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GIs-based Earthquake-Triggered Landslide Hazard Zoning Using Contributing Weight Model

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Journal of Mountain science 2010年第4期7卷 339-352页

作者： WANG Meng Institute of Mountain Hazards and Environment ChineseAcademy of Science Chengdu 610041 China graduate university of chinese{3. of sciences Belling 100049 China Key Laboratory of Geo-surface Process and Mountain Hazards Institute of Mountain Hazards and Environment Chinese Academy of Science Chengdu 610041 China

Earthquake-triggered landslides have aroused widespread attention because of their tremendous ability to harm people's lives and *** best way to avoid and mitigate their damage is to develop landslide hazard maps and make them available to the public in advance of an *** construction can then be built according to the level of hazard and existing structures can be retrofit as *** recent years various approaches have been made to develop landslide hazard maps using statistical analysis or physical ***,these methods have *** study introduces a new GIs-based approach,using the contributing weight model,to evaluate the hazard of seismically-induced *** this study,the city and surrounding area of Dujiangyan was selected as the research area because of its moderate-high seismic *** parameters incorporated into the model that related to the probability of landslide occurrence were:slope gradient,slope aspect,geomorphology,lithology,base level,surface roughness,earthquake intensity,fault proximity,drainage proximity,and road *** parameters were converted into raster data format with a resolution of 25×25m2 *** of the GIs correlations shows that the highest earthquake-induced landslide hazard areas are mainly in the hills and in some of the moderately steep mountainous areas of central *** highest hazard zone covers an area of 11.1% of the study area,and the density distribution of seismically-induced landslides was 3.025/km2 from the 2008 Wenchuan *** moderately hazardous areas are mainly distributed within the moderately steep mountainous regions of the northern and southeastern parts of the study area and the hills of the northeastern part;covering 3..0% of the study area and with a density distribution of 2.123.km2 resulting from the Wenchuan *** lowest hazard areas are mainly distributed in the topographically flat plain in the northeas

关键词： Earthquake-triggered landslide GIs Contributing weight model Hazard zoning

Validation of three infiltration models on purple soil under simulated rainfall

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Progress in Natural science:Materials International 2007年第9期17卷 1059-1066页

作者： Wang Yukuan1,2,Fu Bin1,3.Xu Pei1,2,Wang Daojie1,2,Wang Xiantuo1,3.and Wang Yongqiang1,3.1.Key Laboratory of Mountain surface Process and Hazards,chinese academy of seiences,Chengdu 610041,China 2.Institute of Mountain Hazards and Environment,chinese academy of sciences,Chengdu 610041,China 3.graduate university of the chinese academy of sciences,beijing 100049,China) Key Laboratory of Mountain surface Process and Hazards Chinese Academy of Seiences Chengdu 610041 China Institute of Mountain Hazards and Environment， chinese academy of sciences， Chengdu 610041 China graduate university of the chinese {3. of sciences Beijing 100049 China

so as to find models suitable for the prediction of water infiltration in purple soil,infiltration rates simulated by three popular empirical infiltration models,Horton model,Kostiakov model,and the modified Kostiakov model,were compared by using those observed results on slope in purple soil under rainfall simulation.28 sets of infiltration data were divided into two parts for parameter estimation and validation *** performance of the three infiltration models was evaluated with the Nash and sutcliffe efficiency *** results show that the percent for Nash and sutcliffe efficiency greater than 0.7 is about 69.7% for the Horton model,and 48.48%,and 54.55% for the Kostiakov model and the modified Kostiakov model,*** model is better than Kostiakov model and the modified Kostiakov model in most rain events in the ***,Kostiakov model is still suitable for reasonable prediction of the infiltration in purple soil sloping farmland because fewer parameters are ***,rainfall intensity has significant effects on the parameter values used in the simulation *** simulation results can be improved by choosing suitable parameters according to the rainfall intensity.

关键词： infiltration model sloping farmland purple soil rainfall simulation

Preparation of Pt/K_2La_2Ti_3._(10) and its photo-catalytic activity for hydrogen evolution from methanol water solution

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science China Chemistry 2006年第2期49卷 162-168页

作者： CUI Wenquan1,3. LIU Li2, FENG Liangrong1, XU Chenghua1, LI Zijian1, Lü shaojie1 & QIU Fali1 1. Chengdu Institute of Organic Chemistry, chinese academy of sciences, Chengdu 610041, China 2. Chemistry Department, sichuan university of science & Engineering, Zigong 643.3., China 3. {3. school of the chinese academy of sciences, beijing 10003., China Correspondence should be addressed to Qiu Fali 1. Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China 3. graduate school of the chinese academy of sciences Beijing 100039 China 2. Chemistry Department Sichuan University of Science & Engineering Zigong 643033 China

A layered perovskite-type oxide K2La2Ti3.10 was prepared with high-temperature solid-state reaction, and characterized with X-ray diffraction (XRD) and ultraviolet-visible diffuse re-flectance spectroscopy (UV-Vis DRs). Platinum was loaded onto K2La2Ti3.10 as a co-catalyst with different methods. The dispersion of platinum on K2La2Ti3.10 was determined with HOT method. The photocatalytic activity of Pt/K2La2Ti3.10 was studied. This catalyst showed much higher activity in hydrogen evolution reaction than Ni/K2La2Ti3.10. The effects of different amounts of loaded platinum and several preparation methods were evaluated. The best achieved hydrogen evolution rate was 23..88 μmol·h?1 by Pt(2%)/K2La2Ti3.10. A possible band structure and mechanism were discussed based on the results.

关键词： photocatalysis hydrogen platinum K_2La_2Ti_3._(10) support

The relation between black hole masses and Lorentz factors of the jet components in blazars

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Research in Astronomy and Astrophysics 2009年第3期9卷 293-301页

作者： Ming Zhou1,2,3.and Xin-Wu Cao1,2 1 shanghai Astronomical Observatory, chinese academy of sciences, shanghai 20003., China 2 Joint Institute for Galaxy and Cosmology (JOINGC) of sHAO and UsMC, shanghai 20003., China 3.graduate school of the chinese academy of sciences, beijing 100049, China shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Joint Institute for Galaxy and Cosmology (JOINGC) of sHAO and UsMC Shanghai 200030 China graduate school of the chinese academy of sciences Beijing 100049 China

We explore the relationship between black hole mass (MBH) and the motion of the jet components for a sample of blazars. The Very Long Baseline Array (VLBA) 2 cm survey and its continuation: Monitoring of Jets in active galactic nuclei (AGNs) with VLBA Experiments (MOJAVE) have observed 278 radio-loud AGNs, of which 146 blazars have reliable measurements of their apparent velocities of the jet components. We calculate the minimal Lorentz factors for these sources from their measured apparent velocities, and their black hole masses are estimated with their broad-line widths. A sig- nificant intrinsic correlation is found between black hole masses and the minimal Lorentz factors of the jet components. The Eddington ratio is only weakly correlated with the min- imal Lorentz factor, which may imply that the Blandford-Znajek (BZ) mechanism may dominate over the Blandford-Payne (BP) mechanism for the jet acceleration (at least) in blazars.

关键词： black hole physics — galaxies: active — galaxies: jets — galaxies: nuclei

An analysis of the wide area differential method of geostationary orbit satellites

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science China(Physics,Mechanics & Astronomy) 2009年第2期52卷 310-314页

作者： CAI ChengLin1,2,3., LI XiaoHui1 & WU HaiTao1 1 National Time service Center, chinese academy of sciences, Lintong 710600, China 2 Hunan Institute of Humanities, science and Technology, Loudi 417000, China 3.graduate {3. of chinese academy of sciences, beijing 100049, China 1. National Time service Center Chinese Academy of Sciences Lintong 710600 China 2. Hunan Institute of Humanities Science and Technology Loudi 417000 China 3. graduate university of chinese {3. of sciences Beijing 100049 China

This work aims to obtain a wide area differential method for geostationary orbit (GEO) constellation. A comparison between the dilution of precision (DOP) of four-dimensional (4D) calculation including sa- tellite clock errors and ephemeris errors and that of three-dimensional (3.) calculation only including ephemeris errors with the inverse positioning theory of GPs shows the conclusion that all the 3. PDOPs are greatly reduced. Based on this, a basic idea of correcting satellite clock errors and ephem- eris errors apart is put forward, and moreover, a specific method of separation is proposed. satellite clock errors are separated in a master station with time synchronization, and all the remaining pseu- do-range errors after the satellite clock errors have been deducted are used to work out ephemeris corrections of all GEO satellites. By a comparative analysis of user positioning accuracy before and after differential, the wide area differential method is verified to be quite valid for GEO constellation.

关键词： geostationary orbitsatellite dilution of precision satellite ephemeris errors satellite clock errors wide area differential method

fMRI time series analysis based on stationary wavelet and spectrum analysis

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Progress in Natural science:Materials International 2006年第11期16卷 1171-1176页

作者： ZHI Lianhe~ 1,2,3., ZHAO Xia~4, sHAN Baoci~1**, PENG silong~5, YAN Qiang~1, YUAN Xiuli~1 and TANG Xiaowei~ 1,6 (1. Key Laboratory of Nuclear Analysis Techniques, Institute of High Energy Physics, chinese academy of sciences, beijing 100049, China 2. {3. school of chinese academy of sciences, beijing 100049, China 3. Department of Physics, Zhoukou Normal university, Zhoukou 466100, China 4. Research Imaging Center, university of Texas Health science Center, san Antonio, Texas 78229, UsA 5. National AsIC Design and Engineering Center, Institute of Automation, chinese academy of sciences, beijing 100049, China 6. Department of Physics, Zhejiang university, Hangzhou 3.0027, China) [a]Key Laboratory of Nuclear Analysis Techniques Institute of High Energy Physics Chinese Academy of Sciences Beijing China [b]graduate school of chinese academy of sciences Beijing China [c]Department of Physics Zhoukou Normal University Zhoukou China [d]Research Imaging Center University of Texas Health Science Center San Antonio Texas USA [e]National AsIC Design and Engineering Center Institute of Automation Chinese Academy of Sciences Beijing China [f]Department of Physics Zhejiang University Hangzhou China

The low signal to noise ratio (sNR) of functional MRI (fMRI) prefers more sensitive data analysis methods. Based on stationary wavelet transform and spectrum analysis, a new method with high detective sensitivity was developed for analyzing fMRI time series, which does not require any prior assumption of the characteristics of noises. In the proposed method, every component of fMRI time series in the different time-frequency scales of stationary wavelet transform was discerned by the spectrum analysis, then the components from noises were removed using the stationary wavelet transform, finally the components of real brain activation were detected by cross-correlation analysis. The results obtained from both simulated and in vivo visual experiments illustrated that the proposed method has much higher sensitivity than the traditional cross-correlation method.

关键词： fMRI stationary wavelet transform spectrum analysis data analysis.

The role of aerial algae in the formation of the landscape of the Yunnan stone Forest,Yunnan Province, China

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science China Earth sciences 2004年第9期47卷 846-864页

作者： TIAN Youping1,3. ZHANG Jie2, sONG Linhua1 & BAO Haosheng2 1. Institute of Geographic sciences and Natural Resources Research, chinese academy of sciences, beijing 100101, China 2. Department of Geography, Nanjing {3., Nanjing 210093. China 3. school of Earth sciences and Resources, China {3. of Geosciences, beijing 100083. China Institute of Geographic sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Department of Geography Nanjing University Nanjing 210093 China school of Earth sciences and Resources China University of Geosciences Beijing 100083 China

Aerial algae on the surface of carbonate rocks at the stone Forest, shilin County, Yunnan Province, China, and their bioerosion were investigated in the field and studied in the laboratory in detail. Through the observation, identification and statistics of more than one hun- dred algal samples and rock samples with the optical microscopes (stereomicroscope, biological microscope) and the scanning electronic microscope (sEM), the relationships between erosional forms on the surface of the stone Forest and algae and/or algal communities and the genetic mechanism for the formation of erosional forms were analyzed. It is suggested that aerial algae play an active role in bioerosive processes that may affect the formation of karst erosional forms. These effects include both direct and indirect ones. The direct effect is the initiative control (algal shape-controlling role) of algae on the formation of karst forms of various scales, mostly mi- cro-scale (3.) and minor-scale (10-3.10-1m) erosional forms. The algal shape-controlling roles can be divided into the algal individual shape-controlling role and the algal community shape-controlling role. The former mostly controls the formation of micro-scale erosional forms, while the latter mostly controls the formation of micro-scale and smaller minor-scale erosional forms. The indirect effect refers to the promoting role of algae in the formation of karst forms, which may affect the formation of karst forms of all types and scales. The bioerosion of algae accelerates the weathering process of the whole stone Forest karst landforms.

关键词： aerial algae, bioerosion, the stone Forest, Yunnan Province, China.

Effects of isolation after sexual experience on anxiety-like, depressive-like behaviors and affective states in male rats

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chinese science Bulletin 2010年第36期55卷 4136-4142页

作者： WEN Fei1,2 & XU Lin1,3.1 Laboratory of Learning and Memory and Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, the chinese academy of sciences, Kunming 650223. China 2 graduate {3. of the chinese academy of sciences, beijing 100049, China 3.Mental Health Institute, the 2nd Hospital of Central south {3., Changsha 410011, China Laboratory of Learning and Memory and Key Laboratory of Animal Models and Human Disease Mechanisms Kunming Institute of Zoology the Chinese Academy of Sciences Kunming 650223 China graduate university of the chinese {3. of sciences Beijing 100049 China Mental Health Institute the 2nd Hospital of Central South University Changsha 410011 China

studies on social isolation have provided evidence for an enhanced anxiety-like phenotype, depressive-like symptoms and higher levels of 22-kHz ultrasonic vocalizations (UsVs); whereas sexual experience could induce significant changes in affective states, decrease anxiety-and depressive-like responses. However, the behavioral and emotional alterations in male rats exposed to isolation after sexual experience remain poorly understood. Therefore, the present study examined anxiety-and depressive-like parameters, as well as UsV emissions in male rats isolated for 1, 2, or 7 d following 1-week sexual (male-female paired housing) or social (male-male paired housing) interaction. Isolation for 1 d resulted in increased depressive-like symptoms, and 2-d isolation induced elevated anxiety-like behavior in sexually inexperienced rats, while rats with sexual experience exhibited comparable levels of emotionality at each isolation time. Moreover, isolated rats without sexual experience emitted less 22-and 50-kHz UsVs, but sexually experienced rats exhibited similar affective states compared with control ones. These results suggested that prior sexual experience could have a modulatory effect on experimental rat emotional responses to isolation.

关键词：雄性大鼠情感状态焦虑抑郁行为情绪变化相互作用调节作用

Conceptual design and simulation analysis of thermal behaviors of TGR blast furnace and oxygen blast furnace

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science China(Technological sciences) 2010年第1期53卷 85-92页

作者： ZHANG Hui1,2,LI HuiQuan1,TANG Qing1 & BAO WeiJun1 1 National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology,Institute of Process Engineering,chinese academy of sciences,beijing 100190,China 2 {3. university of chinese academy of sciences,beijing 100049,China 1. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China2. Graduate University of Chinese Academy of Sciences Beijing 100049 China

Extensive use of carbon based fuel is the main inducement for global warming and more extreme *** carbon dioxide emission and enhancing energy use is a common subject in steel *** the integrated steel plant,decreasing carbon dioxide emission must consider energy balance in the whole iron and steel works,and secondary energy must be actively *** promising blast-furnaces,top gas recovery blast furnace(TGR-BF) and oxygen blast furnace have been *** this paper,conceptual TGR blast furnace and oxygen blast furnace are *** on the idea of blast furnace gas de-CO2 circulating as reducing agent and the idea of pure oxygen blast decreasing the thermal reserve zone temperature,process modeling is conducted with AsPEN *** is shown that the developed model reasonably describes the energy balance and mass balance feature of the furnace,and provides basic thermodynamic condition for *** effects of changes in different operation conditions are studied by sensitivity analysis and reference data from simulation.

关键词： TGR blast-furnace thermal behavior simulation analysis CO2 emission decreasing