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Application of oblique photogrammetry technique in geological hazard identification and decision management

Earthquake Research Advances 2024年第3期4卷 34-41页

作者： Min Tang Xi Mei Yanna Li Chen Chen xiuju liu Heng Lu China Railway Eryuan Engineering Group CO.LTD Chengdu610031China School of Environment and Resource Southwest University of Science and TechnologyMianyang621000China State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu610065China College of Hydraulic and Hydroelectric Engineering Sichuan UniversityChengdu610065China Chengdu Planning Information Technic Center Chengdu610042China

With the continuous development of the oblique photography technique, it has been used more and more widely in the field of geological disasters. It can quickly obtain the three-dimensional(3D) real scene model of dangerous mountainous areas under the premise of ensuring the safety of personnel while restoring the real geographic information as much as possible. However, geological disaster areas are often accompanied by many adverse factors such as cliffs and dense vegetation. Based on this, the paper introduced the flight line design of oblique photogrammetry, analyzed the multi-platform data fusion processing, studied the multi-period data dynamic evaluation technology and proposed the application methods of data acquisition, early warning, disaster assessment and decision management suitable for geological disaster identification through the analysis of actual cases, which will help geologists to plan and control geological work more scientifically and rationally, improve work efficiency and reduce the potential personnel safety hazards in the process of geological survey, to offer technical support to the application of oblique photogrammetry in geological disaster identification and decision making and provide the scientific basis for personal and property safety protection and later-stage geological disaster management in disaster areas.

关键词： Oblique photography technique Three-dimensional models Geological hazards Data integration Disaster assessment Decision management

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Base-controlled NHC-Ru-catalyzed transfer hydrogenation andα-methylation/transfer hydrogenation of ketones using methanol

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Chinese Chemical Letters 2024年第7期35卷 276-280页

作者： Ming Huang xiuju Cai Yan liu Zhuofeng Ke School of pharmacy School of clinical pharmacyGuangdong Pharmaceutical UniversityGuangzhou 510006China School of Materials Science&Engineering PCFM LabSchool of ChemistrySun Yat-sen UniversityGuangzhou 510275China School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China

Herein,we report the NHC-Ru catalyst system that realizes the chemo-selective transformation of ketones with *** simply changing the base,a broad range of structurally diverse ketones,could be selectively and efficiently converted to the correspondingβ-methylated secondary alcohols or secondary ***,this catalytic system was very effective for the synthesis of bio-related molecules and deuterated alcohols,as well as the three-component coupling between methyl ketones,primary alcohols,and *** reaction mechanism was further revealed by experiment and DFT mechanistic investigations.

关键词： Ru complexes Methanol Ketones β-Methylated secondary alcohols Transfer hydrogenation

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汶川震区山洪灾害场次洪水最大携沙量预测模型

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时空信息学报 2024年第2期31卷 216-228页

作者：许懿娜段乐刘超聂锐华李乃稳刘秀菊任妮鲁恒中铁二院工程集团有限责任公司成都610083 四川大学水利水电学院成都610065 成都市规划编制研究与应用技术中心成都610051 中国通信工业协会城乡建设数字化专业委员会北京100037

汶川地震后,震区产生了大量松散堆积体,受强降水影响产生了破坏性更强的山洪灾害,加剧了灾害的危险性,增加了灾害防治的困难度,研究震区山洪灾害可为评估灾害的风险性及后续的管理提供依据。本研究以66处历史山洪灾害作为样本数据,进行... 详细信息

汶川地震后,震区产生了大量松散堆积体,受强降水影响产生了破坏性更强的山洪灾害,加剧了灾害的危险性,增加了灾害防治的困难度,研究震区山洪灾害可为评估灾害的风险性及后续的管理提供依据。本研究以66处历史山洪灾害作为样本数据,进行可量算影响因子的相关性分析,揭示山洪灾害的携沙量影响机制,确定流域面积、主沟长度、相对高差、物源量四个影响因子作为主控因子,基于SPSS进行非线性回归分析,建立了基于场次洪水最大携沙量及最大携沙距离的估算模型,并选取了汶川县和都江堰市的共23处山洪水沙灾害数据进行了模型的验证且与其他模型对比。结果表明,本研究建立的模型可靠性好,精度更高。研究成果有助于预测汶川震区潜在的山洪水沙灾害区域,为山洪水沙灾害的风险评估提供依据。

关键词：汶川震区山洪灾害携沙量最大携沙距离预测模型

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Highly Soluble Phenylethynyl-terminated Imide Oligomers and Thermosetting Polyimides Based on 2,2′3,3′-Biphenyltetracarboxylic Dianhydride

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Chemical Research in Chinese Universities 2019年第3期35卷 530-536页

作者： MENG Xiangsheng LU Gewu liu xiuju MENG Qingjie SHI Junwei YUAN Hang KE Hongjun WANG Xianwei FAN Weifeng liu Jingfeng YAN Jingling WANG Zhen Laboratory of Polymer Composites Engineering Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022P.R.China Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo 315201P.R.China Aerospace Research Institute of Special Materials and Technology Beijing 100076P.R.China Shandong Non-metallic Materials Institute Jinan 250031P.R.China

The properties of a series of imide oligomers were characterized according to their molecular weights, solubility, and thermal and rheological properties. This series of imide oligomers was synthesized via a two-step method using 2,2′,3,3′-biphenyltetracarboxylic dianhydride(3,3′-BPDA) and aromatic diamines as the monomers, and 4-phenylethynyl phtlialic anhydride(PEPA) as the end-capping agent. The imide oligomers based on 3,3′-BPDA showed excellent solubility in low boiling point solvents and low melt viscosity, which were attributed to their unique bent architectures. High-performance thermosetting polyimides were produced from these oligomers via thermal crosslinking of the phenylethynyl groups. The mechanical and thermal properties of the thermosets were studied using tensile testing, dynamic mechanical thermal analysis(DMTA), and thermogravimetric analysis(TGA). The 3,3′EPDA-based thermosets exhibited excellent thermal properties, with glass transition temperatures of up to 455℃, and 5% mass loss temperatures of up to 569℃ in air. The thermosets based on 3,3-BPDA showed superior thermal properties compared to those derived from TriA-X series oligomers.

关键词： 2,2′,3,3′-Biphenyltetracarboxylic dianhydride Phenylethynyl-terminated imide oligomer Solubility Processability Thermosetting polyimide

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Vegetation Restoration Monitoring in Yingxiu Landslide Area after the 2008 Wenchuan Earthquake

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Earthquake Research in China 2020年第1期34卷 157-166页

作者： HE Jing ZHANG Keke liu xiuju liu Gang ZHAO Xuqiang XIE Zhongyuan LU Heng College of Earth Sciences Chengdu University of TechnologyChengdu 610059China State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China China Petroleum Engineering and Construction Corp.Southwest Company Chengdu 610017China Chengdu Planning Information Technic Center Chengdu 610042China State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu 610065China College of Hydraulic and Hydroelectric Engineering Sichuan UniversityChengdu 610065China

A total of more than 50000 landslides has occurred in Sichuan province since the"5·12"Wenchuan earthquake,resulting in serious damage to the surface vegetation in southwestern *** this study,we select Yingxiu,the epicenter of Wenchuan earthquake,as the experimental *** vegetation coverage information of the experimental area is extracted from the remote sensing images collected in the year of 2005,2011 and 2013,*** surface vegetation coverage in different periods is analyzed,and the vegetation recovery rate of the whole area is *** experimental results show that in the first three years after the earthquake,the speed of vegetation restoration is slow,and the vegetation coverage rate is less than 20%better than 0.241,while in 2013,the vegetation coverage increases significantly.

关键词： Wenchuan earthquake Yingxiu landslide area NDVI Vegetation restoration

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Earthquake-triggered landslide interpretation model of high resolution remote sensing imageries based on bag of visual word

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Earthquake Research Advances 2023年第2期3卷 39-45页

作者： Ruyue Bai Zegen Wang Heng Lu Chen Chen xiuju liu Guohao Deng Qiang He Zhiming Ren Bin Ding Xin Ye School of Civil Engineering and Geomatics Southwest Petroleum UniversityChengduChina State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengduChina College of Hydraulic and Hydroelectric Engineering Sichuan UniversityChengduChina Chengdu Planning Information Technology Center ChengduChina Sichuan Zhide Geotechnical Survey Co. Ltd.ChengduChina

Traditional visual interpretation is often inefficient due to its excessively workload professional knowledge and strong ***,building an automatic interpretation model on high spatial resolution remote sensing images is the key to the quick and efficient interpretation of earthquake-triggered *** at addressing this problem,a landslide interpretation model of high-resolution images based on bag of visual word(BoVW)feature was *** high-resolution images were pre-processed,and then BoVW feature and support vector machine(SVM)was adopted to establish an automatic landslide interpretation *** model was further compared with the currently widely used Histogram of Oriented Gradient(HoG)feature extraction *** order to test the effectiveness of the method,typical landslide images were selected to construct a landslide sample library,which was subsequently utilized as the foundation for conducting an experimental *** results show that the accuracy of landslide extraction using this method reaches as high as 89%,indicating that the method can be used for the automatic interpretation of landslides in disaster-prone areas,and has high practical value for regional disaster prevention and damage reduction.

关键词： Earthquake-triggered landslide BoVW High resolution imagery Interpretation model

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Dosage of L-arginine Preventing Acute High-dose PDD Nephrotoxicity

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The Chinese-German Journal of Clinical Oncology 2005年第6期4卷 358-360页

作者：王京芬刘秀菊郝鲁英山东省临沂市肿瘤医院内一科 276001

Objective： To explore the optimal dose of L-arginine to prevent acute high-dose （HD）-PDD nephrotoxicity. Methods： 128 cases using PDD with the dosage of 100 mg/m^2 within two days （D1, 2） in combination with L-arginine were randomly divided into 3 groups of A, B and C. The dosages of L- arginine in the 3 groups were 5 g/（m^2·d）, 10 g/（m^2·d） and 15 g/（m^2·d）, respectively. Each patient received 2 cycles chemotherapy to form self control： 1 cycle combined with L-arginine, while 1 cycle chemotherapy alone, β2-MG in urine, BUN, Cr and uric acid in blood were detected just 24 h before and after using PDD. The changes of each index in the three groups were observed in the presence or absence, and the therapeutic effects were compared among the three groups. Results： There was no significant difference in BUN, Cr and uric acid in blood before and after chemotherapy in the presence or absence, showing these indexes could not be used as markers of early acute nephrotoxicity. Urine β2-MG values in the presence and absence were 0.9120±0.6618 vs 1.5167±0.7908 （P〈0.05）, 0.5404±0.5810 vs 1.4616±0.8120 （P〈0.01）, 0.4998±0.6210 vs 1.5210±0.7710 （P〈0.01） in the groups A, B and C respectively. The excellent effective rate and total effective rate in groups A, B and C were 40.9% and 59.1%, 68.2% and 90.9%, and 77.5% and 97.5%, respectively. There was significant difference in the excellent effective rate and total effective rate between groups A and B, but not between groups B and C. Conclusion： The optimal dose of L- arginine to prevent acute HD-PDD nephrotoxicity is 10 g/（m^2·d）. Increased dosage can＇t improve the effect accordingly.

关键词： L-arginine optimal dosage PDD nephrotoxicity

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基于嵌入式系统物联网的智能监测系统设计

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计算机测量与控制 2012年第9期20卷 2375-2377,2388页

作者：刘秀菊菏泽学院计算机与信息工程系山东菏泽274000

文章在总结国内外相关研究的基础上,针对传统养殖业依靠人工观察中费时费力、准确率不高的缺点,利用RFID、GPRS和嵌入式技术对规模养猪场群养猪中的每头猪的采食次数、采食量、生长量等数据进行采集和分析,提出了一种生猪日常行为自动... 详细信息

文章在总结国内外相关研究的基础上,针对传统养殖业依靠人工观察中费时费力、准确率不高的缺点,利用RFID、GPRS和嵌入式技术对规模养猪场群养猪中的每头猪的采食次数、采食量、生长量等数据进行采集和分析,提出了一种生猪日常行为自动监测的新方法。文章设计的基于RFID、GPRS和ARM嵌入式生猪行为自动监测系统,利用本系统,可尽早发现生猪进食行为异常,有利于发现病猪或疑似病猪,减少养殖企业的经济损失;同时,通过对采集的数据进行分析可知道生猪的生长情况,尽可能地提高饲料利用率;试验结果表明,该系统能有效实现病猪的自动检测,获取生猪的生长数据,系统的实时性和监测效果均达到了预期的目标。

关键词：物联网自动监测嵌入式射频识别

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以2-苯基-4,4'-二氨基二苯醚为基础的热固性聚酰亚胺树脂及其复合材料

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高等学校化学学报 2016年第10期37卷 1926-1931页

作者：范卫锋刘秀菊阎敬灵孟祥胜刘敬峰王震中国科学院长春应用化学研究所长春130022 中国科学院大学北京100049 山东非金属材料研究所济南250031 常州储能材料与器件研究院常州213000

以2-苯基-4,4'-二氨基二苯醚(p-ODA)、异构二苯醚二酐(ODPA)和苯乙炔基苯酐(PEPA)为原料,通过两步法合成了聚合度分别为1,2和3的酰亚胺树脂低聚物,并通过模压成型法制备了单向碳纤维增强的聚酰亚胺复合材料.表征了酰亚胺树脂低聚物的溶... 详细信息

以2-苯基-4,4'-二氨基二苯醚(p-ODA)、异构二苯醚二酐(ODPA)和苯乙炔基苯酐(PEPA)为原料,通过两步法合成了聚合度分别为1,2和3的酰亚胺树脂低聚物,并通过模压成型法制备了单向碳纤维增强的聚酰亚胺复合材料.表征了酰亚胺树脂低聚物的溶解性、熔体黏度及其固化物聚酰亚胺树脂的热性能,结果表明,聚酰亚胺树脂具有良好的溶解性,在N,N-二甲基乙酰胺(DMAc)、四氢呋喃(THF)及1,4-二氧六环等溶剂中的溶解度大于30%;所有酰亚胺树脂低聚物的最低熔体黏度均在10 Pa·s以下,具有良好的成型工艺性;聚酰亚胺树脂具有良好的热性能,玻璃化转变温度(Tg)最高可达300℃,5%热失重温度(T5%)最高可达545℃,碳纤维增强聚酰亚胺复合材料PIC-4,4'-ODPA-2具有最佳的高低温力学性能.

关键词：聚酰亚胺 2-苯基-4,4'-二氨基二苯醚溶解性力学性能碳纤维增强复合材料

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普光地区碳酸盐岩储层孔隙类型测井识别及孔渗关系

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地球科学（中国地质大学学报） 2016年第12期41卷 2119-2126页

作者：张翔张伟靳秀菊刘红磊姜贻伟毕建霞长江大学油气资源与勘探技术教育部重点实验室湖北武汉430010 中国石油集团测井有限公司河北任丘062550 中国石化中原油田分公司勘探开发科学研究院河南濮阳457001

普光地区长兴组和飞仙关组碳酸盐岩储层孔隙度与渗透率之间没有严格通用的数学关系,导致储层渗透率计算具有很大困难.通过对该地区测井资料、常规薄片、铸体薄片和岩心物性等资料进行分析,表明碳酸盐岩孔隙类型是影响孔渗关系的主要因素... 详细信息

普光地区长兴组和飞仙关组碳酸盐岩储层孔隙度与渗透率之间没有严格通用的数学关系,导致储层渗透率计算具有很大困难.通过对该地区测井资料、常规薄片、铸体薄片和岩心物性等资料进行分析,表明碳酸盐岩孔隙类型是影响孔渗关系的主要因素.基于常规测井资料构造出对孔隙结构比较敏感的测井特征:声波时差与密度比值和深浅侧向电阻率比值,可用于对该地区碳酸盐岩孔隙类型进行识别,再针对不同的孔隙类型建立相应的孔渗关系模型,用于计算该地区储层渗透率.实例资料处理结果表明,模型计算渗透率与岩心分析渗透率符合较好,且井间规律具有一致性,基于孔隙结构建立的储层孔隙度与渗透率模型能较好地确定储层渗透率.

关键词：碳酸盐岩测井特征孔渗关系孔隙类型渗透率地球物理

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