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Chinese Journal of Aeronautics 2024年第2期37卷 482-500页

作者： Xiaohe WANG Zengqiang CAO Yuehaoxuan WANG yingjiang guo School of Mechanical Engineering Northwestern Polytechnical UniversityXi’an 710072China NPU Xuhang Electromagnetic Technology Co. Ltd.Xi’an 710100China

As the controlled research of Dynamic Installation(DI)and Static Installation(SI),a new interference installation method was developed based on electromagnetic loading to enhance the mechanical properties of composite *** different interference-fit sizes were considered,ranging from a net fit to 2.0%.The experiments were conducted to evaluate the installation resistance and the mechanical behavior of the joint under external ***,an FFA model to model the stress distribution and damage behavior of the bolt-hole contact interface was *** load-displacement curve and damage modes of experiments were used to verify the FEA *** results show that the installation resistance during DI process was remarkably lower than that of SI process corresponding to all interference-fit sizes,and the stress amplitudes induced by interference were larger and widely *** damage of the hole wall was positively correlated with interference fit size,but DI can significantly reduce the damage compared to *** performance tests,DI enhanced the static bearing capacity and extended longer fatigue life of the joints than *** methods can be an effective way to achieve highly reliable interference joints in composite structures.

关键词： Carbon Fiber-Reinforced Polymer(CFRP) Bolted joints Interference-fit Electromagnetic installation Finite Element Analysis(FEA) Damage mechanics Bearing behavior

Privacy-Preserving Average Consensus Algorithm Under Round-Robin Scheduling Protocol

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IEEE/CAA Journal of Automatica Sinica 2024年第7期11卷 1705-1707页

作者： yingjiang guo Wenying Xu Haodong Wang Jianquan Lu Shengli Du the School of Mathematics Southeast UniversityNanjing 21189China the School of Electronic Information and Electrical Engineering Chengdu UniversityChengdu 610106Chengdu 610106China the School of Artificial Intelligence and Automation Beijing University of TechnologyBeijing 100124 the Engineering Research Center of Intelligent Perception and Autonomous Control Ministry of EducationBeijing 100124China

Dear Editor,Over the past decades,cooperative control and distributed optimization have gained significant research attention due to their broad applications such as signal processing,robotics,and social networks[1],[2].As a fundamental component of distributed control and optimization,the issue of average consensus has become a recurring topic of interest[3],[4].

关键词： optimization Round Robin

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基于电磁加载的冲击测试方法及应用

航空制造技术 2024年第7期67卷 112-124页

作者：王晓荷曹增强郭映江郭程翔王玥浩轩西北工业大学西安710072 陕西大工旭航有限公司西安710072

针对国防军工和航空航天对材料、结构或产品进行冲击试验的广泛需求,以及现有冲击测试技术在加载速度、加载力、安全隐患及模式单一等方面存在的问题,提出了基于电磁加载的冲击测试方法,开发了电磁加载的冲击测试系统。电磁力驱动的冲... 详细信息

针对国防军工和航空航天对材料、结构或产品进行冲击试验的广泛需求,以及现有冲击测试技术在加载速度、加载力、安全隐患及模式单一等方面存在的问题,提出了基于电磁加载的冲击测试方法,开发了电磁加载的冲击测试系统。电磁力驱动的冲击测试方法可针对不同的试验对象和不同试验要求,通过调整电源控制参数(主要是电容值和充电电压值)实现加载脉宽、载荷幅值及加载速度的精确调整和控制;通过改变电磁加载头方向便可实现拉伸-压缩试验的快速转换。此外,针对结构受复杂冲击加载的动态测试需求,基于电磁驱动的多轴多向加载可通过控制程序精准控制多驱动头同时放电,从而实现多轴多向同步加载,保证了作用于试件材料上的各向冲击载荷的同步性。因此,基于电磁加载的测试技术具有可控性好、重复性高、测试精度和试验效率高等优势,基于电磁加载的冲击测试解决了传统测试方法加载速度范围小、测试应变率范围有限、大加载力冲击测试难等难题,实现了冲击测试试验安全、稳定、可靠及更加精确的控制和测量。

关键词：电磁加载动态冲击电磁霍普金森杆低速冲击应变率

基于电磁铆枪的CFRP结构干涉螺栓动态压入方法研究

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航空制造技术 2023年第23期66卷 52-59页

作者：王晓荷郭映江王玥浩轩李亮西北工业大学西安710072

为提高复合材料螺栓结构的干涉配合连接质量和力学性能,提出了基于电磁铆枪的CFRP干涉配合螺栓动态压入(Dynamic press-in,DI)方法。对DI方法的压入工艺进行了试验研究,并与静态压入(Static press-in,SI)方法的压入质量进行了对比。测... 详细信息

为提高复合材料螺栓结构的干涉配合连接质量和力学性能,提出了基于电磁铆枪的CFRP干涉配合螺栓动态压入(Dynamic press-in,DI)方法。对DI方法的压入工艺进行了试验研究,并与静态压入(Static press-in,SI)方法的压入质量进行了对比。测量得出了干涉配合螺栓压入过程的压入力–位移曲线,从宏观和微观两方面评估了压入方法和干涉量对层压板压入损伤的影响。此外,对不同压入方法接头力学性能进行了对比,评估了DI对接头性能的连接效果,并初步探讨了DI方法有益于接头性能提高的机理。结果表明,与SI相比,DI能显著降低干涉配合压入阻力,且随着干涉量的增大这一优势更加明显。压入损伤对比结果显示,DI方法有助于钉孔装配界面质量的提高。在静拉伸试验中,DI方法试样比SI方法试样表现出更高的极限承载强度和连接刚度。

关键词：碳纤维增强树脂基复合材料(CFRP) 螺栓结构干涉配合装配界面行为承载性能

基于电磁加载的霍普金森杆入射波控制参数研究

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现代应用物理 2022年第2期13卷 91-95页

作者：张铭豪曹增强黄新平袁昕宇郭映江西北工业大学机电学院陕西大工旭航电磁科技有限公司西安710072 江西省知识产权保护中心南昌330029

霍普金森杆技术已广泛应用于材料的动态力学测试领域,然而现有采用空气炮加载的霍普金森杆存在诸多弊端。电磁铆接技术中,利用电磁加载的铆枪能产生可控可调的应力波,本文提出采用电磁铆接设备加载系统产生的应力波作为霍普金森杆的入... 详细信息

霍普金森杆技术已广泛应用于材料的动态力学测试领域,然而现有采用空气炮加载的霍普金森杆存在诸多弊端。电磁铆接技术中,利用电磁加载的铆枪能产生可控可调的应力波,本文提出采用电磁铆接设备加载系统产生的应力波作为霍普金森杆的入射波来对试件进行加载,并基于ANSYS Maxwell软件对电磁力产生的入射波的影响因素进行了探讨。结果表明,取消电磁铆接设备加载系统的续流二极管,可获得满足霍普金森杆试验的入射波,并可通过调节电压和电容,实现对入射波波形的精确控制。

关键词：霍普金森杆电磁加载应力波波形控制

Bioengineering extracellular vesicles as novel nanocarriers towards brain disorders

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Nano Research 2023年第2期16卷 2635-2659页

作者： Jie Wu Lei Ma Danni Sun Xinru Zhang Jiwei Cui yingjiang Du Yumiao guo Xue Wang Liuqing Di Ruoning Wang College of Pharmacy Nanjing University of Chinese MedicineNanjing 210023China Jiangsu Provincial TCM Engineering Technology Research Center of High Efficient Drug Delivery System Nanjing 210023China

Despite noteworthy technological progress and promising preclinical trials,brain disorders are still the leading causes of death *** vesicles(EVs),nano-/micro-sized membrane vesicles carrying bioactive molecules,are involved in cellular *** on their unique properties,including superior biocompatibility,non-immunogenicity,and blood-brain barrier(BBB)penetration,EVs can shield their cargos from immune clearance and transport them to specific site,which have attracted increasing interests as novel nanocarriers for brain ***,considering the limitations of native EVs,such as poor encapsulation efficiency,inadequate targeting capability,uncontrolled drug release,and limited production,researchers bioengineer EVs to fully exploit the clinical ***,this review initially describes the basic properties,biogenesis,and uptake process of EVs from different ***,we highlight the application of EVs derived from different sources for personalized therapy and novel strategies to construct bioengineered EVs for enhanced diagnosis and treatment of brain ***,it also presents a systematic comparison between EVs and other brain-targeted ***,existing challenges and future perspectives of EVs have been discussed,hoping to bolster the research from benchtop to bedside.

关键词： brain disorders extracellular vesicles drug delivery platforms bioengineering strategies responsive materials

High Order Observer with Integral Sliding Mode Controller for Permanent Magnet Synchronous Motor

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High Order Observer with Integral Sliding Mode Controller fo...

Prevalence of antifolate drug resistance markers in Plasmodium vivax in China

第40届中国控制会议

作者： Jingyu Liu yingjiang Zhou guo-Ping Jiang Cheng Li College of Automation & College of Artificial Intelligence Nanjing University of Posts and Telecommunications Jiangsu Engineering Laboratory for Internet of Things and Intelligent Robotics

In this paper,high order observer（HOO） and integral sliding mode controller（ISMC） are studied in the system of permanent magnet synchronous motor（PMSM） with the uncertainty *** system is divided into two loops:current loop and speed loop for ISMC and *** can get the estimated value of external interference and the uncertain parameters’ *** estimated value got from HOO will also be accurate because of the high-order characteristic of *** with the estimated disturbance has better robust and *** simulations prove the effectiveness of the ISMC and HOO.

关键词： Permanent magnet synchronous motor high order observer integral sliding mode controller speed loop current loop

来源： cnki会议评论

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Frontiers of Medicine 2022年第1期16卷 83-92页

作者： Fang Huang Yanwen Cui He Yan Hui Liu Xiangrui guo Guangze Wang Shuisen Zhou Zhigui Xia National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionChinese Center for Tropical Diseases ResearchWHO Collaborating Center for Tropical DiseasesNational Centre for International Research on Tropical DiseasesNHC Key Laboratory of Parasite and Vector Biology(National Institute of Parasitic DiseasesChinese Center for Disease Control and Prevention)Shanghai 200025China Yunnan Institute of Parasitic Diseases Puer 665000China yingjiang County for Disease Control and Prevention Yingjiang 679300China Hainan Center for Disease Control&Prevention Haikou 570203China

The dihydrofolate reductase(dhfr)and dihydropteroate synthetase(dhps)genes of Plasmodium vivax,as antifolate resistance-associated genes were used for drug resistance surveillance.A total of 375 *** isolates collected from different geographical locations in China in 2009–2019 were used to sequence Pvdhfr and *** majority of the isolates harbored a mutant type allele for Pvdhfr(94.5%)and Pvdhps(68.2%).The most predominant point mutations were S117T/N(77.7%)in Pvdhfr and A383G(66.8%)in *** acid changes were identified at nine residues in Pvdhfr.A quadruple-mutant haplotype at 57,58,61,and 117 was the most frequent(57.4%)among 16 distinct Pvdhfr *** in Pvdhps were detected at six codons,and the double-mutant A383G/A553G was the most prevalent(39.3%).Pvdhfr exhibited a higher mutation prevalence and greater diversity than Pvdhps in *** isolates from Yunnan carried multiple mutant haplotypes,while the majority of samples from temperate regions and Hainan Island harbored the wild type or single mutant *** study indicated that the antifolate resistance levels of *** parasites were different across China and molecular markers could be used to rapidly monitor drug *** provided evidence for updating national drug policy and treatment guidelines.

关键词： drug resistance antifolates molecular markers Plasmodium vivax China

背斜坚硬顶板采空区瓦斯燃烧原因分析及处理措施

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煤矿安全 2016年第9期47卷 173-175,179页

作者：周应江于智卓郭辉国投新集能源股份有限公司安徽淮南232186

基于新集二矿121109综采工作面岩石撞击摩擦火花引燃采空区瓦斯燃烧事故调查分析,开展坚硬石英顶板煤层开采瓦斯防治技术研究,分析坚硬岩石顶板撞击摩擦机理和背斜地质构造瓦斯流动规律。研究结果表明:采取采空区瓦斯抽放、顶板预裂爆... 详细信息

基于新集二矿121109综采工作面岩石撞击摩擦火花引燃采空区瓦斯燃烧事故调查分析,开展坚硬石英顶板煤层开采瓦斯防治技术研究,分析坚硬岩石顶板撞击摩擦机理和背斜地质构造瓦斯流动规律。研究结果表明:采取采空区瓦斯抽放、顶板预裂爆破、湿化采空区环境和注入惰性气体等预防措施能够有效的预防回采期间采空区瓦斯燃烧等问题。

关键词：采空区瓦斯燃烧背斜坚硬顶板瓦斯抽放预裂爆破

新的解剖分型对直肠癌术后骶前复发根治性切除的影响

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中华胃肠外科杂志 2023年第3期26卷 277-282页

作者：郭鹏陶亮王畅吕昊润杨毅胡浩李广学刘凡李育玺叶颖江王杉北京大学人民医院急诊外科北京100044 安顺市人民医院胃肠外科安顺561000 北京大学人民医院胃肠外科北京100044 北京大学人民医院骨肿瘤科北京100044 北京大学人民医院泌尿外科北京100044 北京大学人民医院整形美容科北京100044

目的本文试提出一种新的直肠癌术后骶前复发分型,并探讨该分型对再次手术根治性的影响。方法本研究为回顾性观察性研究,回顾性收集2008年1月至2022年9月期间,在北京大学人民医院胃肠外科行手术治疗的51例直肠癌骶前复发患者的临床病理... 详细信息

目的本文试提出一种新的直肠癌术后骶前复发分型,并探讨该分型对再次手术根治性的影响。方法本研究为回顾性观察性研究,回顾性收集2008年1月至2022年9月期间,在北京大学人民医院胃肠外科行手术治疗的51例直肠癌骶前复发患者的临床病理资料。纳入标准:(1)原发直肠癌不伴远处转移,且接受根治性切除手术;(2)确诊为直肠癌骶前复发:根据CT、MRI、正电子发射型计算机断层显像(PET/CT)检查,体格检查或可能的手术探查和病理学组织活检,经多学科协作团队评估证实为直肠癌骶前复发;(3)住院、门诊病例资料及随访资料完整。排除直肠癌骶前复发同时伴发远处转移者。根据术后病理将患者分为根治性切除组(29例)与非根治性切除组(22例)。本研究的观察指标包括:(1)本团队根据病灶解剖特点对直肠癌骶前复发进行分型:Ⅰ型:未累及骶骨;Ⅱ型:累及低位骶骨,但尚未累及其他部位;Ⅲ型:累及高位骶骨,但尚未累及其他部位;Ⅳ型:累及骶骨及其他部位。(2)骶前复发手术治疗情况、术后至发现复发的总体生存期(OS)、无病生存期时长(DFS)。(3)影响直肠癌骶前复发的手术根治性切除因素分析。非正态分布的计量资料用M(范围)表示,组间比较采用Mann-Whitney U检验。结果全组患者中位随访25(2~96)个月,随访率100%。与直肠癌骶前复发非根治性切除组比较,根治性切除组远期转移率明显更低[24.1%(7/29)比54.5%(12/22),χ^(2)=8.333,P=0.026]、术后DFS更长[32.7(3.0~63.0)个月比16.1(1.0~41.0)个月,Z=8.907,P=0.005];术后OS虽然更长,但差异无统计学意义[39.2(3.0~66.0)个月比28.1(1.0~52.0)个月,Z=1.042,P=0.354]。单因素分析结果显示:原发肿瘤pN分期、骶前复发解剖分型、骶前复发术式与根治性切除率有关(均P0.05)。多因素分析结果显示:原发肿瘤病理学分期为pN1~2(OR=3.506,95%CI:1.089~11.291,P=0.035)、手术方式(经腹切除:OR=29.250,95%CI:2.789~306.811,P=0.005;腹会阴联合切除:OR=26.000,95%CI:2.219~304.702,P=0.009)以及骶前复发解剖分型(Ⅲ型:OR=16.000,95%CI:1.542~166.305,P=0.020;Ⅳ型:OR=36.667,95%CI:3.261~412.258,P=0.004)均是影响直肠癌术后骶前复发根治性切除的独立危险因素。结论根据病灶解剖特点提出的直肠癌骶前复发分型是手术根治性切除的独立影响因素,可根据患者病历资料,预测患者是否可以根治性切除。

关键词：直肠肿瘤骶前复发分型根治性切除回归分析