地质模型约束下的地震储层预测技术及其在梨树断陷中的应用

在钻测井约束下,结合梨树断陷有关探井资料和区域性沉积相研究,综合运用调谐频率加强法高分辨率处理技术和基于地震资料的时频分析技术、地震相技术、多属性分析技术及基于层序框架下的地震资料解释技术等,采取拟声波曲线重构地震反演技术和基于调谐频率加强法的高分辨率反演方法等,研究目的层岩性、物性和含油气性。同时,结合基于地震属性分析的人工智能技术的储层物性预测方法,预测砂体的空间分布和几何形态,落实隐蔽圈闭,完成了滚动勘探和开发2个阶段不同井区有利砂体分布规律评价及预测工作。     

Revision of Handbook of Hydrogeology (2nd Edition)

Handbook of Hydrogeology is a professional reference book guiding the work and re-search of hydrogeology and providing enlightenment to hydrogeologists and those working in re-lated fields. This paper introduces the revision and enlargement of Handbook of Hydro-geology (2nd edition) on the basis of its first edition. It gives a brief account of the background, principles, and necessity of revising the handbook. The content, features and application of the handbook are also addressed.     

山东重力场季节性变化特征

利用山东地区2010—2012年6期流动重力测量资料,研究了鲁南网重力场的变化特征。结果表明重力场呈明显的季节性变化,即每年的3月与8月,重力场存在反向变化,变化幅值相近;季节性变化与降水有关。     

Comparison of lipids in organs of the starfish Asterias amurensis associated with different treatments

Lipids were extracted from organs of the starfish Asterias amurensis associated with different treatments(raw-control,boiling and heating),and then analyzed for lipid content,lipid oxidation index,lipid classes and fatty acid composition.Results showed that boiling softened the hard starfish shells,thus facilitating the collection of starfish organs.As compared with raw organs,the boiled organs had lower water content and higher lipid content,possibly due to the loss of water-holding capacity caused by protein denaturation.Both boiling and heating increased the peroxide value(PV),thiobarbituric acid(TBA) value and carbon value(CV) of lipids.Despite slight increases in the content of complex lipids,associated lipid composition had no substantial variations upon boiling and heating.For simple lipids,the content of 1,2-diglyceride decreased in boiled and heated organs,with free fatty acids observed on thin layer chromatography(TLC).However,neither boiling nor heating significantly changed the fatty acid compositions of simple or complex lipids in starfish organs,suggesting that these two treatments had no significant effects on complex lipids in starfish organs.Together,our results indicated that boiling of starfish soon after capture facilitated the handling and extraction of useful complex lipids consisting of abundant glucosylceramide and eicosapentaenoic acid(EPA)-bounded phospholipids.     

Effects of nitrate on nitrite toxicity to Microcystis aeruginosa

The aim of this study was to investigate the effect of nitrate on nitrite toxicity to Microcystis aeruginosa. Short-term uptake experiment revealed nitrate could depress the nitrite active uptake. The long-term experiment of nitrate effects on nitrite toxicity showed a negative relationship between the growth and intracellular nitrite levels of M. aeruginosa. The net nitrite uptake displayed a decline in the range of 0-150 mg NO(3)(-)-NL(-1) and an elevation at 200mg NO(3)(-)-NL(-1), whereas the activities of nitrate reductase (NR) were more sensitive to nitrate than nitrite reductase (NiR). As a result, the total intracellular nitrite levels tended to decrease up to 100 mg NO(3)(-)-NL(-1) then increased at 150-200 mg NO(3)(-)-NL(-1). These results suggested the existence of external nitrate could affect the toxicity of nitrite to alga through changing intracellular nitrite content.     

Electrical Imaging of Impact Structures

Electrical imaging provides important subsurface information for the construction of hypervelocity impact models. We here provide an overview and evaluation of the current electrical imaging methods used in impact cratering studies. Although apparent resistivity models are commonly used in the geoelectrical imaging of impact structures, the reliability of these models has not hitherto been determined. In order to assess these imaging approaches in impact cratering, we investigate for the first time the discrepancies between the apparent resistivity and true resistivity models of an impact structure. To this end, we present (1) a new true resistivity model of the Araguainha impact structure in central Brazil by applying L2-norm inversion to previously published data, (2) apparent resistivity model of the impact structure, and (3) models obtained from different stages of the iterative tomographic inversions. Our results show that changes in vertical resistivity gradient are significantly better defined in the true resistivity models than in the apparent resistivity model. On the basis of these results, we outline a new approach that true resistivity models can be effectively assessed by applying both L1- and L2-norm inversion schemes together with the monitoring of intermediate models from iterative inversion. The results of our study highlight the importance of tomographic inversion of resistivity data in impact cratering studies, and they provide a data modeling framework and foundation for cost-effective subsurface imaging of impact structures in the future.     

云南农村土木结构房屋有限元抗震分析

根据2007年6月3日宁洱6.4级地震现场调查结果,对破坏较严重的土坯房建立了地震分析模型。对不同的开间、进深及檐口高的房屋,输入了3类场地超越概率为63%及超越概率为3%的地震波进行了有限元抗震分析。结果表明:墙厚影响不大,墙高的影响较大,墙高增加,破坏性增加;因此建议在满足使用功能的前提下,不增加墙厚,而减少层高对抗震更为有利,最后提出了相应的抗震加固措施。     

Design of the HUV based on the airplane's principles

结合固定翼飞机与潜器设计原理设计了一种密度大于水的潜器——重水潜器,它利用机翼升力平衡剩余重量,外形就像固定翼飞机.由理论分析可知在有效载荷和航行速度相同的情况下重水潜器较常规潜器的体积有明显减小,而以中高速航行时重水潜器阻力优势明显.根据固定翼飞机与潜器设计原理相结合的设计方法制作的重水潜器样机进行水池试航时顺利完成直航、水平回转、爬升、下潜等规定动作,并表现出良好的稳定性和操纵性,从而证明了该设计方法的可实现性.     

一篇具有前瞻性和透视力的国家咨询报告

2008～2010年,是中国交通建设的高潮时期,几万亿的投资正在以前所未有的超大规模建设高铁、机场、大型深水泊位、高速公路等。有关部门提出3～5a内要建成以“四纵四横”为骨架的高速铁路网,“引领中国全面进入高铁时代”;一些省区市正在掀起以大城市至郊区中小城市的城际铁路为标志的铁路建设“新高潮”;     

下翼缘摩擦式自定心钢框架梁柱节点抗震性能的数值模拟

介绍了一种新型的铜框架梁柱节点形式,其中预应力钢绞线提供了结构在地震作用下的复位功能（自定心）,设置在梁端下翼缘的摩擦件则为结构提供了耗能能力;介绍了下翼缘摩擦式自定心钢框架粱柱节点的构造和工作原理,以节点的低用反复加载试验结果为依据,利用面向对象的开放式计算程序OpenSees建立了节点的数值模型,并侧重于模拟节点在地震作用下的张开/闭合、自定心、摩擦耗能以及螺栓受剪等特性。由计算结果与试验结果对比可知,所建立的数值模型对节点的抗震性能具有良好的模拟效果。