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Activity evolution of landslides and debris flows after the Wenchuan earthquake in the Qipan catchment,Southwest China

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Journal of Mountain Science 2021年第4期18卷 932-951页

作者： SHI Qing-yun TANG Chuan GONG Ling-feng CHEN Ming LI Ning ZHOU Wei XIONG Jiang TANG Hai WANG xiao-di LI Ming-wei State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China Chengdu Geological Survey Center China Geological SurveyChengdu 610081China School of Emergency Science Xihua UniversityChengdu 610039China 11th Geology Team of Zhejiang Province Wenzhou 32500China Sichuan Academy of Environmental Sciences Chengdu 610044China

The Wenchuan earthquake that occurred on 12 May 2008 induced numerous *** landslide materials were deposited on hillslopes,and deep channels were easily remobilized and transformed into debris flows by extreme *** years after the Wenchuan earthquake,debris flows were still active in the Qipangou Ravine in the quake-hit *** this paper,we continuously tracked the spatiotemporal evolution of the landslides and vegetation restoration and evaluated the evolution of debris flow activity in the Qipan catchment with the aid of a GIS platform and field investigations from 2008 to *** observed that the area with active landslides increased sharply immediately following the earthquake,and then decreased with time;however,the total area of landslides continued to increase from 6.93 km^(2)in 2008 to 10.55 km^(2)in *** active landslides shifted towards lower angles and higher elevations after *** 2009,the vegetation coverage has been gradually increasing and approaching the coverage present before the earthquake as of *** landslide activity was high and the vegetation recovery rates were rapidly rising during the first five years after the earthquake;the recovery rates then slowed over ***,we divided the evolution that occurred during the post landslide period into an active period(2008-2013),a self-adjustment period(2013-2026)and a stable period(after 2026).We then proposed a quantitative model to determine the trends of landslide activity rates and NDVI values in the catchment,which indicated that the landslide activities and postseismic vegetation restoration rates in this catchment will return to preseismic levels within approximately two *** also analysed the runout volumes of the debris flows after the earthquakes(diexi and Wenchuan)and the standard deviation of the vegetation coverage and predicted that the debris flow activities will last for an additional 50 years or more.

关键词： Evolution of debris flow activity Seismic landslides Vegetation recovery Qipan catchment

The chromosome-level reference genome of Coptis chinensis provides insights into genomic evolution and berberine biosynthesis

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Horticulture Research 2021年第1期8卷 1632-1642页

作者： Da-xia Chen Yuan Pan Yu Wang Yan-Ze Cui Ying-Jun Zhang Rang-yu Mo xiao-li Wu Jun Tan Jian Zhang Lian-an Guo xiao Zhao Wenkai Jiang Tian-lin Sun xiao-di Hu Long-yun Li Chongqing Academy of Chinese Materia Medica 400065 ChongqingChina Chongqing Engineering Research Center for Fine Variety Breeding Techniques of Chinese Materia Medica 400065 ChongqingChina Chongqing Sub-center of National Resource Center for Chinese Materia Medica China Academy of Chinese Medical Science400065 ChongqingChina Novogene Bioinformatics Institute Building 301Zone A10 Jiuxianqiao North 13 RoadChaoyang District100083 BeijingChina

Coptis chinensis Franch, a perennial herb, is mainly distributed in southeastern China. The rhizome of C. chinensis hasbeen used as a traditional medicine for more than 2000 years in China and many other Asian countries. Thepharmacological activities of C. chinensis have been validated by research. Here, we present a de novo high-qualitygenome of C. chinensis with a chromosome-level genome of ~958.20 Mb, a contig N50 of 1.58 Mb, and a scaffold N50of 4.53 Mb. We found that the relatively large genome size of C. chinensis was caused by the amplification of longterminal repeat (LTR) retrotransposons. In addition, a whole-genome duplication event in ancestral Ranunculales wasdiscovered. Comparative genomic analysis revealed that the tyrosine decarboxylase (TYDC) and (S)-norcoclaurinesynthase (NCS) genes were expanded and that the aspartate aminotransferase gene (ASP5) was positively selected inthe berberine metabolic pathway. Expression level and HPLC analyses showed that the berberine content was highestin the roots of C. chinensis in the third and fourth years. The chromosome-level reference genome of C. chinensisprovides important genomic data for molecular-assisted breeding and active ingredient biosynthesis.

关键词： berberine Coptis insight

Chinese Industrial Clusters＇ Capacity for Innovation： An Empirical Study of Zhejiang Province

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Fudan Journal of the Humanities and Social Sciences 2009年第1期2卷 72-98页

作者： Wang Zhi-kai Zhang xiao-di

Today, clusters based on concentrations of small-and medium-size enterprises （SMEs） are widely acknowledged as the driving force for industrialization and urbanization in rural China. Clusters efficiently pool and distribute elements of production, and provide better division among small specialized firms in given local regions. Economic agglomerations are the typical spatial structures of clusters. Clusters drive forward industrialization, and this path of industrialization in China is similar to the industrialization wave based on industrial districts（ IDs or clusters） with concentrations of SMEs that started in west European countries, particularly in Italy and Germany, since the 1960s. However, in contrast to developed EU countries, Chinese clusters are mainly concentrations of labor-intensive and low-tech industries, without independent intellectual property fights or leading brands. China＇s industrial clusters＇ capaciW for innovation is rather weak. Chinese clusters participate in the international trade and world division of production from the node of processing, stopping at the lower end of Global Value Chain of industrial production. By reviewing Zhejiang clusters, this study examines the innovation capacity of Chinese clusters in the process of development and industrialization, so as to provide advice on the future development of Chinese clusters.

关键词： clusters industrialization capacity for innovation Global Value Chains prospects

碳纳米管修饰玻碳电极方波伏安阳极溶出法测定痕量铅

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冶金分析 2007年第3期27卷 25-28页

作者：姜冉狄晓威内蒙古大学化学化工学院内蒙古大学化学化工学院内蒙古呼和浩特010021

研究了以碳纳米管(CNT)修饰的玻碳电极为工作电极,经吸附富集、交换介质后,方波溶出伏安法测定微量铅。讨论了吸附溶出机理,对富集时间、铅的浓度、支持电解质、样品溶液pH值及部分干扰离子等进行试验,并对含铅水样进行测定。试验发现,... 详细信息

研究了以碳纳米管(CNT)修饰的玻碳电极为工作电极,经吸附富集、交换介质后,方波溶出伏安法测定微量铅。讨论了吸附溶出机理,对富集时间、铅的浓度、支持电解质、样品溶液pH值及部分干扰离子等进行试验,并对含铅水样进行测定。试验发现,用羧基化的碳纳米管修饰的玻碳电极作为工作电极,对铅离子吸附的灵敏度较高。从富集电位正向扫描至0V,铅在-0·544V处产生一个灵敏的阳极溶出峰,峰电流(Ip)与Pb2+浓度在1·0×10-7～1·0×10-5mol/L范围内呈良好的线性关系。富集1h后,检出限为可达1·0×10-8mol/L,应用该电极测定水样中微量铅,回收率为92%～102%。

关键词：羧基化的碳纳米管化学修饰玻碳电极吸附方波溶出伏安法铅

A self-assembled framework that interpenetrates in crystal but does not interpenetrate in solution

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Science China Chemistry 2021年第7期64卷 1228-1234页

作者： Bo Yang Jian-Wei Zhang Shang-Bo Yu Ze-Kun Wang Pan-Qing Zhang xiao-di Yang Qiao-Yan Qi Guan-Yu Yang Da Ma Zhan-Ting Li College of Chemistry Zhengzhou UniversityZhengzhou 450001China Innovation Research Institute of Traditional Chinese Medicine Shanghai University of Traditional Chinese MedicineShanghai 201203China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China Department of Chemistry Fudan UniversityShanghai 200438China

A porous supramolecular framework has been for the first time revealed to undergo interpenetration in crystal and noninterpenetration in solution.A new supramolecular organic framework Bu-SOF has been constructed from the co-assembly of a tetracationic tetrahedral monomer and cucurbit[8]uril(CB[8])in water through the encapsulation of two anti-parallel n-butyl chains by CB[8].X-ray diffraction analysis reveals that Bu-SOF forms 3-fold interpenetrated networks in crystals grown by evaporation of its solution in water.1 H NMR,dynamic light scattering and isothermal titration calorimetric experiments confirm that Bu-SOF is also formed in *** samples,prepared by lyophilizing the aqueous solution of Bu-SOF,can adsorb nanoscaled organic dyes,supporting the porosity of the framework and thus non-interpenetration in *** avoidance of interpenetration of Bu-SOF in solution has been attributed to the filling of water inside the porous framework as well as the electrostatic repulsion of the appended bipyridinium units of the tetrahedral building block.

关键词： supramolecular organic framework cucurbituril crystal interpenetration non-interpenetration

Observation of topological charge transformations in acoustic vortex using passive periodic systems

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 140-147页

作者： di-Chao Chen Xie Liu Changqing Xu Da-Jian Wu Ying Cheng xiao-Jun Liu School of Physics and Technology Nanjing Normal University Key Laboratory of Modern Acoustics School of Physics Nanjing University

Vortex transmutation utilizes a periodic system, which not only enables the alteration of the topological charge(TC) of unstable input vortices but also facilitates their transformation into stable structures. This approach is crucial for investigating the characteristics of vortices in various wave systems. Here, we achieve acoustic vortex TC transmutation by employing a welldesigned dual-structured plate external system(DPES). The interactions between the acoustic vortex and the finite-order discrete rotational symmetry lead to the transformation of its topological charge when complete rotational symmetry is broken to Nthorder discrete symmetry. Our results experimentally demonstrate the acoustic vortex TC transmutation based on passive artificial structures, enabling numerous applications in particle manipulation and information multiplexing as well as advancing our understanding and control over free-space acoustic vortices.

关键词： acoustic vortex topological charge transformation artificial structure

Edge determination algorithm of game road for intelligent automobile based on plane array CCD

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重庆邮电大学学报（自然科学版） 2009年第2期21卷 138-141页

作者： CHEN Zhi-kun WANG Fu-bin PAN xiao-di LIU Jie HUANG Chang-fa Computer and Automatic Control College Hebei Polytechnic University Tangshan 063009 P. R. China Mechanical Engineering and Automatic College Northeastern University Shenyang 110004 P. R. China

The contribution factor of automobile movement stability on the structure feature of seek road intelligent automobile chassis was *** kinematic model of linear two-degree freedom for intelligent automobile was *** noise influence to the image of game road on the image rebuilding of different acquisition data of game road was *** threshold for image division was determined by the statistical analysis to grey histogram of game road *** method indicates its adaption to CCD image of low distinguish ability.

关键词：智能汽车汽车运动边缘检测算法面阵CCD 图像重建运动学模型 CCD图像汽车底盘

中国当代小说海外译介与传播的特点、问题及策略

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北京社会科学 2022年第7期 35-44页

作者：肖笛山东大学外国语学院

基于两部海外译者所译中国当代小说,从经典化视角系统分析了小说的具体翻译特点,并结合西方媒体相关评价反馈,分析了小说在语言、句式结构、修辞手段及叙事方式等层面的积极经验。根据译介中存在的问题,提出以下传播策略在翻译过程中充... 详细信息

基于两部海外译者所译中国当代小说,从经典化视角系统分析了小说的具体翻译特点,并结合西方媒体相关评价反馈,分析了小说在语言、句式结构、修辞手段及叙事方式等层面的积极经验。根据译介中存在的问题,提出以下传播策略在翻译过程中充分识别并处理好具有鲜明地域特色的本土经验,使海外读者的阅读体验最大程度地接近中文读者;鼓励国内学界对译文开展批评性分析,为海外译家提供更多导向参考;强化译者与出版机构的经典化意识,确保译文不脱离原生活;充分发挥汉学家深谙译入语的语言文化优势并向其提供多维度支持,更好地促进中国文学的海外传播及国际经典化。

关键词：中国当代小说海外译家译介与传播经典化

中国当代小说在英国的译介与媒体接受——中国文化“走出去”视域下的考察

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烟台大学学报（哲学社会科学版） 2018年第1期31卷 73-81页

作者：肖笛山东大学外国语学院山东济南250100

中国文化"走出去"除本土自主译介和出版发行以外,也有域外国家的自主译介与出版。以英国2000-2009年期间自主译介出版的大陆作家中文小说译作进行量化和分析,结合此间7家英国主流媒体发表的相关书评,探讨与诠释此10年间中国小说在英国... 详细信息

中国文化"走出去"除本土自主译介和出版发行以外,也有域外国家的自主译介与出版。以英国2000-2009年期间自主译介出版的大陆作家中文小说译作进行量化和分析,结合此间7家英国主流媒体发表的相关书评,探讨与诠释此10年间中国小说在英国译介与传播的接受状况。期望研究结果对阐释英国接受中国文化的态度,对中国文学作品的海外传播及其研究提供一些有意义的参照。

关键词：中国小说英国译介媒体接受