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Characterizations of volatile organic compounds(VOCs) from vehicular emissions at roadside environment: The first comprehensive study in Northwestern China

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Characterizations of volatile organic compounds(VOCs) from v...

Development of Multiplex Real-Time PCR for Simultaneous Detection of Rhree Potyviruses in Tobacco Plants

第十三届全国气溶胶会议

作者： Bowei LI Steven Sai Hang HO Yonggang XUE Yu HUANG Liqin WANG Yan CHENG Wenting dai Haobin ZHONG Junji CAO Shuncheng LEE Key Laboratory of Aerosol Chemistry and Physics Institute of Earth EnvironmentChinese Academy of Sciences Department of Environmental Science and Technology School of Human Settlements and Civil EngineeringXi'an Jiaotong University State Key Lab of Loess and Quaternary Geology(SKLLQG) Institute of Earth EnvironmentChinese Academy of Sciences Division of Atmospheric Sciences Desert Research Institute Department of Civil and Environmental Engineering The Hong Kong Polytechnic University

Vehicular emission(VE) is one of the important anthropogenic sources for ground-level volatile organic compounds(VOCs) in both urban and suburban *** comprehensive campaign was conducted at an urban roadside in xi’an, China in summer, 2016.A total of 57 VOCs, as known as critical surface ozone(O) precursors, and other trace gases were measured simultaneously during the sampling ***, a tracer of gasoline evaporation, was the most abundant VOC in the roadside samples, followed by isobutane and benzene, attributed to the largest composition(0%) of gasoline-fueled vehicles on the *** molar ratio of toluene/benzene(T/B) in our study(0.36) is far lower than the range reported in other cities, indicating the stronger contributions from diesel *** results of source apportionment achieved with positive matrix factorization(PMF) receptor model were highly consistent with the vehicles compositions, strongly evidenced that the precise characterization of the VE sources from those marker *** degrees of individual compound contributed to O production were weighed by ozone formation potential(OFP).Propylene(20%), 1-butene(11%) andiso-pentane(10%) were the top three contributors at the *** information of this study complements the VOCs database regarding to the VE sources in Northwestern China.

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Development of Multiplex Real-Time PCR for Simultaneous Dete...

中国植物病理学会2012年学术年会

作者： dai Jin~1 PENG Hu~2 CHEN Wei~1 CHENG Ju-Long~3 WU Yun-Feng~(1*) (1.State Key Laboratory of Crop Stress Biology in Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of ministry of Agriculture,College of Plant Protection,Northwest A&F University,Yangling 712100,China 2.College of Animal Science and Technology, Northwest A&F University,Yangling 712100,China 3.Shaanxi Tobacco Research Institute,xi''an,710061 China)

＜正＞To develop a multiplex real-time PCR assay using TaqMan probes for the simultaneous detection and quantification of Tobacco etch virus（TEV）,Potato virus Y（PVY） and Tobacco vein banding mosaic virus（TVBMV）.Specific primer and probe combinations for TEV and TVBMV were developed from the coat protein region of the viral *** detect PVY,a primer and probe combination PVY-Univ F,PVY-Univ R and PVY-Univ P for amplifying the coat protein region of the virus genome was *** detection limit of multiplex real-time PCR for these viruses was 10 copies number/μl of the standard *** multiplex reaction was successful in detection of these three pathogens,with no non-specific amplification and cross-reaction was *** multiplex real-time PCR provides a rapid, effective,specific and sensitive method for the simultaneous detection and quantification of the three pathogens on infected tobacco *** multiplex real-time PCR not only will be useful for diagnostic, ecological,epidemiology and pathogenesis studies,and investigations of host/virus or virus/virus interactions, especially when the host is infected with more than one virus.

关键词： Tobacco etch virus Potato virus Y Tobacco vein banding mosaic virus Multiplex real-time PCR

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地铁车辆基地低影响开发模式研究

吉林水利 2021年第12期 28-33页

作者：代文江中铁第一勘察设计院集团有限公司陕西西安710043

采用分布式水文模型SWMM(storm water management model)作为研究手段,选取西安地铁四号线航天城车辆基地作为研究对象,根据实际的下垫面情况和管网情况建立了SWMM模型,采用Morris筛选法进行模型参数敏感性分析,对模型的敏感性参数进行... 详细信息

采用分布式水文模型SWMM(storm water management model)作为研究手段,选取西安地铁四号线航天城车辆基地作为研究对象,根据实际的下垫面情况和管网情况建立了SWMM模型,采用Morris筛选法进行模型参数敏感性分析,对模型的敏感性参数进行率定。利用芝加哥雨型及西安市地区暴雨公式,合成不同重现期下的降雨时间序列,并利用所构建模型对1年一遇、5年一遇及10年一遇2小时降雨重现期下,开发前、现状、及添加不同LID(Low Impact Development)措施组合后排水状况分别进行模拟。结果表明,添加经济合理的LID措施(绿色屋顶+植草沟+渗透铺装)可以控制径流总量与峰值流量同时达到开发前水平。通过模拟最优LID措施模式在不同降雨重现期条件下的径流控制效果,表明在降雨量较小的情况下,设置LID措施对径流总量和峰值流量的控制效果更明显,随着降雨重现期的增大,LID措施对径流总量和峰值的削减有所减少。采用SWMM模型能够有效模拟车辆基地在不同开发模式下的水文状态,研究结果可为地铁车辆基地内海绵建设项目评估提供技术支持和依据。

关键词：车辆基地 LID措施径流削减 SWMM

长江经济带服务业集聚对新型城镇化的影响研究——空间溢出效应的视角

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长江流域资源与环境 2022年第7期31卷 1413-1425页

作者：戴一鑫吕有金卢泓宇南京财经大学国际经贸学院江苏南京210046 安徽工业大学商学院安徽马鞍山243032 西安财经大学经济学院陕西西安710100

基于人口城镇化等6个维度共27个指标,利用熵权法对长江经济带11个省份(直辖市)的新型城镇化发展水平进行了综合测度,进一步利用空间计量模型从空间视角分析服务业集聚对新型城镇化所产生的影响。研究结果表明:(1)长江经济带服务业集聚... 详细信息

基于人口城镇化等6个维度共27个指标,利用熵权法对长江经济带11个省份(直辖市)的新型城镇化发展水平进行了综合测度,进一步利用空间计量模型从空间视角分析服务业集聚对新型城镇化所产生的影响。研究结果表明:(1)长江经济带服务业集聚具有显著的空间依赖特征。(2)服务业集聚水平的提升能够有效推动长江经济带新型城镇化建设的进程,并且产生较为显著的空间溢出效应,这表明服务业集聚在提高本省份新型城镇化水平的同时还能够带动邻近区域新型城镇化的发展。(3)政府过度干预不利于本地区新型城镇化的建设;对外开放水平的提升则能够推动本地区新型城镇化建设。对此,充分发挥服务业集聚对新型城镇化建设所产生的推动作用,将服务业集聚区域作为产生城市功能溢出效应的核心区域,完善核心区域的基础设施及公共服务配套设施,通过溢出效应不断带动邻近区域的新型城镇化发展。

关键词：长江经济带服务业集聚新型城镇化空间杜宾模型空间溢出效应

Development of multiplex real-time PCR for simultaneous detection of three Potyviruses in tobacco plants

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Development of multiplex real-time PCR for simultaneous dete...

中国植物病理学会2012年学术年会

作者： dai Jin~1 PENG Hu~2 CHEN Wei~1 CHENG Ju-Long~3 WU Yun-Feng~1 (1.State Key Laboratory of Crop Stress Biology in Arid Areas and Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, College of Plant Protection,Northwest A&F University,Yangling, 712100,China 2.College of Animal Science and Technology,Northwest A&F University,Yangling,712100,China 3.Shaanxi Tobacco Research Institute,xi''an 710061,China)

关键词： Tobacco etch virus Potato virus Y Tobacco vein banding mosaic virus Multiplex real-time PCR

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《鲁班经》“椶焦亭”考释

湘南学院学报 2022年第4期43卷 84-89页

作者：戴启飞西北大学文学院陕西西安710119

鲁班经》“椶焦亭”词义不明,无法确定建筑形制。释读该条目内“四柱落地”“上三超四”等重要术语发现,“椶焦亭”命名与举折法有关,其形制为双层、重檐、四角攒尖,亭顶举折比例为三分之一。 “举折”有“陠”“峻”“陠峭”等异称,... 详细信息

鲁班经》“椶焦亭”词义不明,无法确定建筑形制。释读该条目内“四柱落地”“上三超四”等重要术语发现,“椶焦亭”命名与举折法有关,其形制为双层、重檐、四角攒尖,亭顶举折比例为三分之一。 “举折”有“陠”“峻”“陠峭”等异称,显示出不同角度的构词理据,其中“峻峭”即是“椶焦”的正确词形,“椶”是“峻”的义符改换及形近讹变,讹变链条为“峻→梭→■→椶”,“焦”是“峭”的音近假借或音讹致误。 “峻峭”既表示该建筑系使用举折法修造而成,又形容其屋顶曲面折线坡度陡峭。

关键词：《鲁班经》举折法古建筑术语疑难词

Ancient DNA reveals the maternal genetic history of East Asian domestic pigs

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Journal of Genetics and Genomics 2022年第6期49卷 537-546页

作者： Ming Zhang Yichen Liu Zhipeng Li Peng Lü Jacob D.Gardner Maolin Ye Jihuai Wang Miaomiao Yang Jing Shao Weilin Wang Qingyan dai Peng Cao Ruowei Yang Feng Liu xiaotian Feng Lizhao Zhang Enwei Li Yunzheng Shi Zehui Chen Shilun Zhu Weiwei Zhai Tao Deng Ziyuan Duan E.Andrew Bennett Songmei Hu Qiaomei Fu Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing 100101China Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyCenter for Excellence in Life and PaleoenvironmentChinese Academy of SciencesBeijing 100044China Shanghai Qi Zhi Institute Shanghai 200232China Institute of Archaeology Chinese Academy of Social SciencesBeijing 100710China School of History and Culture Lanzhou UniversityLanzhouGansu 730000China Shaanxi Academy of Archaeology Xi’anShaanxi 710054China School of History and Culture Shanxi UniversityTaiyuanShanxi 030006China xingtai Cultural Relics Administration XingtaiHebei 054000China Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Zoo-archaeological and genetic evidence suggest that pigs were domesticated independently in Central China and Eastern Anatolia along with the development of agricultural communities and ***,the genetic history of domestic pigs,especially in China,has not been fully *** this study,we generate 42 complete mitochondrial DNA sequences from~7500-to 2750-year-old individuals from the Yellow River *** results show that the maternal genetic continuity of East Asian domestic pigs dates back to at least the Early to Middle *** contrast,the Near Eastern ancestry in European domestic pigs saw a near-complete genomic replacement by the European wild *** majority of East Asian domestic pigs share close haplotypes,and the most recent common ancestor of most branches dates back to less than 20,000 years before present,inferred using new substitution rates of whole mitogenomes or combined protein-coding *** major population expansion events of East Asian domestic pigs coincided with changes in climate,widespread adoption of introduced crops,and the development of agrarian *** findings add to our understanding of the maternal genetic composition and help to complete the picture of domestic pig evolutionary history in East Asia.

关键词： Ancient mitogenomes Sus scrofa Pig domestication Genetic history East Asia

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论高适《燕歌行》中的文学地理空间

四川职业技术学院学报 2022年第5期32卷 95-101页

作者：代晓艺陕西师范大学文学院陕西西安710119

《燕歌行》涉及自然地理空间为唐代辽河-燕山-阴山一线,人文地理空间为东北军事战争、蓟北风俗地理和盛唐时代环境。在文本中,各种显性地理空间要素构成行军战斗和征人生活两大空间场景,并作为触媒承载着隐性要素即高适的现实关怀和政... 详细信息

《燕歌行》涉及自然地理空间为唐代辽河-燕山-阴山一线,人文地理空间为东北军事战争、蓟北风俗地理和盛唐时代环境。在文本中,各种显性地理空间要素构成行军战斗和征人生活两大空间场景,并作为触媒承载着隐性要素即高适的现实关怀和政治看法。诗人依托具有边塞地域特征的客观地理空间,结合审美判断和地理价值判断,在叙事的理性框架中熔铸感性思索,完成了作品中的文学地理空间建构,带有强烈个人风格和盛唐时代烙印。

关键词：高适《燕歌行》文学地理空间

保留股骨颈型全髋关节置换术早期临床疗效分析

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国际骨科学杂志 2011年第2期32卷 119-120,123页

作者：周传友贺瑞胡飞刘自立戴勇尚希福安徽医科大学附属省立医院骨二科合肥230001

目的评估保留股骨颈型全髋关节置换术早期临床疗效。方法对12例(14髋)因各种原因行保留股骨颈型人工髋关节置换术患者均采用改良Moore小切口,在头下位置将股骨头截断,保留完整的股骨颈;选择合适的外杯,外翻55°装入,内杯为超高分子聚乙... 详细信息

目的评估保留股骨颈型全髋关节置换术早期临床疗效。方法对12例(14髋)因各种原因行保留股骨颈型人工髋关节置换术患者均采用改良Moore小切口,在头下位置将股骨头截断,保留完整的股骨颈;选择合适的外杯,外翻55°装入,内杯为超高分子聚乙烯,超半径设计保持外翻45°。随访时采用Harris髋关节评分标准进行临床评价,摄X线片了解假体位置、松动情况及异位骨化。结果 1例双髋患者术中截除股骨颈过多,致双侧假体柄远端股骨劈裂骨折,夹板固定后骨折愈合。12例均获随访15～27个月,平均18.4个月。Harris评分由术前平均52分,提高到末次随访时平均91分,差异有统计学意义(P<0.05)。X线片显示髋关节位置良好,假体无松动和下沉。结论保留股骨颈型全髋关节置换术治疗中青年髋关节疾病,保留了更多宿主骨质,利于再次假体翻修,临床疗效良好。

关键词：全髋关节置换股骨颈保留髋关节