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Spatial Distribution of Large-scale Landslides Induced by the 5.12 Wenchuan Earthquake

Journal of Mountain Science 2011年第2期8卷 246-260页

作者： xu qiang zhang shuai li weile State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of Technology Chengdu 610059 China

The 5.12 Wenchuan Earthquake in 2008 induced hundreds of large-scale landslides. This paper systematically analyzes 112 large-scale landslides (surface area > 50000 m2), which were identified by interpretation of remote sensing imagery and field investigations. The analysis suggests that the distribution of large-scale landslides is affected by the following four factors: (a) distance effect: 80% of studied large-scale landslides are located within a distance of 5 km from the seismic faults. The farther the distance to the faults, the lower the number of large-scale landslides; (b) locked segment effect: the large-scale landslides are mainly located in five concentration zones closely related with the crossing, staggering and transfer sections between one seismic fault section and the next one, as well as the end of the NE fault section. The zone with the highest concentration was the Hongbai-Chaping segment, where a great number of large-scale landslides including the two largest landslides were located. The second highest concentration of large-scale landslides was observed in the Nanba-Donghekou segment at the end of NE fault, where the Donghekou landslide and the Woqian landslide occurred; (c) Hanging wall effect: about 70% of the large-scale landslides occurred on the hanging wall of the seismic faults; and (d) direction effect: in valleys perpendicular to the seismic faults, the density of large-scale landslides on the slopes facing the seismic wave is obviously higher than that on the slopes dipping in the same direction as the direction of propagation of the seismic wave. Meanwhile, it is found that the sliding and moving directions of large-scale landslides are related to the staggering direction of the faults in each section. In Qingchuan County where the main fault activity was horizontal twisting and staggering, a considerable number of landslides showed the feature of sliding and moving in NE direction which coincides with the staggering direction of th

关键词： 5.12 Wenchuan Earthquake Landslides Distribution pattern Direction effect Locked segment effect

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Facile synthesis of hierarchical NiO/NiFe_(2)O_(4) microsphere composite as efficient visible photocatalyst for 2,4-DCP degradation

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Rare Metals 2024年第4期43卷 1580-1588页

作者： Shabana Shaheen shuai xu Ji Bian Amir Zada Zi-Qing zhang Yang Qu li-qiang Jing Key Laboratory of Functional Inorganic Materials Chemistry(Ministry of Education) International Joint Research Center and Lab for Catalytic TechnologySchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin150080China Department of Chemistry Abdul Wali Khan UniversityMardan23200Pakistan

It is highly desired to develop efficient photocatalysts with recycling property for practical application to degrade toxic ***,nanosheet-assembled NiFe_(2)O_(4)microspheres with commendable activity are successfully synthesized by a facile solvothermal reaction with NH4F as the modifier,and their photoactivities are further improved by coupling with NiO through an in situ growth *** optimized nickel oxide(NiO)/nickel ferrite(NiFe_(2)O_(4))microsphere composite(5NiO/NFO-4)exhibits a satisfactory photocatalytic activity for 2,4-dichlorophenol(2,4-DCP)degradation under visible-light irradiation,which is attributed to its wide visible-light response,well-designed hierarchical structure and enhanced charge transfer and separation by coupling NiO as a high-level energy platform to accept ***,it is found that the NiO/NiFe_(2)O_(4)microsphere photocatalysts can be easily collected and recycled owing to the distinctive magnetic *** work provides a feasible route to rational design visible-light-driven photocatalysts with high-activity for environmental remediation and purification with good recyclability.

关键词： NiFe_(2)O_(4) microspheres NiO/Fe_(2)O_(4) composite Charge separation Visible-light photocatalysis 2 4-Dichlorophenol degradation

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Accelerating the Control and Elimination of Major Parasitic Diseases in China—On World NTD Day 2024

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China CDC weekly 2024年第6期6卷 95-99页

作者： Yuwan Hao Tian Tian Zelin Zhu Yijun Chen Jing xu shuai Han Menbao Qian Yi zhang Shizhu li qiang Wang National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute of Parasitic DiseasesChinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)Key Laboratory on Parasite and Vector BiologyMinistry of HealthWHO Centre for Tropical Diseases National Center for International Research on Tropical Diseases Ministry of Science and TechnologyShanghaiChinaSchool of Global HealthChinese Center for Tropical Diseases Research-Shanghai Jiao Tong University School of MedicineShanghaiChina

Neglected tropical diseases(NTDs)are a group of diseases associated with poverty that affect over 1 billion people worldwide(1).On May 31,2021,the World Health Assembly(WHA)officially recognized January 30 as World Neglected Tropical Diseases Day through decision WHA74(18).This designation aims to raise awareness about the severe impact of NTDs on disadvantaged populations and to mobilize support for control,elimination,and eradication efforts.

关键词： Diseases diseases disadvantage

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基于冬小麦高光谱图像的天然气微泄漏胁迫区域提取

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光谱学与光谱分析 2024年第3期44卷 770-776页

作者：李辉刘姁升蒋金豹陈绪慧张帅唐珂赵新伟杜兴强玉龙飞雪中国四维测绘技术有限公司北京100086 鄂尔多斯应用技术学院内蒙古鄂尔多斯017000 中国矿业大学(北京)地球科学与测绘工程学院北京100083 生态环境部卫星环境应用中心北京100094 中国资源卫星应用中心北京100094

天然气在能源结构中逐渐占据重要地位。由于天然气管道和储气库常年埋藏于地下,无氧腐蚀、自然灾害、注入井和管道口松懈等因素会导致气体发生泄漏。在地下储存天然气大规模泄漏之前确定泄漏点的位置并做出早期判断和预警十分必要。以... 详细信息

天然气在能源结构中逐渐占据重要地位。由于天然气管道和储气库常年埋藏于地下,无氧腐蚀、自然灾害、注入井和管道口松懈等因素会导致气体发生泄漏。在地下储存天然气大规模泄漏之前确定泄漏点的位置并做出早期判断和预警十分必要。以冬小麦为研究对象,采集4期高光谱图像数据,融合其图像、空间、时相特征,探寻天然气胁迫下冬小麦胁迫范围半径和时长之间的关系,并间接探测天然气微泄露点。一方面对连续统去除后的冬小麦高光谱图像数据进行连续小波变换并利用CWT_(mexh)指数[CWT_(mexh)=CW_(770)^(2)/(1-CW_(487))×CW_(550)]对高光谱胁迫组图像进行微泄露点信息提取,另一方面提取高光谱图像数据的PCA特征,基于SVM分类器提取天然气胁迫区域。最后将天然气微泄露识别结果进行数学形态学分析,并利用最小二乘对胁迫区域进行圆曲线拟合,探索天然气泄漏胁迫半径与胁迫天数的关系。结果表明:(1)CWT_(mexh)指数应用到成像高光谱数据表现出较好的识别性能;(2)SVM分类器可基于光谱差异性特征识别冬小麦胁迫区域,分类精度较好,最大分类精度可以达到99.25%,Kappa系数为0.97,且识别精度随天然气胁迫持续而增加;(3)冬小麦受胁迫区域半径和通气天数呈现强烈的线性相关。因此,结果表明,在冠层尺度和低空尺度通过高光谱遥感监测地表植被间接识别天然气微泄漏点具有可行性,可以预测地下天然气微泄漏随着时间变化引起的胁迫区域变化。该工作为星载高光谱遥感监测地下储存天然气泄漏点提供科学依据,为以后的工程应用提供技术支持。

关键词：天然气微泄漏冬小麦高光谱图像空间特征

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我国重点寄生虫病疫情形势及防控工作重点

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中国寄生虫学与寄生虫病杂志 2024年第1期42卷 1-7页

作者：王强许静夏志贵韩帅张仪钱门宝李石柱周晓农中国疾病预防控制中心寄生虫病预防控制所(国家热带病研究中心) 传染病溯源预警与智能决策全国重点实验室国家卫生健康委员会寄生虫病原与媒介生物学重点实验室世界卫生组织热带病合作中心科技部国家级热带病国际研究中心上海200025

经过70余年有效防治,我国重点寄生虫病防治工作成效显著,正向控制和消除目标迈进。本文分析了近年来我国血吸虫病、疟疾、棘球蚴病、内脏利什曼病、华支睾吸虫病和土源性线虫病等重点寄生虫病的疫情形势和面临的挑战,提出了下一步工作... 详细信息

经过70余年有效防治,我国重点寄生虫病防治工作成效显著,正向控制和消除目标迈进。本文分析了近年来我国血吸虫病、疟疾、棘球蚴病、内脏利什曼病、华支睾吸虫病和土源性线虫病等重点寄生虫病的疫情形势和面临的挑战,提出了下一步工作方向和重点任务,为加快推进全国重点寄生虫病控制和消除进程提供参考。

关键词：寄生虫病疫情形势控制消除

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Structure optimization of the organ-pipe cavitating nozzle and its erosion ability test on hydrate-bearing sediments

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Petroleum Science 2023年第2期20卷 1104-1118页

作者： Xiao-Ya Wu Yi-Qun zhang Zhen-qiang xu shuai Zhao Gen-Sheng li Shou-Ceng Tian Ya-Wen Tan Ke-Wen Peng College of Petroleum Engineering China University of Petroleum-BeijingBeijing102249China College of Safety and Ocean Engineering China University of Petroleum-BeijingBeijing102249China State Key Laboratory of Natural Gas Hydrate China University of Petroleum-BeijingBeijing102249China National Engineering Research Center of Gas Hydrate Exploration and Development Guangzhou Marine Geological SurveyGuangzhou510075GuangdongChina Guangdong Provincial Key Laboratory of Distributed Energy Systems Dongguan University of TechnologyDongguan523808GuangdongChina

Cavitating jet is a promising drilling rate improvement technology in both the marine natural gas hydrate (NGH) fluidization exploitation method and the integrated radial jet drilling and completion method. In present study, we aim to improve the efficiency of jet erosion and extracting NGH. With a computational fluid dynamics (CFD) method, the pressure, velocity and cavitation field characteristics of organ-pipe cavitating jet (OPCJ) are analysed. The divergent angle, throat length, and divergent length of OPCJ nozzle are preferred to obtain stronger jet cavitation erosion effect. Laboratory experiments of gas hydrate-bearing sediments (GHBS) erosion by OPCJ and conical jet (CJ) are conducted to compare and validate the jet erosion performance. The impinging models of OPCJ and CJ are constructed to study the impact characteristics. Results show that the preferred values of divergent angle, throat length, and divergent length are 15°, 1d, and 3d, respectively, in present simulation conditions. For GHBS, the OPCJ possesses the advantages of high efficiency and low energy consumption. Moreover, the OPCJ has higher penetration efficiency, while showing equivalent penetration ability compared to CJ. During the impinging process, the OPCJ can induce stronger impact pressure and turbulence effect, and also shows stronger chambering effect and bottom cleaning ability compared to CJ. This study presents the erosion performance of OPCJ and CJ on GHBS, and provides preliminary insights on the potential field applications in NGH exploitation.

关键词： Natural gas hydrate Cavitating jet Structure optimization Computational fluid dynamics Experimental study

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心肌收缩调节器在心力衰竭患者中的短期有效性及安全性研究

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中华心血管病杂志 2024年第4期52卷 391-396页

作者：郭衍楷尚帅孙天恒樊永强贾索尔·肖克热提祖克拉·吐尔洪杨徐张玲李耀东芦颜美张疆华邢强周贤惠汤宝鹏新疆医科大学第一附属医院心脏中心起搏电生理科新疆心电生理与心脏重塑重点实验室乌鲁木齐830054

目的探讨心肌收缩调节器(CCM)在心力衰竭患者中的短期有效性及安全性。方法该研究为横断面研究,纳入2022年2至6月于新疆医科大学第一附属医院接受CCM置入的心力衰竭患者。随访3个月,监测CCM感知、阻抗、输出百分比、工作时间,比较患者... 详细信息

目的探讨心肌收缩调节器(CCM)在心力衰竭患者中的短期有效性及安全性。方法该研究为横断面研究,纳入2022年2至6月于新疆医科大学第一附属医院接受CCM置入的心力衰竭患者。随访3个月,监测CCM感知、阻抗、输出百分比、工作时间,比较患者术前及术后3个月左心室射血分数值(LVEF)、6 min步行试验距离和纽约心脏协会(NYHA)心功能分级,记录并发症及不良事件发生情况。结果纳入的9例患者均成功置入CCM。其中男性7例,年龄(56±14)岁,3例患者为缺血性心肌病,6例患者为扩张性心肌病。术后3个月随访结果显示,CCM阈值平稳,感知较术中下降[右心室:(8.2±1.1)mV比(16.3±7.0)mV,P0.05)。患者未有因心力衰竭症状加重再次入院,无恶性心律失常事件发生,且胸闷、气短等症状明显缓解。术后未发现囊袋血肿、囊袋感染及破溃、电极脱落、瓣膜功能损害、心包积液、心脏穿孔等相关并发症。结论CCM具有较好的短期安全性及有效性。

关键词：心力衰竭心肌收缩调节器 6 min步行试验

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围术期规范营养管理对老年髋部骨折患者康复的影响

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保健医学研究与实践 2024年第3期21卷 43-48页

作者：罗帅张强许泽川黄宏杰李青刘江川陈铭成都医学院第二附属医院/核工业四一六医院脊柱骨科成都610051

目的研究围术期规范营养管理对老年髋部骨折患者术后加速康复的影响,以期为临床决策的制定提供参考。方法选取我院2021年2月—2022年7月住院患者中符合纳入标准的老年髋部骨折患者60例作为研究对象,采用随机数字表法分为试验组及对照组... 详细信息

目的研究围术期规范营养管理对老年髋部骨折患者术后加速康复的影响,以期为临床决策的制定提供参考。方法选取我院2021年2月—2022年7月住院患者中符合纳入标准的老年髋部骨折患者60例作为研究对象,采用随机数字表法分为试验组及对照组,每组30例。试验组患者予以围术期规范营养管理,对照组患者予以术后常规饮食指导。记录患者住院时间,术后并发症情况,首次下床时间,入院时、术后第1天、第7天血清白蛋白、前白蛋白水平以及术后第7天Barthel(BI)评分作为结局指标。结果试验组患者的平均住院时间为(14.64±0.98)d,短于对照组的(15.28±0.76)d,差异具有统计学意义(P0.05);术后第1天,试验组患者前白蛋白水平高于对照组,差异有统计学意义(P<0.05);术后第7天,试验组患者血清白蛋白、前白蛋白水平均显著高于对照组,差异均有统计学意义(P<0.05)。试验组患者术后第7天BI评分为(47.83±5.68)分,明显高于对照组的(42.17±5.20)分,差异具有统计学意义(P<0.05)。结论围术期规范营养管理相比常规术后饮食指导可以缩短老年髋部骨折患者的平均住院时间及术后首次下床时间,降低术后并发症总发生率,改善患者术后营养状态,并对提高患者生活自理能力有一定帮助,值得临床推广使用。

关键词：围术期营养老年髋部骨折加速康复

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Molecular imaging:design mechanism and bioapplications

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Science China Chemistry 2023年第5期66卷 1336-1383页

作者： Lanlan Chen Yifan Lyu xuan zhang liting Zheng Qingqing li Ding Ding Fengming Chen Yihao liu Wei li Yutong zhang Qiuling Huang Zhiqiang Wang Tiantian Xie qiang zhang Yingyu Sima Ke li shuai xu Tianbing Ren Mengyi Xiong Ying Wu Jibin Song lin Yuan Huanghao Yang Xiao-Bing zhang Weihong Tan Molecular Science and Biomedicine Laboratory(MBL) State Key Laboratory of Chemo/Biosensing and Chemomet-ricsCollege of Chemistry and Chemical EngineeringAptamer Engineering Center of Hunan ProvinceHunan UniversityChangsha 410082China Key Laboratory for Analytical Science of Food Safety and Biology(Ministry of Education) College of ChemistryFuzhou UniversityFuzhou 350108China College of Chemistry Beijing University of Chemical TechnologyBeijing 100029China The Cancer Hospital of the University of Chinese Academy of Sciences(Zhejiang Cancer Hospital) Institute of Basic Medicine and Cancer(IBMC)Chinese Academy of SciencesHangzhou 310022China Institute of Molecular Medicine(IMM) State Key Laboratory of Oncogenes and Related Genes Renji HospitalShanghai Jiao Tong University School of MedicineCollege of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China School of Chemistry and Chemical Engineering University of JinanJinan 250022China

Molecular imaging is a non-invasive method to image and analyze the concentration and activity of functional biomolecules in cells or in vivo at molecular level,and plays an increasing role in deep understanding of biological processes,early and accurate diagnosis of diseases,and evaluation of ***,numerous novel molecular imaging probes have been developed,involving every biomedical imaging modality,such as optical imaging,photoacoustic imaging,magnetic resonance imaging,single-photon-emission computed tomography,and positron emission *** this review,we summarize the development of current state-of-the-art molecular imaging *** introduce the design strategies of molecular probes and detailed imaging modalities,and highlight the properties of probes and biomedical imaging applications in cells and in vivo,including disease diagnosis,drug tracking,and imaging-guided *** we discuss the perspectives and challenges in this emerging *** expect this review could inspire more effective molecular imaging probes to be developed,achieving the goal towards clinical practices.

关键词： molecular imaging imaging probes multimodality biomedical applications diseases diagnosis

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Bioprinted constructs that simulate nerve-bone crosstalk to improve microenvironment for bone repair

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Bioactive Materials 2023年第9期27卷 377-393页

作者： Tianchang Wang Wentao li Yuxin zhang Xiang xu Lei qiang Weiqiang Miao Xiaokun Yue Xin Jiao Xianhao Zhou Zhenjiang Ma shuai li Muliang Ding Junfeng Zhu Chi Yang Hui Wang Tao li Xin Sun Jinwu Wang Shanghai Key Laboratory of Orthopedic Implant Department of Orthopedic SurgeryShanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineNo.639 Zhizaoju RoadShanghai200011China Sports Medicine Department Beijing Key Laboratory of Sports InjuriesPeking University Third HospitalNo.49North Garden RoadHaidian DistrictBeijing100191China Peking University Institute of Sports Medicine No.49North Garden RoadHaidian DistrictBeijing100191China Department of Oral Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityNational Center for StomatologyNational Clinical Research Center for Oral DiseasesShanghai Key Laboratory of StomatologyShanghai200011China School of Materials Science and Engineering Southwest Jiaotong UniversityChengdu610031China Department of Orthopedics The First Affiliated HospitalZhejiang University School of Medicine79 Qingchun RdHangzhou310003China Department of Orthopaedics The Second Xiangya HospitalCentral South UniversityChangsha410001HunanChina Institute of Rehabilitation Medicine School of Rehabilitation ScienceShanghai University of Traditional Chinese MedicineEngineering Research Center of Traditional Chinese Medicine Intelligent RehabilitationMinistry of EducationShanghai201210China Department of Orthopedic Surgery Xin Hua Hospital Affiliated with Shanghai Jiao Tong University School of MedicineNo.1665Kongjiang RoadShanghai200092China

Crosstalk between nerves and bone is essential for bone repair,for which Schwann cells(SCs)are crucial in the regulation of the *** that exosomes are critical paracrine mediators for intercellular communication that exert important effects in tissue repair,the aim of this study is to confirm the function and molecular mechanisms of Schwann cell-derived exosomes(SC-exos)on bone regeneration and to propose engineered constructs that simulate SC-mediated nerve-bone *** promoted the proliferation and differentiation of bone marrow mesenchymal stem cells(BMSCs)through *** molecular mechanism studies demonstrated that SC-exos promoted BMSC osteogenesis by regulating the TGF-βsignaling pathway via ***,SC-exos promoted the migration and tube formation performance of endothelial progenitor ***,the SC-exos@G/S constructs were developed by bioprinting technology that simulated SC-mediated nerve-bone crosstalk and improved the bone regeneration microenvironment by releasing SC-exos,exerting the regulatory effect of SCs in the microenvironment to promote innervation,vascularization,and osteogenesis and thus effectively improving bone repair in a cranial defect *** study demonstrates the important role and underlying mechanism of SCs in regulating bone regeneration through SC-exos and provides a new engineered strategy for bone repair.

关键词： Schwann cells Microenvironment Nerve-bone crosstalk Exosomes Bioprinting

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