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Cenozoic volcanism and lithospheric tectonic evolution in Qiangtang area, northern Qinghai-Tibet Plateau

Science china Earth Sciences 2005年第7期48卷 1011-1024页

作者： chi xiaoguo li cai jin wei College of Earth Sciences Jilin University Changchun 130061 China College of Earth Sciences Jilin University Changchun 130061 China College of Earth Sciences Jilin University Changchun 130061 China

Following the collision between the Indian and Eurasian plates, the Cenozoic vol- canic activities are rather frequent in the Qiangtang area of northern Qinghai-Tibet Plateau. They can be divided into four series: alkaline basalt series, high-K calc-alkaline series, shoshonitic series and peralkaline potassic-ultrapotassic series. Geochemical data suggest that the magma sources of Cenozoic volcanic rocks have transferred from spinel lherzolite mantle in the early stage to garnet peridotite enriched mantle (EM2) in the later stage. The high Mg# number and extremely high Cr-Ni-Co abundance of high-K calc-alkaline and shoshonitic series andesites in the Qiangtang area indicate that the primary magma might be derived from subduction of conti- nent lithosphere from the Lhasa block. Incompatible element ratios of La/Rb, Zr/Rb, Rb/Nb, K/Nb, Pb/La and K/La of peralkaline potassic-ultrapotassic series lavas in northern Qinghai-Tibet Pla- teau are lower than island arc volcanic rocks and higher than and similar to oceanic island ba- salts. This signature indicates that the primary magma derive from a paleo-mantle wedge inter- fused by fluids derived from asthenosphere and/or subducted mantle lithosphere. But the above element ratios of ultrapotassic lavas in southern Tibet and ultrapotassic lamprophyres in eastern Tibet are higher than and similar to island arc volcanic rocks, which means that the primary magma sources contained a large quantity of crust contaminant from fluids and/or melts derived from subducted continent lithosphere. The studies result supports that the indian continental lithosphere has underthrust beneath Tibet to about the middle of the plateau, and Eurasian (Qaidam basin) mantle lithosphere has underthrust beneath the Qiangtang area of northern Tibet Plateau. In the paper we demonstrate further that the pulsing cycles of potassic-ultrapotassic volcanism of the Qinghai-Tibet Plateau result from an asthenospher pulsing upwelling caused by the intraplate s

关键词： Cenozoic volcanism magmatic source lithosphere tectonic evolution northern Tibet.

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CENOZOIC VOLCANISM AND liTHOSPHERETECTONIC EVOLUTION IN NORTH TIBET

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地学前缘 2000年第S1期7卷 153-154页

作者： chi xiaoguo, li cai, jin wei, liu Shen, Yang Rihong (Changchun University of Science and Technology,Changchun 130026, china)

Volcanism is the direct indication of the upper mantle thermodynamic activities, and it is an efficient path to study the lithosphere tectonic evolution. Cenozoic volcanism in North Tibet is of obviously time circles. In the space, from south to north, the chemical composition of volcanics changed from Na\|rich alkalic basaltic series formed 44Ma. ago into high\|K calcalkali series formed in about 40～*** Qiangtang area, into minor amount of leucite basalt and phonolite series of 26Ma., further into shoshonite series aged at 19～7Ma. in Cocoxili basin, until Quaternary shoshonite series in Karakunlun and Qilian Mt.\|Yumen region(xiaoguo chi etc.1999).Isotopes of Sr,Nd,Pb and trace elements in volcanic rocks provide wide range of information for the evolution of lithosphere in North Tibet after 45Ma. Present research shows that Na\|rich alkalic basalt series formed 44Ma. ago has the features of a primitive mantle in Sr,Nd,Pb isotopes. Along with the evolutionary tendency to high\|K calcalkali series and phonolite series, isotopes of Sr,Nd,Pb evolve towards EM2\|rich mantle end. The North Tibet is a compound continental mass combined from several terrains of different geological periods and the lithosphere mantle sees a complicated evolutionary history. Hence, the mixing of different rocks in ancient subduction zones and long history of metasomatism in the upper mantle offered excellent and favorable conditions for the formation of EM2 mantle end and for potassic enrichment. Isotopic evolutionary features indicate that the early magma came from the asthenosphere while later magmas were derived from partial remelting of lithosphere mantle.

关键词： volcanism evolution of lithosphere North Tibet

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Recent progress on surface chemistryⅡ:Property and characterization

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chinese Chemical Letters 2025年第1期36卷 8-57页

作者： Xin li Zhen Xu Donglei Bu jinming cai Huamei Chen Qi Chen Ting Chen Fang Cheng lifeng chi Wenjie Dong Zhenchao Dong Shixuan Du Qitang Fan Xing Fan Qiang Fu Song Gao jing Guo weijun Guo Yang He Shimin Hou Ying Jiang Huihui Kong Baojun li Dengyuan li Jie li Qing li Ruoning li Shuying li Yuxuan lin Mengxi liu Peinian liu Yanyan liu jingtao Lü Chuanxu Ma Haoyang Pan jinliang Pan Minghu Pan Xiaohui Qiu Ziyong Shen Qiang Sun Shijing Tan Bing Wang Dong Wang li Wang lili Wang Tao Wang Xiang Wang Xingyue Wang Xueyan Wang Yansong Wang Yu Wang Kai Wu wei Xu Na Xue linghao Yan Fan Yang Zhiyong Yang chi Zhang Xue Zhang Yang Zhang Yao Zhang Xiong Zhou Junfa Zhu Yajie Zhang Feixue Gao Yongfeng Wang Center for Carbon-based Electronics and Key Laboratory for the Physics and Chemistry of Nanodevices School of ElectronicsPeking UniversityBeijing 100871China Spin-X Institute School of MicroelectronicsSouth China University of TechnologyGuangzhou 511442China School of Materials and Energy Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage DevicesGuangdong University of TechnologyGuangzhou 510006China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China i-Lab CAS Key Laboratory of Nanophotonic Materials and DevicesSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing 210023China Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Institute of Physics&University of chinese Academy of Sciences Beijing 100190China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry Beijing Normal UniversityBeijing 100875China Beijing National Laboratory for Molecular Sciences(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School

Surface with well-defined components and structures possesses unique electronic,magnetic,optical and chemical *** a result,surface chemistry research plays a crucial role in various fields such as catalysis,energy,materials,quantum,and *** science mainly investigates the correspondence between surface property and *** probe microscopy(SPM)techniques are important tools to characterize surface properties because of the capability of atomic-scale imaging,spectroscopy and manipulation at the single-atom *** this review,we summarize recent advances in surface electronic,magnetic and optical properties characterized mainly by SPM-based *** focus on elucidating theπ-magnetism in graphene-based nanostructures,construction of spin qubits on surfaces,topology properties of surface organic structures,STM-based light emission,tip-enhanced Raman spectroscopy and integration of machine learning in SPM studies.

关键词： Surface chemistry Scanning probe microscopy π-Magnetism Spin qubits Tip-enhanced Raman spectroscopy

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Electrodeposition and characterization of thermoelectric Bi_2Se_3 thin films

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International Journal of Minerals,Metallurgy and Materials 2010年第1期17卷 104-107页

作者： Xiao-long li Ke-feng cai Hui li ling Wang chi-wei Zhou Functional Materials Research Laboratory Tongji University Shanghai 200092 China

Bi2Se3 thin films were electrochemically deposited on Ti and indium tin oxide-coated glass substrates, respectively, at room temperature, using Bi（NO3）3·5H2O and SeO2 as starting materials in diluted HNO3 solution. A conventional three-electrode cell was used with a platinum sheet as a counter electrode, and a saturated calomel electrode was used as a reference electrode. The films were annealed in argon atmosphere. The influence of cold isostatic pressing before annealing on the microstructure and thermoelectric properties of the films was investigated. X-ray diffraction analysis indicates that the film grown on the indium tin oxide-coated glass substrate is pure rhombohedral Bi2Se3, and the film grown on the Ti substrate consists of both rhombohedral and orthorhombic Bi2Se3.

关键词： thermoelectric thin films bismuth selenide electrodeposition thermoelectric properties cold isostafic pressing

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Manipulating the light-matter interactions in plasmonic nanocavities at 1 nm spatial resolution

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light(Science & Applications) 2022年第9期11卷 2107-2114页

作者： BAO-YING WEN jinG-YU WANG TAI-LONG SHEN ZHEN-wei ZHU PENG-CHENG GUAN JIA-SHENG liN wei PENG wei-wei cai HUAIZHOU jin QING-chi XU ZHI-liN YANG ZHONG-QUN TIAN JIAN-FENG li Department of Physics State Key Laboratory of Physical Chemistry of Solid SurfacesCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China College of Optical and Electronic Technology Jiliang UniversityHangzhou 310018China

The light-matter interaction between plasmonic nanocavity and exciton at the sub-diffraction limit is a central research field in ***,we demonstrated the vertical distribution of the light-matter interactions at~1 nm spatial resolution by coupling A excitons of MoS2 and gap-mode plasmonic ***,we observed the significant photoluminescence(PL)enhancement factor reaching up to 2800 times,which is attributed to the Purcell effect and large local density of states in gap-mode plasmonic ***,the theoretical calculations are well reproduced and support the experimental results.

关键词： resolution light plasmon

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Integrated metabolomics analysis of the effect of PPARδ agonist GW501516 on catabolism of BCAAs and carboxylic acids in diabetic mice

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chinese Chemical Letters 2021年第7期32卷 2197-2202页

作者： li Xiang Juan Nie li Wang Yu Wang jingchun Shi Juntong wei chi-Wai Lau Zongwei cai Yu Huang Heart and Vascular Institute School of Biomedical Sciences and Shenzhen Research Institute.Chinese University of Hong KongHong KongChina State Key Laboratory of Environmental and Biological Analysis and Department of Chemistry Hong Kong Baptist UniversityHong KongChina

The peroxisome proliferator-activated receptor(PPARδ)agonists are reported to improve insulin sensitivity,reduce glucose levels,and alleviate dysfunctional lipid metabolism in animal models of type 2 diabetes ***,the underlying mechanisms remain incompletely *** plays an essential role in the biological *** of metabolic changes in response to disease conditions or drug treatment is critical for better understanding of the pathophysiological *** this study,metabolic profiling analysis by gas chromatography-mass spectrometry integrated with targeted analysis by liquid chro matography-mass spectrometry was carried out in plasma samples of db/db diabetic mice after six-week treatment of PPARδagonist ***501516 treatment significantly altered levels of metabolites,such as branched-chain amino acids(BCAAs),BCAA metabolites(3-hydroxyisobutyric acid and 3-hydroxyisovaleric acid),long-chain fatty acids,uric acid and ketone bodies(3-hydroxybutyric acid and 2-hydroxybutyric acid)which are all associated with the impaired systemic insulin *** pre sent results indicate the beneficial effect of PPARδagonist in alleviating insulin resistance of diabetic mice by favorably modulating metabolic profile,thus providing valuable information in understanding the therapeutic potential of PPARδagonists in correcting metabolic dysfunction in diabetes.

关键词： PPARδ BCAAs BCAA metabolites Metabolomics Diabetic mice

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基于模拟的月球氢分布图像重建方法研究

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天文学报 2025年第1期66卷 31-45页

作者：冒晓莉朱雪波马涛蔡仁伟吴柯汎南京信息工程大学电子与信息工程学院南京210044 中国科学院紫金山天文台南京210023

获取准确的月球水氢分布图对于水冰的探测研究和后续深空探测均具有重要的科学价值.基于中子探测器的探测原理和卫星图像降质过程,构建了以kappa函数为基础的、具备移变特性的点扩散函数,对图像进行模糊加噪后得到模拟的探测图像.重点... 详细信息

获取准确的月球水氢分布图对于水冰的探测研究和后续深空探测均具有重要的科学价值.基于中子探测器的探测原理和卫星图像降质过程,构建了以kappa函数为基础的、具备移变特性的点扩散函数,对图像进行模糊加噪后得到模拟的探测图像.重点采用最大熵算法和Richardson-Lucy算法对模拟的探测图像进行重建,以目视效果、卡方检验和真实性检验作为评价标准进行对比研究.实验结果表明,无论是低噪还是高噪下,直接重建均无法取得较为理想的重建结果.经过去噪预处理后,在卡方检验安全的前提下,从总体效果来看,重建结果均优于预处理之前的情形.其重建图像真实性检验中偏差较大的点明显减少,意味着该方法可以获得更加准确可靠的重建结果.

关键词：航天器:仪器行星和卫星:探测技术:图像处理

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High sensitivity C-reactive protein and cardfiac resynchronization therapy in patients with advanced heart failure

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Journal of Geriatric Cardiology 2014年第4期11卷 296-302页

作者： chi cai wei HUA li-Gang DING jing WANG Ke-Ping CHEN Xin-wei YANG Zhi-Min liU Shu ZHANG Cardiac Arrhythmia Center Fuwai Hospital Beilishi road No. 167 Xicheng district Beijing 100037 China

Background The data on the prognostic values of high sensitivity C-reactive protein （hsCRP） levels in patients with advanced symp-tomatic heart failure （HF） receiving cardiac resynchronization therapy （CRT） are scarce. The aim of present study was to investigate the association of serum hsCRP levels with left ventricle reverse remodeling after six months of CRT as well as long-term outcome. Methods A total of 232 CRT patients were included. The assessment of hsCRP values, clinical status and echocardiographic data were performed at baseline and after six months of CRT. Long-term follow-up included all-cause mortality and hospitalizations for HF. Results During the mean follow-up periods of 31.3 ± 31.5 months, elevated hsCRP （〉3 mg/L） prior to CRT was associated with a significant 2.39-fold increase （P=0.006） in the risk of death or HF hospitalizations. At 6-month follow-up, patients who responded to CRT showed significant reductions or maintained low in hsCRP levels （–0.5 ± 4.1 mg/L reduction） compared with non-responders （1.7 ± 6.1 mg/L increase, P=0.018）. Com-pared with patients in whom 6-month hsCRP levels were reduced or remained low, patients in whom 6-month hsCRP levels were increased or maintained high experienced a significantly higher risk of subsequent death or HF hospitalizations （Log-rank P〈0.001）. The echocardio-graphic improvement was also better among patients in whom 6-month hsCRP levels were reduced or remained low compared to those in whom 6-month hsCRP levels were raised or maintained high. Conclusions Our findings demonstrated that measurement of baseline and follow-up hsCRP levels may be useful as prognostic markers for timely potential risk stratification and subsequent appropriate treatment strategies in patients with advanced HF undergoing CRT.

关键词： Cardiac resynchronization therapy Clinical outcome Heart failure High sensitivity C-reactive protein

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RELATION BETWEEN RAPID UPliFTING AND GRAVITATIONAL EQUIliBRIUM ,TECTONICS AND THERMODYNAMIC EFFECT IN QINGHAI—TIBET PLATEAU

引用

地学前缘 2000年第S1期7卷 336-338页

作者： chi xiaoguo,li cai, liu Shen, Yang Rihong (Changchun University of Science and Technology,Changchun 130026,china)

The distribution of the Mountain ranges, Plateau as well as the distribution of continents and oceans on the earth’s surface are the embodies of the structure and heat states of the materials at the deep crust and of the tectonic stress of regions. There should be a prevalent corresponding between terrestrial height and the texture, thermal and stress states of lithosphere. However, there is no a general consensus on what extent different factors affecting the height of a terrain should be up to now, and this is very apparent for the models of plateau uplifting.1\ Debates on the compensatory depth of crustal equilibrium\;Based on a previous equilibrium model, Woollard(1969) set up an equation to show the relation among the crustal thickness ( D \-m), the depth of Mohorovicic discontinuity(M)and height above sea level( H):D \-m=33.2+8.5 H (km). By this equation it is implied that equilibrium compensation has been reached at the depth of Mohorovicic discontinuity for the height of a terrain. As Woollard (1970)described, there is no evidence to show that mass distribution beneath the Mohorovicic discontinuity ever played an important roles in the equilibrium compensation of the crust.

关键词： gravitional compensation tectonism thermal action uplifting of plateau

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Sensitive Detection of Individual Neutral Atoms in a Strong Coupling Cavity QED System

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chinese Physics Letters 2011年第4期28卷 101-104页

作者： ZHANG Peng-Fei ZHANG Yu-chi li Gang DU jin-jin ZHANG Yan-Feng GUO Yan-Qiang WANG Jun-Min ZHANG Tian-cai li wei-Dong State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006 Department of Physics and Institute of Theoretical Physics Shanxi UniversityTaiyuan 030006

We experimentally demonstrate real-time detection of individual cesium atoms by using a high-finesse optical micro-cavity in a strong coupling regime.A cloud of cesium atoms is trapped in a magneto-optical trap positioned at 5mm above the micro-cavity *** atoms fall down freely in gravitation after shutting off the magnetooptical trap and pass through the *** cavity transmission is strongly affected by the atoms in the cavity,which enables the micro-cavity to sense the atoms *** detect the single atom transits either in the resonance or various *** single atom vacuum-Rabi splitting is directly measured to beΩ=2π×23.9 *** average duration of atom-cavity coupling of about 110μs is obtained according to the probability distribution of the atom transits.

关键词： coupling splitting enable

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