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Contemporary Asymmetric Genetic Introgression Between Two Pelophylax Species in Shanghai

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Asian Herpetological Research 2024年第1期15卷 1-11页

作者： xu WEI Wenli LIU Gang WANG Rui MA Meiling HUANG Jiaxin ZHENG Tingwei DONG changqing YUAN Shunqi BO Xiao YUAN Ben LI Shuo MA Qu YUE Youzhong ding Zhenghuan WANG School of Life Sciences East China Normal UniversityShanghai 200241China Shanghai Landscaping and City Appearance Administrative Bureau Shanghai 200041China State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200241China Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration East China Normal UniversityShanghai 200241China Yangtze Delta Estuarine Wetland Ecosystem Observation and Research Station Ministry of Education&Shanghai Science and Technology CommitteeShanghai 202162China

Human disturbances are considered to break reproduction barriers among *** increases in hybridization events have been reported among a large number of taxonomic groups in anthropogenic environments,providing novel insights into species evolution mechanisms and conservation management in the *** Eastern Golden Frog(Pelophylax plancyi)and BlackSpotted Frog(***)are two sympatric anuran species with a long history of mitochondrial genome introgression in highly urbanized continental East ***,there is only limited understanding of the pattern of their contemporary hybridization and factors influencing their interspecific relationship under anthropogenic ***,interspecific hybridization between *** and *** at the population level was investigated in *** except two haplotypes obtained from both species in Shanghai were mixed together,and located in the introgression clade,implying multiple ancient mitochondrial introgression events occurred in the populations of our study *** genetic introgression was detected by microsatellite markers,with 0.7%of *** and 14.6%of *** identified as contemporary admixed *** with the trend of population density,higher genetic diversity of neutral microsatellite loci was found in the more abundant ***;however,variation in mitochondrial(Cyt-b)and nuclear(POMC)genes was higher in relatively rare *** population density of *** and number of water patches within local habitats were significantly positively correlated with both occurrences and proportions of admixed individuals in the populations of *** and *** the prevalent transformation of habitats in urbanized areas,these results imply that a high population density in isolated artificially altered habitats is likely to increase interspecific ***,population monitoring and improveme

关键词： anthropogenic disturbances interspecific hybridization Pelophylax species abundance urban landscape urbanization

Echocardiographic Measurements in normal Chinese Adults(EMINCA)II focusing on left ventricular and left atrial size and function by three-dimensional echocardiography

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Frontiers of Medicine 2024年第4期18卷 649-663页

作者： Yingbin Wang Yu Zhang Guihua Yao Hong Tang Lixin Chen Lixue Yin Tiangang Zhu Jianjun Yuan Wei Han Jun Yang Xianhong Shu Ya Yang Yulin Wei Yanli Guo Weidong Ren Dongmei Gao Guilin Lu Ji Wu Hongning Yin Yuming Mu Jiawei Tian Lijun Yuan Xiaojing Ma Hongyan Dai Yunchuan ding Mingyan ding Qing Zhou Hao Wang Di xu Mei Zhang Yun Zhang State Key Laboratory for Innovation and Transformation of Luobing Theory Key Laboratory of Cardiovascular Remodeling and Function ResearchChinese Ministry of EducationChinese National Health Commission and Chinese Academy of Medical SciencesDepartment of CardiologyQilu Hospital of Shandong UniversityJinan250012China Department of Cardiology Qilu Hospital of Shandong University(Qingdao)Qingdao266000China Department of Ultrasonography West China HospitalSichuan UniversityChengdu610041China Department of Ultrasonography Shenzhen People’s Hospital/The Second Clinical Medical College of Jinan UniversityShenzhen518020China Department of Ultrasonography Electronic Science and Technology University of ChinaThe Affiliated Sichuan Provincial People’s HospitalChengdu610072China Department of Cardiology Peking University People’s HospitalBeijing100044China Department of Ultrasonography Henan Provincial People’s HospitalZhengzhou463599China Department of Cardiology The First Affiliated Hospital of Harbin Medical UniversityHarbin150007China Department of Echocardiology The First Affiliated Hospital of China Medical UniversityShenyang110001China Department of Echocardiology Zhongshan HospitalFudan UniversityShanghai200032China Department of Echocardiology Beijing Anzhen HospitalCapital Medical UniversityBeijing100029China Department of Cardiology Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou510120China Department of Ultrasonography The Southwest Hospital of AMUChongqing400038China Department of Ultrasonography Shengjing Hospital of China Medical UniversityShenyang110136China Department of Ultrasonography China-Japan Union hospital of Jilin UniversityChangchun130033China Department of Ultrasonography First Affiliated HospitalSchool of MedicineShihezi UniversityShihezi832000China Department of Ultrasonography The First Affiliated Hospital of Guangxi Medical UniversityNanning537406China Department of Echocardiology The Second Hospital of Hebei Medical Uni

Current guidelines encourage large studies in a diverse population to establish normal reference ranges for three-dimensional(3D)echocardiography for different ethnic *** study was designed to establish the normal values of 3D-left ventricular(LV)and left atrial(LA)volume and function in a nationwide,population-based cohort of healthy Han Chinese adults.A total of 1117 healthy volunteers aged 18–89 years were enrolled from 2..collaborating laboratories in *** sets of 3D echocardiographic instruments were used,and full-volume echocardiographic images were recorded and transmitted to a core laboratory for image analysis with a vendor-independent off-line ***,866 volunteers(mean age of 48.4 years,402..en)were qualified for final *** parameters exhibited substantial differences between different sex and age groups,even after indexation by body surface *** normal ranges of 3D-LV and 3D-LA volume and function differed from those recommended by the American Society of Echocardiography and the European Association of Cardiovascular Imaging guidelines,presented by the World Alliance Societies of Echocardiography(WASE)study,and from the 2..values in the EMINCA *** normal reference values of 3D echocardiography-derived LV and LA volume and function were established for the first time in healthy Han Chinese *** ranges of 3D-LV and 3D-LA echocardiographic measurements stratified with sex,age,and race should be recommended for clinical applications.

关键词： three-dimensional echocardiography left ventricle left atrium normal reference values Chinese adults

“产业孤岛型”淘宝村演化过程及重构作用——以保定市高家庄村为例

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世界地理研究 2024年第2期33卷 93-107页

作者：齐鹏飞丁疆辉柴旭河北师范大学地理科学学院石家庄050024

电子商务成为乡村发展转型的重要推动力,淘宝村的形成演化及其社会作用受到越来越多的关注。以保定市高家庄村为案例,采取实地调研法,解析“产业孤岛型”淘宝村演化过程及经营模式,阐述电子商务行为对村域空间的多维度重构作用。研究发... 详细信息

电子商务成为乡村发展转型的重要推动力,淘宝村的形成演化及其社会作用受到越来越多的关注。以保定市高家庄村为案例,采取实地调研法,解析“产业孤岛型”淘宝村演化过程及经营模式,阐述电子商务行为对村域空间的多维度重构作用。研究发现:(1)高家庄村从传统农业种植村向专业化淘宝村的转型共经历了四个时期:原始种植+贩卖废旧金属时期、“跑电梯”行业过渡时期、淘宝村爆发式形成时期、淘宝村平稳发展时期;(2..宝村内部主要有四种典型的从业与经营模式:数量多、分布广的“家庭网店模式”、数量少、规模大的“企业经营模式”、由个人经营的“纯贸易网店模式”、仅从事拆解工作的“行业工人模式”;(3)电子商务在空间维度上促进了产居空间渗透融合,改变了村内闲置宅基地和空白用地的使用方式;经济维度上推动了“孤岛式”产业升级发展,加速了农村居民非农化就业创业,促进了区域内其他相关行业的衍生发展;社会维度上改善了农村关系,巩固延伸了从业人员的虚拟交往空间和实际交往空间;(4)高家庄村电子商务实现了从无到有的发展,淘宝村快速成型,但产业基础的限制使得淘宝村虽在村镇尺度上经营现状良好,在县域尺度上的空间扩散却不明显,乡村重构作用较小。

关键词：淘宝村演化过程从业经营模式重构作用高家庄村

Biomimetic asymmetric catalysis

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Science China Chemistry 2023年第6期66卷 1553-1633页

作者： Xiao Xiao Kaini xu Zhong-Hua Gao Zhou-Hao Zhu changqing Ye Baoguo Zhao Sanzhong Luo Song Ye Yong-Gui Zhou Senmiao xu Shou-Fei Zhu Hongli Bao Wei Sun Xiaoming Wang Kuiling ding State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China The Education Ministry Key Laboratory of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materialsand Shanghai Frontiers Science Center of Biomimetic CatalysisShanghai Normal UniversityShanghai 200234China Center of Basic Molecular Science Department of ChemistryTsinghua UniversityBeijing 100084China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and FunctionInstitute of ChemistryChinese Academy of SciencesBeijing 100190China university of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China State Key Laboratory and Institute of Elemento-Organic Chemistry College of ChemistryNankai UniversityTianjin 300071China Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural ChemistryCenter for Excellence in Molecular SynthesisFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China

Enzymes are the core for biological transformations in *** structures and functions have drawn enormous attention from biologists as well as chemists since last *** large demand of bioactive molecules and the pursuit of efficiency and greenness of synthesis have spurred the rapid development of biomimetic chemistry in the past several *** asymmetric catalysis,mimicking the structures and functions of enzymes,has been recognized as one of the most promising synthetic strategies for the synthesis of valuable chiral *** review summarizes the evolution of asymmetric catalysis inspired by aldolases,vitamin B_(1)/B_(6)-dependent enzymes,NAD(P)H,flavin,hydrogenases,heme oxygenases,nonheme oxygenases,and dinuclear/multinuclear metalloenzymes in aspects of biomimetic design,catalyst development and related catalytic *** well-established synthetic approaches originating from biological reactions have demonstrated the unique prowess of biomimetic asymmetric catalysis in bridging the gap between bio-catalysis and chemical synthesis.

关键词： biomimetic catalysis amine catalysis carbene catalysis vitamin Br carbonyl catalysis vitamin Bo NAD(P)H flavin biomimetic oxidation dinuclear/multinuclear metal catalysis asymmetric hydrogenation

Spatial homogenization of soil-surface pollen assemblages improves the reliability of pollen-climate calibration-set

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Science China Earth Sciences 2020年第11期63卷 1758-1766页

作者： Fang TIAN Xianyong CAO Ran ZHANG Qinghai xu Wei ding Xingqi LIU Baolin PAN Jianhui CHEN College of Resource Environment and Tourism Capital Normal UniversityBeijing 100048China Alpine Paleoecology and Human Adaptation Group(ALPHA) Key Laboratory of Alpine EcologyInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China CAS Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100101China College of Resources and Environment Sciences Hebei Normal UniversityShijiazhuang 050024China Institute of Geological Sciences PalaeontologyFree University of BerlinBerlin 12249Germany Key Laboratory of Western China's Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China

To make a reliable reconstruction of past climate from soil-surface modern pollen,it is necessary to reduce the sources of *** this paper,pollen percentages of the sub-continental scale modern pollen-climate dataset from China and Mongolia(with 68%soil-surface samples)are homogenized at various spatial scales.A tailored calibration-set is then applied to lake sediment-surface pollen assemblages from north-central China to evaluate their predictive *** indicate that spatial homogenization of modern pollen percentages can increase the proportion of inertia explained by climatic variables in CCA and improve the model performance of leave-one-out cross-validation using ***-surface pollen assemblages can thus be employed into a calibration-set for reliable climate estimation and they perform better when the calibration-set has been locally ***-scale(e.g.,radii 2..,or 10 km)homogenization reduces the local noise in soil-surface pollen assemblages and improves the cross-validated performance,while broader scale homogenization(more than 2..km radius)blurs the pollen-climate *** sediment-surface pollen assemblages from close to the shore could contain pollen grains transported by rivers or from the shore vegetation and thus fail to represent regional climate well like the assemblages from the central part and deep-water area of lake.

关键词： North-central China Soil-surface pollen Climate reconstruction WA-PLS

Surface pollen assemblages of human-disturbed vegetation and their relationship with vegetation and climate in Northeast China

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Chinese Science Bulletin 2012年第5期57卷 535-547页

作者： LI ManYue LI YueCong xu QingHai PANG RuiMing ding Wei ZHANG ShengRui HE ZhiGuo College of Resources and Environment and hebei Key Laboratory of Environmental Change and Ecological Construction Hebei Normal UniversityShijiazhuang 050024China

Pollen assemblages of 53 surface pollen samples from farmlands and wastelands in Northeast China were analyzed. Tree pollen percentages were usually higher than 30%, with Pinus (2..9%), Quercus (0.9%), Betula (0.9%) and Populus (0.7%) as the major types, and herb pollen percentages were usually higher than 50%, with weedy Poaceae (8.7%), Chenopodiaceae (7.1%), Artemisia (1.9%) and Compositae (3.5%) as the major taxa. Thus, the pollen assemblages were consistent with the regional vegetation compositions. However, there were differences in pollen assemblages among regions, especially among different geomorphological units. For example, in the mountains, there were more types of tree pollen and higher total percentages (average 42.. than in other areas, while cereal pollen percentages were lowest (11.2... In the hills and high plains, herbs made up more than 60% of the pollens, with cereals (average 53.6%) the dominant type. In the low plains, pollen types were similar to those in the hills and high plains, but total pollen concentrations and the proportion of Concentricystes were much higher, while cereal pollen percentages were slightly lower (average 41.6%). Pollen assemblages in different land use types also differed. For example, in farmland, cereal pollen percentages were more than 40% and Chenopodiaceae was usually less than 2..%, while in wasteland, weedy Poaceae was usually less than 10% and Chenopodiaceae was usually higher than 2... Total pollen concentrations in farmland (average 3909 grains/g) were much lower than in wasteland (average 15074 grains/g). Redundancy analysis revealed that pollen assemblages were significantly negatively correlated with mean annual temperature (-0.73) and July mean temperature (-0.81) and significantly positively correlated with mean annual precipitation (0.48), indicating that pollen assemblages in the artificial or human-disturbed vegetation reflect regional climate well. Comparison of pollen assemblages in different areas o

关键词：中国东北地区花粉组合植被组成区域气候人为干扰年平均气温禾本科杂草花粉浓度

Influence of plant coverage and environmental variables on pollen productivities:evidence from northern China

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Frontiers of Earth Science 2020年第4期14卷 789-802页

作者： Kaixiu Zhang Wen Qin Fang Tian Xianyong Cao Yuecong Li Jule Xiao Wei ding Ulrike Herzschuh Qinghai xu College of Resource Environment and Tourism Beijing Key Laboratory of Resource Environment and GISCapital Normal UniversityBeijing100048China Key Laboratory of Alpine Ecology Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing100101China Alpine Paleoecology and Human Adaptation Group(ALPHA) Key Laboratory of Alpine EcologyInstitute of Tibetan Plateau ResearchChinese Academy of Sciences(CAS)Beijing100101China College of Resources and Environment Sciences Hebei Normal UniversityShijiazhuang050024China Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China Institute of Geological Sciences PalaeontologyFree University of BerlinBerlin12249Germany Alfred Wegener Institute Helmholtz Center for Polarand Marine Research Research Unit PotsdamPotsdam14473Germany Institute of Earth and Environmental Sciences University of PotsdamPotsdam14476Germany

Pollen productivity is a critical parameter in the interpretation of pollen-vegetation relationships,and in the quantitative reconstructions of past vegetation from fossil pollen ***-year monitoring records were collected for 143 pollen traps in various parts of northern China,together with modern vegetation *** Pollen Productivity Estimates(APPE)were calculated for 11 taxa using the ratio of pollen influx to plant coverage at each applicable sampling site,in which the plants of the target taxon were *** Pollen Productivity Estimates(RPPE)were calculated for the 11 taxa(taking Poaceae as the reference taxon)at those sites in which each taxon occurred together with *** and Chenopodiaceae were found to have the highest RPPEs and the largest RPPEs ranges,while Pinus and Quercus also had higher RPPEs than Poaceae;Abies,Betula,Larix,Picea and Cyperaceae had relatively low *** in RPPE between different areas may be explained by variations in climatic conditions,plant coverage and land use practices which might influence plant growing *** effect that variations in pollen productivity can have on vegetation reconstructions was demonstrated by applying these distinct RPPEs to reconstructions of Holocene vegetation in the Lake Daihai area(northern China),such as a large range of RPPE produces a large range of plant *** in RPPEs within a single taxon,related to vegetation coverage and climatic conditions,therefore need to be considered in future vegetation reconstructions.

关键词： pollen influx pollen productivity vegetation reconstruction REVEALS model northern China

Pollen assemblages of cultivated vegetation in central and southern hebei Province

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Journal of Geographical Sciences 2011年第3期21卷 549-560页

作者： PANG Ruiming College of Resources and Environment of hebei normal university Shijiazhuang 050016 China Key Laboratory of Environmental Change and Ecological Development of hebei Province Shijiazhuang 050016 China

The study on 82..urface soil pollen samples from different types of cultivated vegetations in central and southern parts of hebei Province indicates that the pollen assem- blages from farmlands in the plain have not only their own plant types, but also the pollen components from the nearby mountains. Arboreal pollen percentages and concentrations （dominated by Pinus） from farmlands in mountain area are higher than those in the plain, and it reduces gradually with the increasing distance away from the mountains. Taking Pinus pollen in Taihang Mountains as an example, its content is 2..-30%, 10%-2.., 2..-30% and below 16% respectively for the samples from the area of 0-50, 50-100, 100-150 and more than 150 km away from the east Taihang Mountains. The increase of Pinus pollen proportion in the central plain is probably related to the fohn effect. The spatial variation of AP from mountains to the plain in hebei Province may be similar to the forests clearance by human activities in the early historical period. Shrubby pollen proportion is small both in mountains and in the plain, but their major components are different. Elaeagnaceae, Corylus, Ostryopsis and Oleaceae are common in mountain areas, while there are relatively high contents of Rosaceae and Vitaceae in the plain. Herbs content in the plain （about 60%） is 15% higher than that in mountains, among which the Cereals and Cruciferae pollen percentages are 5% and 2..higher respectively. Artemisia pollen percentage in the plain is lower than that in mountains. Since the human activities are weaker in mountains compared with that in the plain, the general trend is that Chenopodiaceae pollen increases from mountains to the plain gradually, reflecting the raising intensity of human activities. The fern spores of Selaginella sinensis in mountains are higher than that in the plain, but it still reaches to about 7% in the plain. The fern spores of Selaginella sinensis are not prone to be spread by wind, indicating that th

关键词： farmlands human activity pollen assemblages Taihang Mountain plain hebei Province

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人口流动与网络求职耦合关联分析

世界地理研究 2017年第2期26卷 169-176页

作者：许静平丁疆辉河北师范大学资源与环境科学学院石家庄050024

随着互联网的普及,网络求职兴起并迅速发展,同时期中国人口也在进行大规模的流动。在建立耦合系统评价指标体系的基础上,运用灰色关联分析法,构建人口流动与网络求职交互作用的关联度模型和耦合度模型,分析人口流动与网络求职耦合的主... 详细信息

随着互联网的普及,网络求职兴起并迅速发展,同时期中国人口也在进行大规模的流动。在建立耦合系统评价指标体系的基础上,运用灰色关联分析法,构建人口流动与网络求职交互作用的关联度模型和耦合度模型,分析人口流动与网络求职耦合的主要因素及成因,并从时空角度对其耦合度的演变规律进行分析。结果发现:(1)系统要素耦合的机制复杂,且关系密切;(2..合度分布基本符合东、中西的空间分异规律,根据耦合度大小,大致把我国省区划分为和谐、磨合和拮抗3个类型区;(3)耦合度时序变动表现出一定的阶段性,在2..5年以前处于低度耦合阶段,2..5年以后二者关联逐步密切,2..0年达到中度耦合程度,2..5年耦合作用更加明显。

关键词：人口流动网络求职耦合关联