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GIS-Based and Data-Driven Bivariate Landslide-Susceptibility Mapping in the Three Gorges Area, China

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Pedosphere 2009年第1期19卷 14-20页

作者： BAI Shi-Biao WANG Jian LU Guo-nian Zhou Ping-Gen hou Sheng-Shan XU Su-Ning College of Geography Science Nanjing Normal University Nanjing 210097 （China） China Institute of Geo-Environment Monitoring Beijing 100081 （China）

A detailed landslide-susceptibility map was produced using a data-driven objective bivariate analysis method with datasets developed for a geographic information system （GIS）. Known as one of the most landslide-prone areas in China, the Zhongxian-Shizhu Segment in the Three Gorges Reservoir region of China was selected as a suitable case because of the frequency and distribution of landslides. The site covered an area of 260.93 km^2 with a landslide area of 5.32 km^2. Four data domains were used in this study, including remote sensing products, thematic maps, geological maps, and topographical maps, all with 25 m × 25 m pixels. Statistical relationships for landslide susceptibility were developed using landslide and landslide causative factor databases. All continuous variables were converted to categorical variables according to the percentile divisions of seed cells, and the corresponding class weight values were calculated and summed to create the susceptibility map. According to the map, 3.6% of the study area was identified as high-susceptibility. Extremely low-, very low-, low-, and medium-susceptibility zones covered 19.66%, 31.69%, 27.95%, and 17.1% of the area, respectively. The high- and medium-hazardons zones are along both sides of the Yangtze River, being in agreement with the actual distribution of landslides.

关键词： causative factors landslide-susceptibility statistical approaches Three Gorges area

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当前高校基建工程审计面临的挑战与策略分析

湖北第二师范学院学报 2024年第5期41卷 72-75页

作者：周婉怡张冬菊夏念李靓侯琳武汉纺织大学审计处武汉430073

从新形势下高校基建工程项目的特点入手,探讨当前高校工程审计所面临的问题与挑战。为了实现高校工程审计的可持续发展,保障高校建设资金的使用效益,通过对相关文献的研究以及对高校工程审计现状的调查,结合理论和实践两方面,分析并提... 详细信息

从新形势下高校基建工程项目的特点入手,探讨当前高校工程审计所面临的问题与挑战。为了实现高校工程审计的可持续发展,保障高校建设资金的使用效益,通过对相关文献的研究以及对高校工程审计现状的调查,结合理论和实践两方面,分析并提出了解决问题的建议以及相应的策略分析,为提升高校工程审计水平,实现高校工程审计的可持续发展提供一定帮助。

关键词：高校基建工程审计

A Wide Spaced Femtosecond Ti:Sapphire Frequency Comb at 15 GHz by a Fabry–Pérot Filter Cavity

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Chinese Physics Letters 2013年第10期30卷 97-100页

作者： hou Lei HAN Hai-nian ZHANG Jin-Wei LI De-Hua WEI Zhi-Yi Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190

We realize a wide spaced frequency comb by using an external low-fineness Fabry–Pérot(F-P)cavity to filter few-cycle laser pulses from a Kerr-lens mode-locked Ti:sapphire laser at the fundamental repetition rate of 350 *** spacing as wide as 15 GHz with spectrum covered from 690 nm to 710 nm is demonstrated,corresponding to a filter multiple of about *** scanning transmission peaks after the F-P cavity with cavity lengths are also simulated numerically,and the results are in agreement with the experiment.

关键词： Femto Fabry filter

SPECIFIC UP-REGULATION OF DNA POLYMERASE BY HUMAN PAPILLOMAVIRUS 16

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Chinese Medical Sciences Journal 2008年第2期23卷 108-112页

作者： Song-nian Liu Wu-yun Bai Russell M Frye Ⅱ Lin hou Bo Zhang Department of Pathology Baotou Medical College Baotou Inner Mongolia 014000 Department of Gynecology and Obstetrics First Affiliated Hospital of Baotou Medical College Baotou Inner Mongolia 014010 Department of Biochemistry University of Maryland School of Medicine Baltimore MD 21201 USA Department of Pathology Health Science Center of Peking University Beijing 100083

Obje, etive To analyze how the infection of human papillomavirus 16 （ HPV16 ） affects expression of DNA poly- merase β（DNA polB） with the aim of probing the mechanism of over-expression of DNA polB in human cancers. Methods Four fragments of human DNA polB promoter were amplified and constructed into luciferase reporter vec- tor pGL-Basic, generating pGL-BP, pGL-BMH, pGL-BMS, and pGL-BAT constructs respectively, and co-transfected with HPV16 or HPV6 into Hep2 cells. Luciferase activity was assayed 48 hours after transfectiorL Semi-quantitative RT- PCR was used to measure mRNA expression of endogenous DNA polB. Immunohistochemistry and in situ hybridization were used to analyze DNA polB expression and HPV16 or HPV6 infection in 38 cases of cervical lesions respectively. Results With co-transfection of HPV16 and DNA polB promoter-driving reporters into Hep2 cells, pGL-BP re- porter in full-length DNA polB promoter presented markedly elevated luciferase activities （ P 〈 0.05 ）. However, the other three mutant reporters： pGL-BMH, pGL-BMS, and pGL-BAT, generated no reporting activities in the presence of HPV16 （P 〉0.05 ）. On the contrary, all of polB promoter reporters were little stimulated in co-transfection of HPV6 （P 〉0.05 ）. The transfection of HPV16 could enhance the endogenous polB mRNA expression compared with that of HPV6 （3.42 vs. 0.80, P 〈0.05）. The DNA polB expression was found in 8 of 10 HPV16-positive cervical intraepi- thelial neoplasia grade Ⅲ（ CIN Ⅲ） cases, while was only found in 3 of 11 HPV6-positive condyloma accuminatum cases, but was negative in all chronic cervicitis cases. The correlation of DNA polB expression with HPV16 infection in cervical lesions was significant （ P 〈0.05 ）. Conclusions HPV16 is able to specifically stimulate the expression of DNA polB in human epithelial cells through interaction with the core upstream regulatory sequences of DNA polB promoter. Over-expression of DNA polB might be an explanation for the molecular mechanis

关键词： DNA polymerase β human papillomavirus expression

种植绿肥对我国水稻产量和土壤肥力影响的整合分析

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中国土壤与肥料 2024年第6期 79-88页

作者：李炫肖大康胡洋胡仁李锦涛侯俊韩天富曹玉贤年介响张卫峰长江大学农学院/农业农村部长江中游作物绿色高效生产重点实验室(部省共建) 湖北荆州434025 中国农业科学院农业资源与农业区划研究所/耕地培育技术国家工程实验室北京100081 长江大学生命科学学院湖北荆州434025 新华农大(武汉)科技有限公司湖北武汉430070 中国农业大学资源与环境学院北京100193

为探究种植绿肥对水稻产量和土壤肥力的影响以及为水稻增产稳产和土壤改良提供科学依据。对已发表的相关文献数据进行了收集,建立了362组包含种植绿肥(GM)和冬闲田(FFP)处理下水稻产量和土壤肥力的数据库。采用整合分析的方法,定量绿肥... 详细信息

为探究种植绿肥对水稻产量和土壤肥力的影响以及为水稻增产稳产和土壤改良提供科学依据。对已发表的相关文献数据进行了收集,建立了362组包含种植绿肥(GM)和冬闲田(FFP)处理下水稻产量和土壤肥力的数据库。采用整合分析的方法,定量绿肥在不同地区、水稻种植模式、土壤性质、氮肥用量、绿肥种类下对水稻产量及土壤肥力的提升幅度,采用随机森林模型探究影响绿肥效应的主控因素。研究结果发现,在不同地区下,GM处理对土壤有机质含量的提升在南方稻区最大(21.17%)。在不同水稻种植模式下,GM处理对水稻产量和土壤肥力的提升幅度均表现为双季稻>单季稻;土壤全氮含量≤1.5 g/kg、有机质含量≤20 g/kg时对产量的提升幅度较高;当GM处理的施氮量≤150 kg/hm^(2)时对产量和土壤有机质含量的提升幅度均较高,分别为12.47%和22.36%,但是随着施氮量的逐渐增加,GM处理的增产幅度下降。不同绿肥种类下,GM处理对产量和土壤有机质含量的提升幅度有所差异,在产量提升方面,豆科绿肥(12.47%)>非豆科绿肥(7.22%)>混合绿肥(6.32%);对土壤有机质含量提升方面混合绿肥(12.69%)>非豆科绿肥(10.93%)>豆科绿肥(9.37%)。随机森林分析结果表明,在主控因素方面GM处理对水稻增产主要受土壤有机质含量、施氮量和有效磷含量(贡献率分别为18%、16%和15%)的影响,而GM提高有机质的影响因素主要有地区、速效钾和速效氮含量(贡献率分别为14%、12%和11%)。因此,GM能显著提高水稻产量和土壤肥力,尤其是在低肥力的土壤状况下GM处理对产量的提升幅度较好,GM与化肥配合使用能促进水稻增产和稻田土壤有机质含量的提升,但GM的施氮量不宜超过150kg/hm^(2),水稻和绿肥轮作长江流域稻区推荐豆科绿肥,而在南方稻区进行混合绿肥。

关键词：绿肥水稻产量土壤肥力整合分析随机森林

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Influence of Horizontal Flow on Atrium in High-Rise Residential Building

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湖南大学学报（自然科学版） 2009年第S1期36卷 15-18页

作者： LI nian-ping,LI Jing,HE Dong-yue,ZHANG Min-hui,hou Su-juan(College of Civil Engineering,Hunan University,Changsha,Hunan 410082,China) College of Civil Engineering Hunan University Changsha 410082 China

In this study a 10-storied residential building model was employed to clarify the ventilation characteristics of the atrium and the rooms,which were effected by the different forms of lateral *** experiment was conducted under the combined effect of wind force and thermal buoyancy,and the similarity requirements were *** results have shown that the different forms of lateral openings cause the different ventilation effect of the building,and also have some certain *** conclusions provide a theoretical foundation for how to use the ventilation of atrium better in high-rise residential building.

关键词： high-rise residential building atrium model experiment horizontal flow natural ventilation

Experimental Study of Deformation of Sur- rounding Rock with Infrared Radiation

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Journal of China University of Mining and Technology 2005年第4期15卷 329-333页

作者： ZHANG Yong-jun AN Li-qian REN Run-hou FAN Shi-min MA nian-jie LI Jian-hui JI Yuan-ming School of Mechanics Architecture and Civil Engineering China University of Mining ＆ Technology Beifing 100083 China Lu＇an Environmental Energy Dev. Co. Ltd. Changzhi Shanxi 046024 China School of Safety and Resource Engineering China University of Mining ＆ Technology Beifing 100083 China

According to the practical conditions of coal roadway in Changcun Coal Mine of Lu＇an Mining Group, the deformation of rock surrounding roadway was experimentally studied by means of thermal infrared （TIP,） imaging system in the process of confined compressions. It is found that the model surface TIR temperature （TIRT） changes with the increase of load. Furthermore, TIRT changes non-synchronously in different ranges such as the roof, floor, wall, corners and bolted ranges. The TIRT is higher in the location of stress concentration and bolted ranges than that in the location of stress relaxation and broken ranges. The interaction ranges of bolt and rock are determined preliminarily according to the corresponding relationship of TIRT fields and the strain fields of the surrounding rock. The new method of TIR image processing has been proved to be effective for the study of bolt support and observation of roadway stability under mine pressure.

关键词： bolt support surrounding rock infrared radiation physical model test

Two new diterpene and sesquiterpene from Pteris dispar

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Chinese Chemical Letters 2011年第12期22卷 1451-1453页

作者： Zhan Ping Gou nian Ci Liang Jie hou Li Li Yan Tian Chang Yuan Wang Xun Cui Bao Jing Zhang Xiao Chi Ma Guangdong Key Laboratory of Research and Development of Natural Drugs Guangdong Medical CollegeZhanjiang 524023China School of Pharmacy Dalian Medical UniversityDalian 116044China Department of Oriental Pharmacy Woosuk UniversityWanju-gunJeonbuk 565-701Republic of Korea

A new diterpene and a new sesquiterpene were isolated from Pteris dispar and identified on the basis of spectral data including 2D *** 1 and 2 showed potent cytotoxic activity against KB cell.

关键词： Pteris dispar ent-Kaurane Sesquiterpenoid

Radial velocity measurements from LAMOST medium-resolution spectroscopic observations: a pointing towards the Kepler field

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Research in Astronomy and Astrophysics 2019年第5期19卷 133-140页

作者： nian Liu Jian-Ning Fu Weikai zong Jian-Rong Shi A-Li Luo Hao-Tong Zhang Xiang-Qun Cui Yong-Hui hou Yang Pan Xin-Rui Shan Jian-Jun Chen Zhong-Rui Bai Jian-Xing Chen Bing Du Wen hou Yu-Chen Liu Hao Tian Jiang-Tao Wang Jia-Xin Wang Ke-Fei Wu Yu-Zhong Wu Hong-Liang Yan Fang Zuo Department of Astronomy Beijing Normal University Key Lab for Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences School of Astronomy and Space Science University of Chinese Academy of Sciences Nanjing Institute of Astronomical Optics & Technology National Astronomical Observatories Chinese Academy of Sciences

Radial velocity is one of the key measurements in understanding the fundamental properties of stars, stellar clusters and the Galaxy. A plate of stars in the Kepler field was observed in May of 2018 with the medium-resolution spectrographs of LAMOST, aiming to test the performance of this new system which is the upgraded equipment of LAMOST after the first five-year regular survey. We present our analysis on the radial velocity measurements(RVs) derived from these data. The results show that slight and significant systematic errors exist among the RVs obtained from the spectra collected by different spectrographs and exposures, respectively. After correcting the systematic errors with different techniques, the precision of RVs reaches ～1.3,～1.0,～0.5 and ～0.3 km s^(-1) at S/Nr = 10, 20, 50 and 100, respectively. Comparing with the RVs of standard stars from the APOGEE survey, our RVs are calibrated with a zero-point shift of～7 km s^(-1). The results indicate that the LAMOST medium-resolution spectroscopic system may provide RVs with a reasonable accuracy and precision for the selected targets.

关键词： technique:spectroscopy stars:radial velocity stars:statistics