasi-Shephard's Problem on Projections of Convex Bodies

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Wuhan University Journal of Natural Sciences 2014年第1期19卷 55-61页

作者： MA Tongyi zhang lili College of Mathematics and Statistics Hexi University College of Mathematics and Statistics Northwest Normal University

In this paper, we develop a Fourier analytic approach to study the problem in the Brunn-Minkowski-Firey theory of convex bodies. We formulate and solve a quasi-Shephard＇s problem on projections of convex bodies.

关键词： convex body projection body the Shephard's problem Fourier transform

Efficient grain refinement of Al alloys induced by in-situ nanoparticles

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Journal of Materials Science & Technology 2022年第29期124卷 14-25页

作者： Hongxiang Jiang Yan Song lili zhang Jie He Shixin Li Jiuzhou Zhao Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China

Grain refinement of Al and Al alloys during the solidification remains a long-term *** we report a general strategy for efficient grain refinement through instantaneously in-situ forming abundant nanoparticles with concentrated size *** Al-Zn-Mg-Cu alloy and commercial purity Al are respectively refined by using this proposed strategy and the traditional refinement method(adding AlTi-B alloy into Al melt),and the experimental and numerical results indicate that the TiBnanoparticles instantaneously form in the Al melt during the in-situ refinement *** to the traditional refinement treatment method,the new approach not only can promote the high number density of the nucleation sites and narrow their size distribution,but also tremendously attenuates the agglomeration and settlement of the heterogeneous nucleation *** exhibits much better grain refinement ability and inhibits the decline of the grain refinement *** approach may have broad application prospect not only for the grain refinement of Al and Al alloys,but also for the grain refinement of other alloy systems,***,magnesium,copper,and so on.

关键词： In-situ nanoparticles Aluminum alloys Grain refinement Simulation

Structure transformation induced bi-component Co–Mo/A-Co(OH)_(2)as highly efficient hydrogen evolution catalyst in alkaline media

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Nano Materials Science 2024年第5期6卷 565-575页

作者： Yingqing Ou Lu Liu Xiao Peng lili zhang Zhongwen Ou Wendong zhang Yunhuai zhang School of Chemistry and Chemical Engineering Chongqing UniversityChongqing400044China Department of Chemistry National University of SingaporeSingapore117543Singapore Institute of Sustainability for Chemicals Energy and Environment(ISCE2)Agency for ScienceTechnology and Research in Singapore(A*STAR)Singapore627833Singapore School of Physics Chongqing UniversityChongqing400044China College of Chemistry Chongqing Normal UniversityChongqing401331China Materials Science and Engineering College Sichuan University of Science&EngineeringZigong643000China Department of Military Infrastructure Army Logistics University of PLAChongqing401311China

Elucidating the inherent origins of the sluggish hydrogen evolution reaction(HER)kinetics in alkaline media and developing high-performance electrocatalysts are fundamental for the advances of conventional alkaline water electrolyzers and emerging anion exchange membrane(AEM)*** we present a facile electrochemical modification strategy for the synthesis of bi-component Co–Mo_((18%))/A-Co(OH)_(2)catalyst toward efficient HER catalysis in alkaline *** Co–Mo alloys with adjustable Mo/Co atomic ratio are first prepared by H2-assisted cathodic *** virtue of the appropriate electronic structure and hydrogen binding energy,Co–Mo_((18%))is the most HER active among the alloys and is further activated by a constant-current electrochemical modification *** characterizations reveal the formation of amorphous Co(OH)_(2)nanoparticles on the *** analysis combined with theoretical calculations reveal that the in-situ formed Co(OH)_(2)can efficiently promote the water dissociation,resulting in accelerated Volmer-step *** a result,the Co–Mo_((18%))/A-Co(OH)_(2)simultaneously achieves the optimization of the two factors dominating alkaline HER activity,i.e.,water dissociation and hydrogen adsorption/desorption via the bifunctional synergy of the *** high HER activity(η10 of 47 mV at 10 mA cm^(-2))of Co–Mo_((18%))/A-Co(OH)_(2)is close to benchmark Pt/C catalyst and comparable or superior to the most active non-noble metal catalysts.

关键词： Co-Mo_((18%))/A-Co(OH)_(2) Electrochemical modification Water dissociation Alkaline HER