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太赫兹波光电导天线探测器的研究进展

渭南师范学院学报 2024年第8期39卷 79-87,94页

作者：王志全董陈岗王欣渭南师范学院物理与电气工程学院陕西渭南714099

对国内外利用光电导天线探测器检测偏振太赫兹波进行了归纳总结,发现国内外对用于太赫兹偏振检测的光电导天线探测器的研发各有优缺点,但不能同时满足高效率、高精度、高信噪比的要求。因此,通过对光电导天线阵列探测器的有源区域、相... 详细信息

对国内外利用光电导天线探测器检测偏振太赫兹波进行了归纳总结,发现国内外对用于太赫兹偏振检测的光电导天线探测器的研发各有优缺点,但不能同时满足高效率、高精度、高信噪比的要求。因此,通过对光电导天线阵列探测器的有源区域、相邻阵元之间的反向电流和探测准确性等进行国内外研究现状和发展动态梳理,分析光电导阵列探测器在太赫兹偏振检测中所遇到的关键问题,为光电导天线阵列探测器的研发和应用提供一定的参考。

关键词：太赫兹波光电导天线偏振光

校企共育下智能制造技能教学人才培养模式探索

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模具制造 2024年第1期24卷 105-106,109页

作者：王翠竹熊征伟王智全四川信息职业技术学院现代制造学院四川广元628000

基于落实《国家职业教育改革实施方案》等政策,立足国家制造强国战略,围绕立德树人根本任务,牢记“为党育人,为国育才”的光荣使命,以培养服务区域装备制造产业链发展的高素质技术技能复合型人才为目标。推进校企深度合作,提出校企双元... 详细信息

基于落实《国家职业教育改革实施方案》等政策,立足国家制造强国战略,围绕立德树人根本任务,牢记“为党育人,为国育才”的光荣使命,以培养服务区域装备制造产业链发展的高素质技术技能复合型人才为目标。推进校企深度合作,提出校企双元合作、协同育人机制,创新深化产教融合的人才培养模式,是探索出高素质技术技能复合型人才培养的有效途径。

关键词：校企协同订单班双导师制复合型人才

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Enterprise-wide optimization of integrated planning and scheduling for refinery-petrochemical complex with heuristic algorithm

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Frontiers of Chemical Science and Engineering 2023年第10期17卷 1516-1532页

作者： Lifeng Zhang Haoyang Hu zhiquan wang Zhihong Yuan Bingzhen Chen State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Department of Chemical Engineering Tsinghua UniversityBeijing 100084China

This paper focuses on the integrated problem of long-term planning and short-term scheduling in a largescale refinery-petrochemical complex,and considers the overall manufacturing process from the upstream refinery to the downstream petrochemical *** time scales are incorporated from the planning and scheduling *** the end of each discrete time period,additional constraints are imposed to ensure material balance between different time *** time representation is applied to the planning subproblem,while continuous time is applied to the scheduling of ethylene cracking and polymerization processes in the petrochemical *** enterprise-wide mathematical model is formulated through mixed integer nonlinear *** solve the problem efficiently,a heuristic algorithm combined with a convolutional neural network(CNN),is *** variables are used as the CNN input,leading to the integration of a data-driven approach and classical optimization by which a heuristic algorithm is *** results do not only illustrate the detailed operations in a refinery and petrochemical complex under planning and scheduling,but also confirm the high efficiency of the proposed algorithm for solving large-scale problems.

关键词： planning scheduling refinery-petrochemical convolutional neural network heuristic algorithm

SolidWorks与机械制图有机融合的教学实践

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甘肃高师学报 2024年第2期29卷 79-83页

作者：王志全王振禄魏伟刘善春兰州城市学院培黎机械工程学院甘肃兰州730070

SolidWorks软件以其用户友好的界面和丰富的功能模块,能够有效地支持机械制图教学,促进理论知识的掌握与实践技能的有效提高.文章依托SolidWorks软件作为辅助教学平台,通过利用机械制图与计算机辅助设计技术的有机融合,采用“一题两作... 详细信息

SolidWorks软件以其用户友好的界面和丰富的功能模块,能够有效地支持机械制图教学,促进理论知识的掌握与实践技能的有效提高.文章依托SolidWorks软件作为辅助教学平台,通过利用机械制图与计算机辅助设计技术的有机融合,采用“一题两作”项目式教学模式,将学生的理论学习与实际操作紧密结合,以此提升学生的应用技能和创新思维.这种教学模式对于推动工程教育发展和培养应用型人才具有重要的作用.

关键词： SolidWorks软件机械制图一题两作项目式教学

Joining of Co coated ferritic stainless steel to ceramic solid oxide cells by a novel Ag-SiO_(2) braze

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Journal of Materials Science & Technology 2022年第26期121卷 174-180页

作者： zhiquan wang Chun Li Ragnar Kiebach Ilaria Ritucci Ming Chen Jian Cao State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China Department of Energy Conversion and Storage Technical University of DenmarkLyngby CampusAnker Engelunds Vej2800Denmark

A novel Ag-SiO_(2) braze for Solid Oxide Cells was successfully developed and applied to join Co coated AISI 441 ferritic stainless steel to YSZ-NiO half *** braze showed an improved wettability on the coated steel and the YSZ compared to pure Ag.A defect-free steel/YSZ joint was obtained using an Ag-1SiO_(2) braze jointed at 1000℃for 30 min in *** microstructure of the joints was characterized by scanning electron microscopy and transmission electron microscopy with energy-dispersive X-ray ***,a Co-Si-O_(2)phase diagram was calculated and used to explain the experimental results and formulate a reaction *** was found,that during the air brazing process,Co_(3)O_(4)and(Co,Fe)_(3)O_(4)are formed by the oxidation of the prefabricated Co *** growth of Cr_(2)O_(3)was effectively impeded by the formed Co-based *** a second step,Co_(2)O_(3)reacts with the SiOpresent in *** CoSiOformed by the reaction ensures a firm bonding between the steel and Ag-SiObraze.

关键词： Co coated stainless steel YSZ-NiO half cell Microstructure Interfacial reaction Joining Ag-SiO_(2)braze Solid Oxide Cells

Unraveling the Effects of Austenitizing Temperature and Austenite Grain Size on the Crystallographic Characteristics and Mechanical Properties of Martensitic Transformation Products in a Low‑Alloy Steel

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Acta Metallurgica Sinica(English Letters) 2023年第4期36卷 694-704页

作者： Binbin Wu Fangzhong Hu zhiquan wang Shaopeng Yang Rui Zhong Chengjia Shang Zhigang Yang Chi Zhang Key Laboratory for Advanced Materials of Ministry of Education School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Technical Center Masteel Co.Ltd.Ma’anshan 243000China Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China Yangjiang Branch Guangdong Laboratory for Materials Science and Technology(Yangjiang Advanced Alloys Laboratory)Yangjiang 529500China

The influence of austenitizing temperature and austenite grain size on the crystallographic characteristics and mechanical properties of transformation products was investigated in a low-alloy *** at a lower temperature after austenitization at 1050℃ can reduce the vacancy concentration and enhance the stability of austenite,thereby determining the martensite-start(Ms)temperature and density of twin-related V1/V2 variant pairs.V1/V2 variant pairs are predominately generated by autocatalytic nucleation,which can promote transformation by *** at 800℃ after austenitization at 1050℃ generated the highest content of V1/V2 variant pairs,which contributed to high values of strength,Charpy impact energy,and *** addition to refining the austenite grain size,niobium(Nb)microalloying increases the packet boundaries of the transformation products,mainly because the refined austenite grains provide more nucleation sites for the martensitic ***,the density of block boundaries decreases after austenite refinement by Nb microalloying,owing to insufficient autocatalytic nucleation.

关键词： Steel Martensite Transformation Nucleation Variant

超声收缩期峰值血流速度、阻力指数与乳腺癌组织中Survivin、基质金属蛋白酶-11、人类表皮生长因子受体2关系研究

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陕西医学杂志 2024年第7期53卷 910-913,930页

作者：王志泉陈岩高姗刘彦丽靳元齐齐哈尔医学院第五附属医院黑龙江大庆163000

目的:探讨超声收缩期峰值血流速度(PSV)、阻力指数(RI)与乳腺癌组织中Survivin、基质金属蛋白酶-11(MMP-11)、人类表皮生长因子受体2(HER2)的关系。方法:选取60例乳腺癌患者作为观察组,另选择同期60例乳腺良性病变患者作为对照组。均行... 详细信息

目的:探讨超声收缩期峰值血流速度(PSV)、阻力指数(RI)与乳腺癌组织中Survivin、基质金属蛋白酶-11(MMP-11)、人类表皮生长因子受体2(HER2)的关系。方法:选取60例乳腺癌患者作为观察组,另选择同期60例乳腺良性病变患者作为对照组。均行手术治疗,术前经超声检测,比较两组患者术前RI值、PSV值,免疫组化法检测术后癌组织中Survivin、MMP-11、HER2的表达,分析Survivin、MMP-11、HER2表达与超声RI、PSV值的关系。结果:观察组RI、PSV值高于对照组(均P<0.05)。观察组癌组织中Survivin、MMP-11、HER2表达阳性率高于对照组(均P<0.05)。不同病灶直径、临床分期患者RI、PSV值,不同病灶直径、临床分期及是否淋巴结转移患者癌组织中Survivin、MMP-11、HER2表达比较,差异有统计学意义(均P<0.05)。癌组织中Survivin、MMP-11、HER2表达与PSV、RI值呈正相关(均P<0.05)。结论:超声检测RI、PSV值对术前判断乳腺癌有一定价值,RI、PSV值与乳腺癌癌组织Survivin、MMP-11、HER2表达均相关,Survivin、MMP-11、HER2在乳腺癌的发生、发展过程中发挥重要作用。

关键词：乳腺癌超声收缩期峰值血流速度阻力指数 Survivin 基质金属蛋白酶-11 人类表皮生长因子受体2

Data-driven optimal operation of the industrial methanol to olefin process based on relevance vector machine

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Chinese Journal of Chemical Engineering 2021年第6期34卷 106-115页

作者： zhiquan wang Liang wang Zhihong Yuan Bingzhen Chen Department of Chemical Engineering Tsinghua UniversityBeijing 100084China State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

Methanol to olefin(MTO)technology provides the opportunity to produce olefins from nonpetroleum sources such as coal,biomass and natural *** than 20 commercial MTO plants have been put into *** now,contributions on optimal operation of industrial MTO plants from a process systems engineering perspective are *** on relevance vector machine(RVM),a data-driven framework for optimal operation of the industrial MTO process is established to fully utilize the plentiful industrial data *** correlates the yield distribution prediction of main products and the operation *** correlations then serve as the constraints for the multi-objective optimization model to pursue the optimal operation of the *** sorting genetic algorithmⅡis used to solve the optimization *** tests demonstrate that the ethylene yield is effectively improved based on the proposed *** RVM does provide the distribution prediction instead of point estimation,the established model is expected to provide guidance for actual production operations under uncertainty.

关键词： Methanol to olefins Relevance vector machine Genetic algorithm Operation optimization Systems engineering Process systems

Satisfactory fault-tolerant controller design for uncertain systems subject to actuator faults

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仪器仪表学报 2008年第5期29卷 921-926页

作者： Zhang Dengfeng Su Hongye wang zhiquan Institute of Advanced Process Control Zhejiang University Hangzhou 310027 China Key Lab of Digital Manufacturing Technology Huaiyin Institute of Technology Huai＇an 223001 China School of Automation Nanjing University of Science and Technology Nanjing 210094 China

Based on satisfactory control strategy,a new method for robust passive fault tolerant controller is proposed for a class of uncertain discrete-time systems subject to actuator *** state-feedback gain matrix is calculated by linear matrix inequality(LMI)*** designed controller guarantees that the closed-loop system meets the pre-specified consistent constraints on circular pole index and steady-state variance index simultaneously for normal case and possible actuator fault *** consistency of the performance indices is ***,with the mentioned indices constraints,a solution is obtained by convex optimal technique for the robust satisfactory fault-tolerant controller with optimal control-cost.

关键词：控制器设计方案不确定性误差机械仪器