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Projection of the Zhujiang(Pearl) River Delta's potential submerged area due to sea level rise during the 21st century based on CMIP5 simulations

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Acta Oceanologica Sinica 2015年第9期34卷 78-84页

作者： XIA Jiangjiang yan Zhongwei ZHOU Wen FONG Soi Kun LEONG Ka Cheng TANG Iu Man CHANG S W LEONG W K JIN shaofei Key Laboratory of Regional Climate-Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of Sciences Guy Carpenter Asia-Pacific Climate Impact Centre School of Energy and EnvironmentCity University of Hong Kong Macao Meteorological and Geophysical Bureau

Projections of potential submerged area due to sea level rise are helpful for improving understanding of the influence of ongoing global warming on coastal areas. The Ensemble Empirical Mode Decomposition method is used to adaptively decompose the sea level time series in order to extract the secular trend component. Then the linear relationship between the global mean sea level （GMSL） change and the Zhujiang （Pearl） River Delta （PRD） sea level change is calculated： an increase of 1.0 m in the GMSL corresponds to a 1.3 m （uncertainty interval from 1.25 to 1.46 m） increase in the PRD. Based on this relationship and the GMSL rise projected by the Coupled Model Intercomparison Project Phase 5 under three greenhouse gas emission scenarios （representative concentration pathways, or RCPs, from low to high emission scenarios RCP2.6, RCP4.5, and RCP8.5）, the PRD sea level is calculated and projected for the period 2006-2100. By around the year 2050, the PRD sea level will rise 0.29 （0.21 to 0.40） m under RCP2.6, 0.31 （0.22 to 0.42） m under RCP4.5, and 0.34 （0.25 to 0.46） m under RCP8.5, respectively. By 2100, it will rise 0.59 （0.36 to 0.88） m, 0.71 （0.47 to 1.02） m, and 1.0 （0.68 to 1.41） m, respectively. In addition, considering the extreme value of relative sea level due to land subsidence （i.e., 0.20 m） and that obtained from intermonthly variability （i.e., 0.33 m）, the PRD sea level will rise 1.94 m by the year 2100 under the RCP8.5 scenario with the upper uncertainty level （i.e., 1.41 m）. Accordingly, the potential submerged area is 8.57x103 km2 for the PRD, about 1.3 times its present area.

关键词： sea level Zhujiang (Pearl) River Delta (PRD) representative concentration pathways (RCPs) CMIP5 submerged area Ensemble Empirical Mode Decomposition (EEMD)

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互联网+背景下外科多法联动混合式教学质量测评及分析

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中医教育 2021年第3期40卷 76-81页

作者：安佳琳杨成城余文张凡帆刘宝清张少辉王辉裴文婧刘会良门斯烨张栋陈子彦王玉坤闫昭飞北京中医药大学东方医院北京100078

目的了解两个年级共205名学生训练前后批判性思维倾向的变化,结合理论及临床操作能力成绩进行统计学分析,明确是否混合式教学较传统教学更具优势?方法研究组采用混合式教学并引入多种教学方法进行教学,与传统教学的对照组进行批判性思... 详细信息

目的了解两个年级共205名学生训练前后批判性思维倾向的变化,结合理论及临床操作能力成绩进行统计学分析,明确是否混合式教学较传统教学更具优势?方法研究组采用混合式教学并引入多种教学方法进行教学,与传统教学的对照组进行批判性思维调查量表,OSCE考核以及期末书面考试成绩3个方面的测评并统计分析。结果经统计发现批判性思维调查结果除维度5(评判思维的自信心)无显著统计学差异以外其余维度及总分提示两个年级之间存在显著性差异,OSCE成绩以及书面考试成绩无显著统计学差异。结论混合式教学对于提高学生批判性思维能力有积极的作用,可帮助提高学生的开放性思维、创造力及求知欲等,总体效果优于传统教学。

关键词：互联网+ 混合式教学外科教学

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Seasonal variation analysis of atmospheric CH_4,N_2O and CO_2 in Tianjin offshore area

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Science China Earth Sciences 2010年第8期53卷 1205-1215页

作者： KONG shaofei, LU Bing, HAN Bin, BAI ZhiPeng, XU Zhun, YOU yan, JIN LiangMao, GUO Xiaoyang & WANG Rui State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control College of Environmental Science and Engineering Nankai University Tianjin China

The concentrations of CH4, N2O and CO2 at the sea level were observed from November 2007 to August 2008 in order to study the greenhouse gases in the Tianjin offshore area of Bohai Sea. CH4 concentrations varied from 1.87 to 2.61 ppm with the highest value appearing in summer and the lowest in winter. The concentration range of N2O was 319.3 to 347.7 ppb, with the maximal value appearing in winter. CO2 was higher in the heating season than in non-heating season in this area. Concentrations of the three greenhouse gases in the study area exceeded the 2005 global background values. Backward trajectory model was used to analyze the sources. All three gases were influenced evidently by continental sources in the inshore area during the sampling periods. Every gas was compared with each other by correlation analysis, showing that the correlation of CO2 and N2O was more significant than to CH4 and their relationship with meteorological factors was consistent. It can be concluded these three greenhouse gases may be influenced by some similar sources, especially for CO2 and N2O.

关键词： Bohai Sea greenhouse gas offshore observation backward trajectory model sources

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燃煤电厂和民用燃煤排放细颗粒物的微观特征及差异

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煤炭学报 2022年第12期47卷 4388-4394页

作者：张银晓刘磊严沁孔少飞李卫军浙江大学地球科学学院浙江杭州310027 中国地质大学环境学院湖北武汉430074

燃煤电厂和民用燃煤是我国空气污染的主要贡献源,而获取其排放颗粒物的形貌、组分、混合状态等微观信息对于大气颗粒物的溯源工作具有重要意义。利用透射电子显微镜和X射线能谱仪获取了山东和江苏某燃煤电厂和山东农村民用燃煤所排放细... 详细信息

燃煤电厂和民用燃煤是我国空气污染的主要贡献源,而获取其排放颗粒物的形貌、组分、混合状态等微观信息对于大气颗粒物的溯源工作具有重要意义。利用透射电子显微镜和X射线能谱仪获取了山东和江苏某燃煤电厂和山东农村民用燃煤所排放细颗粒物的形貌、组分、混合状态和粒径分布等单颗粒特征并进行了对比。研究结果显示,在燃煤电厂所排放的细颗粒物中,矿物颗粒和富硫颗粒等非碳质颗粒物占主导,占所分析颗粒物总数的93.6%。这些矿物颗粒主要是由硅、氧和金属元素组成,而富硫颗粒主要由硫元素组成。在民用燃煤所排放的细颗粒物中,有机颗粒和黑碳颗粒等碳质颗粒物占主导。研究发现,民用燃煤在明烧和闷烧过程中所排放细颗粒物的形貌和组分也具有较大差异。民用燃煤在明烧过程会排放大量的黑碳颗粒,其占所分析颗粒物总数的96.9%;这些黑碳颗粒主要由碳元素组成,并呈长链状或团簇状。而民用燃煤在闷烧过程主要排放有机颗粒,其也由碳元素组成,但呈圆形或近圆形的半透明状。粒径分析结果显示,燃煤电厂所排放细颗粒物的粒径峰值在700 nm左右,高于民用燃煤的500 nm。燃烧工况的差异是导致燃煤电厂和民用燃煤所排放细颗粒物存在巨大差异的主要原因。

关键词：燃煤电厂民用燃煤单颗粒源排放碳质颗粒物

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Pepper mild mottle virus coat protein interacts with pepper chloroplast outer envelope membrane protein OMP24 to inhibit antiviral immunity in plants

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Horticulture Research 2023年第5期10卷 16-28页

作者： Kelei Han Hongying Zheng Dankan yan Huijie Zhou Zhaoxing Jia Yushan Zhai Jian Wu Yuwen Lu Guanwei Wu shaofei Rao Jianping Chen Jiejun Peng Rende Qi Fei yan State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Institute of Plant VirologyNingbo UniversityNingbo315211China Institute of Plant Protection and Agro-Products Safety Anhui Academy of Agricultural SciencesHefeiAnhui 230031China

Pepper mild mottle virus(PMMoV)is a devastating viral pathogen of pepper(Capsicum annuum)but it is unclear whether and how peppers protect against PMMoV *** expression of the chloroplast outer membrane protein 24(OMP24)of *** was upregulated under PMMoV infection and it interacted with PMMoV coat protein(CP).Silencing of OMP24 in either *** or Nicotiana benthamiana facilitated PMMoV infection,whereas overexpression of *** OMP24 in transgenic plants inhibited PMMoV *** *** OMP24(CaOMP24)and *** OMP24(NbOMP24)localized to the chloroplast and have a moderately hydrophobic transmembrane domain that is necessary for their *** of CaOMP24 induced stromules,perinuclear chloroplast clustering,and accumulation of reactive oxygen species(ROS),the typical defense responses of chloroplasts transferring the retrograde signaling to the nucleus to regulate resistance *** expression of PR1 and PR2 was also upregulated significantly in plants overexpressing ***-interaction of OMP24 was demonstrated and was required for OMP24-mediated plant *** with PMMoV CP interfered with the self-interaction of OMP24 and impaired OMP24-induced stromules,perinuclear chloroplast clustering and ROS *** results demonstrate the defense function of OMP24 in pepper during viral infection and suggest a possible mechanism by which PMMoV CP modulates the plant defense to facilitate viral infection.

关键词： outer immunity envelope

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高各向异性十六酸/膨胀石墨定形相变储热材料的性能

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材料导报 2021年第4期35卷 4186-4193页

作者：吴韶飞闫霆蒯子函潘卫国上海电力大学能源与机械工程学院上海200090 机械工业清洁发电环保技术重点实验室上海200090

以十六酸(Hexadecanoic acid,HA)作为基材,添加硫化膨胀石墨(Expanded graphite,EG)作为高导热支撑材料,采用改进的熔融共混⁃凝固定形法制备了高定形精度的HA/EG复合相变材料(Phase change materials,PCMs)样品。对不同参数的复合定形P... 详细信息

以十六酸(Hexadecanoic acid,HA)作为基材,添加硫化膨胀石墨(Expanded graphite,EG)作为高导热支撑材料,采用改进的熔融共混⁃凝固定形法制备了高定形精度的HA/EG复合相变材料(Phase change materials,PCMs)样品。对不同参数的复合定形PCMs的热性能进行了系统的测试,考察了样品的微观结构、官能团分布和结晶相以及不同质量分数的EG和样品密度对定形PCMs热性能的影响规律。结果表明,HA与EG均匀混合,且随着HA质量分数和样品密度的增大,两相结合的饱满度提高;HA与EG之间未发生化学反应,仅通过物理作用将HA吸附至EG的多孔结构;纯HA和EG质量分数为30%的定形PCMs的熔融焓分别为275.35 kJ/kg和193.01 kJ/kg,熔点分别为59.53℃和61.08℃。当EG的质量分数为30%且样品密度为900 kg/m3时,HA/EG定形PCMs的水平热导率高达38.42 W/(m·K),相比于纯HA(0.162 W/(m·K))提高了约236倍;而其垂直热导率仅为2.68 W/(m·K),还不及水平热导率的1/14,表现出较高的各向异性。循环稳定性测试结果表明,EG的质量分数为24%和30%的各样品的泄漏量极小,其泄漏量低于0.85%,均未出现明显的泄漏,表现出良好的储/放热循环稳定性。HA/EG定形PCMs是一种性能优良的潜热储存材料,在太阳能热利用中具有广阔的应用前景。

关键词：十六酸膨胀石墨定形相变材料各向异性储热性能

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Polycyclic aromatic hydrocarbons (PAHs) in PM2.5 around 2013 Asian Youth Games period in Nanjing

Polycyclic aromatic hydrocarbons (PAHs) in PM2.5 around 2013...

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第十二届全国气溶胶会议暨第十三届海峡两岸气溶胶技术研讨会

作者： Xuxu Li shaofei Kong yan Yin Li Li Liang Yuan Qi Li Hui Xiao Kui Chen Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration Nanjing University of Information Science & Technology Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology

Eighteen polycyclic aromatic hydrocarbons(PAHs) in PM2.5 collected near the Nanjing Olympic Sport Center across the Asian Youth Games(AYG) period(from 2 August to 28 August, 2013) are analyzed using GC-MS. Their levels, sources and health risks to human are discussed. The results show that the total concentrations of PAHs in PM2.5 are 9.43, 7.21 and 8.83 ng m-3 for pre-(3-15 August), during(16-24 August) and post(25-28 August) the AYG periods, respectively. They are dominated by5-ring and 6-ring PAHs. The total PAHs in PM2.5 decreased by 24% during AYG period, when compared with those for pre-AYG period. For combustion-derived PAHs and carcinogenic PAHs, they decreased by 26% and 21%. It implied that the pollution control measures implemented during the AYG can effectively reduce the emission of PAHs from various sources, especially from the heavy-duty diesel vehicles. The poor correlations between PAHs and meteorological parameters also favored the variations of PAHs raised by the changes of emission sources. Diagnostic ratios and principal component analysis(PCA) revealed that vehicle emission and coal combustion were the main contributors, with minimal effects from biomass burning and petroleum. The health risks for human exposed to PAHs in PM2.5 were quantitatively assessed by BaP equivalent concentration(BaP eq) and the incremental lifetime cancer risk(ILCR).The estimated ILCR for PAHs during the AYG periods decreased by 0.28 and 1.39 per 1,000,000 exposed children and adults than those before the AYG, respectively. It indicates that the pollution control measures effectively reduced the risk levels of PAHs to sportsmen or human gathered around the Olympic Sport Center.

关键词： polycyclic aromatic hydrocarbons PM2.5 source identification health risk pollution control measures mega event

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One-year status of hepatic venous pressure gradient measurement from 85 hospitals in China

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Portal Hypertension & Cirrhosis 2024年第2期3卷 116-123页

作者： Jitao Wang Ting Cui Linpeng Zhang Zhiping yan Lei Li Jinjun Chen Junhui Sun Hua Xiang He Zhu Hao Wu Jiancuo Gengzang Feng Zhang Wei Wu Guohong Cao Wuhua Guo Haibin Shi Hui Xue Guangjun Huang Qiang Yu Meng Niu Huiling Xiang Derun Kong Wei Gou Xuefeng Luo Fuliang He Min Yuan Wei Liu Yong Wang Hongjie Hu Xiaoli Zhu Tao Yu Qinxue Sun Wei Qu Ting Lu Deqiang Ma Li Zhang Jun Ma Jun yang Ketao Mu Xiaoliang Zhu Kai Xiong Huiguo Ding Shengjuan Yao Mingsheng Huang Fang Wang Zexin Wang Yong Huang Jianan Li Hongfeng Yi Birun Huang Zhongwei Zhao Duiping Feng yanming Lei Changlong Hou Wenbo Guo Shirong Liu Gaojun Teng Kangshun Zhu Fan Wu Xiaogang Hu Wenfeng Zhang Shaoqi yang Zhouchao Hu Pengfei Pang Shaowu Zhuang Weidong Wang Qingliang Zhu Kunpeng Zhang Chengyu Liu Dongliang Li Chao Ma Hong Jiang Xingong Zhao Weixin Ren Zhiwei Wang Lei Yu Fuhuang Lin Chaoguang yan Feng Wang Lei Yu Hui Huan Wenyong Shen shaofei He Chengda Zhang Jinlun Bao Jiangtao Liu Jun Wu Jianbo Zhao Jian Zhang Xiaolong Qi Hebei Provincial Key Laboratory of Cirrhosis&Portal Hypertension Xingtai People's HospitalXingtaiHebeiChina Center of Portal Hypertension Department of RadiologyZhongda HospitalSchool of MedicineSoutheast UniversityNanjingJiangsuChina Department of Interventional Therapy Beijing Shijitan Hospital Affiliated to Capital Medical UniversityBeijingChina Department of Intervention Taiyuan Third People's HospitalTaiyuanShanxiChina Department of Intervention Zhongshan Hospital Affiliated to Fudan UniversityShanghaiChina Department of Interventional Medicine The First Hospital of Lanzhou UniversityLanzhouGansuChina Department of Infectious Diseases Nanfang Hospital of Southern Medical UniversityGuangzhouGuangdongChina Hepatobiliary and Pancreatic Intervention Center The First Affiliated Hospital of Zhejiang University School of MedicineHangzhouZhejiangChina Interventional Vascular Surgery Hunan Provincial People's HospitalChangshaHunanChina Department of Intervention Sixth People's Hospital of ShenyangShenyangLiaoningChina Department of Gastroenterology West China Hospital of Sichuan UniversityChengduSichuanChina Department of Intervention The Fourth People's Hospital of Qinghai ProvinceXiningQinghaiChina Department of Gastroenterology Nanjing Drum Tower HospitalNanjingJiangsuChina Department of Gastroenterology The First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiangChina Department of Radiology Shulan(Hangzhou)HospitalHangzhouZhejiangChina Department of Intervention Mengchao Hepatobiliary Hospital of Fujian Medical UniversityFuzhouFujianChina Department of Interventional Radiology The First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuChina Department of Gastroenterology The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'anShaanxiChina Department of Gastroenterology Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina Department of Interventional Radiology Fifth Medical Center

Aims:Surveys and research on the applications of the hepatic venous pressure gradient(HVPG)are important for understanding the current status and future development of this technology in *** article aimed to investigate the status of hepatic venous pressure gradient measurement in China in ***:We investigated the overall status of HVPG technology in China-including hospital distribution,hospital level,annual number of cases,catheters used,average cost,indications,and current challenges by using online *** counting the number and percentages of cases of these results,we hope to clarify the current status of HVPG measurements in ***:According to the survey,85 hospitals in China used HVPG technology in 2022 distributed across 29 provinces.A total of 4989 HVPG measurements were performed in all of the surveyed hospitals in 2022,of which 2813 cases(56.4%)were measured *** average cost of HVPG measurement was 5646.8±2327.9 *** the clinical teams who performed the measurements(sometimes multiple per hospital),94.3%(82/87)used the balloon method,and the majority of the teams(72.4%,63/87)used embolectomy ***:This survey clarified the clinical application status of HVPG in China and confirmed that some medical institutions in China have established a foundation for this *** is still necessary to continue promoting and popularizing this technology in the future.

关键词： application status hepatic vein pressure gradient questionnaire survey

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甘蓝挥发物对小菜蛾幼虫取食行为的影响

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山西农业大学学报（自然科学版） 2022年第2期42卷 65-72页

作者：原少斐邓彩萍郝赤闫喜中山西农业大学植物保护学院山西太谷030801 山西农业大学林学院山西太谷030801

[目的]明确寄主植物甘蓝(Brassica oleracea L.)挥发物对小菜蛾(Plutella xylostella)幼虫取食行为反应的影响,为筛选小菜蛾植物源引诱剂提供理论依据。[方法]利用Y型嗅觉仪测定小菜蛾幼虫雌雄虫对甘蓝3种活性挥发物的嗅觉反应,通过田... 详细信息

[目的]明确寄主植物甘蓝(Brassica oleracea L.)挥发物对小菜蛾(Plutella xylostella)幼虫取食行为反应的影响,为筛选小菜蛾植物源引诱剂提供理论依据。[方法]利用Y型嗅觉仪测定小菜蛾幼虫雌雄虫对甘蓝3种活性挥发物的嗅觉反应,通过田间试验测定在挥发物存在下小菜蛾幼虫对花椰菜植株的取食效果。[结果]甘蓝3种挥发物能够引起小菜蛾幼虫嗅觉反应,但不同浓度下引诱选择率不同。异硫氰酸烯丙酯浓度为1μg·μL;时对雌雄小菜蛾幼虫均表现出极显著引诱效果,引诱率分别为75%和80%;浓度为10μg·μL;的异硫氰酸丁酯对雌、雄幼虫的引诱率分别为75%和80%;顺-3-己烯醇对幼虫雄虫引诱率为70%;在田间取食试验中,3种化合物总体上可以促进小菜蛾幼虫取食,取食指数均显著高于对照,然而浓度为500μg·μL;的异硫氰酸烯丙酯则对雄性幼虫表现出拒食效果。[结论]异硫氰酸烯丙酯、异硫氰酸丁酯和顺-3-己烯醇对小菜蛾幼虫具有较强的引诱作用,这些可为治理小菜蛾为害十字花科植物提供新的思路和方法。

关键词：小菜蛾幼虫寄主植物挥发物取食行为

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陕北烧变岩水−岩作用的劣化特性

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煤田地质与勘探 2023年第4期51卷 76-84页

作者：胡鑫孙强晏长根赵春虎王少飞陕西省煤矿水害防治技术重点实验室陕西西安710077 陕西省煤炭绿色开发地质保障重点实验室陕西西安710054 西安科技大学地质与环境学院陕西西安710054 中煤科工西安研究院(集团)有限公司陕西西安710077 长安大学公路学院陕西西安710064 陕西理工大学土木工程与建筑学院陕西汉中723001

鄂尔多斯盆地东北缘陕晋蒙交界地区存在大量煤火高温烘烤形成的烧变岩。与原岩相比,烧变后的岩体结构破碎孔隙发育,在长期水–岩作用下,形成了大量危岩体。以陕北神木大柳塔地区的烧变岩为对象,开展了50次干湿循环试验,测试不同循环次... 详细信息

鄂尔多斯盆地东北缘陕晋蒙交界地区存在大量煤火高温烘烤形成的烧变岩。与原岩相比,烧变后的岩体结构破碎孔隙发育,在长期水–岩作用下,形成了大量危岩体。以陕北神木大柳塔地区的烧变岩为对象,开展了50次干湿循环试验,测试不同循环次数后烧变岩物理性质与力学性质及其变化,探讨不同烧变程度烧变岩劣化特性。结果表明:烧变岩质量、硬度、力学性质下降,表面亮度降低,粗糙度与红黄色度增强;基于低场核磁共振技术(NMR)测试,烧变岩孔隙体积比例曲线右移,最大孔径扩张;微孔向大孔转化,大孔含量与总孔隙率升高;烧变作用使岩体孔隙发育,且提高了烧变岩的抗侵蚀能力,降低了色度、质量、粗糙度、硬度、力学性质的变化程度。长期水–岩作用可对烧变岩的物理力学性质与孔隙结构造成明显改变,烧变程度与初始孔隙结构能够影响劣化效果。根据研究不同烧变岩的劣化过程,得出加固低烧变程度岩体表面、加固沉积层理与原有裂隙、堵塞高烧变程度岩体孔隙,可降低水−岩作用的侵蚀破坏强度。

关键词：烧变岩水−岩作用劣化特性干湿循环孔隙结构陕北地区

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