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地下管线综合管理信息系统的安全防护

城市勘测 2020年第5期 90-94页

作者：吴克松颜春城马力兴唐通信科技有限公司北京100191 株洲市城乡建设档案馆湖南株洲412007

地下管线是城市的重要基础设施,被称为城市的“生命线”。随着地下管线的数据化、网络化和智能化发展,地下管线综合管理信息系统的网络安全保密问题日益凸显。通过对地下管线综合管理信息系统自身的脆弱性以及面临的外部威胁进行深入分... 详细信息

地下管线是城市的重要基础设施,被称为城市的“生命线”。随着地下管线的数据化、网络化和智能化发展,地下管线综合管理信息系统的网络安全保密问题日益凸显。通过对地下管线综合管理信息系统自身的脆弱性以及面临的外部威胁进行深入分析,明确了该系统面临的安全风险等级及安全需求,针对性地采取相应的技术防护措施,并结合高效的安全管理方案,构建出全方位安全保障体系。本文对地下管线有关信息系统的安全保密建设具有示范作用和借鉴意义。

关键词：地下管线信息系统脆弱性安全风险安全保密

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EMS诱变白桦种子发芽的条件筛选

分子植物育种 2019年第18期17卷 6073-6079页

作者：安佰义丁晓丽吴双汤昊王嫚刘晓嘉闫春成孙晓刚吉林农业大学园艺学院长春130118 浑江区春晓苗木种植合作社白山134300

为了明确甲基磺酸乙酯(ethy methan sulfonate,EMS)溶液浓度及处理时间对白桦种子发芽时间、发芽率以及幼苗生长的影响,本研究以白桦种子为供试材料,设置4个处理时间(3 h,5 h,7 h,10 h)及6个EMS浓度梯度(0%,0.2%,0.4%,0.6%,0.8%,1.0%)... 详细信息

为了明确甲基磺酸乙酯(ethy methan sulfonate,EMS)溶液浓度及处理时间对白桦种子发芽时间、发芽率以及幼苗生长的影响,本研究以白桦种子为供试材料,设置4个处理时间(3 h,5 h,7 h,10 h)及6个EMS浓度梯度(0%,0.2%,0.4%,0.6%,0.8%,1.0%)对白桦种子进行诱变处理。结果表明:0.2%~1.0%的EMS溶液浸泡处理3~10 h会延迟白桦种子发芽,浓度越高所需初始发芽时间越长;1.0%EMS诱变处理的种子初始发芽平均需要6.92 d,是对照组5.25 d的1.32倍,7 h处理的种子所需的起始发芽时间最长,平均为6.45 d;EMS诱变处理显著降低了白桦种子发芽率,浓度越高处理时间越长发芽率越低;EMS溶液浓度由0%增加到1.0%时,平均发芽率由9.72%降低到3.61%,其中处理时间为10 h时发芽率仅为3.33%;EMS诱变处理显著抑制了幼苗生长,导致茎长和根长明显变短。根据种子发芽及幼苗生长情况,本研究确定EMS诱变处理白桦种子的适宜条件为1.0%处理5 h或0.4%处理7 h。

关键词：白桦(Betula platyphylla) EMS 诱变种子发芽

急性高原反应症状及体征变化对高原脑水肿早期诊断意义的研究

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西南国防医药 2010年第4期20卷 418-420页

作者：王宇亮李素芝郑必海闫春城鲁茸七林谭健西藏军区总医院全军高山病中心拉萨850007

目的观察和随访急进高原后疑似高原脑水肿者(HACE)的症状、体征变化,为制定HACE的早期诊断标准提供依据。方法对24200名急进高原人员进行筛查,对其中162例HACE疑似病例进行观察随访,总结急进高原1w内的症状、体征变化。结果在这些HACE... 详细信息

目的观察和随访急进高原后疑似高原脑水肿者(HACE)的症状、体征变化,为制定HACE的早期诊断标准提供依据。方法对24200名急进高原人员进行筛查,对其中162例HACE疑似病例进行观察随访,总结急进高原1w内的症状、体征变化。结果在这些HACE疑似病例中,有36例最后确诊为HACE。HACE患者早期头痛、呕吐(症状评分≥4)以及呼吸困难、胸闷、咳嗽、紫绀发生率明显高于非HACE组(P<0.05),且经休息及对症治疗后无缓解;HACE发病高峰为急性高原暴露24～72h。结论严重头痛、呕吐症状的出现与早期HACE发病密切相关,尤其当这些症状经15～24h单纯卧床、小流量吸氧及对症治疗后无明显缓解时,应警惕早期HACE的发生。

关键词：低氧高原脑水肿早期诊断症状体征

Preparation and Microscopic Characterization of Asphalt Modified by Ethylene Metal-free Phthalocyanine-dispersed Graphene

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Journal of Wuhan University of Technology(Materials Science) 2022年第1期37卷 66-75页

作者： HUANG Gang HUANG Hao ZHANG Xia HE Junxi ZHOU Chao TAN yan FENG Manman LÜchuncheng National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials Chongqing Jiaotong UniversityChongqing 400074China Xinjiang Transportation Planning SurveyDesign and Research Institute Co.LtdWulumuqi 830006China China Merchants Chongqing Testing Center for Highway Engineering Co. LtdChongqing 400074China

Graphene-modified asphalt(GMA)for road application was prepared via using metal-free phthalocyanine-dispersed to modify an SK-70#base asphalt with *** preparation parameters are as follows:the content of graphene is 0.26%based on the mass percentage of absolute ethanol,the content of nonmetal phthalocyanine is 190%based on the mass percentage of graphene,and then the GMA is prepared via unique high-speed shearing with continuing to ventilate nitrogen,which can prevent the aging of modified asphalt in the high-speed shearing process,and effectively evaluate the *** penetration,softening point,force ductility,and fracture energy of GMA were significantly improved based on the base ***,the incorporation of graphene could enhance the base asphalt’s high-and low-temperature *** modification mechanism was researched via metallographic microscopy,computed tomography(CT),Fourier transform infrared spectroscopy(FTIR),and atomic force microscopy(AFM).Adsorption and physical dispersion of the asphaltenes and resins in the phthalocyanine-graphene system were confirmed.

关键词： ethylene metal-free phthalocyanine GMA performance dispersion and adsorption asphaltene resin

Widespread glacier advances across the Tian Shan during Marine Isotope Stage 3 not supported by climate-glaciation simulations

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Fundamental Research 2023年第1期3卷 102-110页

作者： Qing yan Lewis A.Owen chuncheng Guo Zhongshi Zhang Jinzhe Zhang Huijun Wang Nansen-Zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Meteorological Disaster/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 210044China Department of Marine Earthand Atmospheric ScienceNorth Carolina State UniversityRaleighNC 27695United States NORCE Norwegian Research Centre Bjerknes Centre for Climate ResearchBergenNorway Department of Atmospheric Science School of Environmental StudiesChina University of GeosciencesWuhan 430074China

Whether there were more extensive glaciations during the Marine Isotope Stage(MIS)3 relative to MIS 2 across the Tian Shan in Central Asia is intensely debated because of the uncertainty in chronological data and fully understanding the driving *** help resolve the ongoing debate,we assess the climate sensitivity of the glaciers and reconstruct the extent of glaciation during MIS 2 and 3 across the Tian Shan,using a glacier-resolving(250×250 m)ice sheet model asynchronously coupled with a global climate *** results demonstrate that the equilibrium-line altitude(ELA)over the Tian Shan decreases by∼180 m for every 1°C cooling under a modern precipitation regime,but precipitation reduction greatly lowers the sensitivity of the glaciers to temperature decrease(e.g.,the effect of 2°C cooling is broadly offset by a 50%decrease in precipitation).Under the modeled colder/drier-than-present climate,the model predicts an ELA depression(∆ELA)of∼75 m(162 m)over the Tian Shan during MIS 3 interstadials(stadials).The extent of MIS 3 glaciation is much smaller than that during MIS 2(i.e.,∆ELA=∼726 m).The more extensive glaciation during MIS 2 is largely attributed to the enhanced summer ***,through a site-to-site model-data comparison,we find that the closest match between the modeled glacier margin and the locations of the glacial deposits previously argued to be MIS 3 is generally achieved under MIS 2 climatic *** results suggest more extensive glacier advances over the Tian Shan during MIS 2 than MIS 3 on a regional scale,although MIS 3 glaciation may still occur in individual glacier *** pattern suggests general synchronicity with the timing of maximum Northern Hemisphere ice sheets during the last glacial,which should be further tested in a multimodel framework in the future.

关键词： Glacier modeling Glacier sensitivity MIS 3 MIS 2 Tian Shan Paleoclimate modeling

血常规、血气及血生化改变在高原肺水肿早期诊断中的意义

维普期刊数据库评论

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西南国防医药 2010年第4期20卷 415-417页

作者：李素芝郑必海王宇亮闫春城谭健李珣鲁茸七林西藏军区总医院全军高山病中心拉萨850007

目的对血常规、血气及血生化改变在高原肺水肿(HAPE)早期诊断中的意义进行探讨。方法应用急性高原反应症状评分表,对24200例急进高原人员进行评分,筛选出高度疑似HAPE患者作为重点观察及随访对象,并给予卧床休息及吸氧。对所有重点观察... 详细信息

目的对血常规、血气及血生化改变在高原肺水肿(HAPE)早期诊断中的意义进行探讨。方法应用急性高原反应症状评分表,对24200例急进高原人员进行评分,筛选出高度疑似HAPE患者作为重点观察及随访对象,并给予卧床休息及吸氧。对所有重点观察及随访对象的血常规、血气及血生化(含电解质、肝功、肾功)变化情况进行检测分析。结果重点观察对象中,确诊HAPE组进入高原第1、2、3d的血白细胞总数(WBC)及中性粒细胞比率(N)均显著高于非HAPE组(P<0.01);两组血气结果比较,HAPE组氧分压(PaO2)、二氧化碳分压(PaCO2)、动脉血氧饱和度(SaO2)及氧合指数(FiO2/PaO2)在进入高原第1、2d均显著低于非HAPE组(P<0.01),HAPE组pH值显著高于非HAPE组(P<0.01);两组血生化比较,HAPE组除钾(K+)第2d显著低于非HAPE组外,各指标均无显著差异。结论早期白细胞计数增加及低氧血症持续性进行性加重与HAPE的发病有着密切的关系,加强疑似HAPE患者早期血常规及动脉血气的监测,有利于HAPE的早期诊断。

关键词：高原肺水肿血常规血气血生化早期诊断

Simulation of the water level influence on the difference within the water-tube tiltmeter in Shuangyang Lake

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Earthquake Research Advances 2021年第2期1卷 33-39页

作者： Chong Yue chuncheng Tang Wei yan Xiaodong Pan Xueme Li Yuwen Tan Zongfeng Zhang Tianlong Yu China Earthquake Networks Center Beijing100045BeijingChina Earthquake and Volcano Prediction Research Center of Jilin Province Seismological Bureau Changchun130117JilinChina Fengman Seismostation of Jilin Province Jilin132108JilinChina Shuangyang Seismostation Earthquake Administration of Changchun CityChangchun130060JilinChina

This article analyzes the relationship between the water level and the water-tube tilting in Shuangyang lake,based on the differential deformation features reflected by the NS and EW components of the water-tube *** results show a good spatiotemporal consistency between the variation of water level and the NS tilt component,which is considered to be affected by the magnitude and duration of the water level variation in Shuangyang *** article uses Landsat remote sensing image data to extract the water boundary of Shuan-gyang Lake,and takes advantage of the finite element numerical simulation method to build three-dimensional models for different geological structural conditions of the Shuangyang *** simulation results show that when the underground medium is granite,the effect of water level variation on the vertical displacement of the surface is *** a 50-m soil layer in Model 2,the simulated NS tilt variation is equivalent to the actual observed water-tube tiltmeter NS component when the water level variation is 0.44 m and *** the variation of water level reaches 2.0m,the simulation result of the NS component is 79.6 ms,which is slightly larger than the observed result of 60.32 ***,the simulation results show that the variation of the EW component is significantly smaller than that of the NS *** to the fact that the Shuan-gyang lake is long in the NS direction and short in the EW direction,the existence of the soil layer tends to generate ground deformation along the NS direction in the vicinity of the lake after the increase of water level,thereby resulting in the difference of the ground deformation in the two directions.

关键词： Water-tube tiltmeter at shuangyang seismostation Water level of shuangyang lake Finite element method Difference of the ground deformation

阶梯法与非阶梯法进入海拔4500m高原AHAD发病率调查

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西南国防医药 2015年第2期25卷 230-231页

作者：黄学文李素芝谢晓娥黄跃闫春城殷作明黄雪琴吴亮杨振翰西藏军区总医院全军高山病中心拉萨850007

目的观察阶梯法、非阶梯法进入特高海拔高原急性高原病（AHAD）发病率。方法经体检健康的内地人员6521名,分为阶梯法进入组（4352名）和非阶梯法进入组（2169名）;阶梯法进入组：先乘飞机到达拉萨（海拔3650 m）,休息3～4 d后再乘汽车... 详细信息

目的观察阶梯法、非阶梯法进入特高海拔高原急性高原病（AHAD）发病率。方法经体检健康的内地人员6521名,分为阶梯法进入组（4352名）和非阶梯法进入组（2169名）;阶梯法进入组：先乘飞机到达拉萨（海拔3650 m）,休息3～4 d后再乘汽车到达海拔4500 m地区;非阶梯法进入组：乘飞机到拉萨后,当天乘汽车进入海拔4500 m地区。统计两组人员于进入高原后1～14 d内AHAD发病率。结果阶梯法进入组AHAD发病率为15.88%（691/4352）,非阶梯法进入组发病率为74.96%（1626/2169）,组间比较有非常显著性差异（P〈0.01）。结论阶梯法可以显著减低进入特高海拔高原AHAD发病率。

关键词：高原阶梯法急性高原病

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EPO单克隆抗体抑制CFU-E研究

西南国防医药 2014年第1期24卷 14-17页

作者：黄学文李素芝黄跃谢晓饿刘厚东闫春城石泉贵丁浩平何锋陈有西藏军区总医院高山病科拉萨850000

目的探讨EPO单克隆抗体是否具有抑制红系集落形成单位(CFU-E)形成的功能。方法对大鼠骨髓进行定向体外CFU-E培养,按以下条件进行分组培养:空白对照组(不加EPO)、常规组(加EPO,不加EPO单克隆抗体)、EPO单克隆抗体干预组(EPO+EPO单克隆抗... 详细信息

目的探讨EPO单克隆抗体是否具有抑制红系集落形成单位(CFU-E)形成的功能。方法对大鼠骨髓进行定向体外CFU-E培养,按以下条件进行分组培养:空白对照组(不加EPO)、常规组(加EPO,不加EPO单克隆抗体)、EPO单克隆抗体干预组(EPO+EPO单克隆抗体)。培养168 h后,观察各组CFU-E数量。结果空白对照组、常规组、EPO单克隆抗体干预组的CFU-E集数落分别为0.0±0.0、151.8±23.3和10.7±3.9。EPO单克隆抗体干预组与常规组比较,CFU-E集落数存在非常显著性差异(P<0.01)。结论该EPO单克隆抗体可明显抑制CFU-E形成,即抑制红细胞系的增殖,是治疗高原红细胞增多症的可能药物。

关键词：红系集落形成单位促红细胞生成素抗体骨髓大鼠