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| 1 | Aerosol and boundary-layer interactions and impact on air quality显示文摘Air quality is concerned with pollutants in both the gas phase and solid or liquid phases. The latter are referred to as aerosols, which are multifaceted agents affecting air quality, weather and climate through many mechanisms. Unlike gas pollutants, aerosols interact strongly with meteorological variables with the strongest interactions taking place in the planetary boundary layer(PBL). The PBL hosting the bulk of aerosols in the lower atmosphere is affected by aerosol radiative effects. Both aerosol scattering and absorption reduce the amount of solar radiation reaching the ground and thus reduce the sensible heat fluxes that drive the diurnal evolution of the PBL. Moreover, aerosols can increase atmospheric stability by inducing a temperature inversion as a result of both scattering and absorption of solar radiation, which suppresses dispersion of pollutants and leads to further increases in aerosol concentration in the lower PBL.Such positive feedback is especially strong during severe pollution events. Knowledge of the PBL is thus crucial for understanding the interactions between air pollution and meteorology. A key question is how the diurnal evolution of the PBL interacts with aerosols, especially in vertical directions, and affects air quality.We review the major advances in aerosol measurements, PBL processes and their interactions with each other through complex feedback mechanisms, and highlight the priorities for future studies. | Zhanqing Li Jianping Guo Aijun Ding Hong Liao Jianjun Liu Yele Sun Tijian Wang Huiwen Xue Hongsheng Zhang Bin Zhu | 2017 | National Science Review2017,4,6: | 37 |
| 2 | Phylogenetic structure and phylogenetic diversity of angiosperm assemblages in forests along an elevational gradient in Changbaishan,显示文摘Aims Understanding what drives the variation in species composition and diversity among local communities can provide insights into the mechanisms of community assembly.Because ecological traits are often thought to be phylogenetically conserved,there should be patterns in phylogenetic structure and phylogenetic diversity in local communities along ecological gradients.We investigate potential patterns in angiosperm assemblages along an elevational gradient with a steep ecological gradient in Changbaishan,China.Methods We used 13 angiosperm assemblages in forest plots(32×32 m)distributed along an elevational gradient from 720 to 1900 m above sea level.We used Faith’s phylogenetic diversity metric to quantify the phylogenetic alpha diversity of each forest plot,used the net relatedness index to quantify the degree of phylogenetic relatedness among angiosperm species within each forest plot and used a phylogenetic dissimilarity index to quantify phylogenetic beta diversity among forest plots.We related the measures of phylogenetic structure and phylogenetic diversity to environmental(climatic and edaphic)factors.Important Findings Our study showed that angiosperm assemblages tended to be more phylogenetically clustered at higher elevations in Changbaishan.This finding is consistent with the prediction of the phylogenetic niche conservatism hypothesis,which highlights the role of niche constraints in governing the phylogenetic structure of assemblages.Our study also showed that woody assemblages differ from herbaceous assemblages in several major aspects.First,phylogenetic clustering dominated in woody assemblages,whereas phylogenetic overdispersion dominated in herbaceous assemblages;second,patterns in phylogenetic relatedness along the elevational and temperature gradients of Changbaishan were stronger for woody assemblages than for herbaceous assemblages;third,environmental variables explained much more variations in phylogenetic relatedness,phylogenetic alpha diversity and phylogenetic beta diversity for woody assemblages than for herbaceous assemblages. | Hong Qian Zhanqing Hao Jian Zhang | 2014 | Journal of Plant Ecology2014,7,2: | 33 |
| 3 | Advances in studying interactions between aerosols and monsoon in China显示文摘Scientific issues relevant to interactions between aerosols and the Asian monsoon climate were discussed and evaluated at the 33 rd 'Forum of Science and Technology Frontiers' sponsored by the Department of Earth Sciences at the Chinese Academy of Sciences. Major results are summarized in this paper. The East Asian monsoon directly affects aerosol transport and provides a favorable background circulation for the occurrence and development of persistent fog-haze weather. Spatial features of aerosol transport and distribution are also influenced by the East Asian monsoon on seasonal, inter-annual, and decadal scales. High moisture levels in monsoon regions also affect aerosol optical and radiative properties. Observation analyses indicate that cloud physical properties and precipitation are significantly affected by aerosols in China with aerosols likely suppressing local light and moderate rainfall, and intensifying heavy rainfall in southeast coastal regions. However, the detailed mechanisms behind this pattern still need further exploration. The decadal variation in the East Asian monsoon strongly affects aerosol concentrations and their spatial patterns. The weakening monsoon circulation in recent decades has likely helped to increase regional aerosol concentrations. The substantial increase in Chinese air pollutants has likely decreased the temperature difference between land and sea, which favors intensification of the weakening monsoon circulation. Constructive suggestions regarding future studies on aerosols and monsoons were proposed in this forum and key uncertain issues were also discussed. | WU GuoXiong LI ZhanQing FU CongBin ZHANG XiaoYe ZHANG RenYi ZHANG RenHe ZHOU TianJun LI JianPing LI JianDong ZHOU DeGang WU Liang ZHOU LianTong HE Bian HUANG RongHui | 2016 | Science China Earth Sciences2016,59,1: | 16 |
| 4 | The LA-ICP-MS zircons U-Pb ages and geochemistry of the Baihua basic igneous complexes in Tianshui area of West Qinling显示文摘Baihua meta-igneous complex consists mainly of pyroxenite-gabbro(diorite)-diorite-quartz diorite. They form a complete comagmatic evolutionary series. The geochemical characteristics of basic-interme- diate basic igneous rocks indicate that they belong to a tholeiite suite. The REE distribution pattern is nearly flat type and LREE is slightly enriched type, and their primitive mantle-normalized and MORB-normalized trace element spider diagrams are generally similar; the LIL elements (LILE) Cs, Ba, Sr, Th and U are enriched, but Rb, K and the HFSEs Nb, P, Zr, Sm, Ti and Y are relatively depleted. All these show comagmatic evolution and origin characteristics. The tectonics environment discrimination of trace element reveals that these igneous complexes formed in an island-arc setting. The LA-ICP-MS single-zircons U-Pb age of Baihua basic igneous complex is 434.6±1.5 Ma (MSWD = 1.3), which proves that the formation time of the island-arc type magmatite in the northern zone of West Qinling is Late Ordovician or Early Silurian, also reveals that the timing of subduction of paleo-ocean basin represented by the Guanzizhen ophiolite and resulting island-arc-type magmatic activities is probably Middle-Late Ordovician to Early Silurian. | PEI XianZhi DING SaPing ZHANG GuoWei LIU HuiBin LI ZuoChen LI GaoYang LIU ZhanQing MENG Yong | 2007 | Science China Earth Sciences2007,50,z2: | 15 |
| 5 | Lévy noise induced stochastic resonance in an FHN model显示文摘This paper aims to investigate the stochastic resonance(SR) in an Fitz Hugh-Nagumo(FHN) model with an additive Lévy noise numerically. The non-Gaussian Lévy noise is a kind of general random noise which is different from the usual Gaussian noise, and it has small fluctuations with the unpredictable jumps to describe the random fluctuations in an FHN model. SR is determined by the signal-to-noise ratio(SNR), and the numerical simulation results show the occurrence of the SR phenomena in the given FHN system. The influence of various parameters of the Lévy noise and the FHN model on the SR will be examined, and some mechanisms of the Lévy noise-induced SR are presented which are different from those of the Gaussian noise. | WANG ZhanQing XU Yong YANG Hui | 2016 | Science China(Technological Sciences)2016,59,3: | 13 |
| 6 | Design and development of an oral remdesivir derivative W116 against SARS-CoV-2显示文摘Dear Editor,Since the declaration of COVID-19 as a global pandemic on March 11,2020,this pandemic has been circulating for 17 months throughout the world,leading to more than 200 million infections and nearly 4.4 million deaths as of August 15,2021.The pathogen of COVID-19 is a novel coronavirus named SARS-CoV-2,which shares-79%genome sequence identity with SARS-CoV.1 At the early stage of the COVID-19 outbreak,5ARS-CoV-2 caused great panic in the hardest-hit areas due to its high transmissibility and pathogenicity.To fight the COVID-19 crisis,drug repurposing was immediately pursued in order to find potential therapeutics. | Yuanchao Xie Wanchao Yin Yumin Zhang Weijuan Shang Zhen Wang Xiaodong Luan Guanghui Tian Haji A.Aisa Yechun Xu Gengfu Xiao Jia Li Hualiang Jiang Shuyang Zhanq Leike Zhang H.Eric Xu Jingshan Shen | 2021 | Cell Research2021,31,11: | 12 |
| 7 | Low-Level Temperature Inversions and Their Effect on Aerosol Condensation Nuclei Concentrations under Different Large-Scale Synoptic Circulations显示文摘Knowledge of the statistical characteristics of inversions and their effects on aerosols under different large-scale synoptic circulations is important for studying and modeling the diffusion of pollutants in the boundary layer. Based on results generated using the self-organizing map(SOM) weather classification method, this study compares the statistical characteristics of surface-based inversions(SBIs) and elevated inversions(EIs), and quantitatively evaluates the effect of SBIs on aerosol condensation nuclei(CN) concentrations and the relationship between temperature gradients and aerosols for six prevailing synoptic patterns over the the Southern Great Plains(SGP) site during 2001–10. Large-scale synoptic patterns strongly influence the statistical characteristics of inversions and the accumulation of aerosols in the low-level atmosphere. The activity,frequency, intensity, and vertical distribution of inversions are significantly different among these synoptic patterns. The vertical distribution of inversions varies diurnally and is significantly different among the different synoptic patterns. Anticyclonic patterns affect the accumulation of aerosols near the ground more strongly than cyclonic patterns. Mean aerosol CN concentrations increase during SBIs compared to no inversion cases by 16.1%, 22.6%, 24.5%, 58.7%, 29.8% and 23.7% for the six synoptic patterns. This study confirms that there is a positive correlation between temperature gradients and aerosol CN concentrations near the ground at night under similar large-scale synoptic patterns. The relationship is different for different synoptic patterns and can be described by linear functions. These findings suggest that large-scale synoptic patterns change the static stability of the atmosphere and inversions in the lower atmosphere, thereby influencing the diffusion of aerosols near the ground. | LI Jun CHEN Hongbin Zhanqing LI WANG Pucai Maureen CRIBB FAN Xuehua | 2015 | Advances in Atmospheric Sciences2015,32,7: | 12 |
| 8 | 香河地区光合有效辐射观测分析研究显示文摘利用中国科学院大气物理研究所香河大气综合观测实验站(39°47′N,116°57′E)2004年10月至2005年12月共15个月的太阳辐射观测资料,分析了该地区光合有效辐射与太阳总辐射比值的(PAR/Rs)日变化和季节变化特征,得出月平均PAR/Rs值变化范围在1.808~2.048μE·J^-1之间,最大值出现在夏季,最小值出现在冬季,年平均值为1.948μE·J^-1。提出了一个利用太阳总辐射观测值计算光合有效辐射瞬时值的参数化算式,用该算式计算得到的PAR与实际观测值的均方根误差为19.28μE·m^-2·s^-1,有96%的计算值与观测值偏差在±10%以内。比较了香河地区与太湖地区、额济纳地区光合有效辐射瞬时最大值、小时累积最大值及日累积最大值的差异。 | 余予 陈洪滨 夏祥鳌 王普才 Zhanqing Li | 2008 | 高原气象2008,27,5: | 9 |
| 9 | Failure modes of coal containing gas and mechanism of gas outbursts显示文摘In order to explain the mechanism for gas outburst, the process of evolving fractures in coal seams is described using system dynamics with variable boundaries. We discuss the failure modes of coal containing gas and then established the flow rules after failure. The condition under which states of deformation convert is presented and the manner in which these convert is proposed. In the end, the process of gas outbursts is explained in detail. It shows that a gas outburst is a process in which the boundaries of coal seams are variable because of coal failure. If the fractures are not connected or even closed owing to coal/rock stress, fractured zones will retain a certain level of carrying capacity because of the self-sealing gas pressure. When the accumulation of gas energy reaches its limit, coal seams will become unstable and gas outbursts take place. | HUANG Wei CHEN Zhanqing YUE Jianhua ZHANG Yu YANG Min | 2010 | Mining Science and Technology2010,20,4: | 9 |
| 10 | Plasma membrane proteome analysis of the early effect of alcohol on liver: implications for alcoholic liver disease显示文摘在人,酒精的在消费上能导致严肃的肝疾病。在肝疾病上检验酒精的早效果,老鼠被给足够的乙醇开发肝肝硬化。在纤维变性的发作前的老鼠在这个工作被学习。肝的血浆膜(下午) 被提取由两次蔗糖密度坡度 centrifugation。从对待乙醇的老鼠和控制的下午的 proteome 侧面为相对、绝对的 quantitation (iTRAQ ) 用二维的胶化电气泳动(2-DE ) 和等压的标签被分析技术。乙醇处理改变了 15 不同的肝蛋白质的数量:他们中的 10 个被 2-DE 检测并且 5 由 iTRAQ。角质素 8 被两个方法检测。这些差别的基因本体论分析检测了显示的蛋白质他们的那个大多数涉及象有约束力的活动那样的重要房间函数(包括离子, DNA, ATP 绑定,等等) ,房间结构,或酶活动。在这些之中, annexin A2,角质素 8,和角质素 18 进一步用西方的污点分析被验证, annexin A2 被 immunohistochemistry 验证。我们的结果建议酒精有潜力由在 PM 改变几相关蛋白质的表示层次影响房间结构,粘附和酶活动。就我们的知识而言,这是第一次在肝下午 proteome 上学习酒精的效果,它可能对理解导致白酒的肝疾病的可能的机制有用。 | Lijun Zhang Xiaofang Jia Yanling Feng Xia Peng Zhiyong Zhang Wenjiang Zhou Zhanqing Zhang Fang Ma Xiaohui Liu Ye Zheng Pengyuan Yang Zhenghong Yuan | 2011 | Acta Biochimica et Biophysica Sinica2011,43,1: | 8 |
| 11 | Validation of MODIS aerosol products by CSHNET over China显示文摘The Chinese Sun Hazemeter Network (CSHNET) provides the necessary ground-based observation to validate and assess the applicability of MODIS aerosol optical depth (AOD) products over different ecological and geographic regions in China for the first time. The validation results show that the comprehensive utilization ratio and applicability of MODIS products varied very much over different regions and seasons from August 2004 to July 2005. On the Tibetan Plateau, the comprehensive utili- zation ratio of MODIS data was low: MODIS products only accounted for 16% of the ground-based observation; on average, 31% to 45% of MODIS products fell within the retrieval errors issued by NASA. A similar result was found in northern desert areas with the ratio of MODIS to observation ranging from 15% to 55%, with 7% to 39% of MODIS products within errors. In the remote northeast corner of China, low ratios of MODIS to observation were also found ranging from 14% to 46%, with 49% to 69% of MODIS within errors. The forested sites exhibited moderate ratios of MODIS to observation ranging from 46% to 65%, with 30% to 59% of MODIS within errors. This was similar to numbers observed at sites along eastern seashore of China and inland urban sites with the ratio of MODIS to observation between 63% to 75%, with 25% to 67% of MODIS within errors for sites along eastern seashore of China and 43% to 78%, with 35% to 75% of MODIS within errors for inland urban sites. The ratio of MODIS to observation over agricultural areas ranged from 61% to 89%; 59%-88% of MODIS fell within the retrieval errors. At homogeneous and well vegetated areas, the comprehensive utilization ratio of MODIS products was over 80% and above 70% of MODIS products fell within the retrieval errors in growing season. | WANG LiLi XIN JinYuan WANG YueSi LI ZhanQing WANG PuCai LIU GuangRen WEN TianXue | 2007 | Chinese Science Bulletin2007,52,12: | 7 |
| 12 | Planning and analysis of the demonstration project of the MVDC distribution network in Zhuhai显示文摘The DC distribution system is an important development direction of the distribution system,which can improve the reliability and the quality of the power supply,and support the new energy,the energy storage,the electric vehicles,and the flexible access of AC and DC loads to grid.To realize the demonstration application of the DC distribution technology,China's first demonstration project of the medium voltage DC distribution network will be built in Zhuhai,Guangdong Province to support the construction of the city energy internet.First,this paper analyzes the demand of the DC distribution network project,and puts forward the construction content and construction target.Then,it designs and analyzes the electrical connection mode,system operation mode,and startup and shutdown mode of the DC distribution network,and proposes the overall project construction plan.Finally,it conducts the specific project design and analysis,which mainly in elude the selection of equipment such as inverters,DC transformers and DC circuit breakers,the design and analysis of the DC control and protection system,the design and analysis of the overvoltage protection and the configuration scheme of the lightning arrester,and analysis of the system transient characteristics.The design and analysis of the engineering program is a combination of China's distribution network engineering practice and technical characteristics,which lays a solid foundation for the advancement of the DC power distribution technology in China,and has reference value and demonstration effect for the design and construction of other projects. | Lu QU Zhanqing YU Qiang SONG Zhichang YUAN Biao ZHAO Dawei YAO Jianfu CHEN Yao LIU Rong ZENG | 2019 | Frontiers in Energy2019,13,1: | 7 |
| 13 | Temporal and Spatial Variations of Global Deep Cloud Systems Based on CloudSat and CALIPSO Satellite Observations显示文摘The spatial and temporal global distribution of deep clouds was analyzed using a four-year dataset(2007–10) based on observations from CloudSat and CALIPSO. Results showed that in the Northern Hemisphere, the number of deep cloud systems(DCS) reached a maximum in summer and a minimum in winter. Seasonal variations in the number of DCS varied zonally in the Southern Hemisphere. DCS occurred most frequently over central Africa, the northern parts of South America and Australia, and Tibet. The mean cloud-top height of deep cloud cores(TDCC) decreased toward high latitudes in all seasons. DCS with the highest TDCC and deepest cores occurred over east and south Asian monsoon regions, west-central Africa and northern South America. The width of DCS(WDCS) increased toward high latitudes in all seasons. In general,DCS were more developed in the horizontal than in the vertical direction over high latitudes and vice versa over lower latitudes. Findings from this study show that different mechanisms are behind the development of DCS at different latitudes.Most DCS at low latitudes are deep convective clouds which are highly developed in the vertical direction but cover a relatively small area in the horizontal direction; these DCS have the highest TDCC and smallest WDCS. The DCS at midlatitudes are more likely to be caused by cyclones, so they have less vertical development than DCS at low latitudes. DCS at high latitudes are mainly generated by large frontal systems, so they have the largest WDCS and the smallest TDCC. | PENG Jie ZHANG Hua Zhanqing LI | 2014 | Advances in Atmospheric Sciences2014,31,3: | 7 |
| 14 | Survey of recent progress on lightning and lightning protection research显示文摘Lightning and lightning induced effects have significant influence on many aspects affecting the public, whichmakes the research of lightning and lightning protection very important. However, due to the strong randomness andcomplex discharge mechanisms of lightning, the understanding of lightning is still far from satisfactory. On the basis ofthe International Conference on Lightning Protection 2014, this study gives a review of recent progress on lightningand lightning protection research covering the following aspects: lightning locating and observation, lightning physics,lightning electromagnetic transients, and lightning protection for various systems. The goals of this study are to givereaders an overall introduction to the recent progress in lightning and lightning protection research, and to motivatethem to conduct further studies to address the unsolved problems in lightning-related research. | Rong Zeng Chijie Zhuang Xuan Zhou She Chen Zezhong Wang Zhanqing Yu Jinliang He | 2016 | High Voltage2016,1,1: | 6 |
| 15 | Development and prospect of direct‐current circuit breaker in China显示文摘The direct‐current circuit breaker(DCCB)is the most ideal choice for DC fault isolation in DC grids.Despite a late start,China's research and development on the DCCB have made outstanding achievements.This article provides a brief glance of current China's DCCB development status.It begins by sorting out the technical route according to the topology of DCCB.Then it systematically summarises both mechanical and hybrid DCCBs with focussing on the aspects of topology structure and principle,key technology and characteristics,prototype development and application.It is apparent that Chinese scientists and engineers confronted the worldwide problem of large capacity DC breaking,and put forward a comprehensive solution which consists of an innovative topology structure based on coupled negative voltage circuit,breaking throughs on the key technologies such as highly controllable and reliable fault current commutation,millisecond‐level ultra‐fast and efficient electromagnetic repulsion mechanism,high tolerance and high stability power electronic switch,low residual voltage and fast response energy consumption device,etc.The article states that the world's first set of hybrid high‐voltage(HV)DCCB,and the first set of mechanical HV DCCB have been developed.These DCCBs will soon be deployed to the DC grids which have the highest voltage levels therefore require the strongest breaking capacity.These achievements are leading the world in the development and application of DCCB.The article also discusses the overall development trends of DCCB in the areas of new topologies,key techno-logical breakthroughs and application scenarios,etc.These discussions serve as references for DCCB's future technological advancement and its ever‐expanding applications. | Weijiang Chen Rong Zeng Junjia He Yi Wu Xiaoguang Wei Taixun Fang Zhanqing Yu Zhao Yuan Yifei Wu Wandi Zhou Bing Yang Lu Qu | 2021 | High Voltage2021,6,1: | 6 |
| 16 | Vertical distribution of aerosol optical properties based on aircraft measurements over the Loess Plateau in China显示文摘Vertical distributions of aerosol optical properties based on aircraft measurements over the Loess Plateau were measured for the first time during a summertime aircraft campaign, 2013 in Shanxi, China. Data from four flights were analyzed. The vertical distributions of aerosol optical properties including aerosol scattering coefficients(σsc), absorption coefficients(σab),Angstr?m exponent(α), single scattering albedo(ω), backscattering ratio(βsc), aerosol mass scattering proficiency(Q sc) and aerosol surface scattering proficiency(Q sc′) were obtained. The mean statistical values of σsc were 77.45 Mm-1(at 450 nm), 50.72 Mm-1(at 550 nm), and32.02 Mm-1(at 700 nm). The mean value of σab was 7.62 Mm-1(at 550 nm). The mean values ofα, βsc and ω were 1.93, 0.15, and 0.91, respectively. Aerosol concentration decreased with altitude. Most effective diameters(ED) of aerosols were less than 0.8 μm. The vertical profiles of σsc,, α, βsc, Q sc and Q sc′ showed that the aerosol scattering properties at lower levels contributed the most to the total aerosol radiative forcing. Both α and βsc had relatively large values, suggesting that most aerosols in the observational region were small particles. The mean values of σsc, α, βsc, Q sc, Q sc′, σab and ω at different height ranges showed that most of the parameters decreased with altitude. The forty-eight hour backward trajectories of air masses during the observation days indicated that the majority of aerosols in the lower level contributed the most to the total aerosol loading, and most of these particles originated from local or regional pollution emissions. | Junxia Li Xingang Liu Liang Yuan Yan Yin Zhanqing Li Peiren Li Gang Ren Lijun Jin Runjun Li Zipeng Dong Yiyu Li Junmei Yang | 2015 | Journal of Environmental Sciences2015,27,8: | 6 |
| 17 | Local-scale drivers of multi-stemmed tree formation in Acer,in a temperate forest of Northeast China显示文摘Acer is an important genus in temperate forests in Northeast China.Individual Acer trees can re-sprout from the root collar and can occur in clonal units,either as a single-stemmed or multi-stemmed tree.However,the factors that induce multiple-stems in Acer remain only partly understood.In this study,we determined the relative importance of abiotic and biotic variables in driving the production of multiple-stems in this genus,within a 25-hm^2experimental forest dynamics plot in Changbaishan(CBS)temperate forest.We used generalized linear mixed models to perform analyses at two levels(community-and specieslevel).We found seven Acer species in total within the plot,where they form a key part of the forest community.Our results show that abiotic factors play a more important role in producing multi-stemmed trees at the community level in CBS.At the species level,the relative importance of different factors varied among species.Shrub species tended to have a higher frequency of multi-stemmed trees under stressful conditions,whereas tree species tended to have more multi-stemmed trees in more suitable habitat.Our results indicate that the relative importance of different factors influencing the frequency of multi-stemmed individuals in Acer differs at the community and species level in the temperate forest. | Ji Ye Zhanqing Hao Xugao Wang Xuejiao Bai Dingliang Xing Zuoqiang Yuan | 2014 | Chinese Science Bulletin2014,59,3: | 6 |
| 18 | Geochronology, Geochemistry and Tectonic Setting of the Bairiqiete Granodiorite Intrusion(Rock Mass) from the Buqingshan Tectonic Mélange Belt in the Southern Margin of East Kunlun显示文摘This study focuses on the zircon U–Pb geochronology and geochemistry of the Bairiqiete granodiorite intrusion(rock mass) from the Buqingshan tectonic mélange belt in the southern margin of East Kunlun. The results show that the zircons are characterized by internal oscillatory zoning and high Th/U(0.14–0.80), indicative of an igneous origin. LA–ICP–MS U–Pb dating of zircons from the Bairiqiete granodiorite yielded an age of 439.0 ± 1.9 Ma(MSWD = 0.34), implying that the Bairiqiete granodiorite formed in the early Silurian. Geochemical analyses show that the rocks are medium-K calc-alkaline, relatively high in Al2O3(14.57–18.34 wt%) and metaluminous to weakly peraluminous. Rare-earth elements have low concentrations(45.49–168.31 ppm) and incline rightward with weak negative to weak positive Eu anomalies(δEu = 0.64–1.34). Trace-element geochemistry is characterized by negative anomalies of Nb, Ta, Zr, Hf and Ti and positive anomalies of Rb, Th and Ba. Moreover, the rocks have similar geochemical features with adakites. The Bairiqiete granodiorite appears to have a continental crust source and formed in a subduction-related island-arc setting. The Bairiqiete granodiorite was formed due to partial melting of the lower crust and suggests subduction in the Buqingshan area of the Proto-Tethys Ocean. | LI Zuochen PEI Xianzhi LI Ruibao PEI Lei LIU Chengjun CHEN Youxin LIU Zhanqing CHEN Guochao XU Tong YANG Jie WEI Bo | 2014 | Acta Geologica Sinica(English Edition)2014,88,2: | 5 |
| 19 | Influence of Meteorological Parameters on Electromagnetic Environment of UHVDC Transmission Line Under High Altitude Condition显示文摘 | LIU Lei LI Min LI Ruihai YU Zhanqing LIUZhihong LIU Xiangshi | 2012 | 高电压技术2012,38,12: | 4 |
| 20 | Influence Factors of Audible Noise Caused by Corona Discharge on UHVDC Transmission Lines Under High Altitude Condition显示文摘 | TIAN Feng YU Zhanqing ZENG Rong LIU Lei LI Min LI Ruihai | 2012 | 高电压技术2012,38,12: | 4 |