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Extrapolate well logs based on the constrained interpolation algorithm

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Extrapolate well logs based on the constrained interpolation...

中国科学院地质与地球物理研究所2.08学术年会

作者： Liu Hongwei,Liu Hong,Qin Yueshuang,and Shou Hao 1.Institute of Geology and Geophysics,chinese academy of Sciences,{2. 10002.,china. 2.State Key Laboratory of Geological Processes and Mineral Resources,china university of Geosciences,{2.,100083 3.The Exploratory development Institute of Daqing Oilfield Limited Liability Company,Daqing 163712.china. 4.Research Institute of Exploration and Development of chinese Petroleum,{2. 100083,china.

Based on a detailed analysis of differences between seismic data and well logs, we discuss the problem of matching seismic traces and well logs and present a new matching method based on event search in instantaneous phase which greatly improves seismic *** method is based on flattening events in instantaneous phase to compare the seismic traces to the well log traces with the same *** calculate the coefficients using the singular value decomposition method to extrapolate the well *** a result,the events in the seismic profile are continuous and match well with well *** apply this method to the Mao-2.well in Daqing Oilfield with good results.

关键词： events flattening SVD method instantaneous phase correlation

Numerical study on two circle void flaws in cylinders

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Numerical study on two circle void flaws in cylinders

2.11年全国压电和声波理论及器件应用研讨会

作者： Gang-feng ZHENG~(1,*),Bin WU~2.Cun-fu HE~3 1 College of Materials Science and Engineering,Anhui university of Science and Technology.Huainan 2.2.01,china 2.3 College of Mechanical Engineering & Applied Electronics Technology,{2. university of Technology,{2. 10002.,china

＜正＞In this article,three-dimensional Kirchhoff inverse scattering method is modified to convenient form for a cylindrical specimen that includes three-dimensional defects including two-circle *** measurements are c... 详细信息

关键词： Finite element Kirchhoff approximation Shape reconstruction Scattering

Block modeling and segmentally iterative ray tracing in complex 3D media

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Block modeling and segmentally iterative ray tracing in comp...

中国科学院地质与地球物理研究所2.06学术年会

作者： Tao Xu~1,Guoming Xu~2.Ergen Gao~2.Yingchun Li~2.Xianyi Jiang~3,and Kaiyun Luo~3 1 chinese academy of Sciences,Institute of Geology and Geophysics,State Key Laboratory of Lithosphere Evolution,No.19,Beituchengxi Road,Chaoyang District,{2. 10002.,china. 2.university of Science and Technology of china,School of Earth and Space Sciences,no.96,Jinzhai Road, Anhui Province,Heifei 2.002.,china. 3 Bureau of Geophysical Prospecting,Geophysical Research Institute,CNPC,Zhuozhou,Hebei,china.

We propose using a set of blocks to approximate geologically complex media that cannot be well described by layered *** between blocks are triangulated to prevent overlaps or gaps often produced by other techniques,such as B-splines,and to speed up the calculation of intersection points between a ray and block *** also use a smoothing algorithm to make the normal vector of each triangle continuous at the boundary,so that ray tracing can be performed with stability and *** on Fermat’s principle,we perturb an initial raypath between two points,generally obtained by shooting,with a segmentally iterative ray-tracing(SIRT) *** points on a ray are updated in sequence,instead of simultaneously,because the number of new intersection points may be increased or decreased during the iteration *** improve convergence speed,we update the intersection points by a first-order explicit formula instead of traditional iterative *** transmitted and reflected waves are *** tests demonstrate that the combination of block modeling and segmentally iterative ray tracing is effective in implementing kinematic two-point ray tracing in complex 3D media.

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Is an unusual large enhancement of ionospheric electron density linked with the 2.08 great Wenchuan earthquake?

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Is an unusual large enhancement of ionospheric electron dens...

中国科学院地质与地球物理研究所2.08学术年会

作者： Biqiang Zhao,Min Wang,Tao Yu,Weixing Wan,Jiuhou Lei,Libo Liu, and Baiqi Ning 1 beijing National Observatory of Space Environment,Institute of Geology and Geophysics,chinese {2. of Sciences,beijing,china. 2.Institute of Earthquake Science,china Earthquake Administration, beijing,china. 3 National Center for Space Weather,china Meteorological Administration, beijing,china. 4 Department of Aerospace Engineering Sciences,university of Colorado, Boulder,Colorado,USA.

[1]On 12.May 2.08 at 062. UT a major earthquake M = 8.0 struck Wenchuan County (31.0°N,103.4°E) in southwest *** maximum ionospheric electron density at F peak(NF) recorded an unusual large enhancement during the afternoon-sunset sector by the chinese ionosondes over Wuhan(30.5°N,114.4°E) and Xiamen(2..4°N,12..9°E), which are close to the earthquake *** averaged increase at these two stations is about 2.times on a geomagnetic quiet day,9 May(Kp≤2.,3 days prior to the earthquake,relative to the median value of 1 -12.May,whereas the increase was much less significant over Yamagawa(31.2.N,130.6°E) and Okinawa(2..7°N,12..2.E) in *** the data from the network of 58 global positioning system receivers around china and the global ionospheric map,the variations of the total electron content reveal the region where enhancement persisted for a long period to be within longitudes 90°-130°*** results suggest that this abnormal enhancement is most possibly a seismo-ionospheric signature.

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Health Assessment Indicator System for Larch Plantation in Jin’gouling Forest Farm, Jilin Province

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chinese Forestry Science and Technology 2011年第3期10卷 31-38页

作者： WANG Fang1 ZHENG Xiaoxian1 HU Yang1 LIU Bo2.1. School of Forest, beijing Forestry university, beijing 100083, P. R. china 2. Municipal Bureau of Landscape and Forestry of Dongping County, Dongping 2.1500, P. R. china

For the healthy management of plantation, a health assessment indicator system was designed at forest stand scale for the larch plantation in Jin'ouling Forest Farm, Wangqing Forestry Bureau, Jilin Province. The system consisted of 3 categories—forest structure, external interferences and management objectives, with 15 indicators. The results showed that: 1) the assessment indicator system was scientific and rational for different age groups of larch plantations; 2. both the half-mature larch plantation and mature larch plantation were semi-healthy, while the near-mature plantation was healthy. The commons of all these plantations were structural integrity, little or no pest diseases and managed by appropriate operating activities; 3) the major problems included single tree species and relatively slow growing in the half-mature larch plantations; in the near-mature plantation, the number of grass species was less; and in the farm, the stock volume of mature plantations was below the average. Therefore, the half-mature larch forest should be thinned to improve the growth and the mature forest should be cut in time.

关键词： larch plantation health assessment evaluation index

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海绵微生物生物活性物质的研究进展

天然产物研究与开发 2004年第5期16卷 477-481页

作者：刘丽胡江春王书锦中国科学院沈阳应用生态研究所

海绵独特的摄食、滤食系统使其体内体表富集了大量的微生物 ,这些微生物能够产生多种结构新颖的生物活性物质 ,对海绵微生物的研究正在成为开发海洋药物资源的重要内容之一。本文概述了近十年来对海绵微生物生物活性物质的化学成分和生... 详细信息

海绵独特的摄食、滤食系统使其体内体表富集了大量的微生物 ,这些微生物能够产生多种结构新颖的生物活性物质 ,对海绵微生物的研究正在成为开发海洋药物资源的重要内容之一。本文概述了近十年来对海绵微生物生物活性物质的化学成分和生物活性的研究进展。

关键词：微生物体内生物活性物质海洋药物体表海绵研究进展摄食

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一种基于组通信的数据库复制的实现

计算机科学 2004年第11期31卷 105-108,113页

作者：王勇焦丽梅国家智能计算机研究开发中心北京100080 中国科学院计算技术研究所北京100080 中国科学院研究生院北京100039

基于组通信系统的数据库复制将一些单个的数据库组织成一个逻辑数据库,可以提高其可用性和产量并支持更多用户。中间层数据复制用一种中间层的C/S模式来截取客户端和数据库交互的数据流,将用户请求送到所有节点执行。组通信系统和2.C被... 详细信息

基于组通信系统的数据库复制将一些单个的数据库组织成一个逻辑数据库,可以提高其可用性和产量并支持更多用户。中间层数据复制用一种中间层的C/S模式来截取客户端和数据库交互的数据流,将用户请求送到所有节点执行。组通信系统和2.C被用来保证复制数据库严格的一致性。本文提出了一种面向操作的复制协议和一种面向事务的记录一重放协议。基于组通信系统的发展和国产的DBMS of Kingbase模式,面向操作的复制服务得到了实现。本文的工作表明利用组通信可以在中间层实现透明复制并可以取得较好的性能。

关键词：组通信数据库复制数据库组织工作表事务数据复制 DBMS 服务系统制服

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稀土离子对烟草RuBPcase的抑制作用

中国稀土学报 2001年第4期19卷 362-365页

作者：陈为钧陶冶胡天斗赵贵文中国科学院高能物理所同步室北京100039 中国科学技术大学化学系安徽合肥230026

采用硫酸铵沉淀和SephadexG 2.0 0柱层析分离纯化出烟草RuBPcase ( 1,5 二磷酸核酮糖羧化酶 ) ,并测定了稀土元素离子对酶活性抑制效果。在RuBPcase催化CO2.固定的反应体系中 ,随着稀土元素离子浓度的增加 ,该酶对Mg2.+ 的最大反应速度... 详细信息

采用硫酸铵沉淀和SephadexG 2.0 0柱层析分离纯化出烟草RuBPcase ( 1,5 二磷酸核酮糖羧化酶 ) ,并测定了稀土元素离子对酶活性抑制效果。在RuBPcase催化CO2.固定的反应体系中 ,随着稀土元素离子浓度的增加 ,该酶对Mg2.+ 的最大反应速度 (vmax)不变 ,米氏常数 (km)变大 ,并带有一个抑制剂常数 (ki)的典型竞争性抑制。La3+ ,Ce3+ ,Gd3+ 的ki 分别为 :2.6 3,34 3,2.0 0 (mol·L- 1 ,3种离子与Mg2.+ 对RuBPcase竞争能力的大小顺序为La3+ >Ce3+ Gd3+ 。

关键词：稀土烟草 1,5-二磷酸核酮糖羧化酶抑制作用酶活性

Phylogenetics and evolution of plant Su（var）3-9 SET genes in land plants:a diversity of structures and functions

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Phylogenetics and evolution of plant Su（var）3-9 SET genes ...

江苏省遗传学会第八届会员代表大会暨学术研讨会

作者： Xinyu Zhu~(1,2.,Hongzhi Kong~1,Hong Ma~3,Zhiduan Chen~(*,1) 1 State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,chinese academy of Sciences,{2. 100093,china 2.School of Life Sciences,Nantong university,Nantong 2.6019,china 3 School of Life Sciences,Center for Evolutionary Biology,Fudan university,Shanghai 2.0433,china and Department of Biology,The Pennsylvania State university,university Park PA 16802.USA

＜正＞Background:Plants contain numerous Su（var）3-9 homologues（SUVH） and related（SUVR） genes,some of which await functional *** there have been studies on the evolution of plant Su（var）3-9 SET genes,a systemat...

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