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| 1 | Spatio-temporal rupture process of the 2008 great Wenchuan earthquake显示文摘Focal mechanism and dynamic rupture process of the Wenchaun Ms8.0 earthquake in Sichuan province on 12 May 2008 were obtained by inverting long period seismic data from the Global Seismic Network (GSN), and characteristics of the co-seismic displacement field near the fault were quantitatively ana-lyzed based on the inverted results to investigate the mechanism causing disaster. A finite fault model with given focal mechanism and vertical components of the long period P-waves from 21 stations with evenly azimuthal coverage were adopted in the inversion. From the inverted results as well as after-shock distribution, the causative fault of the great Wenchuan earthquake was confirmed to be a fault of strike 225°/dip 39°/rake 120°, indicating that the earthquake was mainly a thrust event with right-lateral strike-slip component. The released scalar seismic moment was estimated to be about 9.4×1020―2.0×1021 Nm, yielding moment magnitude of Mw7.9―8.1. The great Wenchuan earthquake occurred on a fault more than 300 km long, and had a complicated rupture process of about 90 s duration time. The slip distribution was highly inhomogeneous with the average slip of about 2.4 m. Four slip-patches broke the ground surface. Two of them were underneath the regions of Wenchuan-Yingxiu and Beichuan, respectively, with the first being around the hypocenter (rupture initiation point), where the largest slip was about 7.3 m, and the second being underneath Beichuan and extending to Pingwu, where the largest slip was about 5.6 m. The other two slip-patches had smaller sizes, one having the maximum slip of 1.8 m and lying underneath the north of Kangding, and the other having the maximum slip of 0.7 m and lying underneath the northeast of Qingchuan. Average and maximum stress drops over the whole fault plane were estimated to be 18 MPa and 53 MPa, respectively. In addition, the co-seismic displacement field near the fault was analyzed. The results indicate that the features of the co-seismic displacement field were coincident with those of the intensity distribution in the meizo-seismal area, implying that the large-scale, large-amplitude and surface-broken thrust dislocation should be responsible for the serious disaster in the near fault area. | ZHANG Yong FENG WanPeng XU LiSheng ZHOU ChengHu CHEN YunTai | 2009 | Science China Earth Sciences2009，52，2： | 68 |
| 2 | The Tartary Buckwheat Genome Provides Insights into Rutin Biosynthesis and Abiotic Stress Tolerance显示文摘 | Zhang, Lijun Li, Xiuxiu Ma, Bin Gao, Qiang Du, Huilong Han, Yuanhuai Li, Yan Cao, Yinghao Qi, Ming Zhu, Yaxin Lu, Hongwei Ma, Mingchuan Liu, Longlong Zhou, Jianping Nan, Chenghu Qin, Yongjun Wang, Jun Cui, Lin Liu, Huimin Liang, Chengzhi Qiao, Zhijun | 2017 | Molecular Plant2017，10，9： | 53 |
| 3 | A proposal for the theoretical analysis of the interactive coupled effects between urbanization and the eco-environment in mega-urban agglomerations显示文摘Mega-urban agglomerations are strategic core areas for national economic development and the main regions of new urbanization. They also have important roles in shifting the global economic center of gravity to China. However, the development of mega-urban agglomerations has triggered the interactive coercion between resources and the eco-environment. The interactive coupled effects between urbanization and the eco-environment in mega-urban agglomerations represent frontier and high-priority research topics in the field of Earth system science over the next decade. In this paper, we carried out systematic theoretical analysis of the interactive coupling mechanisms and coercing effects between urbanization and the eco-environment in mega-urban agglomerations. In detail, we analyzed the nonlinear-coupled relationships and the coupling characteristics between natural and human elements in mega-urban agglomerations. We also investigated the interactive coercion intensities between internal and external elements, and the mechanisms and patterns of local couplings and telecouplings in mega-urban agglomeration systems, which are affected by key internal and external control elements. In addition, we proposed the interactive coupling theory on urbanization and the eco-environment in mega-urban agglomerations. Furthermore, we established a spatiotemporal dynamic coupling model with multi-element, multi-scale, multi-scenario, multi-module and multi-agent integrations, which can be used to develop an intelligent decision support system for sustainable development of mega-urban agglomerations. In general, our research may provide theoretical guidance and method support to solve problems related to mega-urban agglomerations and maintain their sustainable development. | FANG Chuanglin ZHOU Chenghu GU Chaolin CHEN Liding LI Shuangcheng | 2017 | Journal of Geographical Sciences2017，27，12： | 36 |
| 4 | Streamflow trends and hydrological response to climatic change in Tarim headwater basin显示文摘这份报纸在 Tarim 河盆的 headwater 在地区性的水文学周期上学习了流速及流水量的变化和气候的可变性条件的影响。这研究在以大气的条件高度可变,并且在雪和冰融化的地方,在自然水文学政体起一个重要作用的环境在流速及流水量调查观察趋势的可能的原因。三条头溪流的分泌物趋势与 Mann-Kendall 测试从 1957 ~ 2002 有一个重要增加趋势。在流速及流水量政体的复杂时间频率分布特别被 Morlet 小浪分析在 40 年表明。目的是查明空间的气候的因素和时间的分发的性质,包含了文件结束(实验直角的功能) 的使用在 Tarim 鈥檚 headwater 盆上从通常气候的记录比较主导的温度,降水和蒸发模式。它证明自从 1990 年代,第一个主要部件为温度和降水被统治,它在全球温暖的条件下面识别空间、时间的模式特征的重要上升趋势。指数的关联在表面空气温度和吝啬的河分泌物月刊之间被加亮,因此地区性的流量由 10% 鈥 ? 增加 6% 当表面空气温度由 1 掳 C 升起时。因为他们的分水岭性质支持由冰河和雪喂的流量,结果建议 headwater 盆是从气候变化的观点的最脆弱的环境融化对温度变化的弱点影响的水和他们的基础降雨,降雪,和冰河和冰融化。 | JIANG Yan ZHOU Chenghu CHENG Weiming | 2007 | Journal of Geographical Sciences2007，17，1： | 26 |
| 5 | Structure and contents of layered classification system of digital geomorphology for China显示文摘这份报纸为中国论述数字地形学的一个标准化分层的分类系统的结构和内容。这个数字分类方法把形态学的地形特征与开始相结合。exogenic 和 endogenic 力量的 15 个范畴的一个总数被划分成二个宽广范畴:形态基因、 morpho 结构的地形。多角形补丁被用来管理形态基因的类型,并且独居的点,线和多角形被用来管理 morpho 结构的类型。数字形态基因的类型的分类方法能被划分成七层,即基本形态学和高度,开始,亚开始,形态学,微形态学,斜坡和方面,材料和岩性学。方法基于分层的指示物建议矩阵形式的联合。每种地形类型的属性从所有七层或一些被获得。为 15 个力量范畴,一些分类指示物和计算方法为基本形态学被介绍,词法并且形态基因的类型的亚 morphologic 地形。独居的多角形,线性并且 morpho 结构的地形的点类型分别地被介绍。分层的分类方法能遇见从 1:500,000 为国家主要规模印射到 1:1,000,000 的规模跨度 geomorphologic 的要求。层用作分类指示物,并且能因此根据印射要求被增加并且减少,提供灵活 expandability。 | CHENG Weiming ZHOU Chenghu LI Bingyuan SHEN Yuancun ZHANG Baiping | 2011 | Journal of Geographical Sciences2011，21，5： | 26 |
| 6 | The oasis expansion and eco-environment change over the last 50 years in Manas River Valley, Xinjiang显示文摘The oasis expansion and economic development of the Manas River Valley is one of the most successful examples in Xinjiang. In this paper, the oasis spatial distribution pattern and dynamic change were examined using imageries of Landsat MSS, TM and ETM, land use and topographic maps in six different periods (such as 1949, 1962, 1976, 1989, 1999 and 2001) over the last 50 years in the valley. The oasis expansion process could be divided into two stages according to the annual rate of oasis area increase, the fast oasization stage (from 1949 to 1976) when the oasis area ex-panded from 156.385 km2 in 1949 to 3,639.491 km2 in 1976 because of rapidly increased population and quickly enlarged farmland area; and the urbanization stage (from 1976 to 2001) when the ex-pansion ratio of farmland slowed down, and the urbanization process quickened, the total oasis area reached 5042.440 km2 in 2001. With the continuous expansion of oasis and farmland, a large quantity of river water was drawn into irrigation ditch and plain lakes, so only a small quantity of river water could flow into lakes, as a result, the Manas Lake dried up, salization and basification problems happened in the low-lying oasis region. The natural swamp around the lake was shrunk greatly and biodiversity decreased significantly. The driving force analysis reveals that human activities, such as reclamation and population growth, played a major role in the oasis expansion and ecological dete-rioration in the Manas River Valley. So further efforts should be made to improve the efficiency of water resource utility and adjust layout of the regional agricultural and animal husbandry to keep the sustainable development of oasis economic belt of the northern slope of Tianshan Mts. | CHENG Weiming ZHOU Chenghu LIU Haijiang ZHANG Yang JIANG Yan ZHANG Yichi YAO Yonghui | 2006 | Science China Earth Sciences2006，49，2： | 24 |
| 7 | Research and compilation of the Geomorphologic Atlas of the People's Republic of China (1:1,000,000)显示文摘Geomorphologic maps are one of the most fundamental materials of the natural environment. They have been widely used in scientific research,resource exploration and extraction,education and military affairs etc. An editorial committee was established in 2001 to collect materials for researching and compiling a set of new 1:1,000,000 geomorphologic atlas of China. A digital geomorphologic database was created with visual interpretation from Landsat TM/ETM imageries and SRTM-DEM etc. The atlas compiled from the database was finished. The main characteristics of the atlas are as follows:Firstly,Landsat TM/ETM imageries,published geomorphologic maps or sketches,geographical base maps,digital geological maps,and other thematic maps were collected,which were uniformly geometrically rectified,clipped into uniform sheets,and stored in the foundation database. Secondly,based on the legends of 15 sheets 1:1,000,000 maps published in the 1980s,a geomorphologic classification system was built by combining morphology and genesis types. The system comprised seven hierarchical layers:basic morphology,genesis,sub-genesis,morphology,micro-morphology,slope and aspect,material composition and lithology. These layers were stored in the database during visual image interpretation. About 2000 kinds of morpho-genesis and 300 kinds of morpho-structure were interpreted. Thirdly,the legend system was built,which included color,symbol bases and note bases etc.,compilation standards and procedures were developed,74 sheets of 1:1,000,000 covering all land and sea territories of China were compiled,the 1:1,000,000 geomorphologic atlas of the People's Republic of China was finished and published. The atlas will fill the blanks in national basic scale thematic maps,and the geomorphologic database could be applied widely in many fields in the future. | CHENG Weiming ZHOU Chenghu CHAI Huixia ZHAO Shangmin LIU Haijiang ZHOU Zengpo | 2011 | Journal of Geographical Sciences2011，21，1： | 17 |
| 8 | The Deep-Time Digital Earth program:data-driven discovery in geosciences显示文摘Current barriers hindering data-driven discoveries in deep-time Earth(DE)include:substantial volumes of DE data are not digitized;many DE databases do not adhere to FAIR(findable,accessible,interoperable and reusable)principles;we lack a systematic knowledge graph for DE;existing DE databases are geographically heterogeneous;a significant fraction of DE data is not in open-access formats;tailored tools are needed.These challenges motivate the Deep-Time Digital Earth(DDE)program initiated by the International Union of Geological Sciences and developed in cooperation with national geological surveys,professional associations,academic institutions and scientists around the world.DDE’s mission is to build on previous research to develop a systematic DE knowledge graph,a FAIR data infrastructure that links existing databases and makes dark data visible,and tailored tools for DE data,which are universally accessible.DDE aims to harmonize DE data,share global geoscience knowledge and facilitate data-driven discovery in the understanding of Earth’s evolution. | Chengshan Wang Robert MHazen Qiuming Cheng Michael HStephenson Chenghu Zhou Peter Fox Shu-zhong Shen Roland Oberhansli Zengqian Hou Xiaogang Ma Zhiqiang Feng Junxuan Fan Chao Ma Xiumian Hu Bin Luo Juanle Wang Craig M.Schiffries | 2021 | National Science Review2021，8，9： | 14 |
| 9 | COVID-19: Challenges to GIS with Big Data显示文摘The outbreak of the 2019 novel coronavirus disease(COVID-19)has caused more than 100,000 people infected and thousands of deaths.Currently,the number of infections and deaths is still increasing rapidly.COVID-19 seriously threatens human health,production,life,social functioning and international relations.In the fight against COVID-19,Geographic Information Systems(GIS)and big data technologies have played an important role in many aspects,including the rapid aggregation of multi-source big data,rapid visualization of epidemic information,spatial tracking of confirmed cases,prediction of regional transmission,spatial segmentation of the epidemic risk and prevention level,balancing and management of the supply and demand of material resources,and socialemotional guidance and panic elimination,which provided solid spatial information support for decision-making,measures formulation,and effectiveness assessment of COVID-19 prevention and control.GIS has developed and matured relatively quickly and has a complete technological route for data preparation,platform construction,model construction,and map production.However,for the struggle against the widespread epidemic,the main challenge is finding strategies to adjust traditional technical methods and improve speed and accuracy of information provision for social management.At the data level,in the era of big data,data no longer come mainly from the government but are gathered from more diverse enterprises.As a result,the use of GIS faces difficulties in data acquisition and the integration of heterogeneous data,which requires governments,businesses,and academic institutions to jointly promote the formulation of relevant policies.At the technical level,spatial analysis methods for big data are in the ascendancy.Currently and for a long time in the future,the development of GIS should be strengthened to form a data-driven system for rapid knowledge acquisition,which signifies ts that GIS should be used to reinforce the social operation parameterization of models and methods,especially when providing support for social management. | Chenghu Zhou Fenzhen Su Tao Pei An Zhang Yunyan Du Bin Luo Zhidong Cao Juanle Wang Wen Yuan Yunqiang Zhu Ci Song Jie Chen Jun Xu Fujia Li Ting Ma Lili Jiang Fengqin Yan Jiawei Yi Yunfeng Hu Yilan Liao Han Xiao | 2020 | Geography and Sustainability2020，1，1： | 13 |
| 10 | Rainfall-induced landslide stability analysis in response to transient pore pressure——A case study of natural terrain landslide in Hong Kong显示文摘Transient pore pressure in response to short intense rainfall process plays an important role in shallow landslide occurrence. Using GIS technology, we carry out the rainfall-induced landslide stability analysis in response to transient pore pressure by means of transient and unsaturated rainfall infiltration modeling. A case study is performed on the shallow landslide stability analysis in Hong Kong. Detailed analysis and discussion reached some useful conclusions on the tempo-spatial behavior and characteristics of slope stability response and pore pressure response to typical rainfall process. Comparison analysis is performed on some important issues including landslide stability response in different types of slopes with different hydraulic properties, antecedent rainfall and landslide stability, and the nature of pore pressure response time. These studies might give us an important insight into landslide tringgering mechanism and the hydrological process in response to rainfall, and provide systematic information and evidences for effective risk assessment and warning system establishment. | LAN Hengxing, ZHOU Chenghu C. F. LeeWANG Sijing & WU Faquan State Key Laboratory of Natural Resources and Environmental System, Institute of Geographical Sci-ences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China Department of Civil Engineering, Hong Kong University, Hong Kong, China 3. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China | 2003 | Science China(Technological Sciences)2003，46，z1： | 10 |
| 11 | Alpl prevents bone ageing sensitivity by specifically regulating senescence and differentiation in mesenchymal stem cells显示文摘Mutations in the liver/bone/kidney alkaline phosphatase(Alpl) gene cause hypophosphatasia(HPP) and early-onset bone dysplasia,suggesting that this gene is a key factor in human bone development. However, how and where Alpl acts in bone ageing is largely unknown. Here, we determined that ablation of Alpl induces prototypical premature bone ageing characteristics, including bone mass loss and marrow fat gain coupled with elevated expression of p16^(INK4A)(p16) and p53 due to senescence and impaired differentiation in mesenchymal stem cells(MSCs). Mechanistically, Alpl deficiency in MSCs enhances ATP release and reduces ATP hydrolysis. Then, the excessive extracellular ATP is, in turn, internalized by MSCs and causes an elevation in the intracellular ATP level, which consequently inactivates the AMPKα pathway and contributes to the cell fate switch of MSCs. Reactivating AMPKα by metformin treatment successfully prevents premature bone ageing in Alpl+/-mice by improving the function of endogenous MSCs.These results identify a previously unknown role of Alpl in the regulation of ATP-mediated AMPKα alterations that maintain MSC stemness and prevent bone ageing and show that metformin offers a potential therapeutic option. | Wenjia Liu Liqiang Zhang Kun Xuan Chenghu Hu Shiyu Liu Li Liao Bei Li Fang Jin Songtao Shi Yan Jin | 2018 | Bone Research2018，6，4： | 9 |
| 12 | A systematic review of research studies on the estimation of net primary productivity in the Three-River Headwater Region, China显示文摘三河的 Headwater 区域(TRHR ) ,作为中国的水塔知道,为在中国和很多个东南亚洲国家的许多下游的区域是为国家安全兴趣和地区性的持续发展活动的一个重要生态的躲蔽处。TRHR 是有一个唯一,却典型的高山的植被系统的高举起的、冷环境。网络主要生产率(NPP ) 是能反映自然环境变化和碳预算层次的一个关键植被参数和生态的指示物。给唯一的地理环境和 TRHR 的战略地点,许多学者由使用不同方法估计了 TRHR 的 NPP;然而,这些估计为很多个原因极大地变化。迄今为止,没有纸,考察了并且估计在 TRHR 进行的 NPP 评价研究。在这篇论文,(1 ) 因此,我们在以前的研究的系统的评论在 TRHR 总结了 NPP 评价的相关方法和结果;(2 ) 为在 TRHR 估计 NPP 讨论了存在方法的适用性并且加亮最重要的挑战;并且(3 ) 估计了估计的 NPP 结果。最后,在 TRHR 的 NPP 评价的发展方向被勘探。 | SUN Qingling LI Baolin ZHOU Chenghu LI Fei ZHANG Zhijun DING Lingling ZHANG Tao XU Lili | 2017 | Journal of Geographical Sciences2017，27，2： | 8 |
| 13 | Scale effects of the continental coastline of China显示文摘空间规模是在地理的一个基本问题。海岸线的分数维的特征引起的规模效果成为沿海的地区经理和研究人员的一个普通焦点。在这研究,基于 DEM 和遥感图象,中国的多尺度的大陆人海岸线被提取,分数维的特征被分析。结果如下被显示出。(1 ) 中国的大陆人海岸线适合分数维的模型,并且分数维的尺寸是 1.195。(2 ) 有海岸线的分数维的尺寸的规模效果有重要差别根据高举并且沿着中国的大陆人海岸线的沉淀片断。(3 ) 海岸线的分数维的尺寸根据海岸线类型有重要空间异质。位于 Luanhe 河平原的沙的海岸线的分数维的尺寸是 1.109。位于北江苏平原的泥泞海岸线的尺寸是 1.059,当沿着东南的福建的岩石海岸线的是 1.293 时。(4 ) 岩石海岸线的长度被规模多于泥泞、沙的海岸线的影响。因为海岸线是海的连词,登陆并且通风表面,海岸线规模效果的学习是为关于在 multi-scales 的 air-sea-land 相互作用的研究的科学的底之一。 | SU Fenzhen GAO Yi ZHOU Chenghu YANG Xiaomei FEI Xianyun | 2011 | Journal of Geographical Sciences2011，21，6： | 8 |
| 14 | Regional moment-independent sensitivity analysis with its applications in engineering显示文摘Traditional Global Sensitivity Analysis(GSA) focuses on ranking inputs according to their contributions to the output uncertainty.However,information about how the specific regions inside an input affect the output is beyond the traditional GSA techniques.To fully address this issue,in this work,two regional moment-independent importance measures,Regional Importance Measure based on Probability Density Function(RIMPDF) and Regional Importance Measure based on Cumulative Distribution Function(RIMCDF),are introduced to find out the contributions of specific regions of an input to the whole output distribution.The two regional importance measures prove to be reasonable supplements of the traditional GSA techniques.The ideas of RIMPDF and RIMCDF are applied in two engineering examples to demonstrate that the regional moment-independent importance analysis can add more information concerning the contributions of model inputs. | Changcong ZHOU Chenghu TANG Fuchao LIU Wenxuan WANG Zhufeng YUE | 2017 | Chinese Journal of Aeronautics2017，30，3： | 8 |
| 15 | Climate effects on an inland alpine lake in Xinjiang, China over the past 40 years显示文摘Inland lakes are important water resources in arid and semiarid regions. Understanding climate effects on these lakes is critical to accurately evaluate the dynamic changes of water resources. This study focused on the changes in Sayram Lake of Xinjiang, China, and addressed the effects of climate fluctuations on the inland lake based on long-term sequenced remote sensing images and meteorological data from the past 40 years. A geographic information system (GIS) method was used to obtain the hypsometry of the basin area of Sayram Lake, and estimation methods for evaporation from rising temperature and water levels from increasing precipitation were proposed. Results showed that: (1) Areal values of Sayram Lake have increased over the past 40 years. (2) Both temperature and precipitation have increased with average increases of more than 1.8℃ and 82 mm, respectively. Variation of the water levels in the lake was consistent with local climate changes, and the areal values show linear relationships with local temperature and precipitation data. (3) According to the hypsometry data of the basin area, the estimated lake water levels increased by 2.8 m, and the water volume increased by 12.9×10 8 m3 over the past 40 years. The increasing area of Sayram Lake correlated with local and regional climatic changes because it is hardly affected by human activities. | HuiXia CHAI WeiMing CHENG ChengHu ZHOU ShangMin ZHAO HaiJiang LIU | 2013 | Journal of Arid Land2013，5，2： | 7 |
| 16 | Spatial Autocorrelation Analysis on Regional Economic Disparity of Northeast Economic Region in China显示文摘Popular regional inequality indexes such as variation coefficient and Gini coefficient can only reveal overall inequality, and have limited ability in revealing spatial dependence or spatial agglomeration. Recently some methods of exploratory spatial data analysis such as spatial autocorrelation have provided effective tools to analyze spatial agglomeration and cluster, which can reveal the pattern of regional inequality. This article attempts to use spatial autocorrelation at county level to get refined spatial pattern of regional disparity in Chinese northeast economic region over 2000-2006 (2001 absent). The result indicates that the basic trend of regional economy is an increasing concentration of growth among counties in northeast economic region, and there are two geographical clusters of poorer counties including the counties in western Liaoning Province and adjacent counties in Inner Mongolia, poorer counties of Heihe, Qiqihar and Suihua in Heilongjiang Province. This article also reveals that we can use the methods of exploratory spatial data analysis as the supplementary analysis methods in regional economic analysis. | Li Fei Zhou Chenghu | 2009 | Chinese Journal of Population,Resources and Environment2009，7，2： | 6 |
| 17 | Algebraic encoding scheme for aperture 3 hexagonal discrete global grid system显示文摘Discrete Global Grid Systems(DGGSs) are spatial references that use a hierarchical tessellation of cells to partition and address the entire globe. They provide an organizational structure that permits fast integration between multiple sources of large and variable geospatial data sufficient for visualization and analysis. Despite a significant body of research supporting hexagonal DGGSs as the superior choice, the application thereof has been hindered owing in part to the lack of a rational hierarchy with an efficient addressing system. This paper presents an algebraic model of encoding scheme for the Aperture 3 Hexagonal(A3H) DGGS. Firstly, the definition of a grid cell, which is composed of vertices, edges, and a center, is introduced to describe fundamental elements of grids. Secondly, by identifying the grid cell with its center, this paper proves that cell centers at different levels can be represented exactly using a mixed positional number system in the complex plane through the recursive geometric relationship between two successive levels, which reveals that grid cells are essentially special complex radix numbers. Thirdly, it is shown that through the recursive geometric relationship of successive odd or even levels, the mixed positional number system can also be applied to uniquely represent cell centers at different levels under specific constraint conditions, according to which the encoding scheme is designed. Finally, it is shown that by extending the scheme to 20 triangular faces of the regular icosahedron,multi-resolution grids on closed surfaces of the icosahedron are addressed perfectly. Contrast experiments show that the proposed encoding scheme has the advantages of theoretical rigor and high programming efficiency and that the efficiency of cross-face adjacent cell searching is 242.9 times that of a similar scheme. Moreover, the proposed complex radix number representation is an ideal formalized description tool for grid systems. The research ideas introduced herein can be used to create a universal theoretical framework for DGGSs. | BEN Jin LI YaLu ZHOU ChengHu WANG Rui DU LingYu | 2018 | Science China Earth Sciences2018，61，2： | 5 |
| 18 | Oceanic pycnocline depth retrieval from SAR imagery in the existence of solitary internal waves显示文摘Oceanic pycnocline depth is usually inferred from in situ measurements. It is attempted to estimate the depth remotely. As solitary internal waves occur on oceanic pycnocline and propagate along it, it is possible to retrieve the depth indirectly in virtue of the solitary internal waves. A numerical model is presented for retrieving the pycnocline depth from synthetic aperture radar (SAR) images where the solitary internal waves are visible and when ocean waters are fully stratified. This numerical model is constructed by combining the solitary internal wave model and a two-layer ocean model. It is also assumed that the observed groups of solitary internal wave packets on the SAR imagery are generated by local semidiurnal tides. A case study in the East China Sea shows a good agreement with in situ CTD (conductivity-temperature-depth) data. | YANG Jingsong HUANG Weigen XIAO Qingmei ZHOU Chenghu HSU Mingkuang | 2005 | Acta Oceanologica Sinica2005，24，5： | 5 |
| 19 | ATF4 is directly recruited by TLR4 signaling and positively regulates TLR4-trigged cytokine production in human monocytes显示文摘像使用费的受体(TLR ) 是主人防卫系统的哨兵,它认出很多微生物引起的病原体。主机防卫系统可能是低效的或如果由 TLR 和随后的被触发 TLR 的 cytokine 生产的微生物引起的识别是 deregulated,煽动性的疾病可以发展。激活抄写因素 4 (ATF4 ) , ATF/CREB 抄写因素家庭的一个成员,是参予几个 pathophysiological 过程的一个重要因素。在这份报告,我们发现 ATF4 也涉及调停 TLR 的天生的有免疫力的反应,它参予 TLR4 信号 transduction 并且调停许多 cytokines 的分泌物。我们观察到 ATF4 被激活并且 translocates 到经由 TLR4-MyD88-dependent 小径跟随 lipopolysaccharide (LPS ) 刺激的原子核。另外, cytokine 数组试金证明某关键煽动性的 cytokines 例如 IL-6, IL-8 和 RANTES,被 ATF4 断然调整。我们也证明 c6 月直接绑在 ATF4,从而支持煽动性的 cytokines 的分泌物。一起拿,这些结果显示 ATF4 在被触发 TLR4 的 cytokine 充当一个积极管理者生产。 | Chunyan Zhang Nan Bai Antao Chang Zhuhong Zhang Jing Yin Wenzhi Shen Yaping Tian RongXiang Chenghu Liu | 2013 | Cellular & Molecular Immunology2013，10，1： | 5 |
| 20 | Automatic mapping of lunar landforms using DEM-derived geomorphometric parameters显示文摘Developing approaches to automate the analysis of the massive amounts of data sent back from the Moon will generate significant benefits for the field of lunar geomorphology.In this paper,we outline an automated method for mapping lunar landforms that is based on digital terrain analysis.An iterative self-organizing(ISO)cluster unsupervised classification enables the automatic mapping of landforms via a series of input raster bands that utilize six geomorphometric parameters.These parameters divide landforms into a number of spatially extended,topographically homogeneous segments that exhibit similar terrain attributes and neighborhood properties.To illustrate the applicability of our approach,we apply it to three representative test sites on the Moon,automatically presenting our results as a thematic landform map.We also quantitatively evaluated this approach using a series of confusion matrices,achieving overall accuracies as high as 83.34% and Kappa coefficients(K)as high as 0.77.An immediate version of our algorithm can also be applied for automatically mapping large-scale lunar landforms and for the quantitative comparison of lunar surface morphologies. | WANG Jiao CHENG Weiming ZHOU Chenghu ZHENG Xinqi | 2017 | Journal of Geographical Sciences2017，27，11： | 5 |
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