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Multi-Excitation Fatigue Testing for Large Full-Scale Wind Turbine Blade

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Journal of Donghua University(English Edition) 2020年第5期37卷 417-424页

作者： pan Zujin WU jianzhong ZHANG Zhenguo School of Mechanical Engineering Tongji UniversityShanghai 200092China Shanghai Electric Wind Power Co. Ltd.Shanghai 200235China

In order to solve the problem of insufficient exciting force of equipment for large full-scale wind turbine blade fatigue testing,the influence of gravity on the performance of excitation equipment and fatigue damage evaluation of the different positions of wind turbine blades are *** the multi-excitation loading in the horizontal direction,the actuator force of the excitation equipment does not need to overcome the gravity of the dynamic mass,which directly outputs the exciting force of the system *** excitation efficiency of the equipment is 77%higher than that of the vertical *** gravity moment of the horizontal loading mode is perpendicular to the loading *** is,the mean load in the flapwise direction is *** weight of excitation equipment could replace the tuning mass on the condition that the self-weight of equipment is reduced by the multi-excitation mode,which helps the excitation equipment play the comprehensive function of excitation equipment and tuning *** the same time,the gravity moment in the edgewise direction will be decreased by 17.0%22.5%under the multi-excitation horizontal loading *** the vertical loading mode,the gravity moment is the mean load,which only increases fatigue damage accumulation by 15.6%.By comparing the role of gravity in the excitation equipment and fatigue damage evaluation,the multi-excitation horizontal loading mode has more advantage to performance the exciting force than the contribution of gravity to the fatigue damage accumulation in the vertical loading *** the fatigue testing of multi-excitation horizontal loading,the potential of excitation equipment is explored,and the problem of insufficient exciting force in large full-scale wind turbine blade fatigue testing will be solved.

关键词： wind turbine blade fatigue testing multi-excitation exciting force equivalent fatigue damage accumulation

Direct Synthesis of Structurally Divergent Indole Alkaloids from Simple Chemicals

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Chinese Journal of Chemistry 2018年第9期36卷 815-818页

作者： Tao Shen Bencong Zhu Fengguirong Lin Jun pan Jialiang Wei Xiao Luo jianzhong Liu Ning Jiao State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Xue Yuan Rd. 38 Beijing 100191 China State Key Laboratory of Organometallic Chemistry Chinese Academy of Sciences Shanghai 200062 China

A direct and structurally divergent synthesis of indole alkaloids from very simple 2-vinylanilines, alkynes and TBN via a novel substrate flag- mentation/cycloaddition strategy has been developed, which provides an efficient noble-metal-free approach to access a library of highly valuable indole derivatives of tryptamines and tryptamine-related oximes, lactams, and lactones, as well as β-carbolines, spiroindolines, and hexa-hydropyrrolo[2,3-b]- indoles.

关键词： C--C bond cleavage molecular diversity indole alkaloids trypthamines radicals

Single-axis ultrasound levitation system with annular clamping forces

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Chinese Journal of Acoustics 2019年第2期38卷 189-200页

作者： YIN Guanjun LI pan FAN Haoran GUO jianzhong Institute of Applied Acoustics School of Physics and Information TechnologyShaanxi Normal University

Based on the principle of acoustic levitation,a single-axis ultrasonic levitation system(SAULS) with convex sides was designed.A normal SAULS only provides a levitation force(LF) against the gravity of the ***,such systems also provide an annular clamping force(ACF) surrounding the levitated samples,and improve levitation stability of samples in the standing wave *** the finite-difference time-domain method,we investigated the force distributions in different resonance cavities and the factors that influence the magnitude of the levitation force in optimizing the SAULS and the *** theoretical analyses and experimental results indicate that the stability of levitation in this special SAULS is improved with the ACF from its designed convex-side *** can be developed into a simple device in levitating and moving samples steadily in related experiments and applications.

关键词： ACF Single-axis ultrasound levitation system with annular clamping forces

High spin states in stable nucleus ^(84)Sr

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Science China(Physics,Mechanics & Astronomy) 2010年第10期53卷 1861-1867页

作者： KANG XuZhong SHEN ShuiFa HAN GuangBing pan Feng GU jianzhong DRAAYER J P WU XiaoGuang ZHU LiHua WEN TingDun Key Laboratory of Nuclear Resources and Environment(East China Institute of Technology) Ministry of EducationNanchang 330013China School of Nuclear Engineering and Technology East China Institute of TechnologyFuzhou 344000China Department of Physics Liaoning Normal UniversityDalian 116029China Department of Physics and Astronomy Louisiana State UniversityBaton RougeLA 70803-4001USA School of Physics Shandong UniversityJinan 250100China China Institute of Atomic Energy Beijing 102413China Department of Physics North University of ChinaTaiyuan 030051China

High spin states of 84Sr were populated through the reaction 70Zn(18O,4n)84Sr at 75 MeV beam *** of excitation function,γ-γ coincidences,directional correlation from oriented state (DCO) ratios and γ-transition intensities were performed using eight anticompton HPGe detectors and one planar HPGe *** on the measured results,a new level scheme of 84Sr was established in which 12 new states and nearly 30 new γ-transitions were identified in the present *** positive-parity states of the new level scheme were compared with the results from calculations in the framework of the projected shell model (PSM).One negative-parity band was extended to spin Iπ=19-and it can be found that in the high spin states,the γ-transition energies show the nature of signature *** negative-parity band levels are in good agreement with deformed configuration-mixing shell model (DCM) calculations.

关键词： high spin states γ-γcoincidence DCO ratio level scheme PSM

Is tailored therapy based on antibiotic susceptibility effective?A multicenter,open-label,randomized trial

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Frontiers of Medicine 2020年第1期14卷 43-50页

作者： Jie pan Zhengchao Shi Dingsai Lin Ningmin Yang Fei Meng Lang Lin Zhencheng Jin Qingjie Zhou Jiansheng Wu jianzhong Zhang Youming Li Wenzhou Central Hospital Wenzhou 325000China The People’s Hospital of Ruian Wenzhou 325200China The Second People’s Hospital of Cangnan Wenzhou 325802China Zhiyuan Inspection Medical Institute Hangzhou 310009China The First People’s Hospital of Cangnan Wenzhou 325800China The First People’s Hospital of Pingyang Wenzhou 325400China The First Affiliated Hospital of Wenzhou Medical University Wenzhou 325000China State Key Laboratory of Infectious Disease Prevention and Control Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesChinese Center for Disease Control and PreventionBeijing 102206China National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijing 102206China The First Affiliated Hospital College of MedicineZhejiang UniversityHangzhou 310003China

An effective eradication therapy of Helicobacter pylori(***)should be used for the first *** this study,we assessed whether tailored therapy based on antibiotic susceptibility testing is more effective than traditional *** also evaluated the factors that cause treatment failure in high-resistance *** this multicenter trial,we recruited 467 ***-positive *** patients were randomly assigned to receive tailored triple therapy(TATT),tailored bismuth-containing quadruple therapy(TABQT),or traditional bismuthcontaining quadruple therapy(TRBQT).For the TATT and TABQT groups,antibiotic selection proceeded via susceptibility testing using an agar-dilution *** patients in the TRBQT group were given amoxicillin,clarithromycin,esomeprazole,and *** eradication was defined as a negative 13C-urea breath test at least eight weeks after the treatment *** testing was conducted using an agar-dilution *** eradication rate was examined via intention-to-treat(ITT)and per-protocol(PP)*** clarithromycin,levofloxacin,and metronidazole resistance rates were 26.12%,28.69%,and 96.79%,*** against amoxicillin and furazolidone was *** eradication rates for TATT,TRBQT,and TABQT were 67.32%,63.69%,and 85.99%in the ITT analysis(P<0.001)and 74.64%,68.49%,and 91.22%in the PP analysis(P<0.001),*** efficacy of TABQTwas affected by clarithromycin resistance,and bismuth exerted a direct influence on TATT *** was the most efficacious regimen for use in high-resistance regions,especially among clarithromycin-susceptible patients.

关键词： tailored triple therapy tailored bismuth-containing quadruple therapy traditional bismuth-containing quadruple therapy antibiotic susceptibility testing eradication rates

Head Motion Detection in Gaze Based Aiming

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Journal of Beijing Institute of Technology 2020年第1期29卷 9-15页

作者： Minghe Cao jianzhong Wang School of Mechatronical Engineering Beijing Institute of TechnologyBeijing 100081China

Unmanned weapons have great potential to be widely used in future *** gaze-based aiming technology can be applied to control pan-tilt weapon systems remotely with high precision and *** direction is related to head motion,which is a combination of head and eye *** this paper,a head motion detection method is proposed,which is based on the fusion of inertial and vision *** inertial sensors can measure rotation in high-frequency with good performance,while vision sensors are able to eliminate *** combining the characteristics of both sensors,the proposed approach achieves the effect of highfrequency,real-time,and drift-free head motion *** experiments show that our method can smooth the outputs,constrain drifts of inertial measurements,and achieve high detection accuracy.

关键词： gaze aiming head motion detection visual-inertial information fusion

K-Nearest Neighbor Based Missing Data Estimation Algorithm in Wireless Sensor Networks

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Wireless Sensor Network 2010年第2期2卷 115-122页

作者： Liqiang pan jianzhong Li 不详

In wireless sensor networks, the missing of sensor data is inevitable due to the inherent characteristic of wireless sensor networks, and it causes many difficulties in various applications. To solve the problem, the missing data should be estimated as accurately as possible. In this paper, a k-nearest neighbor based missing data estimation algorithm is proposed based on the temporal and spatial correlation of sensor data. It adopts the linear regression model to describe the spatial correlation of sensor data among different sensor nodes, and utilizes the data information of multiple neighbor nodes to estimate the missing data jointly rather than independently, so that a stable and reliable estimation performance can be achieved. Experimental results on two real-world datasets show that the proposed algorithm can estimate the missing data accurately.

关键词： Missing Data Estimation Wireless Sensor Networks

黑龙江省玉米地方品种主要农艺性状综合评价及优异种质资源筛选

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作物杂志 2024年第4期 103-112页

作者：马延华孙德全李绥艳林红潘丽艳李东林范金生吴建忠杨国伟黑龙江省农业科学院草业研究所黑龙江哈尔滨150086

研究黑龙江省玉米地方品种表型性状的多样性并筛选优异玉米种质,为地方品种优异性状深入研究提供理论基础。对来自黑龙江省的152个玉米地方品种的12个农艺性状进行2年大田鉴定,分析其表型多样性,通过主成分分析和聚类分析进行类群划分... 详细信息

研究黑龙江省玉米地方品种表型性状的多样性并筛选优异玉米种质,为地方品种优异性状深入研究提供理论基础。对来自黑龙江省的152个玉米地方品种的12个农艺性状进行2年大田鉴定,分析其表型多样性,通过主成分分析和聚类分析进行类群划分和表型综合评价。结果表明,不同性状变异系数为3.48%~31.23%,平均值18.16%,Shanon-Weaver多样性指数为1.73~2.08,平均值2.02。三江平原温和半湿润区玉米地方品种的多样性较低,但该地区玉米地方品种综合性状较优良,丰产性好,是优良种质较为集中的区域。12个农艺性状的主成分分析结果显示,前5个主成分因子已包含9个农艺性状,累计贡献率达73.93%,这些性状可作为黑龙江省玉米地方品种鉴定与评价的主要指标。聚类分析结果显示,供试品种可划分为6个类群,其中类群Ⅴ综合性状最好,适合作为高产玉米品种选育的基础材料。根据综合得分F值筛选出表现优异的地方品种20份。

关键词：玉米地方品种农艺性状综合评价黑龙江省

Mechanism underlying the retarded nuclear translocation of androgen receptor splice variants

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Science China(Life Sciences) 2019年第2期62卷 257-267页

作者： Ye Liu Yinyu Wang Fangfang Wang Jiexue pan Jingjing Xu Jingyi Li Chengliang Zhou Guolian Ding Yanting Wu Xinmei Liu jianzhong Sheng Hefeng Huang The International Peace Maternity and Child Health Hospital Shanghai Jiao Tong University School of Medicine The Key Laboratory of Reproductive Genetics (Ministry of Education) Zhejiang University Department of Pathophysiology Zhejiang University School of Medicine

As shown in our previous study, two alternatively spliced androgen receptor(AR) variants, which are exclusively expressed in the granulosa cells of patients with polycystic ovary syndrome, exhibit retarded nuclear translocation compared with wild-type AR. However, researchers have not yet determined whether these abnormalities correlate with heat shock protein 90(HSP90)and importin α(the former is a generally accepted co-chaperone of AR, and the latter is a component of classical nuclear import complexes). Here, these two variants were mainly retained in cytoplasm with HSP90 and importin α in the presence of dihydrotestosterone(DHT), and their levels in nucleus were significantly reduced, according to the immunofluorescence staining. The binding affinity of two AR variants for importin α was consistently decreased, while it was increased in WT-AR following DHT stimulation, leading to reduced nuclear import, particularly for the insertion-AR(Ins-AR). However, the binding affinities of two AR variants for HSP90 were increased in the absence of DHT compared with WT-AR, which functioned to maintain spatial structural stability, particularly for the deletion-AR(Del-AR). Therefore, the retarded nuclear translocation of two AR variants is associated with HSP90 and importin α, and the abnormal binding affinities for them play critical roles in this process.

关键词： androgen receptor splice variants nuclear translocation heat shock protein 90 importin α polycystic ovary syndrome