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Multistate transition and coupled solid-liquid modeling of motion process of long-runout landslide

Journal of Rock Mechanics and Geotechnical Engineering 2024年第7期16卷 2694-2714页

作者： Yang Gao Yueping yin bin Li Han Zhang Weile Wu Haoyuan Gao Institute of Geomechanics Chinese Academy of Geological SciencesChina Geological SurveyBeijing100081China Key Laboratory of Active Tectonics and Geological Safety Ministry of Natural ResourcesBeijing100081China China Institute of Geological Environment Monitoring China Geological SurveyBeijing100081China School of Geological Engineering and Geomatics Chang’an UniversityXi’an710054China

The recognition,repetition and prediction of the post-failure motion process of long-runout landslides are key scientific problems in the prevention and mitigation of geological *** this study,a new numerical method involving LPF3D based on a multialgorithm and multiconstitutive model was proposed to simulate long-runout landslides with high precision and *** following results were obtained:(a)The motion process of landslides showed a steric effect with mobility,including gradual disintegration and *** sliding mass can be divided into three states(dense,dilute and ultradilute)in the motion process,which can be solved by three dynamic regimes(friction,collision,and inertial);(b)Coupling simulation between the solid grain and liquid phases was achieved,focusing on drag force influences;(c)Different algorithms and constitutive models were employed in phase-state *** volume fraction is an important indicator to distinguish different state types and solid‒liquid *** flume experimental results were favorably validated against long-runout landslide case data;and(d)In this method,matched dynamic numerical modeling was developed to better capture the realistic motion process of long-runout landslides,and the advantages of continuum media and discrete media were combined to improve the computational accuracy and *** new method can reflect the realistic physical and mechanical processes in long-runout landslide motion and provide a suitable method for risk assessment and pre-failure prediction.

关键词： Long-runout landslide Multistate transition Mixed solid‒liquid flow Post-failure process Numerical simulation

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Geochemical Characteristics and Hydrocarbon Generation Modeling of the Paleocene Source Rocks in the Jiaojiang Sag,East China Sea Basin

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Journal of Earth Science 2024年第2期35卷 642-654页

作者： Chuang Lei Shiyan yin Jiaren Ye Jingfu Wu Zhaosheng Wang bin Gao Collaborative Innovation Center of Green Development and Ecological Restoration of Mineral Resources North China University of Science and TechnologyTangshan063210China Key Laboratory of Tectonics and Petroleum Resources China University of GeosciencesMinistry of EducationWuhan430074China CNOOC Research Institute Ltd Beijing100028China

Jiaojiang sag in the East China Sea Basin is at the earlier exploration stage,where characterizing hydrocarbon generation of source rocks is important to understand oil-gas exploration *** geochemical and basin modeling analysis,hydrocarbon generation capacity and process of the Paleocene E_(1)y,E_(1)l and E_(1)m formations were *** show that E_(1)y and E_(1)l mudstones are high-quality source rocks with Type Ⅱ kerogen,which is dominated by both aquatic organisms and terrestrial higher plants deposited in sub-reduced environment.E_(1)m mudstone interbedded with thin carbonaceous mudstone and coal is poor-quality source rock with Type Ⅲ kerogen,whose organic matter was originated from terrestrial higher plants under oxidized *** by burial and maturity histories,E_(1)y and E_(1)l source rocks experienced two hydrocarbon generation stages,which took place in the Late Paleocene and in the Middle to Late Eocene,respectively,and had high hydrocarbon generation capacity with cumulative hydrocarbon volume of 363 and 328 mg/g,respectively.E_(1)m source rock only had one hydrocarbon generation process in the Late Eocene,which had low hydrocarbon generation capacity with cumulative hydrocarbon volume of only 24 mg/*** future oil-gas exploration in the Jiaojiang sag should focus on hydrocarbon generation center and select targets in the central uplift formed before the Miocene with high-quality traps.

关键词： East China Sea Basin Jiaojiang sag source rock geochemical characteristics hydrocarbon generation basin modeling petroleum geology

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Joint Optimization of Energy Consumption and Network Latency in Blockchain-Enabled Fog Computing Networks

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China Communications 2024年第4期21卷 104-119页

作者： Huang Xiaoge yin Hongbo Cao bin Wang Yongsheng Chen Qianbin Zhang Jie School of Communications and Information Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China School of Communication and Information Engineering University of SheffieldUnited Kingdom

Fog computing is considered as a solution to accommodate the emergence of booming requirements from a large variety of resource-limited Internet of Things(IoT)*** ensure the security of private data,in this paper,we introduce a blockchain-enabled three-layer device-fog-cloud heterogeneous network.A reputation model is proposed to update the credibility of the fog nodes(FN),which is used to select blockchain nodes(BN)from FNs to participate in the consensus *** to the Rivest-Shamir-Adleman(RSA)encryption algorithm applied to the blockchain system,FNs could verify the identity of the node through its public key to avoid malicious ***,to reduce the computation complexity of the consensus algorithms and the network overhead,we propose a dynamic offloading and resource allocation(DORA)algorithm and a reputation-based democratic byzantine fault tolerant(R-DBFT)algorithm to optimize the offloading decisions and decrease the number of BNs in the consensus algorithm while ensuring the network *** results demonstrate that the proposed algorithm could efficiently reduce the network overhead,and obtain a considerable performance improvement compared to the related algorithms in the previous literature.

关键词： blockchain energy consumption fog computing network Internet of Things latency

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Max-Min Adaptive Ant Colony Optimization Approach to Multi-UAVs Coordinated Trajectory Replanning in Dynamic and Uncertain Environments

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Journal of Bionic Engineering 2009年第2期6卷 161-173页

作者： Hai-bin Duan,Xiang-yin Zhang,Jiang Wu,Guan-jun MaSchool of Automation Science and Electrical Engineering,Beihang University,Beijing 100191,P.R.China School of Automation Science and Electrical Engineering Beihang University Beijing P. R. China

Multiple Uninhabited Aerial Vehicles (multi-UAVs) coordinated trajectory replanning is one of the most complicated global optimum problems in multi-UAVs coordinated control. Based on the construction of the basic model of multi-UAVs coordinated trajectory replanning, which includes problem description, threat modeling, constraint conditions, coordinated function and coordination mechanism, a novel Max-Min adaptive Ant Colony Optimization (ACO) approach is presented in detail. In view of the characteristics of multi-UAVs coordinated trajectory replanning in dynamic and uncertain environments, the minimum and maximum pheromone trails in ACO are set to enhance the searching capability, and the point pheromone is adopted to achieve the collision avoidance between UAVs at the trajectory planner layer. Considering the simultaneous arrival and the air-space collision avoidance, an Estimated Time of Arrival (ETA) is decided first. Then the trajectory and flight velocity of each UAV are determined. Simulation experiments are performed under the complicated combating environment containing some static threats and popup threats. The results demonstrate the feasibility and the effectiveness of the proposed approach.

关键词： Multiple Uninhabited Aerial Vehicles (multi-UAVs) Ant Colony Optimization (ACO) trajectory replanning collision avoidance Estimated Time of Arrival (ETA)

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Effects of bilateral subthalamic nucleus deep brain stimulation on motor symptoms in Parkinson’s disease: a retrospective cohort study

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Neural Regeneration Research 2021年第5期16卷 905-909页

作者： Guo-Xiong Cheng Shu-bin yin ying-Hao Yang Yuan-Hu Hu Chih-Yang Huang Qian-Ming Yao Wei-Jen Ting Deparment of Neurosurgery The First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Deparment of Neurosurgery The Sixth Affiliated Hospital of Guangzhou Medical UniversityQingyuanGuangdong ProvinceChina Graduate Institute of Basic Medical Science China Medical UniversityTaichungTaiwanChina Department of Health and Nutrition Biotechnology Asia UniversityTaichungTaiwanChina College of Medicine Hualien Tzu Chi HospitalBuddhist Tzu Chi Medical FoundationTzu Chi UniversityHualienTaiwanChina Medical Research Center for Exosome and Mitochondria Related Diseases China Medical University and HospitalTaichungTaiwanChina

Deep brain stimulation of the bilateral subthalamic nucleus(STN)is a therapeutic option for patients with Parkinson’s disease(PD)in whom medical therapies have been *** retrospective cohort study analyzed the motor function of 27 patients with advanced PD,from the First Affiliated Hospital of Guangzhou Medical University,China,who received deep brain stimulation of the bilateral subthalamic nucleus and evaluated its therapeutic *** 10-year follow-up data of patients was analyzed in Qingyuan People’s Hospital,Sixth Affiliated Hospital of Guangzhou Medical University,*** follow-up data were divided into two categories based on patients during levodopa treatment(on-medication)and without levodopa treatment(off-medication).Compared with baseline,the motor function of onmedication PD patients improved after deep brain stimulation of the bilateral subthalamic *** 2 years later,the motor function of off-medication PD patients had ***-medication PD patients exhibited better therapeutic effects over the 5 years than offmedication PD ***-medication patients’akinesia,speech,postural stability,gait,and cognitive function worsened only after 5 *** results suggest that the motor function of patients with advanced PD benefitted from treatment with deep brain stimulation of the bilateral subthalamic nucleus over a period up to 5 *** overall therapeutic effects were more pronounced when levodopa treatment was combined with deep brain stimulation of the bilateral subthalamic *** study was approved by Institutional Review Board of Qingyuan People’s Hospital,The Sixth Affiliated Hospital of Guangzhou Medical University,China(approval ***-IRB-A0140)on January 11,2018.

关键词： clinical trial deep brain stimulation dopamine dyskinesia levodopa long-term follow-up neurological function Parkinson’s disease thalamus UPDRS

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Optimizing Nitrogen Fertilizer Application for Rice Production in the Taihu Lake Region,China

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Pedosphere 2012年第1期22卷 48-57页

作者： DENG Mei-Hua SHI Xiao-Jun TIAN Yu-Hua yin bin ZHANG Shao-Lin ZHU Zhao-Liang S.D.KIMURA State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008(China) College of Resources and Environments Southwest UniversityChongqing 310047(China) United Graduate School of Agriculture Science Tokyo University of Agriculture and TechnologyTokyo 1838509(Japan)

To determine the optimal amount of nitrogen(N) fertilizer for achieving a sustainable rice production at the Taihu Lake region of China,two-year on-farm field experiments were performed at four sites using various N application *** results showed that 22%-30% of the applied N was recovered in crop and 7%-31% in soils at the rates of 100-350 kg N ha *** losses increased with N application rates,from 44% of the applied fertilizer N at the rate of 100 kg N ha 1 to 69% of the N applied at 350 kg N ha *** volatilization and apparent denitrification were the main pathways of N *** N application rate of 300 kg N ha 1,which is commonly used by local farmers in the study region,was found to lead to a significant reduction in economic and environmental *** the cost for mitigating environmental pollution and the maximum net economic income,an application rate of 100-150 kg N ha 1 would be *** recommended N application rate could greatly reduce N loss from 199 kg N ha 1 occurring at the N application rate of 300 kg N ha 1 to 80-110 kg N ha 1,with the rice grain yield still reaching 7 300-8 300 kg DW ha 1 in the meantime.

关键词： economic efficiency environmental efficiency N application rate N loss rice grain yield

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Architecture and key technologies of grid geographic information system

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Science China(Technological Sciences) 2008年第S1期51卷 102-113页

作者： FANG Yu,HUANG Zhou,CHEN bin,WU Lun & yin DaFei Institute of Remote Sensing and Geographic Information System,Peking University,Beijing 100871,China Institute of Remote Sensing and Geographic Information System Peking University Beijing China

The highly efficient and stable collaborative computation platform for geospatial information can be constructed on the basis of Grid computing technology,com-bined with Peer-to-Peer (P2P) computing technology and geospatial database technology. This paper proposed the architecture and key technologies of the Grid GIS (Geographic Information System) incorporated with P2P structure,and corre-spondingly a Grid GIS prototype named Nebula was designed and then imple-mented. Nebula is a suite of middleware for geospatial Grid computing,which could be deployed onto various service nodes in network. Based on Grid protocols and infrastructure,Nebula provides invocation interfaces to users in form of Grid services. By using P2P message based communication mechanism,complex geospatial computation tasks could be accomplished by Nebula in a collaborative way. This paper introduced Nebula's architecture and key modules,and according to experimental data,we discussed the Grid GIS's advantages,application scenar-ios and future directions.

关键词： Grid GIS distributed geospatial computing Peer-to-Peer computing

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集成化酶联免疫微流控平台检测红酒中的赭曲霉毒素A

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食品安全质量检测学报 2024年第17期15卷 222-231页

作者：刘军曾施宇朱浩宇谭港江卓奥尹彬沣宿迁市产品质量监督检验所宿迁223800 扬州大学机械工程学院扬州225127

目的基于微流控芯片在自动化、检测成本上的优势,建立高效的间接竞争酶联免疫吸附法检测红酒中的赭曲霉毒素A(ochratoxin A,OTA)的方法。方法设计按压阀控制的微流控芯片,将含有OTA的样本以及其余4种免疫检测试剂注射进入芯片中。通过... 详细信息

目的基于微流控芯片在自动化、检测成本上的优势,建立高效的间接竞争酶联免疫吸附法检测红酒中的赭曲霉毒素A(ochratoxin A,OTA)的方法。方法设计按压阀控制的微流控芯片,将含有OTA的样本以及其余4种免疫检测试剂注射进入芯片中。通过负压泵驱动这些试剂分别流经包被有OTA的硅膜夹层进行检测。确定抗原和抗体的工作浓度,绘制拟合标准曲线,计算检出限,分析真实样本的加标回收率。结果抗原为鸡蛋卵白蛋白(ovalbumin,OVA)偶联的OTA,孵育质量浓度为5.0μg/mL,捕获抗体为鼠抗OTA抗体,工作质量浓度为5.0μg/mL,检测抗体为辣根过氧化物酶(horseradish peroxidase,HRP)标记的羊抗小鼠免疫球蛋白G(immunoglobulin G,IgG),稀释倍数为1:1000,OTA的线性范围为1~32 ng/mL,检出限为0.632 ng/mL,干红葡萄酒中的回收率为94.48%~105.76%;相对标准偏差为6.54%~11.18%。结论建立的方法检测成本低,灵敏度高,准确性好,可用于红酒中OTA的定量检测,为检测食品中的生物标志物提供参考。

关键词：微流控芯片间接竞争酶联免疫吸附法赭曲霉毒素A 干红葡萄酒

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Cloning and prokaryotic expression of HGLP cDNA

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Chinese Science Bulletin 2001年第13期46卷 1089-1092页

作者： ZHOU Haijun HUANG Xiaowei ZHOU Yan LI Guangtao yin bin MA Yanling PENG Xiaozhong YUAN Jiangang QIANG Boqin Institute of Basic Medical Sciences Chinese Academy of Medical Sciences&Peking Union Medical CollegeNational Center of Human Genome ResearchBeijing 100005China

A novel cDNA, HGLP, which encodes a G-protein coupled receptor (GPCR) like protein, has been isolated and cloned. The coding region of the human HGLP predicts a 7-transmembrane region protein with motifs of rhodopsin-like GPCR superfamily. Northern blot analysis reveals a 3-kb transcript in various human tissues examined. The N- and C-terminal coding regions of HGLP, which are deduced as non-transmembrane regions, have been amplified by PCR and cloned into pET30a+ vector. Then the re-combinant proteins are highly expressed in E. coli.

关键词： G-protein coupled receptor HGLP cDNA prokaryotic expression.

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The Tragic Flavors in The Merchant of Venice

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Sino-US English Teaching 2013年第2期10卷 162-167页

作者： LI Bao-feng yin bin Harbin Engineering University Harbin China

The Merchant of Venice （1914）, as one of the greatest works by Shakespeare, is a comedy. It addresses various themes. It is much more than a study of the struggles between Christians and Jews; it also deals with love and self-sacrifice, hatred and revenge, and friendship and marriage. It is a victory of Christians against Jews. But, at a more profound level, the play is ultimately a tragedy which functions as a cautionary exposure on the social problems of prejudice, hypocrisy and the family relationships. The paper begins by addressing the prejudice that is a dominant theme throughout the play. It also contends that the hypocrisy is prevalent in Venetian society. Then, Shylock, as the tragic hero in the play is analyzed. The final part deals with the problem of family relationships. By exposing grave deficiencies in Venetian Society, the play obliges us to make a critical moral judgment on humanity and establish correct philosophy of life and values

关键词： tragic flavors prejudice hypocrisy family relationships

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