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Petrogenesis of Paleoproterozoic Luyashan charnockitic rocks in Shanxi Province: Constraints from Geochemistry and Nd isotope

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Progress in Natural Science:Materials International 2006年第2期16卷 183-191页

作者： liU Chaohui, liU Shuwen, li Qiugen, WANG Yueran, DANG Qingning, GU libing, YANG Bin and ZHAO Fengsan (Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education school of earth and space sciences, peking university, beijing 100871, china) [a]Key Laboratory of Orogenic Belts and Crustal Evolution Ministry of Education Beijing China [b]school of earth and space Science Peking University Beijing China

Luyashan charnockite pluton mainly consists of monzonite, adamellite, charnockite and syenogranite, which are characterized by the enrichment of TiO2, P2O5, K2O, Zr, Nb, Y, Pb, La, Ce, Ba and a higher K2O/Na2O and depletion of MgO, cao, Mg#, Th, U and lower Sr/Ba and Rb/Ba. The negative correlations between Zr, Nb, Ce and SiO2 are distinct from I-type granites. Iso-topically Luyashan charnockite plutons are relatively uniform in Nd isotope, displaying initial εNd(t) (-5.93 to -6.97) and Nd depleted mantle model ages (2.67 Ga to 2.78Ga). These features indicate that Luyashan charnockitic magma derived from pre-existing late Archean crustal sources and the partial melting of mafic granulites probably under exceptionally high temperature with CO2-rich fluid. The garnet is a main residual phase during the partial melting. The original dry charnockitic magma experienced crystal fractionation of pyroxene, plagioclase, apatite and ilmenite during early crystallization. The geochemical evidence suggests that the Luyashan charnockitic magma was probably generated in the post-collision thermal relaxation and uplift tectonic setting after the main collision ( - 1850 Ma) between the Eastern and Western continental blocks.

关键词： Luyashan charnockite geochemistry Sm-Nd isotopes petrogenesis Paleoproterozoic.

Down-scaling LUCC based on the histo-variogram

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Science china(Technological sciences) 2009年第5期52卷 1348-1353页

作者： ZHANG Hao cao chunxiang li guoping YANG Hua li XiaoWen QIN Jun State Key Laboratory of Remote Sensing Science Institute of Remote Sensing ApplicationChinese Academy of SciencesBeijing 100101China school of earth and space sciences Peking UniversityBeijing 100871China State Key Laboratory of Remote Sensing Science Beijing Normal UniversityBeijing 100875China Institute of Tibetan Plateau Research Chinese Academy of SciencesBeijing 100083China

In remote sensing applications,accurate extraction of land type area after classification is very *** for images of land use/cover change(LUCC) obtained from the special spatial resolution re-mote sensing data,it will be of great significance to obtain the land type area information with higher resolution by making use of spatial distribution characteristcs information of the land type itself first and further scaling-down in a given scale threshold on the basis of the existing spatial resolution *** explicit expression of the relationship between the measurement scale,global fractal dimension and the land type area corresponding to different measurement scales is obtained on the research basis of the authors' histo-variogram using the standardized area index(SAI).A good attempt has been made to obtain the land type area information with higher resolution by merely using the spatial distribution characteristcs information of the land type in the image itself and further scaling-down in a given scale threshold on the basis of the existing spatial resolution data.

关键词： histo-variogram scaling-down scale effect LUCC

HiFAST:An HIdata calibration and imaging pipeline for FAST

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Science china(Physics,Mechanics & Astronomy) 2024年第5期67卷 182-199页

作者： Yingjie Jing Jie Wang Chen Xu Ziming liu Qingze Chen Tiantian liang Jinlong Xu Yixian cao Jing Wang Huijie Hu Chuan-Peng Zhang Qi Guo liang Gao Mei Ai Hengqian Gan Xuyang Gao Jinlin Han ligang Hou Zhipeng Hou Peng Jiang Xu Kong Fujia li Zerui liu li Shao Hengxing Pan Jun Pan Lei Qian Jinghai Sun Ningyu Tang Qingliang Yang Bo Zhang Zhiyu Zhang Ming Zhu National Astronomical Observatories Chinese Academy of SciencesBeijing 100012China Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 02206China school of Astronomy and space Science University of Chinese Academy of SciencesBeijing 100049China Guizhou Radio Astronomical Observatory Guizhou UniversityGuiyang 55000China Max Planck Institute for Extraterrestrial Physics Garching 85748Germany Kavli Institute for Astronomy and Astrophysics Peking UniversityBeijing 100871China Institute of Computational Cosmology Department of PhysicsUniversity of DurhamDurham DHI 3LEUK CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Deep space Exploration Laboratory/Department of Astronomy University of Science and Technology of ChinaHefei 230026China school of Astronomy and space Science University of Science and Technology of ChinaHefei 230026China Astrophysics Department of PhysicsUniversity of OxfordOxford OX/3RHUK College of earth sciences Guilin University of TechnologyGuilin 541004China Department of Physics Anhui Normal UniversityWuhu 241002China school of Astronomy and space Science Nanjing UniversityNanjing 210023China Key Laboratory of Modern Astronomy and Astrophysics Nanjing UniversityNanjing 20023China

The Five-hundred-meter Aperture Spherical radio Telescope(FAST)has the largest aperture and a 19-beam L-band receiver,making it powerful for investigating the neutral hydrogen atomic gas(HI)in the *** present HiFAST(https://***),a dedicated,modular,and self-contained calibration and imaging pipeline for processing the H?data of *** pipeline consists of frequency-dependent noise diode calibration,baseline fitting,standing wave removal using an FFT-based method,flux density calibration,stray radiation correction,and gridding to produce data *** modules can be combined as needed to process the data from most FAST observation modes:tracking,drift scanning,On-The-Fly mapping,and most of their *** HiFAST,the root-mean-square(RMS)noises of the calibrated spectra from all 19 beams were only slightly(~5%)higher than the theoretical *** results for the extended source M33 and the point sources are consistent with the results from *** moment maps(0,1 and 2)of M33 agree well with the results from the Arecibo Galaxy Environment Survey(AGES)with a fractional difference of less than 10%.For a common sample of 221 sources with signal-to-noise ratio S/N>10 from the Arecibo Legacy Fast ALFA(ALFALFA)survey,the mean value of fractional difference in the integrated flux density,Sint,between the two datasets is approximately 0.005%,with a dispersion of 15.4%.Further checks on the integrated flux density of 23 sources with seven observations indicate that the variance in the flux density of the source with luminous objects(Sint>2.5 Jy km s-1)is less than 5%.Our tests suggest that the FAST telescope,with the efficient,precise,and user-friendly pipeline HiFAST,will yield numerous significant scientific findings in the investigation of the H?in the universe.

关键词： fractional luminous correction

纳米纤维矿物纤蛇纹石为模板合成多孔炭及其在超级电容器中的应用

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新型炭材料 2018年第3期33卷 229-236页

作者：曹曦传秀云李爱军黄杜斌北京大学化学与分子工程学院北京100871 北京大学地球与空间科学学院北京100871

以天然纳米纤维矿物纤蛇纹石为模板,蔗糖为碳源,合成了具有一维管状形貌的多级孔结构炭材料。通过调控模板与碳源的比例,可以改变炭材料的孔结构分布和比表面积。当纤蛇纹石与蔗糖的质量比为1∶3.0时,模板炭的中大孔比例较高,达到87%,... 详细信息

以天然纳米纤维矿物纤蛇纹石为模板,蔗糖为碳源,合成了具有一维管状形貌的多级孔结构炭材料。通过调控模板与碳源的比例,可以改变炭材料的孔结构分布和比表面积。当纤蛇纹石与蔗糖的质量比为1∶3.0时,模板炭的中大孔比例较高,达到87%,作为双电层电容器(EDLC)储能材料的电化学性能最佳,比电容最大:在6 M KOH三电极条件下,0.5 A/g电流密度条件时容量可达150 F/g,在20 A/g时,比电容仍能保持75%。以10 A/g电流密度循环10 000次,比电容没有明显损失,仍达到119 F/g。

关键词：多孔炭模板法纤蛇纹石电化学性能

HiFAST:An H?data calibration and imaging pipeline for FAST

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Science china(Physics,Mechanics & Astronomy) 2024年第5期Mechanics & Astronomy) .卷 186-203页

作者： Yingjie Jing Jie Wang Chen Xu Ziming liu Qingze Chen Tiantian liang Jinlong Xu Yixian cao Jing Wang Huijie Hu Chuan-Peng Zhang Qi Guo liang Gao Mei Ai Hengqian Gan Xuyang Gao Jinlin Han ligang Hou Zhipeng Hou Peng Jiang Xu Kong Fujia li Zerui liu li Shao Hengxing Pan Jun Pan Lei Qian Jinghai Sun Ningyu Tang Qingliang Yang Bo Zhang Zhiyu Zhang Ming Zhu National Astronomical Observatories Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University school of Astronomy and space Science University of Chinese Academy of Sciences Guizhou Radio Astronomical Observatory Guizhou University Max Planck Institute for Extraterrestrial Physics Kavli Institute for Astronomy and Astrophysics Peking University Institute of Computational Cosmology Department of PhysicsUniversity of Durham CAS Key Laboratory of FAST National Astronomical ObservatoriesChinese Academy of Sciences Deep space Exploration Laboratory/Department of Astronomy University of Science and Technology of China school of Astronomy and space Science University of Science and Technology of China Astrophysics Department of PhysicsUniversity of Oxford College of earth sciences Guilin University of Technology Department of Physics Anhui Normal University school of Astronomy and space Science Nanjing University Key Laboratory of Modern Astronomy and Astrophysics Nanjing University

The Five-hundred-meter Aperture Spherical radio Telescope（FAST） has the largest aperture and a 19-beam L-band receiver,making it powerful for investigating the neutral hydrogen atomic gas（H?） in the *** present HiFAST（https://***）,a dedicated,modular,and self-contained calibration and imaging pipeline for processing the H?data of *** pipeline consists of frequency-dependent noise diode calibration,baseline fitting,standing wave removal using an FFT-based method,flux density calibration,stray radiation correction,and gridding to produce data *** modules can be combined as needed to process the data from most FAST observation modes:tracking,drift scanning,On-The-Fly mapping,and most of their *** HiFAST,the root-mean-square（RMS） noises of the calibrated spectra from all 19 beams were only slightly（～5%） higher than the theoretical *** results for the extended source M33 and the point sources are consistent with the results from *** moment maps（0,1 and 2） of M33 agree well with the results from the Arecibo Galaxy Environment Survey（AGES） with a fractional difference of less than 10%.For a common sample of 221 sources with signal-to-noise ratio S/N>10 from the Arecibo Legacy Fast ALFA（ALFALFA） survey,the mean value of fractional difference in the integrated flux density,Sint,between the two datasets is approximately 0.005%,with a dispersion of 15.4%.Further checks on the integrated flux density of 23 sources with seven observations indicate that the variance in the flux density of the source with luminous objects(Sint>2.5 Jy km s-1) is less than 5%.Our tests suggest that the FAST telescope,with the efficient,precise,and user-friendly pipeline HiFAST,will yield numerous significant scientific findings in the investigation of the H? in the universe.

关键词：

Wavenumber-4 spectral component extracted from TIMED/SABER observations

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earth and Planetary Physics 2020年第5期4卷 436-448页

作者： Xing li WeiXing Wan JinBin cao ZhiPeng Ren Key Laboratory of earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China school of space and Environment Beihang UniversityBeijing 100083China Key Laboratory of space Environment Monitoring and Information Processing Ministry of Industry and Information TechnologyBeijing 100083China beijing National Observatory of space Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Innovation Academy for earth Science Chinese Academy of SciencesBeijing 100029China university of the Chinese Academy of sciences Beijing 100049China

The wavenumber spectral components WN4 at the mesosphere and low thermosphere(MLT)altitudes(70–10 km)and in the latitude range between±45°are obtained from temperature data(T)observed by the Sounding of the Atmosphere using Broadband Emission Radiometry(SABER)instruments on board the National Aeronautics and space Administration(NASA)’s Thermosphere–Ionosphere–Mesosphere Energetics and Dynamics(TIMED)spacecraft during the 11-year solar period from 2002 to *** analyze in detail these spectral components WNk and obtain the main properties of their vertical profiles and global *** report that all of the wavenumber spectral components WNk occur mainly around 100 km altitude,and that the most prominent component is the wavenumber spectral component WN4 *** these long duration temperature data with results of previous investigations,we have found that the yearly variation of spectral component WN4 is similar to that of the eastward propagating non-migrating diurnal tide with zonal wavenumber 3(DE3)at the low latitudes,and to that of the semi-diurnal tide with zonal wavenumber 2(SE2)at the mid-latitudes:the amplitudes of the A4 are larger during boreal summer and autumn at the low-latitudes;at the mid-latitudes the amplitudes have a weak peak in *** addition,the amplitudes of component WN4 undergo a remarkable short period variation:significant day-to-day variation of the spectral amplitudes A4 occurs primarily in July and September at the *** summary,we conclude that the non-migrating tides DE3 and SE2 are likely to be the origins,at the low-latitudes and the mid-latitudes in the MLT region,respectively,of the observed wavenumber spectral component WN4.

关键词： TIMED observations wavenumber spectral components non-migrating tides short period variation

The source of tropospheric tides

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earth and Planetary Physics 2020年第5期4卷 449-460页

With the method of Hough mode decomposition(HMD),the tidal sources of the three main tidal components,namely,the migrating components DW1(diurnal westward propagating wavenumber 1)and SW2(semidiurnal westward propagating wavenumber 2)and the non-migrating component DE3(diurnal eastward propagating wavenumber 3),at the tropospheric altitudes(1–12 km)and in the latitude range of±60°,were obtained from National Centers for Environmental Prediction(NCEP)Climate Forecast System Reanalysis(CFSR)data during the interval from 1988 to *** analyzed these sources in detail at 6 km and obtained the main properties of their yearly *** DW1 source was found to present a weak seasonal variation in the lower latitudes(about±10°–15°).That is,the amplitudes of the DW1 sources were larger in the summer months than in the winter months,and DW1 presented semi-annual variation near the equator(±10°)such that the DW1 source was larger at the equinoxes than at the *** addition,the SW2 source was symmetric and was stronger in the southern hemisphere than in the northern *** SW2 source presented remarkable annual and semi-annual variation such that the amplitudes were largest during the March equinox months and larger during the June solstice *** contrast,DE3 appeared mainly around the equatorial latitudes within about±30°.The DE3 source presented remarkable semiannual variation that was larger around the solstices than the equinoxes in the southern hemisphere,and it was opposite in the northern *** HMD,we found that the tropospheric tides were primarily dominated by some leading propagating Hough modes,specifically,the(1,1),(2,3),and(3,3)modes;the influences of the other Hough modes were *** consequences of an El Niño–Southern Oscillation modulation of tidal amplitudes for the energy and momentum budgets of the troposphere may now be expected to attract *** summary,the above yearly variations of the main tidal sources and

关键词： tropospheric tides Hough mode decomposition yearly variations

Effects of a dipole-like crustal field on solar wind interaction with Mars

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earth and Planetary Physics 2020年第1期4卷 23-31页

作者： ShiBang li HaoYu Lu Jun Cui YiQun Yu Christian Mazelle Yun li JinBin cao school of space and Environment Beihang UniversityBeijing 100191China Key Laboratory of space Environment Monitoring and Information Processing Ministry of Industry and Information TechnologyBeijing 100191China school of Atmospheric sciences Sun Yat-Sen UniversityZhuhai Guangdong 519082China CNRS Institute de Recherche en Astrophysique et PlanétologieToulouseFrance

A three-dimensional four species multi-fluid magnetohydrodynamic (MHD) model was constructed to simulate the solar wind global interaction with Mars. The model was augmented to consider production and loss of the significant ion species in the Martian ionosphere, i.e., H^+, O2^+, O^+, CO^+2, associated with chemical reactions among all species. An ideal dipole-like local crustal field model was used to simplify the empirically measured Martian crustal field. Results of this simulation suggest that the magnetic pile-up region (MPR) and the velocity profile in the meridian plane are asymmetric, which is due to the nature of the multi-fluid model to decouple individual ion velocity resulting in occurrence of plume flow in the northern Martian magnetotail. In the presence of dipole magnetic field model, boundary layers, such as bow shock (BS) and magnetic pile-up boundary (MPB), become protuberant. Moreover, the crustal field has an inhibiting effect on the flux of ions escaping from Mars, an effect that occurs primarily in the region between the terminator (SZA 90°) and the Sun Mars line of the magnetotail (SZA 180°), partially around the terminator region. In contrast, near the tailward central line the crustal field has no significant impact on the escaping flux.

关键词： solar wind interaction with Mars global MHD simulation crustal field escape flux

Peanut-chocolate-ball-inspired construction of the interface engineering between CdS and intergrown Cd:Boosting both the photocatalytic activity and photocorrosion resistance

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Journal of Energy Chemistry 2023年第1期76卷 75-89,I0003页

作者： Wending Zhou Feng li Xiangfei Yang Wanliang Yang Chun Wang Rui cao Chengliang Zhou Mengkui Tian school of Chemistry and Chemical Engineering Guizhou UniversityGuiyang 550025GuizhouChina beijing National Laboratory for Molecular sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Interface engineering can improve the charge separation efficiency and inhibit photocorrosion is an emerging direction of developing more efficient and cost-effective photocatalytic ***,we report the sulfur-confined intimate Cd S intergrown Cd(Cd S/Cd)Ohmic junction(peanut-chocolate-ball like)for high-efficient H2production with superior anti-photocorrosion ability,which was fabricated from in-situ photoreduction of CdS intergrown Cd2SO4(OH)2(CdS/Cd2SO4(OH)2)prepared through a facile space-controlled-solvothermal *** ratios of CdS/Cd can be effectively controlled by tunning that of CdS/Cd2SO4(OH)2which were prepared by adjusting the volume of reaction liquid and the remaining space of the *** investigations and density functional theory(DFT)calculations reveal that the Cd S intergrown Cd Ohmic junction interfaces(with appropriate content Cd intergrown on Cd S(19.54 wt%))are beneficial in facilitating the transfer of photogenerated electrons by constructing an interfacial electric field and forming sulfur-confined structures for preventing the positive holes(h+)oxidize the Cd *** contributes to a high photocatalytic H2production activity of 95.40μmol h-1(about 32.3 times higher than bare Cd S)and possesses outstanding photocatalytic stability over 205 h,much longer than most Cd S-based photocatalysts previously *** interface engineering design inspired by the structure of peanut-chocolate-ball can greatly promote the future development of catalytic systems for wider application.

关键词： Interface engineering Sulfur-confined CdS/Cd intergrown Ohmic junction DFT calculations Photocorrosion resistance