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P-wave tomography of crust and upper mantle under Southern California: Influence of topography of Moho discontinuity

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Acta Seismologica Sinica(English Edition) 2003年第6期16卷 577-587页

作者： HUANG Jin-li(黄金莉) zhao da-peng(赵大鹏) Center for Analysis and Prediction China Seismological Bureau Beijing 100036 China Geodynamics Research Center Ehime University Matsuyama 790 Japan

We use 146 422 P-wave arrival times from 6 347 local earthquakes recorded by the Southern California SeismicNetwork to determine a detailed three-dimensional P-wave velocity structure at 0～35 km depth. We have takeninto account the Moho depth variations, which were obtained by seismological methods. Checkerboard tests sug-gest that our inversion results are reliable. Our models provide new information on regional geological structuresof Southern California. At shallow depths P-wave velocity structure correlates with surface geological features andexpresses well variations of surface topography of the mountains and basins. The velocity structure at each layer ischaracterized by block structures bounded by large faults. Ventura Basin, Los Angeles Basin, Mojave Desert, Pen-insular Ranges, San Joaquin Valley, Sierra Nevada, and Salton Trough show respectively all-round block. SanAndreas Fault becomes an obvious boundary of the region. To its southwest, the velocity is higher, and there arestrong heterogeneity and deeper seismicity; but to its northeast, the velocity is lower and shows less variation thanto the southwest, the seismicity is shallower. To investigate the effect of the Moho geometry we conducted inver-sions for two cases: one for flat Moho geometry, another for a Moho with lateral depth variations. We found thatthe topography of the Moho greatly affects the velocity structure of the middle and lower crust. When the Mohotopography is considered, a more reasonable tomographic result can be obtained and the resulting 3-D velocitymodel fits the data better.

关键词： Southern California Moho discontinuity 3-D P-wave velocity structure block feature seismicity

Kasai手术的精准操作对胆道闭锁患儿近期疗效的影响及预后相关影响因素分析

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中国实用医刊 2018年第8期45卷 36-38页

作者：李晓娣杨合英李延安张大赵鸽李亚萍郑州大学第一附属医院小儿外科 450000

目的探讨胆道闭锁Kasai手术的精准操作技巧对增加患儿黄疸消退率的作用并分析影响患儿预后的相关因素。方法回顾性分析85例行Kasai手术的胆道闭锁患儿的临床资料，统计并分析患儿的术后情况、随访情况、手术日龄、有无胆管炎等与黄疸清... 详细信息

目的探讨胆道闭锁Kasai手术的精准操作技巧对增加患儿黄疸消退率的作用并分析影响患儿预后的相关因素。方法回顾性分析85例行Kasai手术的胆道闭锁患儿的临床资料，统计并分析患儿的术后情况、随访情况、手术日龄、有无胆管炎等与黄疸清除率的关系。结果85例患儿中，82例术后早期排出胆汁样粪便，术后早期胆汁排出率为96．4％；门诊定期随访6个月，近期黄疸消退率为47．1％，肝功能恢复良好率为41．2％。日龄60-90d患儿近期黄疸清除率高；无胆管炎患儿较胆管炎患儿黄疸消退率高。结论Kasai手术的精准操作能够提高胆道闭锁患儿的术后黄疸消退率，手术日龄、有无胆管炎会影响能患儿预后。

关键词：胆道闭锁 Kasai手术精准操作近期疗效预后

Current Status and Problem-Solving Strategies for Ginseng Industry

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Chinese Journal of Integrative Medicine 2019年第12期25卷 883-886页

作者： li Xiang-yan SUN li-wei zhao da-qing Key Laboratory of Active Substances and Biological Mechanisms of Ginseng Efficacy Ministry of EducationJilin Provincial Key Laboratory of Bio-macromolecules of Chinese MedicineJilin Ginseng AcademyChangchun University of Chinese MedicineChangchun(130117)China Research Center of Traditional Chinese Medicine the Affiliated Hospital to Changchun University of Chinese MedicineChangchun(130021)China

Ginseng is a plant in the family Araliaceae and the genus Panax with the formal name of Panax ginseng C. A. Meyer and the treasure of traditional herbal medicine resources as the "king of herbs". Ginseng has been traditionally used for over 2,000 years in Asian countries, especially in China and Republic of Korea. During the ginseng industry chain, the cultivation in farmland and seed breeding are important for sustainable development of ginseng resources. Active components in ginseng including ginsenosides, polysaccharides, phenolic compound and their therapeutic benefits for multiple diseases are being studied. This paper aimed to review current research status and problem-solving strategies for each step of ginseng industry, including ginseng growing cultivation and seed resources, basic and clinical studies as well as comparison of ginseng industry between China and Republic of Korea, hoping to provide a reference for research direction and future development of ginseng industry.

关键词： ginseng cultivation in farmland functional mechanism review

Research of novel complex optical network routing architecture

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The Journal of China Universities of Posts and Telecommunications 2010年第5期17卷 93-99页

作者： HAN da-hai ZHANG Jie zhao Yong-li zhao Shi-yu Key Laboratory of Information Photonics and Optical Communications Ministry of Education Beijing University of Posts & Telecommtmications Beijing 100876 China

This article puts forward a novel routing architecture for complex optical network,which core component is path calculation element （PCE）.As is well known,the PCE-based distributed path computation structure is making the routing control and computation loosely coupled from traditional control *** the study,the resource allocation and routing algorithm are the critical part of PCE *** compare the performance of new architecture and the traditional one,the user uses the flooding suppression,routing delay,resource utilization and traffic blocking probability as performance simulation parameters and taking the verification simulation on objective modular network testbed （OMNeT） platform against to source-node routing *** numerical analysis,computer simulation and experiment work indicate that the operation of PCE-based routing architecture can reduce the flooding information of path calculation request as well as the routing hops significantly and improve the quality of service （QoS） by decreasing the blocking probability when failure happened.

关键词： complex optical network PCE routing architecture

传感器影响可燃气体报警器长期稳定性及产生误报的原因分析

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传感器世界 2012年第6期18卷 20-22,4,5页

作者：赵大力刘天庆徐洁庞炳海天津费加罗电子有限公司

概述了影响报警产品性能的两大原因-电路和气体传感器,其中气体传感器部分是影响质量的关键。以半导体传感器为例,分析了可燃气体报警器在正常使用环境下经常发生误报警及使用一段时间后不报警的原因,并采取了相应的措施—通过对传感器... 详细信息

概述了影响报警产品性能的两大原因-电路和气体传感器,其中气体传感器部分是影响质量的关键。以半导体传感器为例,分析了可燃气体报警器在正常使用环境下经常发生误报警及使用一段时间后不报警的原因,并采取了相应的措施—通过对传感器增加干扰气体过滤帽把主要影响报警器误报的乙醇等气体滤除掉,并尽可能远离含硅物质以保证传感器的长期稳定性。根据对不同质量传感器在各种气体环境下的试验数据及特性曲线分析,论述了传感器对报警产品的可靠性及长期稳定性的影响,并针对报警器的误报问题提出相应的解决方法。

关键词：半导体式气体传感器乙醇长期稳定性可靠性硅

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用一氧化碳报警器实现火灾预报及救援指导

传感器世界 2012年第7期18卷 21-24页

作者：赵大力刘天庆徐洁庞炳海天津费加罗电子有限公司 300457

通过对3种不同类型一氧化碳传感器的原理及特性比较,得出电化学型气体传感器最适合用于实现火灾预报及救援指导的报警器产品的设计。并根据一氧化碳中毒机理,论述了使用单片机来设计实现火灾现场救援指导的一氧化碳报警器的方法。

关键词：一氧化碳报警器火灾预报一氧化碳中毒电化学式气体传感器

Estimating Photometric Redshifts with Artificial Neural Networks and Multi-Parameters

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Chinese Journal of Astronomy and Astrophysics 2007年第3期7卷 448-456页

作者： li-li li Yan-Xia Zhang Yong-Heng zhao da-Wei Yang National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 College of Physics Science and Information Engineering Hebei Normal University Shijiazhuang 050016

We calculate photometric redshifts from the Sloan Digital Sky Survey data Release 2 （SDSS DR2） Galaxy Sample using artificial neural networks （ANNs）. Different input sets based on various parameters （e.g. magnitude, color index, flux information） are explored. Mainly, parameters from broadband photometry are utilized and their performances in redshift prediction are compared. While any parameter may be easily incorporated in the input, our results indicate that using the dereddened magnitudes often produces more accurate photometric redshifts than using the Petrosian magnitudes or model magnitudes as input, but the model magnitudes are superior to the Petrosian magnitudes. Also, better performance resuits when more effective parameters are used in the training set. The method is tested on a sample of 79 346 galaxies from the SDSS DR2. When using 19 parameters based on the dereddened magnitudes, the rms error in redshift estimation is σz = 0.020184. The ANN is highly competitive tool compared to the traditional template-fitting methods when a large and representative training set is available.

关键词： galaxies fundamental parameters - techniques photometric - method dataanalysis

A Modified Model for Soil–Structure Interface Considering Random damage of Mesoscopic Contact Elements

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China Ocean Engineering 2023年第5期37卷 807-818页

作者： KE li-jun GAO Yu-feng zhao Zi-hao li da-yong JI Jian Institute of Geotechnical Engineering Yangzhou UniversityYangzhou 225127China Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering Hohai UniversityNanjing 210098China School of Civil Engineering Shenyang Jianzhu(Architecture and Engineering)UniversityShenyang 110819China College of Pipeline and Civil Engineering China University of Petroleum(East China)Qingdao 266580China

The interaction between soil and marine structures like submarine pipeline/pipe pile/suction caisson is a complicated geotechnical mechanism *** this study,the interface is discretized into multiple mesoscopic contact elements that are damaged randomly throughout the shearing process due to the natural *** evolution equation of damage variable is developed based on the Weibull function,which is able to cover a rather wide range of distribution shapes by only two parameters,making it applicable for varying ***,a statistical damage model is established by incorporating Mohr–Coulomb strength criterion,in which the interfacial residual strength is considered whereby the strain softening behavior can be described.A concept of“semi-softening”characteristic point on shear stress–displacement curve is proposed for effectively modeling the evolution of strain ***,a series of ring shear tests of the interfaces between fine sea sand and smooth/rough steel surfaces are *** predicted results using the proposed model are compared with experimental data of this study as well as some results from existing literature,indicating that the model has a good performance in modeling the progressive failure and strain softening behavior for various types of soil–structure interfaces.

关键词： soil–structure interface statistical damage model mesoscopic element Weibull function “semi-softening”characteristic point

Einstein Probe discovery of EP240408a: A peculiar X-ray transient with an intermediate timescale

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 222-240页

作者： Wenda Zhang Weimin Yuan Zhixing ling Yong Chen Nanda Rea Arne Rau Zhiming Cai Huaqing Cheng Francesco Coti Zelati lixin dai Jingwei Hu Shumei Jia Chichuan Jin Dongyue li Paul O’Brien Rongfeng Shen Xinwen Shu Shengli Sun Xiaojin Sun Xiaofeng Wang Lei Yang Bing Zhang Chen Zhang Shuang-Nan Zhang Yonghe Zhang Jie An david Buckley Alexis Coleiro Bertrand Cordier liming Dou Rob Eyles-Ferris Zhou Fan Hua Feng Shaoyu Fu Johan P.U.Fynbo Lluis Galbany Saurabh W.Jha Shuaiqing Jiang Albert Kong Erik Kuulkers Weihua Lei Wenxiong li Bifang liu Mingjun liu Xing liu Yuan liu Zhu liu Chandreyee Maitra Alessio Marino Itumeleng Monageng Kirpal Nandra Jeremy Sanders Roberto Soria lian Tao Junfeng Wang Song Wang Tinggui Wang Zhongxiang Wang Qingwen Wu Xuefeng Wu Dong Xu Yanjun Xu Suijian Xue Yongquan Xue Zijian Zhang Zipei Zhu Hu Zou Congying Bao Fansheng Chen Houlei Chen Tianxiang Chen Wei Chen Yehai Chen Yifan Chen Chenzhou Cui Weiwei Cui Yanfeng dai Dongwei Fan Ju Guan dawei Han Dongjie Hou Haibo Hu Maohai Huang Jia Huo Zhenqing Jia Bowen Jiang Ge Jin Chengkui li Junfei li Longhui li Maoshun li Wei li Zhengda li Tianying lian Congzhan liu Heyang liu Huaqiu liu Fangjun Lu Laidan Luo Jia Ma Xuan Mao Haiwu Pan Xin Pan liming Song Hui Sun Yunyin Tan Qingjun Tang Yihan Tao Hao Wang Juan Wang Lei Wang Wenxin Wang Yilong Wang Yusa Wang Qinyu Wu Haitao Xu Jingjing Xu Xinpeng Xu Yunfei Xu zhao Xu Changbin Xue Yulong Xue Ailiang Yan Haonan Yang Xiongtao Yang Yanji Yang Juan Zhang Mo Zhang Wenjie Zhang Zhen Zhang Zhen Zhang Ziliang Zhang Donghua zhao Haisheng zhao Xiaofan zhao Zijian zhao Hongyan Zhou Yilin Zhou Yuxuan Zhu Zhencai Zhu National Astronomical Observatories Chinese Academy of Sciences School of Astronomy and Space Sciences University of Chinese Academy of Sciences Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Institute of Space Sciences (ICE) CSIC Institut d’Estudis Espacials de Catalunya (IEEC) Max Planck Institute for Extraterrestrial Physics Innovation Academy for Microsatellites Chinese Academy of Sciences Department of Physics University of Hong Kong School of Physics and Astronomy University of Leicester School of Physics and Astronomy Sun Yat-sen University Department of Physics Anhui Normal University Shanghai Institute of Technical Physics Chinese Academy of Sciences Physics Department Tsinghua University Nevada Center for Astrophysics University of Nevada Las Vegas Department of Physics and Astronomy University of Nevada Las Vegas South African Astronomical Observatory Department of Astronomy University of Cape Town Department of Physics University of the Free State Université Paris Cité CNRS Astroparticule et Cosmologie Université Paris Cité CEA Paris-Saclay IRFU/dap-AIM Department of Astronomy Guangzhou University Cosmic dawn Center (daWN) Niels Bohr Institute University of Copenhagen Department of Physics and Astronomy Rutgers the State University of New Jersey Institute for Cosmic Ray Research The University of Tokyo ESA/ESTEC Department of Astronomy School of Physics Huazhong University of Science and Technology INAF-Osservatorio Astrofisico di Torino Sydney Institute for Astronomy School of Physics The University of Sydney Department of Astronomy Xiamen University Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University Department of Astronomy University of Science and Technology School of Astronomy and Space Sciences University of Science and Technology of China Institute of Deep Space Sciences Deep Space Exploration Laboratory Department of Astronomy School of Physics and Astronomy Yunnan University Shanghai Astronomical Observatory Chi

We report the discovery of a peculiar X-ray transient,EP240408a,by Einstein Probe （EP） and follow-up studies made with EP,Swift,NICER,GROND,ATCA and other ground-based multiwavelength *** new transient was first detected with Wide-field X-ray Telescope （WXT） on board EP on April 8th,2024,manifested in an intense yet brief X-ray flare lasting for *** flare reached a peak flux of 3.9×10-9erg cm-2s-1in 0.5-4 ke V,～300 times brighter than the underlying X-ray emission detected throughout the *** and more precise follow-up observations by EP/FXT,Swift and NICER confirmed the finding of this new *** X-ray spectrum is non-thermal in 0.5-10 ke V,with a power-law photon index varying *** X-ray light curve shows a plateau lasting for ～4 d,followed by a steep decay till becoming undetectable ～10 d after the initial *** on its temporal property and constraints from previous EP observations,an unusual timescale in the range of 7-23 d is found for EP240408a,which is intermediate between the commonly found fast and long-term *** counterparts have been found in optical and near-infrared,with the earliest observation at 17 h after the initial X-ray detection,suggestive of intrinsically weak emission in these *** demonstrate that the remarkable properties of EP240408a are inconsistent with any of the transient types known so far,by comparison with,in particular,jetted tidal disruption events,gamma-ray bursts,X-ray binaries and fast blue optical *** nature of EP240408a thus remains an *** suggest that EP240408a may represent a new type of transients with intermediate timescales of the order of～10 *** detection and follow-ups of more of such objects are essential for revealing their origin.

关键词： X-ray transients ${\bm~{Einstein~~Probe}}$