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1287篇 您的检索式:作者名="LAN L"
    题名 作者 年代 出处 被引量
1Langerin在Langerhans细胞组织细胞增生症和非Langerhans细胞组织细胞性疾病中的表达显示文摘Lan S K Chu P G Weiss L M 黄文斌(摘译) 2008临床与实验病理学杂志2008,24,5:23
2Carbon isotopic composition of Early Triassic marine carbonates, Eastern Sichuan Basin, China显示文摘As the interval following the biggest Phanerozoic mass extinction at the end of Permian, the Early Triassic is characterized by an immature, poorly functioned ecosystem.The effects of these extreme environmental conditions can be mirrored by the changes in the δ13C record of marine carbonates.However, the details about the carbon isotopic composition and evolution of the Early Triassic seawater remain poorly understood.A dataset of new δ13C and δ18O values as well as selected major and trace element data (including concentrations of CaO, MgO, Mn, and Sr) was obtained from 113 marine carbonate samples collected in Eastern Sichuan Basin.The isotopic and elemental data are used to evaluate effects of thermochemical sulfate reduction on δ13C.The δ13C values of a few samples affected by thermochemical sulfate reduction were corrected.By combining carbonate δ13C results in our investigated sections, we constructed a composite curve of the Lower Triassic.The results reveal a δ13C anomaly of carbonate rocks throughout the Early Triassic, accompanied by some rapid jumps and falls, such as those from approximately -2‰ to the extremely high value of 8‰ within a period of about 5 Ma.The Early Triassic δ13C profile derived from Eastern Sichuan Basin shows a close correspondence with Guandao section in Guizhou Province, whereas it yields an excursion pattern differing from Chaohu section in Anhui Province of the Lower Yangtze region (with the δ13C value from the minimum around -6‰ to the maximum near 4‰).The higher δ13C values and the positive carbon isotope excursions in the Lower Triassic from Eastern Sichuan Basin were most likely a consequence of the principal environmental change that may include: (1) the barren land surface due to the absence of vegetation, (2) the loss of diverse marine invertebrate groups and marine carbonates, (3) the thriving of bacteria, algae and methanogenus in ocean ecosystems, and (4) the local effect of the repositories of isotopically light carbon occurred in the form of methane hydrates.This process ended at the Early-Middle Triassic boundary, which indicates that the biotic recovery started at the end of the Lower Triassic.The terrestrial vegetation and marine invertebrates, as the regulators for carbon cycle, are irreplaceable and demand strong protections.HUANG SiJing HUANG KeKe LÜ Jie LAN YeFang 2012Science China Earth Sciences2012,55,12:18
3The relationship between dolomite textures and their formation temperature: a case study from the Permian-Triassic of the Sichuan Basin and the Lower Paleozoic of the Tarim Basin显示文摘Study of dolomite texture can contribute to understanding the process of dolomitization. This research reports textures and homogenization temperatures of dolomites from the Permian–Triassic strata in the Sichuan Basin and the Lower Paleozoic strata in the Tarim Basin, which provided insights into relationships between dolomite textures and their formation temperatures. Our results are summarized as follows: 1) dolomites with well-preserved texture indicate low dolomitization temperature. However, in certain diagenetic environments, the hydrothermal dolomitization may completely or partially preserve the original texture of dolomites. 2) The formation temperatures of non-planar dolomites are always higher than those of planar dolomites. 3) The formation temperatures of dolomite cements are generally higher than those of replacive dolomites. 4) Although the formation temperatures of saddle dolomite cements have a wide range, they show higher values than those of the planar subhedral to euhedral dolomite cements. Thus, saddle dolomites could generally be an indicator of high precipitation temperature. 5) The fluid Mg/Ca ratio is another element controlling dolomite morphology. Micritic dolomites, which precipitate from hypersaline fluids with a high Mg/Ca ratio in a subaerial environment could also have features of non-planar anhedral crystal shape because of rapid nucleation and crystallization during dolomitization.Huang Sijing Huang Keke Lü Jie Lan Yefang 2014Petroleum Science2014,11,1:9
4Runoff of the upper Yellow River above Tangnag: characteristics, evolution and changing trends显示文摘Runoff and its evolution, based on hydrometeorological data from surface measurement stations, are analyzed for the upper reaches of the Yellow River above Tangnag. Some mathematical statistical models, for example, Period Extrapolation-Gradual Regression Model, Grey Topology Forecast Model and Box-Jinkins Model, are applied in predicting changing trends on the runoff. The analysis indicates that the runoff volume in the upper Yellow River above Tangnag is ending a period of extended minimum flows. Increasing runoff is expected in the coming years.LAN Yong-chao1, KANG Er-si1, MA Quan-jie2, ZHANG Ji-shi1, CHEN Ren-sheng1 (1. Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China 2. Hydrology and Water Resources Bureau of the Upper Yellow River Basin, L 2001Journal of Geographical Sciences2001,11,3:5
5BeiDou Integrated Disaster Reduction Application Platform显示文摘To better improve the emergency communication and location-based services of disaster information reporting network for serious natural disaster emergency response and relief,the national natural disaster reduction application platform based on BeiDou navigation satellite system is constructed.The administrative distributed platform is integrated with BeiDou positioning and multiple communication ways so as to achieve main disaster reduction application services,including disaster information acquisition and monitoring,emergency relief for trapped people,on-site emergency relief command service,relief supplies' transportation monitoring,and disaster information publishing service.By the platform,serious disaster information reporting time may be reduced to one hour and the emergency decision-making information service for serious natural disasters can be effectively improved,and it will be helpful to provide technical references for the industrial application and promotion of BeiDou integrated disaster reduction.Lü Xuefeng LIAO Yongfeng LI Bo DENG Lan 2015China Communications2015,12,8:3
6胫骨平台骨折采用可注射磷酸钙骨水泥治疗显示文摘胫骨平台骨折采用磷酸钙骨水泥治疗后的继发复位丢失率7%~33%。Lysholm评分优良率为57%~81%。两篇小样本量的回顾性群组研究表明:与拱形钢板内固定植骨相比较,使用磷酸钙骨水泥治疗能缩短手术时间。在复位丢失率方面,是否使用磷酸钙骨水泥比植骨更具优势还不确定。这就需要进行大样本量的严格对照研究,来确定骨修复系统(SRS)的安全、有效及是否更优于植骨术。lan Harris David L Helfet 2008中华创伤骨科杂志2008,10,1:3
7A 3D Geological Model Constrained by Gravity and Magnetic Inversion and its Exploration Implications for the World-class Zhuxi Tungsten Deposit, South China显示文摘The Zhuxi tungsten deposit in Jiangxi Province,South China,contains a total W reserve of about 2.86 Mt at an average grade of 0.54 wt%WO3,representing the largest W deposit in the world.Numerous studies on the metallogeny of the deposit have included its timing,the ore-controlling structures and sedimentary host rocks and their implications for mineral exploration.However,the deep nappe structural style of Taqian-Fuchun metallogenic belt that hosts the W deposit,and the spatial shape and scale of deeply concealed intrusions and their sedimentary host rocks are still poorly defined,which seriously restricts the discovery of new deposits at depth and in surrounding areas of the W deposit.Modern 3 D geological modeling is an important tool for the exploration of concealed orebodies,especially in brownfield environments.There are obvious density contrast and weak magnetic contrast in the ore-controlling strata and granite at the periphery of the deposit,which lays a physical foundation for solving the 3 D spatial problems of the ore-controlling geological body in the deep part of the study area through gravity and magnetic modeling.Gravity data(1:50000)and aeromagnetic data(1:50000)from the latest geophysical surveys of 2016-2018 have been used,firstly,to carry out a potential field separation to obtain residual anomalies for gravity and magnetic interactive inversion.Then,on the basis of the analysis of the relationship between physical properties and lithology,under the constraints of surface geology and borehole data,human-computer interactive gravity and magnetic inversion for 18 cross-sections were completed.Finally,the 3 D geological model of the Zhuxi tungsten deposit and its periphery have been established through these 18 sections,and the spatial shape of the intrusions and strata with a depth of 5 km underground were obtained,initially realizing―transparency‖for ore-controlling bodies.According the analysis of the geophysical,geochemical,and geological characteristics of the Zhuxi tungsten deposit,we discern three principles for prospecting and prediction in the research area,and propose five new exploration targets in its periphery.YAN Jiayong LÜ Qingtian QI Guang FU Guangming ZHANG Kun LAN Xueyi GUO Xin WEI Jin LUO Fan WANG Hao WANG Xu 2020Acta Geologica Sinica(English Edition)2020,94,6:3
8苄基异喹啉化合物Mollinedine的抗实验性心律失常作用显示文摘Mollinedine(Moll)5mg/kg,iv可显著提高恒速iv哇巴因诱发豚鼠心律失常的用量;显著降低大鼠iv CaCl2的死亡率;预防氯仿引起小鼠心室纤颤的发生;对抗大鼠心肌缺血复灌引起的心律失常;但对iv乌头碱诱发大鼠心律失常的作用无效。小鼠恒速iv Moll随剂量增加,心电图PR间期、QRS明显延长。Moll 5mg/kg iv能降低麻醉大鼠的收缩压、舒张压,左心室压、左室压的变化速率。降压与抑制心肌收缩力作用时间较短,很快可恢复到给药前水平。由此说明,Moll具有抗实验性心律失常作用。胡国胜 钱家庆 Jose A. Lpez Youssef Aly Lan K.Wong Paul L.Schiff Jr 1990同济医科大学学报1990,19,1:2
9Automatic Placement of GIS Vector Map Annotation in Area Feature by Long Diagonal显示文摘This paper discusses the placement of Chinese annotation from point of view of graphics. Area Feature is classified as simple polygon, complex polygon and special polygon. For simple ones, annotations are placed along the longest edge. For complex ones, firstly the polygon are simplified according to close points, then the longest diagonal is gotten by comparing length, lastly, annotations are placed along long diagonal. For special ones, the polygon are partitioned into several parts by a certain rule for getting their sub\|diagonals, then their annotation are placed by means of the second.LAN Xiaoji JIANG Yongfa Lü Guonian DENG Huamei 2005Geo-Spatial Information Science2005,8,4:2
10Douglas gemmill: determining fabrication orientations for rapid prototyping with stereolithography apparatus显示文摘Lan P T Chon S Y Chen L L 1997Computer-Aided Design1997,29,1:2
11The application of SHRIMP to Phanerozoic geochronology: a critical appraisal of four zircon standards显示文摘Lance P Black Sandra L Kamo lan S Williams 2003Chemical Geology2003,200,:1
12显示文摘Chen L C Hsu C Y Lan W H 2003Solid-State Electronics2003,47,:1
13Characterization of polymorphisms of transferrin receptor and their association with susceptibility to ETEC F4ab/ac in pigs 显示文摘WANG Y REN J LAN L 2007J Anim Breed Genet2007,124,4:1
14Public-private mix for improved TB control in Ho Chi Minh City,Vietnam:an assessment of its impact on case detection显示文摘 Lan NT L(o)nnroth K 2003Int J Tuberc Lung Dis2003,7,5:1
15A high performance intermediate temperature fuel cell based on a thick oxide-carbonate electrolyte显示文摘ZHANG L LAN R XU X el al 2009Journal of Power Sources2009,194,2:1
16Linear N-Point camera pose determination显示文摘QUAN L LAN Zhong-dan 1999IEEE Transactions on Pattern Analysis and Machine Intelligence1999,21,7:1
17Hypoxia-inducible factor 1 and VEGF upregulate CXCR4 in glioblastoma: implications for angiogenesis and glioma cell invasion 显示文摘Zaqzaq D Lukyanov Y Lan L 2006Lab Invest2006,86,12:1
18Hematotoxicity in workers exposed to low levels of benzene 显示文摘Lan Q Zhang L Li G 2004Science2004,306,:1
19Association of the interleukin-2 polymorphisms with interleukin-2 serum levels and risk of ha- sopharyngeal carcinoma显示文摘Wei Y S Lan Y Zhang L 2010DNA Cell Biol2010,29,7:1
20Viable counts,characteristic evaluation for commercial lactic acid bacteria products 显示文摘LAN WH HWANG C F CHEN L W 2006Food Microbiol2006,23,1:1
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