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| 1 | Monitoring the concentration of N_2O in the Fildes Peninsula, maritime Antarctica显示文摘Gases in the marine boundary layer in Fildes Peninsula, maritime Antarctica were sampled and analyzed for the first time. Sampling sites included areas covered by moss and lichen growth, penguin colonies and an area where scientific research stations are located. A total of 211 samples were analyzed for N2O concentrations, with an average of (321.33±3.07) nL/L. This is above the global average value of 314 nL/L. It is found that the N2O concentrations evidently increase during the summer months. Concentrations around the research stations are higher than at remote areas, indicating a potential source from human activities on the island. N2O concentrations at a large penguin colony on Barton Peninsula are the highest among the sampled areas. This may explain why N2O concentrations in Fildes Peninsula are higher than the global average. Our preliminary conclusions are that human activities and emissions from penguin dropping-amended soil and vegetation soil constitute the major sources of N2O in the | SUN Liguang, XIE Zhouqing, ZHAO Junlin, XING Guangxi, SHI Shulian & Du LijuanInstitute of Polar Environment, University of Science and Technology of China, Hefei 230026, China Institute of Environmental Science, Beijing Normal University, Beijing 100875, China Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 2 10008, China | 2000 | Chinese Science Bulletin2000，45，21： | 21 |
| 2 | Timing and geochemical characters of the Sanchazi magmatic arc in Mianlüe tectonic zone,South Qinling显示文摘The Sanchazi mafic-ultramafic complex in Mianlüe tectonic zone,South Qinling can be subdivided into two blocks,I.e.Sanchazi paleo-magmatic arc and Zhuangkegou paleo-oceanic crust fragment (ophiolite).The Sanchazi paleo-magmatic arc is mainly composed of ande-site,basaltic and basalt-andesitic gabbro(or diorite),andesitic dyke,plagiogranite and minor ul-tramafric rocks,which have typical geochemical features of island arc volcanic rocks,such as high field strength element(e.g.Nb,Ti)depletions and lower Cr,Ni contents.The Light rare earth element (LREE) and K enrichments of these rocks and zircon xenocrystals of 900 Ma from plagiogranite suggest that this magmatic arc was developed on the South active continental margin of the South Qinling micro-continent.The U-Pb age of (300±61) Ma for zircons from plagiogranite in-dicates that the Mianlüe paleo-oceanic crust was probably subducted underneath the South Qinling micro-continent in Carboniferous.This is consistent with the formation time (309Ma) of the Huwan eclogite originating form oceanic subduction in Dabie Mountains,suggesting that the Mianlüe paleo-ocean probably extended eastward to the Dabie Mountains in Carboniferous.The high-Mg adakitic rocks in Sanchazi paleo-magmatic arc suggest thet the subducted oceanic crust was relatively young (<25Ma) and hot. | LI Shuguang1, HOU Zhenhui1, YANG Yongcheng2, SUN Weidong1,1), ZHANG Guowei3, & LI Qiuli1 1. School of Earth and Space Sciences,University of Science and Technology of China ,Hefei 230026,China 2. Regional Geological Survey Team of Shaanxi Province,Xianyang 712000, China 3. Department of Geology, Northwest University,Xi抋n 710069, China | 2004 | Science China Earth Sciences2004，47，4： | 16 |
| 3 | Tectonic Framework and Evolution of the Dabie Mountains in Anhui, Eastern China显示文摘The Dabie Mountains are believed to be a collisional orogenic belt between the Yangtze amd Sino-Koreancontinental plates. It is composed of the foreland fold-thrust zone, the subducting cover and basement of theYangtze continental plate, the coesite- and diamond-bearing ultra-high pressure metamorphic zone and themeta-ophiolitic melange zone in the subducting basement, the fore-arc flysch nappe and the back thrust zoneoccurring respectively on the southern and northern margins of the Sino-Korean continental plate and the in-herited basin with molassic deposits on the northern margin. When the palaeo-Dabie oceanic plate subductednorthward in the Early Palaeozoic, volcanic arc and back arc basin probably formed on the southern margin ofthe Sino-Korean continental plate. The Sm / Nd isotopic dating of the strata and eclogite which were drawn in-to the foreland fold-thrust zone indicates that the intense collision of the two continental plates took place inthe Early Mesozoic. | Xu Shutong Jiang Laili Liu Yican Zhang Yong Institute of Geological Sciences of Anhui Province, Hefei, Anhui Sun Sheping | 1992 | Acta Geologica Sinica(English Edition)1992，66，3： | 12 |
| 4 | Improving thermoelectric properties of p-type Bi_2Te_3-based alloys by spark plasma sintering | Di LI,Rui-rui SUN,Xiao-ying QIN Key Laboratory of Materials Physics,Institute of Solid State Physics,Chinese Academy of Sciences, Hefei 230031,China | 2011 | Progress in Natural Science:Materials International2011，21，4： | 10 |
| 5 | Discovery and analysis of ultra-micro grinding grain texture in slipping lamellae of ductile-brittle zone显示文摘Based on the observation of the deep bore cores sampled from the State of Cali-fornia, USA, preferred arranged particulate concentration belts were found in the ultra-slipping lamellae. And the same phenomenon was found again later in the bore cores from the petroleum basin in the Northern Shaanxi Province. It may be the product of the dynamic processes involv-ing tumbling, grinding and compresso-shearing functions, so the spherical particulates with ul-tra-size of nm and mm are called grinding grain. The formation of the grinding grains is related with the ductile-brittle deformation, the lateral pressure of the slipping, and the very low grade of dynamic metamorphism of the rocks. Based on the systematic analysis, it is indicated that some elements like Nb and Ta are enriched in the grinding grains in the granitic rocks because of the chemical differentiation, and that the slipping lamellae bearing grinding grains in mudstone with smear efficiency prove a perfect seal for oil and gas reservoirs. Meanwhile, the paper provides bases for the studies on the fast stick-slip movement and shear paradigm. | GE Heping1, SUN Yan1, LU Xiancai1, ZHU Wenbin1, GUO Jichun1, LIU Deliang2 & Chi-yuen Wang3 1. Department of Earth Sciences, Nanjing University, State Key Laboratory of Mineral Deposit, Nanjing 210093, China 2. Department of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China 3. Department of Geology and Geophysics, University of California, Berkeley, CA 94720, USA | 2004 | Science China Earth Sciences2004，47，3： | 9 |
| 6 | Atmospheric nitrous oxide observations above the oceanic surface during CHINARE-18显示文摘The gas samples in the marine boundary layer were collected from the track for research ship Xuelong during the 18th Chinese Antarctic Research Expedition (CHINARE-18) and nitrous oxide measurements were made by HP5890ECD-GC in the laboratory. The results represent the shipboard N2O data set obtained within the lower troposphere with the average concentration of (313.5±2.6)nL*L-1 from 31°N to 69°S. The results showed a latitudinally weighted, mean interhemispheric difference of 0.61 nL*L-1. The latitudinal distribution of atmospheric N2O concentration was analyzed from northern midlatitudes to Southern Ocean around the Antarctic continent and it was showed that N2O concentration in the current confluences was higher than that in other oceanic areas. This indicated that strong N2O emissions occurred there. The longitudinal distribution of N2O concentrations in the Southern Ocean also showed similar situation. According to the interhemispheric difference of atmospheric N2O concentrations and the two-box model, we estimated that 2/5 of the global flux of N2O into the atmosphere is derived from the sources in the southern hemisphere. | ZHU Renbin, SUN Liguang and LIU Xiaodong(Institute of Polar Environment, University of Science and Technology of China, Hefei 230026, China) | 2003 | Progress in Natural Science:Materials International2003，13，8： | 9 |
| 7 | Formation of hyperbranched polymers in atom transfer radical copolymerization of MMA and DVB显示文摘Hyperbranched poly(methyl methacrylate)s (HPMMAs) have been successfully prepared by atom transfer radical copolymerization of MMA and divinylbenzene (DVB).Kinetic study shows complete consumption of the initiator in 0.5 h,and relatively low polymerization rate when DVB content in the feed was high.By analyzing MALDI-TOF spectra of the resulting copolymers,the linear A n B (n=0,1,2,3) oligomers were formed in 0.5 h of polymerization,and then the oligomers reacted each other to form dimers,further reactions produced HPMMA.The SEC and NMR spectroscopies were used to trace the polymerization,and the results demonstrate that small amount of the branching reactions occur in the initial polymerization,and the branched polymers are significantly generated past a certain conversion depending upon the feed ratios.Raising the content of DVB in the monomer mixture can increase the pendent vinyl groups of the linear oligo-inimers,leading to gelation at low MMA conversion. | SUN Miao & PAN CaiYuan CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China | 2010 | Science China Chemistry2010，53，12： | 4 |
| 8 | A mechanism for enhanced photocatalytic activity of nano-size silver particle modified titanium dioxide thin films显示文摘Ag-TiO2 nanostructured thin films with silver volume fraction of 0–20% were deposited on silicon and quartz substrates by RF magnetron sputtering and annealed in ambient air at 950°C for 1 h. The phase structure and surface topography of the films were characterized by X-ray diffractometer and transmission electron microscope. Photocatalytic activity of the films was evaluated by light induced degradation of methyl orange (C14H14N3NaO3S) solution using a high pressure mercury lamp as lamp-house. The relation of photocatalytic activity and silver content was studied in detail. It was found that silver content influences phase structure of TiO2 thin films, and silver in the films is metallic Ag (Ag0). With increasing silver content from 0 to 20 vol%, photocatalytic activity of the films increases first and then decreases. A suitable amount (2.5–5 vol%) silver addition can significantly enhance the photocatalytic activity of TiO2 films. The enhanced photocatalytic activity was mainly attributed to the extension of visible light absorption region of the films, the presence of anatase phase, the increase of oxy-gen anion radicals O2? and reactive center of surface Ti3+, and the better separation between electrons and holes on the films surface. | MENG FanMing1,2,3*, LU Fei1,3, SUN ZhaoQi1,3 & Lü JianGuo1,2,4 1 School of Physics and Materials Science, Anhui University, Hefei 230039, China 2 Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024, China 3 Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039, China 4 Department of Physics and Electronic Engineering, Hefei Normal University, Hefei 230061, China | 2010 | Science China(Technological Sciences)2010，53，11： | 4 |
| 9 | Super-resolution imaging and tracking of TGF-β receptor II on living cells显示文摘Single-particle tracking photoactivated localization microscopy(spt PALM) has recently emerged as a powerful tool for high-density imaging and tracking of individual molecules in living cells. In this work, we have monitored and compared the diffusion dynamics of TGF-b type II receptor(Tb RII) at high expression level using both traditional single-particle tracking(SPT) and spt PALM.The ligand-induced aggregation of Tb RII oligomers was further indicated by spt PALM. Due to the capacity of distinguishing and tracking single molecules within diffraction limit, spt PALM outperforms traditional SPT by providing more accurate biophysical information. | Zi Ye Nan Li Libo Zhao Yahong Sun Hefei Ruan Mingliang Zhang Jinghe Yuan Xiaohong Fang | 2016 | Science Bulletin2016，61，8： | 3 |
| 10 | Temporal and spatial variations of δ^(15)N and δ^(18)O for atmospheric N_2O above the oceanic surface from Shanghai to Antarctica显示文摘During the 22nd Chinese Antarctic Research Expedition (CHINARE-22), the atmospheric gas samples above the oceanic surface and near the surface were collected on the track for the scientific ship 'Xuelong' and on Millor Peninsula of eastern Antarctica, respectively, using the Tedlar gas bags. Every day the sampling times were 10:00 and 22:00 (local time), respectively. In the laboratory, high-precision measurement of the isotopic compositions for N2O in these gas samples was conducted using Thermo Finnigan MAT-253 Isotopic Mass Spectrometer with a fully automated interface for the pre-GC concen-tration (PreCon) of trace gases. The temporal and spatial variations of δ 15N and δ 18O in atmospheric N2O were analyzed. The mean δ 15N and δ 18O-N2O values above the oceanic surface were (7.21±0.50)‰ and (44.52±0.52)‰, respectively. From 30°N to Antarctica, the δ 15N (6.05‰―7.88‰) linearly increased with the rate of about 0.01‰ with the latitude while the δ 18O (43.05‰―48.78‰) showed a large fluctua-tion. The δ 15N negatively correlated with air temperature and N2O concentration, and slightly positively correlated with δ 18O. The summertime variations of δ 15N and δ 18O-N2O appeared the same trend on Millor Peninsula of eastern Antarctica. They significantly positively correlated with each other and negatively with N2O concentration. The δ 15N and δ 18O-N2O at different sites averaged (7.42±0.35)‰ and (44.69±0.49)‰, respectively, slightly higher than those above the oceanic surface, significantly higher than those of atmospheric N2O in the low-latitude regions of Northern Hemisphere. The predominant factors affecting the spatial variations of δ 15N and δ 18O values were also discussed. The isotopic data given in this study can help to investigate the global and regional N2O budgets. | ZHU RenBin1, LIU YaShu1, XU Hua2, MA Jing2 & SUN LiGuang1 1 Institute of Polar Environment, University of Science and Technology of China, Hefei 230026, China 2 State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210091, China | 2008 | Science China Earth Sciences2008，51，6： | 2 |
| 11 | A source term model of perturbation in a numerical study on flows around a slender body of revolution at a high angle of attack显示文摘A numerical study on flows around a slender body of revolution at a high angle of attack is conducted to investigate the influence of strength and circumferential angle of perturbation on flow asymmetry.A source term model is applied to simulate a real geometrical perturbation near the tip of the slender body.It can greatly facilitate the adjustment of perturbation strength.The results show that the bistable phenomenon does not appear any more at a small perturbation strength.For different perturbation strengths,the energy of the asymmetric perturbation flow experiences a similar spatial exponential growth regime with the same growth rate.The appearance of the bistable phenomenon is closely related to nonlinear saturation of the perturbation flow as perturbation strength increases. | Yang Liu,Dongjun Ma,Dejun Sun~*,Xieyuan Yin Department of Modern Mechanics,University of Science and Technology of China,Hefei 230027,China | 2009 | Progress in Natural Science:Materials International2009，19，12： | 2 |
| 12 | Effects of electro-acupuncture on 5-HT,NOS and gastric mucosa in stress rats显示文摘Efectsofelectroacupunctureon5HT,NOSandgastricmucosainstressratsZHUShunLi,XUGuanSun,WANGZhenJiu,CHENQuanZhuandJIAOJieIns... | ZHU Shun Li, XU Guan Sun, WANG Zhen Jiu, CHEN Quan Zhu and JIAO Jie Institute of Acupuncture and Meridians, Anhui College of Traditional Chinese Medicine, Hefei 230038, Anhui Province, China | 1997 | World Journal of Gastroenterology1997，3，3： | 2 |
| 13 | Re-Os isotopic composition of the Dongling ⅢCD iron meteorite显示文摘Re, Os concentrations and Os isotopic compositions of the Dongling ⅢCD iron meteorite were determined by N-TIMS technique. The result was compared with that of the other irons and chondrites. The Re and Os concentrations of the Dongling iron meteorite were plotted on the trends of the group ⅢA and ⅣA irons. The Pt-Os relation of the Dongling iron meteorite is similar to that of the group ⅡA irons. That suggests a higher fractionation for the Dongling iron meteorite. | SUN Weidong, DU Andao, YANG Gang, XIE Zhi & CHEN JiangfengDeparlmenl of Earth and Space Sciences, Laboratory tor Chemical Geodynamics. University of Science and Technology of China, Hefei 230026. China:Institute of Rock and Mineral Analysis, Chinese Academy of Geological Sciences. Beijing 100037, China | 2001 | Chinese Science Bulletin2001，46，6： | 2 |
| 14 | Electrostatic Discharge Effects on the High-voltage Solar Array显示文摘A certain number of charges are deposited on the surface of high-voltage solar array because of effects of space plasma,high-energy charged particles,and solar illumination,hence the surface is charged.Phenomena of electrostatic discharge(ESD) occur on the surface when the deposited charges exceed a threshold amount.In this paper,the mechanism of this ESD is discussed.The ground simulation experiment of the ESD using spacecraft material under surface charging is described,and a novel ESD protecting method for high-voltage solar array,i.e.an active protecting method based on the local strong electric field array is proposed.The results show that the reversal potential gradient field between the cover surface and the substrate materials of high-voltage solar array is a triggering factor for the ESD on the array.The threshold voltage for the ESD occurring on the surface is about 500 V.The charged particles could be deflected using the electric field active protecting method,and hence the ESD on the surface is avoided even when the voltage on the conductor array increases to a certain value.These results pave the way for further developing the protecting measures for high-voltage solar arrays. | YUAN Qingyun SUN Yongwei CAO Hefei LIU Cunli | 2013 | 高电压技术2013，39，10： | 2 |
| 15 | Microstructure and optical properties of nano Ag-ITO films显示文摘Nano Ag-ITO films with Ag volume fraction of 0.3%-1.0% were prepared by radio-frequency magnetron co-sputtering and analyzed by X-ray diffraction,scanning electron microscopy and ultraviolet-visible spectroscopy.Microstructure analysis shows that the films are composed of polycrystalline ITO matrix embedded with Ag nanoparticles with a mean size of 60-100 nm.Transmissivity spectra of Ag-ITO films indicate that the visible light transmissivity of the films decreases with increasing the Ag fraction.The transmissivity of the annealed films is higher than that of the as-deposited films.The volume 0.3% Ag-ITO films have the highest light reflectance.The annealed films exhibit lower light absorptance than as-deposited films.A surface plasmon resonance(SPR) peak of volume 0.3% Ag-ITO films is located around 510 nm.Compared with the annealed ITO film,the annealed volume 0.3% Ag-ITO film shows 10% higher reflectivity,while its transmittance is almost the same as that of the annealed ITO film,indicating its potential application in new-type transflective displays. | XIAO Lei1,3,CAO ChunBin2,3,SONG XuePing1,3,MENG FanMing1,3 & SUN ZhaoQi1,3 1 School of Physics and Material Science,Anhui University,Hefei 230039,China 2 School of Sciences,Anhui Agricultural University,Hefei 230036,China 3 Key Laboratory of Opto-Electronic Information Acquisition and Manipulation,Ministry of Education,Hefei 230039,China | 2010 | Science China(Technological Sciences)2010，53，5： | 1 |
| 16 | CHAIN RECURRENT POINTS AND TOPOLOGICAL ENTROPY OF A TREE MAP显示文摘Let f be a tree map,P(f) the set of periodic points of f and CR(f) the set of chain recurrent points of f. In this paper,the notion of division for invariant closed subsets of a tree map is introduced.It is proved that: (1) f has zero topological entropy if and only if for any x∈CR(f)-P(f) and each natural number s the orbit of x under f s has a division; (2) If f has zero topological entropy,then for any x∈CR(f)-P(f) the ω-limit set of x is an infinite minimal set. | Sun TaixiangDept.of Math.,Guangxi Univ.,Nanning 530004 Dept. of Math.,Univ. of Science and Technology of China,Hefei 230026,China. | 2002 | Applied Mathematics(A Journal of Chinese Universities)2002，17，3： | 1 |
| 17 | Photo-induced effect in the layered perovskite manganite La_(1.2)Sr_(1.8)Mn_(1.8)Co_(0.2)O_(7)显示文摘It is helpful to study the photo-induced effect in the perovskite manganites not only for elucidating the mechanism of colossal magnetoresistance (CMR) effect but also for potential applications in technology. The laser-induced effect in the Co doping layered perovskite manganites La1.2Sr1.8Mn1.8Co0.2O7 is studied in this paper and the obtained results are also compared with that gained in the Nd-doping manganites with cubic perovskite structure. | ZHANG Ruili1, DAI Jianming1, SONG Wenhai1, MA Yongqing1, YANG Jie1 & SUN Yuping1,2 1. Key Laboratory of Internal Friction and Defects in Solids, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China 2. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, China Correspondence should be addressed to Zhang Ruili (email: rlzhang@issp.ac.cn) Received September 1, 2003 | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，1： | 1 |
| 18 | The Effect of Heterogeneity on Rock's Ultrasonic Attenuation and Its Correction显示文摘The effect of Rayleigh scatter caused by the heterogeneity of rocks, on attenuation measurement has been considered adequately. According to the related theory and calculation, we can distinguish the intrinsic attenuation from the scattering attenuation. And we amended the classic spectral ratio method, based on the homogeneous medium hypothesis. Using the improved spectral ratio method, we can obtain Q value within a wider frequency range, so we can eliminate the uncertainty condition in classic spectral ratio, where Q value depends on the frequency range. The frequency shift method has been introduced and improved. Those three methods on one set of data had been applied. The results obtained by using the classic and improved spectral ratio and frequency shift methods fit well. | Wang Baoshan, Sun Daoyuan,Li Shengjie, Li Weidong, Shi Xingjue, and Liu Bin Department of Earth and Space Science, University of Science and Technology of China, Hefei 230026, China | 2001 | Earthquake Research in China2001，15，3： | 1 |
| 19 | Beam instrumentation and diagnostics for HLS显示文摘The beam diagnostic instrumentation for the Heifei Light Source (HLS)is described. It provides sufficient parameters for machine study during the commi-sioning and common operation. The measured results are presented. | SUN Bao-Gen WANG Jun-Hua LU Ping FANG Zhi-Gao GAO Yun-Feng(National Synchrotron Radiation Laboratory, University of Science and Technology of China,Hefei, Anhui 230029) | 2000 | Nuclear Science and Techniques2000，11，2： | 1 |
| 20 | The Implementation Methods for Computer Aided Design and Analysis on Color-Woven Fabrics显示文摘Methods for computer aided design and analysis on color-woven fabrics are presented. The relation of color pattern, colored warp, colored weft and the model for regular weave texture are given based on their formative principle. Some efficient algorithms are developed to determine the color order of warp and weft threads which yields a given color pattern and regular weave texture. Finally, the design system structure and data process flowing are introduced. | Dong Yude1, 2 Zhao Han2 Sun Jieting3 1. University of Science and Technology of China, Hefei 230052, China 2. HeFei University of Technology, Hefei 230009, China 3. AnHui Vocational Institute of Textile , Hefei, 230052, China | 2002 | Computer Aided Drafting,Design and Manufacturing2002，12，1： | 0 |
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