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life Prediction Based on Transient Dynamics Analysis of Van Semi-trailer with Air Suspension System

Chinese Journal of Mechanical Engineering 2011年第3期24卷 372-379页

作者： li liang song jian he lin zhang mengjun li hongzhi State Key Laboratory of Automotive Safety and Energy Tsinghua University Beijing 100084 China

The early fatigue damage in the van-body of the semi-trailer is often caused by the unique mechanical characteristics and the dynamic impact of the *** traditional finite element method with static strength analysis cannot support the fatigue design of van-body;thus,the dynamics analysis should be adopted for the endurance *** accurate dynamics model to describe the transient impacts of all kinds of uneven road and the proper system transfer functions to calculate the load transfer effects from tire to van-body are two critical factors for transient dynamics *** order to evaluate the dynamic performance,the dynamics model of the trailer with the air suspension is brought *** the analysis method of the power spectral density （PSD） is set up to study the transient responses of the road dynamic *** transient responses transferred from axles to van-body are calculated,such as dynamic stress,dynamic RMS acceleration,and dynamic load *** on the above dynamic responses,the fatigue life of van-body is predicted with the finite element analysis （FEA） *** the test parameters of the trailer with air suspension,the simulation system with Matlab/Simulink is constructed to describe the dynamic responses of the impacts of the tested PSD of the vehicle axles,and then the fatigue life is predicted with FEA *** simulated results show that the vibration level of the van-body with air suspension is reduced and the fatigue life is *** real vehicle tests on different roads are carried out,and the test results validate the accuracy of the simulation *** proposed fatigue life prediction method is effective for the virtual design of auto-body.

关键词： van-body air suspension system transient dynamics power spectral density (PSD) life prediction

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Real-time Tire Parameters Observer for Vehicle Dynamics Stability Control

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Chinese Journal of Mechanical Engineering 2010年第5期23卷 620-626页

作者： li liang li hongzhi zhang Xiaolong he lin song jian State Key Laboratory of Automotive Safety and Energy Tsinghua University Beijing 100084 China

The performance of the vehicle dynamics stability control system（DSC） is dominated by the accurate estimation of tire forces in *** characteristics of tire forces are determined by tire dynamic states and parameters,which vary in an obviously large scope along with different working ***,there have been many methods based on the nonlinear observer to estimate the tire force and dynamic parameters,but they were only used in off-line analysis because of the computation complexity and the dynamics differences of four tires in the steering maneuver conditions were not considered *** paper develops a novel algorithm to observe tire parameters in real-time controller for *** algorithm is based on the sensor-fusion technology with the signals of DSC sensors,and the tire parameters are estimated during a set of maneuver *** calibrated tire parameters in the control cycle are treated as the elementary states for vehicle dynamics observation,in which the errors between the calculated and the measured vehicle dynamics are used as the correcting factors for the tire parameter observing *** test process with a given acceleration following a straight line is used to validate the estimation method of the longitudinal stiffness;while the test process with a given steering angle is used to validate the estimated value of the cornering *** ground test result shows that the proposed algorithm can estimate the tire stiffness accurately with an acceptable computation cost for real-time controller only using DSC sensor *** proposed algorithm can be an efficient algorithm for estimating the tire dynamic parameters in vehicle dynamics stability control system,and can be used to improve the robustness of the DSC controller.

关键词： tire longitudinal stiffness cornering stiffness vehicle dynamics stability

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Characterizing a large outbreak of dengue fever in Guangdong Province, China

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Infectious Diseases of Poverty 2016年第1期5卷 368-375页

作者： jian-Peng Xiao jian-Feng he Ai-Ping Deng Hua-liang lin Tie song Zhi-Qiang Peng Xiao-Cheng Wu Tao liu Zhi-Hao li Shannon Rutherford Wei-lin Zeng Xing li Wen-Jun Ma Yong-Hui zhang Guangdong Provincial Institute of Public health Guangdong Provincial Center for Disease Control and PreventionGuangzhouChina Guangdong Provincial Center for Disease Control and Prevention GuangzhouChina School of Public health Sun Yat-sen UniversityGuangzhouChina Center for Environment and Population health Griffith UniversityBrisbaneAustralia

Background:Dengue cases have been reported each year for the past 25 years in Guangdong Province,China with a recorded historical peak in *** study aims to describe the epidemiological characteristics of this large outbreak in order to better understand its epidemic factors and to inform control ***:Data for clinically diagnosed and laboratory-confirmed dengue fever cases in 2014 were extracted from the China Notifiable Infectious Disease Reporting *** analyzed the incidence and characteristics of imported and indigenous cases in terms of population,temporal and spatial ***:A total of 45224 dengue fever cases and 6 deaths were notified in Guangdong Province in 2014,with an incidence of 47.3 per 100000 *** elderly(65+years)represented 11.7%of total indigenous cases with the highest incidence(72.3 per 100000).Household workers and the unemployed accounted for 23.1%of indigenous *** majority of indigenous cases occurred in the 37th to 44th week of 2014(September and October)and almost all(20 of 21)prefecture-level cities in Guangdong were *** to the non-Pearl River Delta Region,the Pearl River Delta Region accounted for the majority of dengue cases and reported cases earlier in *** virus serotypes 1(DENV-1),2(DENV-2)and 3(DENV-3)were detected and DENV-1 was predominant(88.4%).Conclusions:Dengue fever is a serious public health problem and is emerging as a continuous threat in Guangdong *** is an urgent need to enhance dengue surveillance and control,especially for the high-risk populations in high-risk areas.

关键词： Dengue fever Epidemiology Outbreak China

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基于改进RBF网的汽车侧偏角估计方法试验研究

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机械工程学报 2010年第22期46卷 105-110页

作者：张小龙李亮李红志贺林宋健清华大学汽车安全与节能国家重点实验室北京100084 安徽农业大学工学院合肥230036

基于汽车稳定性控制系统配置传感器信号,利用改进径向基神经网络技术对车身和车轮侧偏角进行估计。对径向基网络基本最小二乘算法提出3条改进措施以获得合适的网络结构、提高网络的泛化能力和计算实时性。构建车身和前轮侧偏角、电子稳... 详细信息

基于汽车稳定性控制系统配置传感器信号,利用改进径向基神经网络技术对车身和车轮侧偏角进行估计。对径向基网络基本最小二乘算法提出3条改进措施以获得合适的网络结构、提高网络的泛化能力和计算实时性。构建车身和前轮侧偏角、电子稳定程序(Electronic stability program,ESP)传感器信号测试道路试验系统,进行典型高附路面试验,并提取数据样本用于网络的学习和测试。通过网络结构和性能参数交叉验证,确定网络结构为4-12-2,扩展常数为9,目标学习误差及其梯度分别为0.025和0.05。由验证样本测试网络对车身和前轮侧偏角的估计精度分别为0.5°和0.8°。基于PC平台对网络预测实时性进行测试。结果表明所构建的网络在精度和实时性方面能够较好地满足ESP控制器对侧偏角的监控要求。

关键词：汽车测试侧偏角估计改进径向基网络

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GRB 190530A:From Precursor,Prompt Emission to Afterglow all Originated from Synchrotron Radiation

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Research in Astronomy and Astrophysics 2022年第6期22卷 22-32页

作者： Hui-Ya liu Xiang-Gao Wang li-Ping Xin Zi-Min Zhou liang-Jun Chen Bing li Yuan-Gui Yang Qi Luo Cheng-Kui li Shao-lin Xiong ling-Jun Wang Xu-Hui Han li-Ming song jian-Yan Wei En-Wei liang Shuang-Nan zhang Guangxi Key Laboratory for Relativistic Astrophysics Department of PhysicsGuangxi UniversityNanning 530004China GXU-NAOC Center for Astrophysics and Space Sciences Nanning 530004China CAS Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China School of Physics and Electronic Information Huaibei Normal UniversityHuaibei 235000China

GRB 190530A was jointly observed by the High Energy X-ray Telescope of the Hard X-ray Modulation Telescope(Insight-HXMT/he)and the Ground-Based Wide-Angle Camera network(GWAC-N)with the extremely large field of *** triggered by Insight-HXMT/he and Fermi/GBM,we observed the optical emission of GRB 190530A,using the 30 cm telescope of GWAC(GWAC-F30)to search and locate its *** observation of the late afterglow of GRB 190530A was made with the 2.16 m telescope at Xinglong *** this paper,we make a detailed exploration of the origin of GRB *** the prompt emission,a“double-tracking”pattern is presented both for the low-energy spectral indexαand the peak energy Epin the Band function with Insight-HXMT/he and Fermi/GBM data;the results of GRB 190530A are consistent with the Amati and Yonetoku correlations;the spectral lag(τ)versus energy(E)can be estimated withτ=-3.0±0.06+(0.17±0.03)*** synchrotron radiation can account for the origin of GRB190530A prompt emission ***αand Epof the precursor are essentially the same as that of the main prompt emission,implying that they have the same *** the afterglow,it can be described with the external forward shock model in ISM circumburst *** summary,from precursor,prompt emission to afterglow of GRB 190530A all originated from synchrotron radiation.

关键词： (stars)gamma-ray burst:individual(GRB 190530A)-(stars)gamma-ray burst general-virtual observatory tools

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Improved Brassica rapa reference genome by single-molecule sequencing and chromosome conformation capture technologies

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Horticulture Research 2018年第1期5卷 373-383页

作者： Lei zhang Xu Cai jian Wu Min liu Stefan Grob Feng Cheng jianli liang Chengcheng Cai Zhiyuan liu Bo liu Fan Wang song li Fuyan liu Xuming li lin Cheng Wencai Yang Mai-he li Ueli Grossniklaus Hongkun Zheng Xiaowu Wang Institute of Vegetables and Flowers Chinese Academy of Agricultural Science100081BeijingChina College of Horticulture China Agricultural University100193BeijingChina Biomarker Technologies Corporation 101300BeijingChina Department of Plant and Microbial Biology University of Zürich8008ZürichSwitzerland Shandong Provincial Key Laboratory of Protected Vegetable Molecular Breeding Shandong Shouguang Vegetable Seed Industry Group Co.Ltd262700ShouguangShandong ProvinceChina Forest Dynamics Swiss Federal Research Institute WSL8903BirmensdorfSwitzerland

Brassica rapa comprises several important cultivated vegetables and oil *** reference genome assemblies of Brassica rapa are quite fragmented and not highly contiguous,thereby limiting extensive genetic and genomic ***,we report an improved assembly of the *** genome(v3.0)using single-molecule sequencing,optical mapping,and chromosome conformation capture technologies(Hi-C).Relative to the previous reference genomes,our assembly features a contig N50 size of 1.45 Mb,representing a~30-fold *** also identified a new event that occurred in the *** genome~1.2 million years ago,when a long terminal repeat retrotransposon(LTR-RT)*** analysis refined the relationship of genome blocks and accurately located the centromeres in the *** *** *** genome v3.0 will serve as an important community resource for future genetic and genomic studies in *** resource will facilitate breeding efforts in ***,as well as comparative genomic analysis with other Brassica species.

关键词： species. conformation breeding

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Geology and mineralization of the Tiegelongnan supergiant porphyry-epithermal Cu(Au, Ag) deposit(10 Mt) in western Tibet, China: A review

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China Geology 2022年第1期5卷 136-159页

作者： Huan-huan Yang Qin Wang Yan-bo li Bin lin Yang song Yi-yun Wang Wen he Hong-wei li She li jian-li li Chang-cheng liu Shi-bin Feng Tang Xin Xue-lian Fu Xin-juan liang Qi zhang Bei-qi Wang Yang li MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China College of Earth Sciences Chengdu University of TechnologyChengdu 610059China No.5 Geological Brigade of the Tibet Bureau of Geology and Mineral Exploration and Development Golmud 816000China Chengdu Center of China Geological Survey Ministry of Natural ResourcesChengdu 610081China Chinalco Tibet Mining Co. Ltd.Lhasa 850000China School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China

The Tiegelongnan Cu(Au,Ag)deposit in central Tibet contains more than 10 Mt of copper ranking 29 th in the *** is characterized by typical porphyry-epithermal alteration and *** order to improve the understanding of porphyry-epithermal copper deposit in Tibet,new zircon U-Pb age and sulfur isotope data along with published data in the Tiegelongnan are presented to investigate the formation and preservation ***-related intrusive rocks in the Tiegelongnan including Early Cretaceous(about 120 Ma)granodiorite porphyry and diorite porphyry are closely related to the northward subduction of Bangongco-Nujiang *** mainly comes from deep magma,and ore-forming fluid is affected by both magmatic and meteoric *** metallogenic setting of Tiegelongnan is consistent with those of Andean porphyry copper deposits in South *** cover of the Meiriqiecuo Formation volcanic rocks,Lhasa-Qiangtang collision and India-Eurasian collision have significance in the preservation and uplift of the *** formation,preservation and discovery of Tiegelongnan play an important role in exploration of ancient porphyry-epithermal deposits in Tibet.

关键词： Giant porphyry-epithermal copper deposit Mineralization and alteration Formation and preservation mechanism Tiegelongnan Duolong ore district Early Cretaceous Mineral exploration engineering Bangongco-Nujiang metallogenic belt Tibet

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Paired quasi-periodic pulsations of hard X-ray emission in a solar flare

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Science China(Physics,Mechanics & Astronomy) 2023年第5期66卷 195-206页

作者： Hai-Sheng Zhao Dong li Shao-lin Xiong Yan-Qiu zhang Yang Su Wei Chen Yi Zhao Xiao-Bo li Jia-Cong liu Wen-Xi Peng Rui Qiao Xin-Qiao li Xiang-Yang Wen li-Ming song Shi-Jie Zheng Xin-Ying song Xiao-Yun Zhao Yue Huang Shuang-Nan zhang Shuo Xiao Ce Cai Zheng-Hua An Can Chen Gang Chen Wei Chen Yan-Qi Du Min Gao Ke Gong Dong-Ya Guo Zhi-Wei Guo jian-jian he Bin li Chao li Chao-Yang li Gang li jian-Hui li Lu li Qing-Xin li Yan-Guo li Jing liang Xiao-Hua liang Jin-Yuan liao Xiao-Jing liu Ya-Qing liu Qi Luo Xiang Ma Bin Meng Ge Ou Dong-li Shi Jing-Yan Shi Gong-Xing Sun Xi-Lei Sun You-li Tuo Chen-Wei Wang Hui Wang Jin Wang Jin-Zhou Wang Ping Wang Wen-Shuai Wang Hong Wu Sheng-Lun Xie Yan-Bing Xu Yu-Peng Xu Wang-Chen Xue Sheng Yang Min Yao jian-Ying Ye Qi-Bin Yi Chao-Yue zhang Da-li zhang Fan zhang Fei zhang Hong-Mei zhang Kai zhang Peng zhang Xiao-Lu zhang Zhen zhang Guo-Ying Zhao Shi-Yi Zhao Chao Zheng Xing Zhou Yue Zhu Key Laboratory for Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China University of Chinese Academy of Sciences Beijing 100049China Department of Astronomy Beijing Normal UniversityBeijing 100875China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China Physics and Space Science College China West Normal UniversityNanchong 637002China Key Laboratory of Stellar and Interstellar Physics and Department of Physics Xiangtan UniversityXiangtan 411105China Institute of Astrophysics Central China Normal UniversityWuhan 430079China School of Physics Changchun University of Science and TechnologyChangchun 130022China College of Physics and Engineering Qufu Normal UniversityQufu 273165China College of Physics Sciences&Technology Hebei UniversityBaoding 071002China

We investigate high time resolution data obtained by the Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor(GECAM)during the flare event on 2022 April 21 at 01:52 *** subpeaks with durations of 4-6 s have been detected in the hard X-ray precursor phase,and the key feature is that they appear in pairs and seem like double-peak *** subpeaks are rarely observed in hard X-ray band and confirmed by the microwave obtained by Nobeyama Radio Polarimeters(NoRP)and Radio Solar Telescope Network(RSTN).While an exponential function can describe the continuum component of the time profile from the precursor to part of the impulsive *** periods of quasi-periodic pulsations(QPPs)are detected to be about 7.3 and 12.8 s for the precursor and impulsive phase,respectively,with at least 95%confidence *** paired QPPs are assumed to be double-peak QPPs and then the scenario of current loop coalescence model is found to be in good agreement with our *** precursor phase can be interpreted as the oscillating coalescence of two islands,while the impulsive phase can be interpreted as more islands to coalesce one by one to form larger islands.

关键词： solar flare QPPs loop coalescence circular-ribbon flare

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Efficacy and safety of Shenyankangfu Tablet,a Chinese patent medicine,for primary glomerulonephritis:A multicenter randomized controlled trial

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Journal of Integrative Medicine 2021年第2期19卷 111-119页

作者： Jie Wu Shu-wei Duan Hong-tao Yang Yue-yi Deng Wei li Ya-ni he Zhao-hui Ni Yong-li Zhan Shan lin Zhi-yong Guo Jun Zhu Jing-ai Fang Xu-sheng liu li-hua Wang Rong Wang Nian-song Wang Xiao-hong Cheng li-qun he Ping Luo Shi-ren Sun Ji-feng Sun Ai-ping Yin Geng-ru jiang Hong-yu Chen Wen-hu liu Hong-li lin Meng liang Lu Ma Ming Chen li-qun song jian Chen Qing Zhu Chang-ying Xing Yun li Ji-ning Gao Rong-shan li Ying li Hao zhang Ying Lu Qiao-ling Zhou Jun-zhou Fu Qiang he Guang-yan Cai Xiang-mei Chen Department of Nephrology Chinese People’s Liberation Army General HospitalChinese People’s Liberation Army Institute of NephrologyState Key Laboratory of Kidney Diseases(2011DAV00088)National Clinical Research Center for Kidney DiseasesBeijing 100853China Department of Nephrology First Teaching Hospital of Tianjin University of Traditional Chinese MedicineTianjin 300192China Department of Nephrology Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai 200032China Department of Nephrology Shandong University of Traditional Chinese Medicine Affiliated HospitalJinan 250011.Shandong ProvinceChina Department of Nephrology Daping HospitalArmy Medical UniversityChongqing 400042China Department of Nephrology Renji HospitalShanghai Jiao Tong UniversityShanghai 200127China Department of Nephrology Guang’anmen HospitalChina Academy of Traditional Chinese Medical SciencesBeijing 100053China Department of Nephrology Tianjin Medical University General HospitalTianjin 300052China Department of Nephrology Changhai Hospital of ShanghaiNaval Medical UniversityShanghai 200433China Department of Nephrology West China HospitalChengdu 610083Sichuan ProvinceChina Department of Nephrology First Affiliated Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of Nephrology Guangdong Provincial Hospital of Chinese MedicineGuangzhou 510120Guangdong ProvinceChina Department of Nephrology Shanxi Medical University Second Affiliated HospitalTaiyuan 030001Shanxi ProvinceChina Department of Nephrology Shandong Provincial HospitalJinan 250021Shandong ProvinceChina Department of Nephrology and Rheumatology Affiliated Sixth People’s HospitalShanghai Jiao Tong UniversityShanghai 200233China Department of Nephrology Shaanxi Traditional Chinese Medicine HospitalXi'an 710003Shaanxi ProvinceChina Department of Nephrology Shuguang HospitalShanghai University of Traditional Chinese MedicineShanghai 200021China Department of Nephrology Jilin University Se

Background:Shenyankangfu Tablet(SYKFT)is a Chinese patent medicine that has been used widely to decrease proteinuria and the progression of chronic kidney ***:This trial compared the efficacy and safety of SYKFT,for the control of proteinuria in primary glomerulonephritis patients,against the standard drug,losartan ***,setting,participants and intervention:This was a multicenter,double-blind,randomized,controlled clinical *** glomerulonephritis patients,aged 18-70 years,with blood pressure≤140/90 mmHg,estimated glomerular filtration rate(eGFR)>45 mL/min per 1.73 ㎡,and 24-hour proteinuria level of 0.5-3.0 g,were recruited in 41 hospitals across 19 provinces in China and were randomly divided into five groups:SYKFT,losartan potassium 50 mg or 100 mg,SYKFT plus losartan potassium 50 mg or 100 *** outcome measu res:The primary outcome was change in the 24-hour proteinuria level,after 48 weeks of ***:A total of 735 participants were *** percent decline of urine protein quantification in the SYKFT group after 48 weeks was 8.78%±2.56%(P=0.006)more than that in the losartan 50 mg group,which was 0.51%±2.54%(P=1.000)less than that in the losartan 100 mg *** with the losartan potassium 50 mg group,the SYKFT plus losartan potassium 50 mg group had a 13.39%±2.49%(Phe losartan potassium 100 mg group,the SYKFT plus losartan potassium 100 mg group had a 9.77%±2.52%(P=0.001)greater reduction in urine *** a superiority threshold of 15%,neither was statistically ***,serum creatinine and serum albumin from the baseline did not change statistically *** average change in TCM syndrome score between the patients who took SYKFT(-3.00[-6.00,-2.00])and who did not take SYKFT(-2.00[-5.00,0])was statistically significant(P=0.003).No obvious adverse reactions were observed in any ***:SYKFT decreased the proteinur

关键词： herbal medicine,Chinese Shenyankangfu Tablet Primary glomerulonephritis Randomized controlled trial Double blind Double dummy

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Large area^(3)he tube array detector with modular design for multi‑physics instrument at CSNS

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Nuclear Science and Techniques 2023年第1期34卷 1-12页

作者： lin Zhu jian‑Rong Zhou Yuan‑Guang Xia liang Xiao Hong Luo Xiao‑Juan Zhou Wen‑Qin Yang Bei‑Ju Guan Xing‑Fen jiang Yan‑Feng Wang Hong Xu Hai‑Yun Teng li‑Xin Zeng Jia‑Jie li Lei Hu Ke Zhou Yong‑Xiang Qiu Pei‑Xun Shen Jun Xu li‑jiang liao Xiao‑Zhuang Wang Gui‑An Yang Huai‑Chan Chen Ju‑Ping Xu Zhi‑Duo li song‑lin Wang jian Zhuang Yu‑Bin Zhao Jun‑Rong zhang Wen Yin Zhi‑Jia Sun Yuan‑Bo Chen Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China University of Chinese Academy of Sciences Beijing 100049China

The multi-physics instrument(MPI)is the first user cooperative instrument at the China Spallation Neutron Source(CSNS).It was designed to explore the structures of complex materials at multiple scales based on the neutron total scattering *** imposes the requirements for the detector,including a high detection efficiency to reduce the measurement time and a large solid angle coverage to cover a wide range of momentum *** satisfy these demands,a large-area array of 3he-filled linear position-sensitive detectors(LPSDs)was constructed,each with a diameter of 1 inch and pressure of 20 *** uses an orbicular layout of the detector and an eight-pack module design for the arrangement of 3he LPSDs,covering a range of scattering angles from 3°to 170°with a total detector area of approximately 7 *** detector works in air,which is separated from the vacuum environment to facilitate installation and *** characteristics of the MPI detector were investigated through Monte Carlo(MC)simulations using Geant4 and experimental *** results suggest that the detectors are highly efficient in the wavelength range of the MPI,and an efficiency over 25%is achievable for above 0.1 A neutrons.A minimal position resolution of 6.4 mm full width at half maximum(FWHM)along the tube length was achieved at a working voltage of 2200 V,and a deviation below 2 mm between the real and measured positions was attained in the beam *** detector module exhibited good consistency and an excellent counting rate capacity of up to 80 kHz,which satisfied the requirements of experiments with a high event *** of its operation over the past year have shown that the detector works steadily in sample experiments,which allows the MPI to serve the user program successfully.

关键词： Neutron detector LPSD Position resolution Counting rate capacity

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