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数显式上销簧弹性测量仪设计

机械设计与制造 2015年第7期 181-184页

作者：郭艳青日照裕鑫动力有限公司技术部山东日照276800 青岛理工大学机械工程学院山东青岛266033

目前,机械式弹簧拉压试验机仅能测试上销簧某一点的压力值,无法检测上销簧的弹性系数。为了对上销簧的刚度曲线和阻尼比进行测试,从而对上销簧的技术参数进行改进以获得较好的抗应力松弛特性,研制了数显式上销簧弹性测量仪。介绍了测量... 详细信息

目前,机械式弹簧拉压试验机仅能测试上销簧某一点的压力值,无法检测上销簧的弹性系数。为了对上销簧的刚度曲线和阻尼比进行测试,从而对上销簧的技术参数进行改进以获得较好的抗应力松弛特性,研制了数显式上销簧弹性测量仪。介绍了测量仪的机械结构和测控系统,采用Lab VIEW软件,通过计算机对电动位移台进行控制,使用数据采集卡采集上销簧的压缩量和所受力的关系曲线。通过对圆柱螺旋压缩弹簧的检测,验证了本测量仪的准确性和可靠性。利用该测量仪对一组上销簧进行测试,实现了上销簧刚度曲线和阻尼比的检测,取得满意效果,为产品开发人员优化上销簧的设计参数提供科学数据,并能根据需要对系统进行二次开发。

关键词：上销簧刚度曲线阻尼比

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多绳摩擦提升钢丝绳防滑方法

煤矿机械 2009年第2期30卷 182-184页

作者：严国庆沧州职业技术学院河北沧州061001

多绳摩擦提升机提升钢丝绳防滑研究一直受到矿山用户的关注,采用计算机控制技术对提升钢丝绳防滑实施检测控制,是多绳摩擦提升机提高安全性能和增加提升高度的有效途径。对煤矿竖井服役的多绳摩擦提升机,可以通过升级改造提升其安全性... 详细信息

多绳摩擦提升机提升钢丝绳防滑研究一直受到矿山用户的关注,采用计算机控制技术对提升钢丝绳防滑实施检测控制,是多绳摩擦提升机提高安全性能和增加提升高度的有效途径。对煤矿竖井服役的多绳摩擦提升机,可以通过升级改造提升其安全性能。使用辅助夹紧装置增加提升钢丝绳防滑安全系数,可以有效抑制提升钢丝绳打滑,保证矿井提升安全。

关键词：多绳摩擦提升机提升钢丝绳防滑辅助夹紧装置

Artificial intelligence advances drug delivery system and its clinical transition

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Science Bulletin 2025年第3期70卷 305-308页

作者： Hui Wang Xiao-yan You guo-Ping Zhao Master Lab for Innovative Application of Nature Products National Center of Technology Innovation for Synthetic BiologyTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences(CAS)Tianjin 300308China Henan Engineering Research Center of Food Microbiology College of Food and BioengineeringHenan University of Science and TechnologyLuoyang 471023China Haihe Laboratory of Synthetic Biology Tianjin 300308China CAS-Key Laboratory of Synthetic Biology CAS Center for Excellence in Molecular Plant SciencesShanghai Institute of Plant Physiology and EcologyChinese Academy of SciencesShanghai 200032China CAS Key Laboratory of Quantitative Engineering Biology Shenzhen Institute of Synthetic BiologyShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Since November 2022,ChatGPT,an artificial intelligence(AI)chatbot,has rapidly captured global attention for its detailed responses and articulated answers across a broad spectrum of knowledge domains[1],[2].All industries will reorient around it,prompting a reevaluation of how this technology could further promote scientifical research and its clinical applications.

关键词： system transition spectrum

火箭发动机喷管伺服机构负载模拟系统设计与实验

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兵工学报 2014年第9期35卷 1495-1502页

作者：张朋付永领郭彦青北京航空航天大学机械工程及自动化学院北京100191

针对火箭发动机喷管伺服机构的半物理仿真需要,设计一种可对惯性负载、摩擦力矩负载、弹性力矩负载、伺服机构安装刚度进行模拟的电液负载模拟系统。依据伺服机构负载特点,由机械的方式实现惯性负载、摩擦负载以及安装刚度的模拟,由阀... 详细信息

针对火箭发动机喷管伺服机构的半物理仿真需要,设计一种可对惯性负载、摩擦力矩负载、弹性力矩负载、伺服机构安装刚度进行模拟的电液负载模拟系统。依据伺服机构负载特点,由机械的方式实现惯性负载、摩擦负载以及安装刚度的模拟,由阀控伺服马达实现弹性力矩的模拟;分别建立伺服机构系统和马达加载系统的数学模型,并为马达加载系统设计基于速度前馈补偿和力矩前馈的控制系统;进行负载模拟器的现场实验,实验结果表明,各种加载负载满足精度要求,验证了负载模拟器设计的合理性和实用性,以及控制策略的有效性。

关键词：兵器科学与技术负载模拟伺服机构数学模型力矩前馈速度补偿

Stress anisotropy regulated wrinkling pattern evolution on a core-shell soft cylinder

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 132-144页

作者： yan Zhao Zhipan Jie Yilong Zhang guo-yang Li yanping Cao Chao Jiang State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China Department of Mechanics and Engineering Science College of EngineeringPeking UniversityBeijing 100871China Institute of Biomechanics and Medical Engineering AMLDepartment of Engineering MechanicsTsinghua UniversityBeijing100084China

Diverse wrinkling patterns can occur on curved bilayer systems under differential growth or *** such systems,stress anisotropy is frequently encountered,and the coupling effect of curvature and stress anisotropy on the pattern evolution remains largely *** this study,we investigate the evolution of wrinkling patterns on a cylinder core-shell system with stress anisotropy leveraging both theoretical analysis and finite element *** buckling analysis has identified three distinct critical buckling modes regulated by the stress anisotropy,i.e.,axial sinusoidal mode,checkerboard mode,and circumferential sinusoidal *** finite element simulations,along with post-buckling analysis,reveal seven distinct evolutionary paths stemming from the three critical buckling *** present phase diagrams for both the critical buckling modes and their evolutionary paths,which are determined by dimensionless curvature and stress *** results not only expand the theoretical research on surface wrinkling of a core-shell soft cylinder but also introduce stress anisotropy as a significant parameter for regulating the wrinkling patterns and their evolutionary paths in curved bilayer *** revelation of a multitude of wrinkling patterns and their evolutionary pathways holds great potential for advancing applications that leverage tunable wrinkle surfaces.

关键词： wrinkling pattern evolutionary path stress anisotropy dimensionless curvature core-shell soft cylinder

Hyperbranched Poly(α-aminonitrile)s Constructed via Catalyst-Free Multicomponent Polymerization of Trialdehydes,Diamines and Trimethylsilyl Cyanide

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Chinese Journal of Polymer Science 2025年第2期43卷 341-349页

作者： Tian-Yu Cheng Jian-qing Ding Yu-Xin Tong Jun-guo Fang Jia Wang School of Chemical and Environmental Engineering Anhui Polytechnic UniversityWuhu241000China Songshan Lake Materials Laboratory Dongguan523808China

Functional hyperbranched polymers,as an important class of materials,are widely applied in diverse ***,the development of simple and efficient reactions to prepare hyperbranched polymers is of great *** this work,trialdehydes,diamines,and trimethylsilyl cyanide could easily undergo multicomponent polymerization under mild conditions,producing hyperbranched poly(α-aminonitrile)s with high molecular weights(M_(w) up to 4.87×10^(4))in good yields(up to 85%).The hyperbranched poly(α-aminonitrile)s have good solubility in commonly used organic solvents,high thermal stability as well as morphological ***,due to the numerous aldehyde groups in their branched chains,these hb-poly(α-aminonitrile)s can undergo one-pot,two-step,four-component post-polymerization with high *** work not only confirms the efficiency of our established catalyst-free multicomponent polymerization of aldehydes,amines and trimethylsilyl cyanide,but also provides a versatile and powerful platform for the preparation of functional hyperbranched polymeric materials.

关键词： Catalyst-free Multicomponent polymerization Hyperbranched polymer Post-polymerization

同位旋效应对N=9同中子素能级间隙的影响(英文)

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高能物理与核物理 2007年第4期31卷 361-365页

作者：郭艳青任中洲南京大学物理系南京210008

在单粒子壳模型下,研究了N=8及N=9同中子素的基态性质．通过在伍兹-萨克逊势深中引入同位旋依赖项,考虑了同位旋效应对核平均势的影响．理论计算的均方根半径和自旋宇称值与实验结果整体上符合较好,尤其是N=9同中子素中的2s1／2与1d5／... 详细信息

在单粒子壳模型下,研究了N=8及N=9同中子素的基态性质．通过在伍兹-萨克逊势深中引入同位旋依赖项,考虑了同位旋效应对核平均势的影响．理论计算的均方根半径和自旋宇称值与实验结果整体上符合较好,尤其是N=9同中子素中的2s1／2与1d5／2中子能级间的能级反转得到了较好的解释．计算结果还显示在14B和15C基态中存在单中子晕．

关键词：壳模型同位旋效应能级反转基态性质

Light-controlled protein imprinted nanospheres with variable recognition specificity

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Chinese Chemical Letters 2025年第2期36卷 173-178页

作者： Mingqi Wang Shixin Fa Jiate Yu guoxian Zhang Yi yan qing Liu Qiuyu Zhang Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology School of Chemistry and Chemical Engineering Northwestern Polytechnical University

This work develops a protein imprinted nanosphere with varied recognition specificity for bovine serum albumin(BSA) and lysozyme(Lyz) under different UV light through a gradient dual crosslinked imprinting strategy(i.e., covalent crosslinking and dynamic reversible crosslinking). The imprinting cavities are initially constructed using irreversible covalent crosslinking to specifically recognize BSA, and then the coumarin residues in the imprinting cavities are crosslinked under 365 nm UV light to further imprint Lyz,because Lyz has smaller size than BSA. Since the photo-crosslinking of coumarin is a reversible reaction,the imprinting cavities of Lyz can be de-crosslinked under 254 nm UV light and restore the imprinting cavities of BSA. Moreover, the N-isopropyl acrylamide(NIPAM) and pyrrolidine residues copolymerized in the polymeric surface of the nanospheres are temperature-and p H-responsive respectively. Therefore, the protein rebinding and release behaviors of the nanospheres are controlled by external temperature and p H. As a result, the materials can selectively separate BSA from real bovine whole blood and Lyz from egg white under different UV light. This study may provide a new strategy for construction of protein imprinted materials with tunable specificity for different proteins.

关键词： Dynamically reversible crosslinking Molecularly imprinting Protein recognition Stimulus-response Variable specificity

La_(0.3)Ca_(0.7)Mn_(1-x)V_xO_3体系的有序相和再入型自旋玻璃行为研究

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物理学报 2010年第8期59卷 5759-5765页

作者：刘宁严国清毛强王桂英郭焕银安徽科技学院理学院凤阳233100 宿州学院安徽省高校自旋电子与纳米材料重点实验室培育基地宿州234000

通过对La0.3Ca0.7Mn1-xVxO3(x=0.05,0.10,0.134,0.20)体系的M-T曲线、ρ-T曲线、ESR谱的测量,研究了Mn位掺V对La0.3Ca0.7MnO3体系电荷序和自旋序的影响.结果表明,当0.05≤x≤0.134时,体系存在电荷有序(CO)相,其自旋序随温度降低发生顺磁(PM)-电荷有序(CO)-反铁磁(AFM)变化.当x=0.20时,CO相逐步融化,在40K发生自旋玻璃转变,表现出再入型的自旋玻璃行为,低温下的基态存在着多种复杂的磁相互作用之间的竞争机理.

关键词：电荷有序自旋序相分离再入型自旋玻璃行为