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The Effect of Splenectomy on the Risk of Infection in Patients With Liver Cirrhosis

Infectious Diseases & Immunity 2022年第1期2卷 15-20页

作者： tiantong feng Xiaoxue Hou Wen Zhang Anran Tian Nian Chen Jun Li Chuanlong Zhu Department of Infectious Disease The First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China Department of Tropical Diseases The Second Affiliated Hospital of Hainan Medical UniversityHaikouHainan 570311China Key Laboratory of Tropical Translational Medicine of Ministry of Education Hainan Medical UniversityHaikouHainan 571199China Laboratory of Infectious Disease The First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China

Background:Splenectomy has been reported to improve liver function as well as hypersplenism,but it is still controversial whether splenectomy will further damage the immune function of patients with liver *** study aims to evaluate the impact of splenectomy on the risk of infection in patients with liver ***:A total of 4355 patients with liver cirrhosis admitted to the First Affiliated Hospital of Nanjing Medical University from October 1,2016 to September 30,2020 were *** patients were first divided into the splenectomy group(SG)and the nonsplenectomy group(NSG).After standardization,patients were further divided according to the stage of *** rates in different stages were calculated,*** results and infection sites of patients with cirrhosis were analyzed in combination with clinical *** variables conforming to normal distribution were presented as mean±standard deviation,compared by sample t test or paired sample t ***-normal variables were presented as the median(interquartile range)and compared by Mann-Whitney U test or Wilcoxon signed rank ***:Five hundred and two patients received splenectomy and 3853 patients did *** infection was diagnosed in 497 of the 4355(11.41%)hospitalizations of patients with *** infection rate of the compensated cirrhosis SG was higher than that of the NSG(8.06%vs.5.18%,P0.05].The peak value of leukocytes in SG suffering from decompensated liver cirrhosis was significantly higher than that in NSG[12.29(11.52)109/L vs.6.37(8.90)109/L,P=0.004].Patients with decompensated liver cirrhosis had a significantly higher rate of abdominal infect

关键词： Infections Liver cirrhosis Splenectomy

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基于骨架关键关节构建时空金字塔模型的人体行为识别

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计算机应用与软件 2024年第1期41卷 153-160页

作者：司宇航周天彤冯珂垚常州大学信息科学与工程学院江苏常州213164 中国科学院智能红外感知重点实验室上海200083 中国科学院上海技术物理研究所上海200083

针对当前骨骼数据信噪比低及特征信息不足的问题,提出人体关键关节构建时空金字塔模型的动作识别方法。该算法利用人体骨架关键关节构建空间域金字塔特征,保留骨架铰链系统的空间结构;利用多层级叠加协方差,构建时序金字塔特征,解决需... 详细信息

针对当前骨骼数据信噪比低及特征信息不足的问题,提出人体关键关节构建时空金字塔模型的动作识别方法。该算法利用人体骨架关键关节构建空间域金字塔特征,保留骨架铰链系统的空间结构;利用多层级叠加协方差,构建时序金字塔特征,解决需要预处理视频序列长度的问题。在MSR-Action3D和UTKinect数据集上的实验结果表明,该方法准确率高、实时性好,可广泛应用于行为识别的各个领域。

关键词：人体行为识别 3D骨骼数据时空金字塔模型关键关节

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Patterns and drivers of avian taxonomic and phylogenetic beta diversity in China vary across geographical backgrounds and dispersal abilities

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Zoological Research 2024年第1期45卷 125-135页

作者： Jian-Chao Liang Zhi-feng Ding Chun-Lin Li Yi-Ming Hu Zhi-Xin Zhou Gan-Wen Lie Xiao-Nan Niu Wen-Bin Huang Hui-Jian Hu Xing-feng Si Guangdong Key Laboratory of Animal Conservation and Resource Utilization Guangdong Public Laboratory of Wild Animal Conservation and UtilizationInstitute of ZoologyGuangdong Academy of SciencesGuangzhouGuangdong 510260China School of Resources and Environmental Engineering Anhui UniversityHefeiAnhui 230601China Guangdong Eco-Engineering Polytechnic GuangzhouGuangdong 510520China Huizhou Institute of Forestry(Huizhou Botanical Garden Management Service Center) HuizhouGuangdong 516001China Administration of National Nature Reserve for Marine Ecology of Guangdong Nanpeng Islands ShantouGuangdong 515900China Zhejiang Zhoushan Archipelago Observation and Research Station Institute of Eco-ChongmingZhejiang Tiantong Forest Ecosystem National Observation and Research StationSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China

Geographical background and dispersal ability may strongly influence assemblage dissimilarity;however,these aspects have generally been overlooked in previous large-scale beta diversity ***,we examined whether the patterns and drivers of taxonomic beta diversity(TBD)and phylogenetic beta diversity(PBD)of breeding birds in China vary across(1)regions on both sides of the Hu Line,which demarcates China’s topographical,climatic,economic,and social patterns,and(2)species with different dispersal *** and PBD were calculated and partitioned into turnover and nestedness components using a moving window *** representing climate,habitat heterogeneity,and habitat quality were employed to evaluate the effects of environmental *** distance was considered to assess the impact of dispersal *** partitioning analysis was applied to assess the relative roles of these *** general,the values of TBD and PBD were high in mountainous areas and were largely determined by environmental ***,different dominant environmental filters on either side of the Hu Line led to divergent beta diversity ***,climate-driven species turnover and habitat heterogeneity-related species nestedness dominated the regions east and west of the line,***,bird species with stronger dispersal ability were more susceptible to environmental filtering,resulting in more homogeneous *** results indicated that regions with distinctive geographical backgrounds may present different ecological factors that lead to divergent assemblage dissimilarity patterns,and dispersal ability determines the response of assemblages to these ecological *** a single universal explanation for the observed pattern without considering these aspects may lead to simplistic or incomplete ***,a comprehensive understanding of large-scale beta diversity patterns and effective pla

关键词： Beta diversity Environmental filtering Dispersal limitation Hu Line Species dispersal ability Breeding birds

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轨道车辆低频磁场仿真的电磁环境建模分析

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数字通信世界 2024年第8期 10-11页

作者：冯丽娜刘晓晶穆晓彤夏天童中车南京浦镇车辆有限公司江苏南京210031 北京航空航天大学北京100191 深圳市北航检测有限公司广东深圳518052

在开展轨道交通车辆的低频磁场仿真时,常规方法是对设备箱体添加激励,测试上方对应位点幅值情况,经常会遇到随着测试位点高度的增加,仿真实测误差逐渐增大的情况。文章基于Feko仿真平台,通过建立多方向平面波模型模拟轨道车辆车体内的... 详细信息

在开展轨道交通车辆的低频磁场仿真时,常规方法是对设备箱体添加激励,测试上方对应位点幅值情况,经常会遇到随着测试位点高度的增加,仿真实测误差逐渐增大的情况。文章基于Feko仿真平台,通过建立多方向平面波模型模拟轨道车辆车体内的电磁环境,补充电磁环境参数后发现对于客室车体内各高度的低频磁场仿真误差得到明显修正。

关键词：轨道车辆电磁环境 Feko 低频磁场

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Space advanced technology demonstration satellite

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Science China(Technological Sciences) 2024年第1期67卷 240-258页

作者： ZHANG Xiaofeng CHEN Wen ZHU XiaoCheng MENG Na HE JunWang BI XingZi ZHANG YongHe SHI Qi LI Fei LIU Rui feng ZhengGong LIU Liu LI JinSong WU HaiChen XU DongXiao LI TaiJie HUANG JiangJiang LIU Shuo LI tiantong YU XianSheng GAO Yang ZHOU Heng BAN HanYu ZHANG YanLi ZHANG YueTing YANG YingQuan HE Tao DUAN XuLiang CHEN Xin WANG YaMin SUN AnTai ZHANG KuoXiang SUN Ying WANG YaoBin FAN ChengCheng XIONG ShaoLin LI XinQiao WEN XiangYang LING ZhiXing SUN XiaoJin ZHANG Chen BAI XianYong WANG ZhanShan DENG YuanYong TIAN Hui YANG Jianfeng XUE HongBo SANG Peng LIU JinGuo ZHENG HuiLong ZHU Xiang HE JianWu LI Hui XU LuXiang XU ShuYan CHEN WenWu LIU ZhenDong WANG ZhaoLi MAO XiangLong GAO Rong LI ZongXuan DING GuoPeng WANG XinYu DOU RunJiang WENG LuBin LUO Hao WANG YaPing LIANG Xianfeng FANG ZiRuo Innovation Academy for Microsatellites Chinese Academy of SciencesShanghai 201203China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China National Astronomical Observatory of China Beijing 100101China Shanghai Institute of Technical Physics Chinese Academy of SciencesShanghai 200083China Institute of Precision Optical Engineering School of Physics Science and EngineeringTongji UniversityShanghai 200092China School of Earth and Space Sciences Peking UniversityBeijing 100871China Xi’an Institute of Optics and Precision Mechanics Chinese Academy of SciencesXi’an 710119China National Space Science Center Chinese Academy of SciencesBeijing 100190China Shenyang Institute of Automation Chinese Academy of SciencesShenyang 110016China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China Institute of Mechanics Chinese Academy of SciencesBeijing 100190China Shanghai Institute of Organic Chemistry Chinese Academy of SciencesShanghai 200032China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China Nanyang Technological University Singapore 569830Singapore Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian 116023China Technical Institute of Physics and Chemistry Chinese Academy of SciencesBeijing 100049China Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Institute of Semiconductors Chinese Academy of SciencesBeijing 100083China Institute of Automation Chinese Academy of SciencesBeijing 100190China School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310058China

The Space Advanced Technology demonstration satellite(SATech-01),a mission for low-cost space science and new technology experiments,organized by Chinese Academy of Sciences(CAS),was successfully launched into a Sun-synchronous orbit at an altitude of~500 km on July 27,2022,from the Jiuquan Satellite Launch *** as an experimental platform for space science exploration and the demonstration of advanced common technologies in orbit,SATech-01 is equipped with 16 experimental payloads,including the solar upper transition region imager(SUTRI),the lobster eye imager for astronomy(LEIA),the high energy burst searcher(HEBS),and a High Precision Magnetic Field Measurement System based on a CPT Magnetometer(CPT).It also incorporates an imager with freeform optics,an integrated thermal imaging sensor,and a multi-functional integrated imager,*** paper provides an overview of SATech-01,including a technical description of the satellite and its scientific payloads,along with their on-orbit performance.

关键词： SATech-01 spacecraft design scientific instruments on-orbit performance

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基于K-means高频局放10 kV避雷器快速带电检测方法

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电测与仪表 2024年第7期61卷 191-196页

作者：李春锋方春华侯轩达董锋河南天通电力有限公司河南平顶山467000 三峡大学湖北宜昌443002 佐贺大学日本佐贺840-8502 武汉康电电气有限公司武汉430070

针对视觉观察、红外测温、泄漏工频电流和直流分量等方法无法快速发现10 kV架空线路上的氧化锌避雷器(metal oxide arrester, MOA)内部受潮及绝缘缺陷问题,文中提出基于K-means智能识别缺陷类型的方法及原理,分别制作10 kV MOA内部受潮... 详细信息

针对视觉观察、红外测温、泄漏工频电流和直流分量等方法无法快速发现10 kV架空线路上的氧化锌避雷器(metal oxide arrester, MOA)内部受潮及绝缘缺陷问题,文中提出基于K-means智能识别缺陷类型的方法及原理,分别制作10 kV MOA内部受潮、阀片裂纹等缺陷实验样品,在无局放升压装置加压至额定电压10 kV的条件下,使用高频电流传感器(high frequency current sensor, HFCT)采集局部放电原始数据,提取特征量,建立对应的缺陷类型数据库;通过在带电运行现场不同测试点测得不同10 kV MOA亚稳态下的13组数据,结果表明该方法对10 kV MOA内部绝缘缺陷、受潮缺陷能够准确识别,验证了基于K-means高频局放10 kV MOA快速带电检测方法的实用性,具有较高的经济效应和社会使用价值。

关键词：氧化锌避雷器快速带电检测高频局部放电缺陷类型数据库 K-means 缺陷类型识别

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干旱下植物根系分泌物及其介导的根际激发效应研究进展

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植物生态学报 2024年第7期48卷 817-827页

作者：龙吉兰蒋铮刘定琴缪宇轩周灵燕冯颖裴佳宁刘瑞强周旭辉伏玉玲华东师范大学生态与环境科学学院浙江天童森林生态系统国家野外科学观测研究站上海200241 上海市农业科学院生态环境保护研究所上海201403 东北林业大学林学院哈尔滨150040

根系分泌物是植物与土壤进行物质能量交换和信息传递的重要媒介,同时也是植物响应外界环境变化的主要形式,在土壤碳库动态中发挥着重要作用。伴随着全球气候变化而频繁发生的极端干旱事件对植物地上地下生长过程都产生了深刻的影响,然而... 详细信息

根系分泌物是植物与土壤进行物质能量交换和信息传递的重要媒介,同时也是植物响应外界环境变化的主要形式,在土壤碳库动态中发挥着重要作用。伴随着全球气候变化而频繁发生的极端干旱事件对植物地上地下生长过程都产生了深刻的影响,然而,由于根-土界面交互作用的复杂性,以及根系分泌物收集手段与装置的不完善,人们对干旱条件下根系分泌物及其介导的根际激发效应的响应及机制的认知尚存在较大的局限性。基于此,该文结合国内外生态学领域的研究前沿动态,论述了干旱下植物根系分泌物数量及组分的动态变化,重点阐述了根系分泌物介导的根际激发效应及其机制,在此基础上展望了未来根系分泌物研究中的重点关注方向,以期为未来全球气候变化条件下土壤碳汇的评估提供科学依据。

关键词：干旱胁迫根系分泌物根际激发效应土壤微生物土壤养分

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省级广播电视节目内容监管体系的建构与实现

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广播与电视技术 2023年第6期50卷 128-132页

作者：苏铭冯国建孙瑞瑞张天桐河南省广播电视局监听监看中心河南450002

本文针对全媒体融合发展现状,在充分利用现有监管平台的基础上,结合5G通信技术创新性地提出了一套“技术+机制”的监管方案,可实现对传统广播电视和新媒体的统一监管,为广播电视行业高效发展提供了思路。

关键词： 5G技术远程广播电视节目内容监管

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Multidimensional amphibian diversity and community structure along a 2600 m elevational gradient on the eastern margin of the Qinghai-Tibetan Plateau

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Zoological Research 2022年第1期43卷 40-51页

作者： Xiao-Yi Wang Mao-Jun Zhong Jian Zhang Xing-feng Si Sheng-Nan Yang Jian-Ping Jiang Jun-Hua Hu Chengdu Institute of Biology Chinese Academy of SciencesChengduSichuan 610041China Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengduSichuan 610065China Zhejiang tiantong Forest Ecosystem National Observation and Research Station School of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China University of Chinese Academy of Sciences Beijing 100049China

Mountain systems harbor an evolutionarily unique and exceptionally rich biodiversity,especially for ***,the associated elevational gradients and underlying mechanisms of amphibian diversity in most mountain systems remain poorly ***,we explored amphibian phylogenetic and functional diversity along a 2600 m elevational gradient on Mount Emei on the eastern margin of the Qinghai-Tibetan Plateau in southwestern *** also assessed the relative importance of spatial(area)and environmental factors(temperature,precipitation,solar radiation,normalized difference vegetation index,and potential evapotranspiration)in shaping amphibian distribution and community *** showed that the phylogenetic and functional diversities were unimodal with elevation,while the standardized effect size of phylogenetic and functional diversity increased linearly with *** net relatedness,nearest taxon index,and functional net relatedness index all showed a positive to negative trend with elevation,indicating a shift from clustering to overdispersion and suggesting a potential change in key processes from environmental filtering to competitive ***,our results illustrate the importance of deterministic processes in structuring amphibian communities in subtropical mountains,with the dominant role potentially switching with *** study provides insights into the underlying assembly mechanisms of mountain amphibians,integrating multidimensional diversity.

关键词： Community structure Elevational gradient Environmental filtering Functional and phylogenetic diversity Mountain systems

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地铁车辆屏蔽效能建模取值方法研究

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数字通信世界 2023年第6期 44-46页

作者：邱玉成冯丽娜夏天童穆晓彤中车南京浦镇车辆有限公司江苏南京210031 深圳市北航检测有限公司广东深圳518052

随着仿真技术的兴起,国内外各种商用仿真软件相继涌现,给轨道交通领域的仿真分析提供了强有力的工具。地铁车辆作为电大尺寸目标对象,在屏蔽分析处理上存在诸多难点。文章提出了一种模型处理与屏蔽数据提取方法,用以解决仿真中常见的模... 详细信息

随着仿真技术的兴起,国内外各种商用仿真软件相继涌现,给轨道交通领域的仿真分析提供了强有力的工具。地铁车辆作为电大尺寸目标对象,在屏蔽分析处理上存在诸多难点。文章提出了一种模型处理与屏蔽数据提取方法,用以解决仿真中常见的模型不收敛、耗时长、计算结果浮动等实际技术问题。

关键词：地铁列车仿真计算屏蔽效能 feko

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