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Reconstruction of paleo river systems and distribution of sedimentary facies of Shanxi and lower Shihezi formations in southern Ordos basin

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Journal of China University of Mining and Technology 2008年第2期18卷 241-244页

作者： wang chao-yong wang Ze-cheng wang Ji-lin BAO Yuan HU Xiu-mei School of Mineral Resources ＆ Earth Science China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China Petroleum Exploration and Development Research Institute PetroChina Beijing 100083 China

The study area is located in the south of Huanxian county,in Yan'an and Puxian counties and to the north of Xi'*** Shanxi and lower Shihezi formations are important gas-bearing *** our analysis of the direction of rivers,the contents of stable heavy minerals and of feldspar of palaeo river systems,the study area is divided into six palaeodrainage patterns corresponding to six feldspar regions and six sedimentary facies *** this basis,the distribution of sedimentary facies was also *** the Shanxi stage,a delta front was deposited in the Huanxian region and delta plains and fronts were deposited in the Pingliang,Chunhua-Yaoxian and Hancheng-Chengcheng *** the Yan'an-Daning region,only a delta front was *** distribution of sedimentary facies in the earlier Shihezi stage originated from the Shanxi stage.A delta front was developed in the Huanxian region while a delta plain and front developed in the Pingliang-Zhenyuan region during the same *** originated only in the Zhenyuan-Huanxian-Huachi-Zhengning and Daning-Jixian *** analytical method shows that different palaeodrainage patterns can be effectively distinguished in order to forecast sedimentary facies.

关键词： Ordos basin Shanxi formation lower Shihezi formation sedimentary facies palaeodrainage patterns

Effects of priming treatments on germination and biochemical characteristics of Pinus bungeana seeds

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Forestry Studies in China 2012年第3期14卷 200-204页

作者： GUO Su-juan wang yong-chao wang Wen-shu Key Laboratory for Silviculture and Conservation of the Ministry of Education Beijing Forestry UniversityBeijing 100083P.R.China

This experiment was conducted to evaluate the effect of seed priming on the germination and physiology of Pinus bungeana seeds. Seeds were treated by hydropriming with distilled water, halopriming with potassium nitrate （KNO3） at -0.3, -0.6, -1.2 MPa respectively （untreated dry seeds were taken as control）. Properties of seed germination and physiology were determined and the effect of hydro- and halopriming on germination and physiology ofP. bungeana seeds were investigated. The results showed that, compared with control, each priming treatment had increased the germination percentage （GP） and germination index （GI）, shortened the mean germination time （MGT） and the time required for 50% of the seeds to germinate （Gs0）. Primed P. bungeana seeds significantly decreased the relative conductivity and the amount of malondialdehyde （MDA）. Of all the treatments applied to seeds of P. bungeana, halopriming at -0.3 MPa KNO3 produced the highest GP （65.0%） and the shortest MGT （l 8.8 d） and Gs0 （18.2 d）.

关键词： Pinus bungeana priming germination MDA

Relationship of hydrocarbon and source-rock in Nos.3-5 tectonic belts of the Lenghu area,northern Qaidam Basin

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Mining Science and Technology 2009年第6期19卷 796-799页

作者： wang chao-yong ZHANG Ming YIN Cheng-ming JIANG Bo BAO Yuan School of Resources and Earth Science China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China Qinghai Exploration and Petroleum Research Institute Sinopec Dunhuang Gansu 736202 China

Based on analyses of the components of crude oil hydrocarbons and carbon isotopes,the content of normal alkane decreased from 49.00% to 20.10% when moving from the No.3 to No.5 tectonic belt of the Lenghu area of the Qaidam Basin,while cycloalkanes increased from 30.00% to 52.20% and aromatic and branch chain alkanes increased gradually as well. The maturity of sterane in crude oil is higher than that of its source-rock,which shows that the hydrocarbons were generated from a deep source-rock of high maturity around the tectonic belts of the Lenghu area. The analysis of the characteristics of carbon isotopes also shows that these isotopes of hydrocarbon compounds in the No.4 and No.5 tectonic belt are apparently heavier than those in the No.3 belt. The results of our research show that the hydrocarbons in the No.3 tectonic belt are mainly from a relatively rich sapropelic substance,while the hydrocarbons in the No.4 and No.5 tectonic belt originated mainly from organic matter of a relatively rich humic type substance.

关键词： Qaidam Basin Jurassic carbon isotope sapropel humus

STOCHASTIC ANALYSIS MODEL FOR RIVER WATER QUALITY AND ITS APPLICATION

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Journal of Hydrodynamics 1999年第3期11卷 89-97页

作者： wang chao, Li yong Department of Environmental Engineering, Hohai University, Nanjing 210024, P.R.China (Receied Nov.17,1998)

This paper describes the development and application of a new mathematical technique to include stochasticity in environmental models. The techniques are studied to develop stochastic analysis model of the CBOD NBOD DO equations for predicting the river water quality. The CBOD NBOD DO equations are expanded to include stochastic terms. Stochastic terms are separated from non fluctuating terms, and the resulting set of equations is solved simultaneously. Solutions are used to calculating the integral solutions and the distribution moments of the state variables. The moments are used in conjunction with the Fokker Planck equation to produce an analytical solution for the probability density functions of the dependent variables. Because the approach produces analytical solutions, it offers greater flexibility than a Monte Carlo approach in treating complex environmental situations. The model is used to calculate water quality for the Qingao river. The calculated results are in good agreement with the Monte Carlo model and field data.

关键词： stochastic analysis distribution moments probability density functions variance covariance distribution functions water quality model

Aquaporins as potential drug targets

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Acta Pharmacologica Sinica 2006年第4期27卷 395-401页

作者： Fang wang Xue-chao FENG yong-ming LI Hong YANG Tong-hui MA~2 Membrane Channel Research Laboratory,Northeast Normal University,Changchun 130024,China Membrane Channel Research Laboratory Northeast Normal University Changchun China

The aquaporins(AQP)are a family of integral membrane proteins that selectivelytransport water and,in some cases,small neutral solutes such as glycerol *** mammalian AQP have been molecularly identified and localized tovarious epithelial,endothelial and other *** studies of transgenicmouse models of AQP knockout,mutation,and in some cases humans with AQPmutations have demonstrated essential roles for AQP in mammalian physiologyand pathophysiology,including urinary concentrating function,exocrine glandu-lar fluid secretion,brain edema formation,regulation of intracranial and intraocu-lar pressure,skin hydration,tat metabolism,tumor angiogenesis and cell *** studies suggest that AQP may be potential drug targets for not only newdiuretic reagents for various forms of pathological water retention,but also tar-gets for novel therapy of brain edema,inflammatory disease,glaucoma,obesity,and ***,potent AQP modulators for in vivo application remain to bediscovered.

关键词： aquaporins membrane water permeability fluid transport mutation gene knockout gene function human disease drug discovery

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一种基于文本互信息的金融复杂网络模型

物理学报 2018年第14期67卷 264-274页

作者：孙延风王朝勇吉林大学计算机科学与技术学院长春130012 吉林工程技术师范学院信息工程学院长春130021

复杂网络能够解决许多金融问题,能够发现金融市场的拓扑结构特征,反映不同金融主体之间的相互依赖关系.相关性度量在金融复杂网络构建中至关重要.通过将多元金融时间序列符号化,借鉴文本特征提取以及信息论的方法,定义了一种基于文本互... 详细信息

复杂网络能够解决许多金融问题,能够发现金融市场的拓扑结构特征,反映不同金融主体之间的相互依赖关系.相关性度量在金融复杂网络构建中至关重要.通过将多元金融时间序列符号化,借鉴文本特征提取以及信息论的方法,定义了一种基于文本互信息的相关系数.为检验方法的有效性,分别构建了基于不同相关系数(Pearson和文本互信息)和不同网络缩减方法(阈值和最小生成树)的4个金融复杂网络模型.在阈值网络中提出了使用分位数来确定阈值的方法,将相关系数6等分,取第4部分的中点作为阈值,此时基于Pearson和文本互信息的阈值模型将会有相近的边数,有利于这两种模型的对比.数据使用了沪深两地证券市场地区指数收盘价,时间从2006年1月4日至2016年12月30日,共计2673个交易日.从网络节点相关性看,基于文本互信息的方法能够体现出大约20%的非线性相关关系;在网络整体拓扑指标上,本文计算了4种指标,结果显示能够使所保留的节点联系更为紧密,有效提高保留节点的重要性以及挖掘出更好的社区结构;最后,计算了阈值网络的动态指标,将数据按年分别构建网络,缩减方法只用了阈值方法,结果显示本文提出的方法在小世界动态和网络度中心性等指标上能够成功捕捉到样本区间内存在的两次异常波动.此外,本文构建的地区金融网络具有服从幂律分布、动态稳定性、一些经济欠发达地区在金融地区网络中占据重要地位等特性.

关键词：经济物理学文本互信息最小生成树阈值网络

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柴北缘石泉滩和冷湖三号储层特征对比研究

中国矿业大学学报 2007年第6期36卷 837-842页

作者：屈争辉姜波王超勇中国矿业大学资源与地球科学学院江苏徐州221116

为了查明柴达木盆地北缘石泉滩与冷湖三号地区位置毗邻,储层产油性却相差甚远的原因.运用沉积岩石学和储层研究的原理和方法,对石泉滩和冷湖三号地区下侏罗统小煤沟组储层,分别从沉积相、岩矿组成、岩石结构、孔隙结构、成岩作用和物性... 详细信息

为了查明柴达木盆地北缘石泉滩与冷湖三号地区位置毗邻,储层产油性却相差甚远的原因.运用沉积岩石学和储层研究的原理和方法,对石泉滩和冷湖三号地区下侏罗统小煤沟组储层,分别从沉积相、岩矿组成、岩石结构、孔隙结构、成岩作用和物性特征等方面进行对比研究.结果表明,石泉滩地区储层砂体为扇三角洲平原沉积,岩石刚性碎屑含量高、属孔隙式胶结、具较好的孔隙结构特征、曾受强压实和溶蚀作用、主要类属于中高孔—低渗储层.总的来说,含油性能要优于冷湖三号地区,但由于砂体厚度、构造活动和地层接触关系等诸多因素的影响,在产油方面却不及冷湖三号地区.

关键词：柴北缘储层扇三角洲沉积特征物性