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Reconstructive treatment of symptomatic vertebral artery dissecting aneurysms with Willis covered stent: Initial experience

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Journal of Interventional Medicine 2020年第4期3卷 184-191页

作者： Yi Gu li Chen Yang Zhang Mo Chen yongdong li YueQi Zhu HaiTao Lu liMing Wei PeiLei Zhang MinHua li BinXian Gu Jin You Wu Wang Institute of Diagnostic and Interventional Radiology Shanghai Jiao Tong University Affiliated Sixth People’s HospitalShanghai200233China Zhejiang Shin-an International Hospital 314031China

Background:Symptomatic vertebral artery dissecting aneurysm(VADA)is a challenging disease with controversy on treatment strategy due to anatomic configuration and their ***,the outcomes of reconstructive treatment have not been well ***:To evaluate the safety and efficacy of reconstructive endovascular treatment(EVT)for symptomatic VADAs with Willis covered ***:We evaluated retrospectively 13 patients with symptomatic VADAs who treated with Willis covered stent,compared with stent-assisted coiling(SAC)on the characteristics,posttreatment course,angiographic and clinical follow-up outcomes at an average of 14.4 months(range,3-48 months).Results:A total of 33 patients with symptomatic VADAs were reviewed,23 of these patients with ruptured *** technical successful rate is 100%respectively in Willis covered stent(Group A)and SAC(Group B,n=20).The initial complete occlusion rate was significant higher in group A(100%)than group B(30%)(plications were not significant different in the two *** follow-up angiograms revealed 5 recurrent VADAs in group B and no recurrence in group A(p>0.05).No obvious in-stent stenosis and no re-hemorrhage and delayed ischemic symptoms during the follow-up *** final angiograms of all survived patients demonstrated the complete occlusion rate was higher in group A(100%)than group B(80%),but no significant statistical difference(p>0.05).Clinical outcomes were favorable in 31(93.9%),severe disability occurred in one in group B,and only one death in group *** final clinical outcomes were also not significant difference in the two groups(p>0.05).Conclusions:Our initial result demonstrated reconstructive EVT with Willis covered stent provides a viable approach for selected symptomatic VADAs involving the intracranial and extracranial segments,which is similar to favorable results with ***,an expanded clinical experiences and larger cohort stud

关键词： Vertebral artery dissecting aneurysm Endovascular treatment Willis covered stent Stent Coil

二极管钳位型五电平逆变器电容电压平衡域研究

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电工技术学报 2008年第1期23卷 77-83页

作者：高跃李永东清华大学电力系统国家重点实验室北京100084

分析了二极管钳位型多电平逆变器在全负载范围内的电容电压平衡问题。首先在五电平逆变器数学模型的基础上对电容电压平衡规律进行分析;然后详细研究了逆变器开关切换规则与PWM控制策略,进一步提出采用目标函数最优的方法对可行开关序... 详细信息

分析了二极管钳位型多电平逆变器在全负载范围内的电容电压平衡问题。首先在五电平逆变器数学模型的基础上对电容电压平衡规律进行分析;然后详细研究了逆变器开关切换规则与PWM控制策略,进一步提出采用目标函数最优的方法对可行开关序列寻优,实现电容电压平衡控制。仿真分析得出了全负载范围内的电容电压平衡域曲线。结果表明,在高功率因数和大调制比下电容电压很难达到动态平衡,五电平逆变器很难直接应用于全速度范围的中压交流调速领域。

关键词：五电平逆变器 PWM调制策略开关切换规则电容电压平衡域

Treatment of permanent pacemaker electrode-induced cardiac perforation

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Discussion of Clinical Cases 2015年第3期2卷 34-40页

作者： yongdong li Zhiping Ge lina Wei Songkui Dai The Third Affiliated Hospital of Inner Mongolia Medical University BaotouChina

A case of permanent pacemaker electrode-induced perforation in the Third Affiliated Hospital of Inner Mongolia Medical University was collected and analyzed on the basis of diagnosis,physical examination and *** perforation is one of the most serious complications of pacemaker *** this disease is rare,it is easy to be misdiagnosed or missed *** hope to improve the clinician’s awareness and vigilance of permanent pacemaker electrode perforation by analyzing the data of this case.

关键词： Pacemaker Electrode perforation

Nonlinear topological valley Hall edge states arising from type-Ⅱ Dirac cones

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Advanced Photonics 2021年第5期3卷 44-51页

作者： Hua Zhong Shiqi Xia Yiqi Zhang yongdong li Daohong Song Chunliang liu Zhigang Chen Xi’an Jiaotong University School of Electronic Science and EngineeringKey Laboratory for Physical Electronics and Devices of the Ministry of Education&Shaanxi Key Lab of Information Photonic TechniqueFaculty of Electronic and Information EngineeringXi’anChina Nankai University TEDA Applied Physics Institute and School of PhysicsMOE Key Laboratory of Weak-Light Nonlinear PhotonicsTianjinChina San Francisco State University Department of Physics and AstronomySan FranciscoCaliforniaUSA

A Dirac point is a linear band crossing point originally used to describe unusual transport properties of materials like *** recent years,there has been a surge of exploration of type-II Dirac/Weyl points using various engineered platforms including photonic crystals,waveguide arrays,metasurfaces,magnetized plasma and polariton micropillars,aiming toward relativistic quantum emulation and understanding of exotic topological *** endeavors,however,have focused mainly on linear topological states in real or synthetic Dirac/Weyl *** propose and demonstrate nonlinear valley Hall edge(VHE)states in laserwritten anisotropic photonic lattices hosting innately the type-Ⅱ Dirac *** self-trapped VHE states,manifested as topological gap quasi-solitons that can move along a domain wall unidirectionally without changing their profiles,are independent of external magnetic fields or complex longitudinal modulations,and thus are superior in comparison with previously reported topological edge *** finding may provide a route for understanding nonlinear phenomena in systems with type-Ⅱ Dirac points that violate the Lorentz invariance and may bring about possibilities for subsequent technological development in light field manipulation and photonic devices.

关键词： photonic topological insulator type-ⅡDirac cone valley Hall edge soliton

Effects of benner pury on the function of endothelial progenitor cells in vitro from patients with hypertension in a time-dependent manner

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Discussion of Clinical Cases 2016年第1期3卷 5-10页

作者： yongdong li Huihua Wen Ruizhen lian Gaole Alatan Department of Cardiology the Third Affiliated Hospital of Inner Mongolia Medical UniversityInner MongoliaChina College of life Science Inner Mongolia UniversityInner MongoliaChina

Objective:To investigate the effect of Benner Pury on Endothelial progenitor cells(EPCs)proliferation,migration,adhesion,apoptosis and oxidative stress in vitro from patients with hypertension and its time ***:The patients who were diagnosed as hypertension grade 1 according to the standard“Guidelines for Prevention and Treatment of Hypertension”were *** cells were isolated by density gradient centrifugation and stained with fluorescence chemical acetylated low density lipoprotein marked with DiI(acLDL-DiI)and fluorescein isothiocyanate(FITC)-*** staining positive cells were considered as the differentiation of *** control group included healthy subjects matched with study group in age,*** cultivated for 5 days were used for *** harvested at different set times under the stimulation of Benner Pury,and the EPCs proliferation,migration,adhesion ability,apoptosis and oxidative stress indicators were detected ***:(1)Compared with the control group,peripheral blood EPCs proliferation,migration and adhesion ability were ob-viously decreased in the hypertension group(pliferation,migration,adhesion ability and improved apoptosis and oxidative stress reaction in a time-dependent ***:Benner Pury can improve the EPCs proliferation,migration,adhesion,apoptosis and oxidative stress in patients with hypertension in a time-dependent manner.

关键词： Hypertension Endothelial progenitor cells Proliferation Migration Adhesion Apoptosis Oxidative stress

模块化多电平矩阵变换器开关次数最优的拓扑连接策略

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电工技术学报 2018年第2期33卷 342-352页

作者：李遥许烈李永东电力系统及发电设备控制和仿真国家重点实验室(清华大学电机工程与应用电子技术系) 北京100084

模块化多电平矩阵变换器(MMMC)能实现三相AC-AC的变换,具有模块化及良好的低频特性等优点,可直接用于高压大容量变频调速系统。MMMC主要包括不含支路电感的传统拓扑与包含支路电感的拓扑,不含支路电感的MMMC能减小系统的体积与重量,但... 详细信息

模块化多电平矩阵变换器(MMMC)能实现三相AC-AC的变换,具有模块化及良好的低频特性等优点,可直接用于高压大容量变频调速系统。MMMC主要包括不含支路电感的传统拓扑与包含支路电感的拓扑,不含支路电感的MMMC能减小系统的体积与重量,但调制过程中拓扑连接方式多变且调制过程非常复杂。针对不含支路电感的MMMC进行研究,建立该拓扑的开关函数模型,基于空间矢量调制提出开关次数最优的拓扑连接策略。提出的拓扑连接策略保证了拓扑开关次数最优的同时大大简化了拓扑调制过程。仿真和实验结果验证了提出拓扑连接策略的可行性。

关键词：模块化多电平矩阵变换器 AC-AC变换器拓扑连接策略开关次数最优

单级模块化多电平矩阵变换器支路间电容电压平衡

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清华大学学报（自然科学版） 2017年第11期57卷 1220-1227页

作者：李遥许烈李永东清华大学电机工程与应用电子技术系北京100084

模块化多电平矩阵变换器(MMMC)能实现三相交流系统到三相交流系统的能量变换,具有可四象限运行、系统模块化以及良好的低频特性等优点,可直接应用于高压大容量变频调速系统。传统MMMC由于不含支路空心电感,与带支路电感MMMC相比能减小... 详细信息

模块化多电平矩阵变换器(MMMC)能实现三相交流系统到三相交流系统的能量变换,具有可四象限运行、系统模块化以及良好的低频特性等优点,可直接应用于高压大容量变频调速系统。传统MMMC由于不含支路空心电感,与带支路电感MMMC相比能减小系统的体积与重量,该文针对单级传统MMMC支路电容电压,基于开关次数最优的导通支路选择策略,数值仿真分析了MMMC拓扑H桥支路电容电压的波动,在此基础上提出MMMC拓扑H桥支路间电容电压平衡策略。该策略减小了H桥支路电容电压的波动,通过实验样机验证了该策略的可行性。

关键词：模块化多电平矩阵变换器开关次数最优电压平衡

Recent impact study of automatic search function of the pacemaker atrial hysteresis on atrial arrhythmias

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Discussion of Clinical Cases 2016年第4期3卷 14-17页

作者： yongdong li Zhiping Ge Huihua Wen Anjie Xu Department of Cardiology The Third Affiliated Hospital of Inner Mongolia Medical CollegeBaotouChina

Objective:To explore the recent influences of pacemaker with automatic search function of atrial hysteresis on atrial arrhythmias,and to evaluate it clinical efficacy and ***:Indentify ADx DDD 5286 implanted dual chamber pacemaker for sick sinus syndrome in 43 *** search of atrial lag was not opened with after pacemaker implantation,and the pacemaker settings were ***-up program after 3 months,DDD mode with automatic search of atrial lag was opened,and this mode was followed up for 6 months,comparing the atrial pacing percentage and DCG atrial tachyarrhythmias of pacemaker implantation to opening atrium lag ***:Compared with the preoperative and operative 3 months later,dynamic electrocardiogram(DCG)24 h showed that the number of atrial premature beats(APB)and atrial tachycardia,atrial fibrillation(AF)array increased(pliable.

关键词： Pacemaker Artificial Arrhythmias Cardiac Automatic search Atrial delayed

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中国现代文学中的“解放”书写

中国社会科学 2021年第7期 63-87,205,206页

作者：李永东西南大学文学院重庆400715

解放观念深刻影响了中国现代文学发展,产生了意蕴深厚的“解放”书写,但此前相关研究缺乏整体视野,未能充分揭示其独特意义。中国现代文学中的“解放”书写可从解放主体、解放路径与解放范围程度三方面作综合分析:解放主体的差异产生了... 详细信息

解放观念深刻影响了中国现代文学发展,产生了意蕴深厚的“解放”书写,但此前相关研究缺乏整体视野,未能充分揭示其独特意义。中国现代文学中的“解放”书写可从解放主体、解放路径与解放范围程度三方面作综合分析:解放主体的差异产生了自我解放与被解放的分合,解放路径的不同表现为说理式解放与斗争式解放的交缠,解放范围程度的区别衍生出局部彻底解放与全面渐进解放的替嬗。解放观念受到中国共产党的有力形塑,因此,普通作家与受中国共产党解放观念影响的作家在书写“解放”时呈现出不同特征:普通作家的解放观念表达,多采取非此即彼的态度;而中国共产党解放观念影响下的“解放”书写,则使不同类型的解放观念交互作用、彼此融会,建立了“解放”书写的新形态。在建党百年之际,回望、探究中国现代文学中的“解放”书写,启示我们应全面认识“解放”的理论话语与历史实践,辩证看待自由与责任、尊重传统与大胆革新的关系,努力发掘文学创作的现实意义和思想价值。

关键词：中国现代文学 “解放”书写中国共产党解放观念