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GiT-based structural geologic feature analysis of the southern segment of Longmenshan fault zone for earthquake evidence

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Journal of Mountain Science 2016年第5期13卷 906-916页

作者： YE Cheng-ming cui peng Saied PIRASTEH Jonathan LI MENG Qingkai BI Xiao-jia ZHANG Jian-qiang Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610041China Key Lab.of Earth Exploration and Information Technology of Ministry of Education Chengdu University of TechnologyChengdu 610059China Department of Geography and Environmental Management Faculty of EnvironmentUniversity of WaterlooWaterlooOntarioCanada N2L 3G1Canada Chengdu Earthquake Mitigation Bureau Chengdu 610042China

The Longmenshan fault is a thrust fault which runs along the base of the Longmen Mountains in Siehuan province, southwestern China. The southern segment of the fault had two distinct responses to the Ms 8 Wenehuan and Ms 7 Lushan earthquakes. This study determines characteristics of the structural geology of the Longmenshan fault to evaluate how it influenced the two aforementioned earthquakes. This research was done within a Geo- information Technologies （GiT） environment based on multi-source remote sensing and crustal movement data extracted from the Global Positioning System （GPS）. The spatial distribution of the southern segment of the Longmenshan fault zone was comprehensively analyzed to study both earthquakes. The study revealed that the Wenehuan and Lushan earthquakes occurred on two relatively independent faults. In addition, there was a nearly constant-velocity crustal movement zone between the two epicenters that probably had a compressive stress with slow motion. Furthermore, the central fault and a mountain back fault gradually merged from north to south. The Lushan earthquake of the Wenchuan earthquake. was not an affershock The research showed that fault zones within 30-50 km of State Highway 318 are intensive and complex. In addition, crustal movement velocity decreased rapidly, with a strong multi-directional shear zone. Thus, activity in that zone was likely stronger than in the northern part over the medium to long term.

关键词： Longmenshan fault zone Geoinformation Technologies (GiT) Remote Sensing (RS) Earthquake Crustal movement

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Modeling Study of Fruit Morphological Formation in Melon

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Agricultural Sciences in China 2011年第5期10卷 714-720页

作者： CHANG Li-ying NIU Qing-liang MIAO Yu-bin HE San-peng cui Chong HUANG Dan-feng School of Agriculture and Biology Shanghai Jiaotong University Shanghai 200240 P.R.China

Modeling of fruit morphological formation in melon is important for realizing virtual and digital plant *** objective of this study was to characterize the changes in patterns of fruit growth characters during plant *** cultivar experiments,a high-resolution wireless vision sensor network has been developed to realize non-contact automatic uninterrupted measurement of the fruit shape micro-change （fruit size,color,and net）.Results showed that the fruit swelling process （vertical and horizontal diameters） exhibited a slow-rapid-slow pattern,which could be well described with a logistic curve against growing degree days （GDD）;fruit color changes based on the RGB values could be represented by quadratic relationship to cumulative GDD;the fruit net changes over growth progress could be partitioned into three phases according to the time *** first phase was from 1 to 30 days after pollination （DAP）,in which the vertical stripe appeared at fruit middle part and the horizontal stripe at fruit petiole and hilum part as well;the second phase was from 30 to 40 DAP,the horizontal stripe occurred at fruit middle part and the net was formed;the third phase was the process started from 40 DAP,the netted breadth and thickness were gradually *** model was validated with the independent data from the experiment,and the mean RMSE （root mean square error） of fruit were 0.36 and 0.28 cm for vertical and horizontal diameters,11.9 for fruit color,and 0.45 cm for stripe length and diameter at varied GDD,*** work is beneficial to a reliable foundation for study the relationship between morphological formation and physiological change of the melon fruit internally and then realize the intelligent precision management to improve the yield and quality of greenhouse melon production.

关键词： melon (Cucumis melo L.) morphological formation model fruit diameter fruit color fruit net growing degreedays (GDD)

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Seismogenic fault and topography control on the spatial patterns of landslides triggered by the 2017 Jiuzhaigou earthquake

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Journal of Mountain Science 2018年第4期15卷 793-807页

作者： WU Chun-hao cui peng LI Yu-sheng Irasema Alcántara AYALA HUANG Chao YI Shu-jian Key Laboratory of Mountain Surface Process and Hazards Institute of Mountain Hazards and Environment Chinese Academy of Science Chengdu 610041 China University of Chinese Academy of Science Beijing 100049 China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of Sciences Beijing 100101 China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China Universidad Nacional Autónoma de México Instituto de Geografía Circuito Exterior s/n Ciudad Universitaria México D.F. Distrito Federal MX 04510

Jiuzhaigou National Park, located in northwest plateau of Sichuan Province, is a UNESCO World Heritage Site, and one of the most popular scenic areas in China. On August 8, 2017, a Mw 6.5 earthquake occurred 5 km to the west of a major scenic area, causing 25 deaths and injuring 525, and the Park was seriously affected. The objective of this study was to explore the controls of seismogenic fault and topographic factors on the spatial patterns of these landslides. Immediately after the main shock, field survey, remote-sensing investigations, and statistical and spatial analysis were undertaken. At least 2212 earthquake-triggered landslides were identified, covering a total area of 11.8 km^2. Thesewere mainly shallow landslides and rock falls. Results demonstrated that landslides exhibited a close spatial correlation with seismogenic faults. More than 85% of the landslides occurred at 2200 to 3700 m elevations. The largest quantity of landslides was recorded in places with local topographic reliefs ranging from 200 to 500 m. Slopes in the range of ~20°-50° are the most susceptible to failure. Landslides occurred mostly on slopes facing east-northeast(ENE), east(E), east-southeast(ESE), and southeast(SE), which were nearly vertical to the orientation of the seismogenic fault slip. The back-slope direction and thin ridge amplification effects were documented. These results provide insights on the control of the spatial pattern of earthquake-triggered landslides modified by the synergetic effect of seismogenic faults and topography.

关键词： 2017 Jiuzhaigou earthquake Landslide Seismogenic fault Topography Spatial pattern

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Evaluating the use of three-dimensional reconstruction visualization technology for precise laparoscopic resection in gastroesophageal junction cancer

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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1311-1319页

作者： Dan Guo Xiao-Yan Zhu Shuai Han Yu-Shu Liu Da-peng cui Department of Hepatobiliary Surgery The First Affiliated Hospital of Hebei North UniversityZhangjiakou 075000Hebei ProvinceChina Department of Anesthesiology The First Affiliated Hospital of Hebei North UniversityZhangjiakou 075000Hebei ProvinceChina

BACKGROUND Laparoscopic gastrectomy for esophagogastric junction(EGJ)carcinoma enables the removal of the carcinoma at the junction between the stomach and esophagus while preserving the gastric function,thereby providing patients with better treatment outcomes and quality of ***,this surgical technique also presents some challenges and ***,three-dimensional reconstruction visualization technology(3D RVT)has been introduced into the procedure,providing doctors with more comprehensive and intuitive anatomical information that helps with surgical planning,navigation,and outcome *** To discuss the application and advantages of 3D RVT in precise laparoscopic resection of EGJ *** Data were obtained from the electronic or paper-based medical records at The First Affiliated Hospital of Hebei North University from January 2020 to June 2022.A total of 120 patients diagnosed with EGJ carcinoma were included in the *** these,68 underwent laparoscopic resection after computed tomography(CT)-enhanced scanning and were categorized into the 2D group,whereas 52 underwent laparoscopic resection after CT-enhanced scanning and 3D RVT and were categorized into the 3D *** study had two outcome measures:the deviation between tumor-related factors(such as maximum tumor diameter and infiltration length)in 3D RVT and clinical reality,and surgical outcome indicators(such as operative time,intraoperative blood loss,number of lymph node dissections,R0 resection rate,postoperative hospital stay,postoperative gas discharge time,drainage tube removal time,and related complications)between the 2D and 3D *** Among patients included in the 3D group,27 had a maximum tumor diameter of less than 3 cm,whereas 25 had a diameter of 3 cm or *** actual surgical observations,24 had a diameter of less than 3 cm,whereas 28 had a diameter of 3 cm or *** findings were consistent between the two methods(χ^(2)=0.346,P=0.556),w

关键词： Gastroesophageal junction cancer Endoscopy Tumor resection Three-dimensional reconstruction visualization Two-dimensional imaging computed tomography

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Two-dimensional Numerical Model for Debris Flows in the Jiangjia Gully,Yunnan Province

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Journal of Mountain Science 2011年第6期8卷 757-766页

作者： peng Hong ZHAO Yanxin cui peng ZHANG Wanshun CHEN Xuejiao CHEN Xiaoqing College of Water Resources and Hydropower Engineering Wuhan University Wuhan 430072 China School of Resource and Environmental Science Wuhan University Wuhan 43o079 China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China

Debris flows are recurrent natural hazards in many mountainous *** paper presents a numerical study on the propagation of debris flows in natural erodible open channels,in which the bed erosion and sedimentation processes are *** on the Bingham fluid theory,a mathematical model of the two-dimensional non-constant debris flow is *** governing equations include the continuity and momentum conservation equations of debris flow,the sediment convection-diffusion equation,the bed erosion-deposition equation and the bed-sediment size gradation adjustment *** yield stress and shear stress components are included to describe the dynamic rheological *** upwind control-volume Finite Volume Method (FVM) is applied to discretize the convection *** improved SIMPLE algorithm with velocity-free-surface coupled correction is developed to solve the equations on non-orthogonal,quadrilateral *** model is applied to simulate a debris flow event in Jiangjia Gully,Yunnan Province and to predict the flow pattern and bed erosion-deposition *** results show the effectiveness of the proposed numercial model in debris flow simulation and potential hazard analysis.

关键词： Debris flow Numerical simulation SIMPLE algorithm Finite Volume Method Hazardanalysis Jiangjia Gully

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Neurological Manifestations of Takayasu Arteritis

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Chinese Medical Sciences Journal 2011年第4期26卷 227-230页

作者： Li-xin Zhou Jun Ni Shan Gao Bin peng Li-ying cui Department of Neurology Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China

Objective To investigate the clinical neurological manifestations of Takayasu arteritis (TA). Methods A retrospective study was conducted with 63 consecutive TA cases admitted to Peking Union Medical College Hospital from January 2009 to May 2010. All the patients fulfilled the diagnostic criteria of TA by the American College of Rheumatology. Among the 63 TA patients, 27 with neurological manifestations were included in the present study. All the patients were evaluated using standardized neurological examination, sonography, computed tomography (CT) angiography, and cerebral CT or magnetic resonance imaging. Results Dizziness and visual disturbance were the most common symptoms, which occurred in 20 (74.1%) and 16 (59.3%) patients respectively. Another common symptom was headache, observed in 15 (55.6%) patients. Six (22.2%) patients had suffered from ischemic stroke; 7 (25.9%) patients had epileptic seizures. Two (7.4%) patients were diagnosed as reversible posterior encephalopathy syndrome (RPES) based on typical clinical and imaging manifestations. Conclusions Neurological manifestations are common symptoms in TA patients in the chronic phase, including dizziness, visual disturbance, headache, ischemic stroke, seizures, and some unusual ones such as RPES. We suggested RPES be included into the differential diagnosis of acute neurological changes in TA.

关键词： Takayasu arteritis neurological manifestation epileptic seizures reversible posterior encephalopathy syndrome

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The Research and Design Of 3D Web Guide System Based On WebGL

The Research and Design Of 3D Web Guide System Based On WebG...

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第26届中国控制与决策会议

作者： cui peng Eastern Liaoning University Institute of Information Technology

ISBN: (纸本)9781479937097

The development of virtual reality technology made it possible to run 3D program on the Web. This 3D guide system used *** class library based on WebGL to import 3D model into this system to build 3D scenes, then controlled the scene through the Javascript, and calculated the optimal path between scenes and scenes in the system by combining A* algorithm with the breadth-first search algorithm to enrich the function of the application system. This system can be applied to guide in the large amusement parks and large shopping malls. It is a new kind of advertising for enterprises and also a new attempt of 3D Web application.

关键词： WebGL three.js javascript

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Editorial

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Journal of Mountain Science 2004年第1期1卷 1-2页

作者： Yu Dafu, Managing editor cui peng, Editor in chief

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Scientific challenges of research on natural hazards and disaster risk

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Geography and Sustainability 2021年第3期2卷 216-223页

作者： peng cui Jianbing peng Peijun Shi Huiming Tang Chaojun Ouyang Qiang Zou Lianyou Liu Changdong Li Yu Lei Key Laboratory of Mountain Hazards and Surface Process/Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610041China China-Pakistan Joint Research Center on Earth Sciences CAS-HECIslamabad 45320Pakistan Department of Geological Engineering Chang’an UniversityXi’an 710054China State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing 100875China Faculty of Engineering China University of GeosciencesWuhan 430074China

As a discipline,the science of natural hazards and disaster risk aims to explain the spatial-temporal pattern,process and mechanism,emergency response and risk mitigation of natural hazards,which requires a multidisci-plinary and interdisciplinary *** the support of Natural Science Finance of China(NSFC)and Chinese Academy of Sciences(CAS),in-depth research and systematic analysis on natural hazards and disaster risk were *** this paper,the state of the art in research on natural hazards is summarized from seven aspects:formation process,mechanism and dynamic of natural hazards,disaster risk assessment,forecast,monitoring and early warning,disaster mitigation,emergency treatment and rescue,risk management and post-disaster *** trends within the natural hazards and disaster risk as a discipline were identified,along with existing shortcomings and significant gaps that need to be *** paper highlighted:1)the scientific challenges including the frontier scientific issues and technological gaps on natural hazards and disaster risk dis-cipline from 2025 to 2035 in China,and 2)the proposal to develop a systemic and holistic natural hazards and disaster risk discipline.

关键词： Natural hazards Disaster risk Discipline Progress Challenge Development goals

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Prediction of Debris-flow Danger Area by Combining Hydrological and Inundation Simulation Methods

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Journal of Mountain Science 2011年第1期8卷 1-9页

作者： cui peng Key Laboratory of Mountain Hazards and Earth Surface Process Chinese Academy of Sciences Chengdu 610041 China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 China Graduate School of Chinese Academy of Sciences Beijing 100049 China

Debris flows have caused serious human casualties and economic losses in the regions strongly affected by the Ms8.0 Wenchuan earthquake of 2oo8. Debris flow mitigation and risk assessment is a key issue for reconstruction. The existing methods of inundation simulation are based on historical disasters and have no power of prediction. The rain- flood method can not yield detailed flow hydrograph and does not meet the need of inundation simulation. In this paper, the process of water flow was studied by using the Arc-SCS model combined with hydraulic method, and then the debris flow runoff process was calculated using the empirical formula combining the result from Arc-SCS. The peak discharge and runoff duration served as input of inundation simulation. Then, the dangerous area is predicted using kinematic wave method and Manning equation. Taking the debris flow in Huashiban gully in Beichuan County, Sichuan Province, China on 24 Sep. 2oo8 as example, the peak discharge of water flow and debris flow were calculated as 35.52 m3·s-1 and 215.66 m3·s-, with error of 4.15% compared to the measured values. The simulated area of debris-flow deposition was 161,500 m2, vs. the measured area of 144,097 m2, in error of 81.75%. The simulated maximum depth was 12.3 m, consistent with the real maximum depth between lO and 15 m according to the field survey. The minor error is mainly due to the flow impact on buildings and variations in cross-section configuration. The present methodology can be applied to predict debrisflow magnitude and evaluate its risk in other watersheds inthe earthquake area.

关键词： Debris flow Arc-SCS model Inundation simulation Risk analysis Wenchuan earthquake

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