油气藏开发阶段储层地质模型的建立及优选方法

针对目前国内油气藏开发阶段储层地质建模存在的问题,提出了基于模型概率储量分析及生产历史拟合的模型建立及优选方法。该方法首先综合应用测井、地质、开发动态等研究成果,以相控建模思路为指导,分步建立构造模型、沉积相模型以及沉积相控制下的储层参数模型。重点分析了影响储层地质建模的不确定因素,并采用蒙特卡罗模拟对随机变量进行取值,得到多个模型实现并对其进行储量计算,优选一系列地质模型。最后对所优选的模型进行生产历史拟合,通过区块累产气量与实际生产数据的均方根误差分析,选取与实际生产数据最为符合的模型作为最终的模型。通过对榆林气田陕215井区北部山西组2段的地质模型的建立及评价可知,该方法适合油气藏开发阶段的地质模型重建,输出模型能更好地反映油气藏实际并能较好的应用于油气藏数值模拟。     

A simultaneous test of unit root and level change

Testing the existence of unit root and/or level change is necessary in order to understand the underlying processes of time series. In many studies carried out so far, the focus was only on a single aspect of unit root and level change, therefore limiting a full assessment of the given problems. Our study aims to find a solution to the given problems by testing the two hypotheses simultaneously. We derive the likelihood ratio test statistic based on the state space model, and their distributions are created by the simulation method. The performance of the proposed method is validated by simulated time series and also applied to two Korean macroeconomic time series to confirm its practical application. This analysis can provide a solution to determine the underlying structure of arguable time series. Copyright © 2009 John Wiley & Sons, Ltd.     

正态分布根方差的估计及其应用

用四分位极差的方法估计正态分布的根方差,研究了子样四分位极差及根方差估计的密度函数,并结合实例,说明了四分位极差估计具有稳健性.     

异丁苯丙酸对绿豆下胚轴插条生根的影响

异丁苯丙酸能显著促进绿豆下胚轴生根,增加根数和根干重     

论船山《大学》诠释的义理新路向

船山把明德新民定位在君德、化民成俗的关系来阐发《大学》一书义理,即是说新民必本于＂已明之君德＂,除此之外化民成俗还必须有齐治平功夫。因此船山对《大学》全书的诠释就具有明显的政治哲学意味。     

植物硝酸盐转运蛋白功能及表达调控研究进展

植物硝酸盐转运蛋白不仅能够吸收、运转硝态氮,而且在植物其他生理过程中也发挥重要作用.重点介绍了硝酸盐转运蛋白在氮素吸收运转、硝酸盐积累、侧根发育、激素运转以及逆境响应调控等方面的最新研究进展,并概括了硝酸盐转运蛋白的表达调控模式.     

Alterations in phosphoproteome under salt stress in Thellungiella roots

High salinity stress is a major environmental factor that limits plant’s distribution and productivity. An Arabidopsis-related halophyte, Thellungiella halophila, is an emerging model system used for plant abiotic stress tolerance research. Previous studies have suggested that protein phosphorylation has a crucial role in the high salinity response in plants. However, the phosphoproteome differential expression under high salinity stress in halophytes has not been well studied. In this report, phosphoproteome differential expression was analyzed under high salinity stress in Thellungiella roots. Twenty-six putative phosphoproteins were found to have changed expression pattern at the post-translational level. Twenty of these were identified by mass spectrometric analysis, including 18 upregulated and two downregulated phosphoproteins. These proteins were involved in a variety of cellular processes, such as signal transduction, ROS detoxification, energy pathway, protein synthesis and protein folding. While most of these salt-responsive putative phosphoproteins are known salt-stress-related proteins, some of them have not been previously reported. Our results provide not only new insights into salt stress responses in Thellungiella but also a good foundation for further investigation of these high salinity-regulated phosphoproteins.     

山楂根的化学成分分离和结构鉴定

研究中药山楂根中的化学成分.利用硅胶柱、聚酰胺柱、葡聚糖LH-20柱色谱技术进行分离和纯化,根据理化性质以及UV,IR,ESI-MS,1H-NMR,13CNMR等波谱数据分析鉴定结构.从山楂根中分离鉴定了4种化合物,分别为化合物(Ⅰ)5,7,4'-三羟基黄酮(芹菜素)、化合物(Ⅱ)2,3,4,6-四甲氧基-7-羟基二苯并呋喃、化合物(Ⅲ)β-胡萝卜苷、化合物(Ⅳ)β-谷甾醇.     

深海高清摄像系统及多金属结核图像处理与统计

根据海底可视化技术对工作水深和图像清晰度的要求,研制了一套6 000 m级深海摄像系统;并应用该系统进行了基于图像处理的多金属结核的矿产普查分析。深海摄像系统水下拖体包括两路高清摄像机、一路照相机、水下定位装置和传感器,信号通过嵌入式系统压缩经过光电复合缆传输到甲板并显示在上位机软件。通过对图像的灰度化处理、二值化处理和数学形态学处理,完成图像的分割与修正,计算图像中某区域多金属结核的面积;该系统在大洋36航次中获得了成功应用,系统工作稳定、拍摄视频清晰度高,圆满完成深海地质调查任务。     

一个算术函数和Smarandache无理根筛数列的性质

设p为素数,ep(n)表示n中包含素数p的最大指数.主要研究ep(n)作用在无理根筛数列上的均值性质,并给出一个有趣的渐近公式.