广覆式生烃理念在辽河东部凸起油气成藏中的应用

从烃源岩地层展布特征、生烃特征及影响生烃因素等方面分析辽河东部凸起古生界烃源岩,指出石炭—二叠系的煤系地层具有广覆式生烃特点,为油气藏的形成提供了丰富的源岩基础。从生储盖组合关系的角度将东部凸起油气藏类型划分为新生古储、自生自储和上生下储3种类型。油气成藏主控因素有2个:一是距离源岩较近的砂岩储层最易成藏;二是断裂相对不发育的区带使早期形成油气藏更易于保存。     

禅宗祖庭文化:内涵、核心与传承

祖庭是中国禅宗发展的基地,是佛教中国化的活水源头。研究与弘扬流传千年的中国禅宗祖庭文化具有深远的历史与现实意义。从类别、内涵、层次等梳理了禅宗祖庭、禅宗祖庭文化的概念,提炼出禅宗祖庭文化的核心,提出以开放与宽容引导禅宗祖庭文化的当代传承实践。     

Rates, sample sizes, and the neutrality hypothesis for electrophoresis in evolutionary studies.

It is shown that electrophoretic genetic distance estimates are highly correlated with albumin immunological distances between the same pairs of species. The bimodality of rates of electrophoretic differentiation at various loci is then documented and the electrophoretic clocks involved are calibrated. The differences between the systematics and population genetics uses of electrophoretic data are then discussed. Finally, a direct electrophoretic test of the neutral alleles hypothesis is presented and exemplified on a set of Thomomys bottae-umbrinus data.     

北宋家庙、祠堂与谱牒之考论

家庙祭祀和谱牒一直以来都是贵族的特权。但在北宋,呈现出平民化特征,出现了民间家庙祭祀和私谱。文章主要从两者之间的关系探讨民间家庙和私谱出现原因及影响,如形成了新型的宗法组织,国家政治权力的下移和孝文化的加强。     

新疆马朗凹陷油气二次运移模式及其勘探意义

针对三塘湖盆地马朗凹陷的石油地质特征,在石油地质分析化验资料及研究成果的基础上,根据油气二次运移的一般模式特征,采用动、静态结合、单项与多项结合的研究方法分析油气二次运移特征。结果表明,上二叠统芦草沟组泥质烃源岩在晚侏罗世开始大量成熟排烃;具有早白垩世末期和晚白垩世末期两次成藏关键时期;以断层、不整合面、裂缝与连通性地层为运移通道,以垂向运移、短距离运移、源内聚集为主,侧向运移为辅的油气运聚特征。油气二次运移模式表现为:中、新生界以背斜、断背斜、岩性型聚集模式为主,上古生界以断块、断阶、地层型聚集模式为主。研究成果经实践证明在勘探中具有重要的指导性。     

大气海洋油气质点受力分析

从平面入手 ,讨论了地球球面质点在绕太阳运行过程中的受力情况 ,并推得球面质点所受各力的表达式 ,讨论了各力的函数关系及其变化性质 ,对有关各力进行比较归类 ,指出了各力的适应性及存在问题。展望了各力在大气、海洋、油气、板块等运动研究方面的应用前景。     

安装制作工具Inno Setup及其在VC++工程中的应用

VC 工程开发完成时必须制作安装文件,Inno Setup是一个免费的、公开源码的安装制作工具,同时提供了相应的使用方法.文中针对Inno Setup打包VC 工程在安装VC 系统支持文件、ODBC数据源配置、Ac-tiveX控件注册等方面的问题,进行了详细研究并给出了解决方法.     

萍乡市祠庙与民间文献文化资源保护现状调查报告

萍乡地处吴头楚尾,楚文化、赣文化、吴文化和客家文化在这里交融交汇,拥有丰富而独特的文化遗产资源。采取定性研究方法,对萍乡市历史文化资源现状进行调查,发现萍乡祠庙类古建筑破坏严重,碑刻、家谱、契约等民间文献亦流失严重。祠庙类古建筑和民间文献是传统文化的重要载体,它的流失影响了萍乡优秀传统文化传承和发展。因此,必须要做好祠庙类古建筑和民间文献的普查工作,同时加强文化资源保护的地方立法,还要建立四级联动保护体系。     

西藏羌塘盆地盐相关构造特征与油气聚集

羌塘盆地中侏罗统盐岩层系发育,并控制了盆地变形和圈闭样式,将盆地盐相关构造和圈闭类型分为盐上、盐层(盐间)和盐下3种型式.盐上构造包括盐上滚动背斜、断弯-断展背斜、背冲断块、逆冲断层遮挡构造和盐推覆构造等;盐层(盐间)构造包括盐窿、断褶构造、鱼尾构造和盐间双冲构造等;盐下构造主要有背冲断块、断弯-断展背斜和盐下双重构造.羌塘盆地盐相关构造形成于侏罗纪末并在新生代进一步定型.根据盆地盐岩层分布和构造特点,将盆地分为盐上、盐层和盐下3种油气成藏模式,其中盐层和盐下是有利的油气聚集场所.     

Pseudomonas biofilm formation and antibiotic resistance are linked to phenotypic variation

Colonization of the lungs of cystic fibrosis (CF) patients by the opportunistic bacterial pathogen Pseudomonas aeruginosa is the principal cause of mortality in CF populations. Pseudomonas aeruginosa infections generally persist despite the use of long-term antibiotic therapy. This has been explained by postulating that P. aeruginosa forms an antibiotic-resistant biofilm consisting of bacterial communities embedded in an exopolysaccharide matrix. Alternatively, it has been proposed that resistant P. aeruginosa variants may be selected in the CF respiratory tract by antimicrobial therapy itself. Here we report that both explanations are correct, and are interrelated. We found that antibiotic-resistant phenotypic variants of P. aeruginosa with enhanced ability to form biofilms arise at high frequency both in vitro and in the lungs of CF patients. We also identified a regulatory protein (PvrR) that controls the conversion between antibiotic-resistant and antibiotic-susceptible forms. Compounds that affect PvrR function could have an important role in the treatment of CF infections.     

Pre-meiotic S phase is linked to reductional chromosome segregation and recombination

Meiosis is initiated from G1 of the cell cycle and is characterized by a pre-meiotic S phase followed by two successive nuclear divisions. The first of these, meiosis I, differs from mitosis in having a reductional pattern of chromosome segregation. Here we show that meiosis can be initiated from G2 in fission yeast cells by ectopically activating the meiosis-inducing network. The subsequent meiosis I occurs without a pre-meiotic S phase and with decreased recombination, and exhibits a mitotic pattern of equational chromosome segregation. The subsequent meiosis II results in random chromosome segregation. This behaviour is similar to that observed in cells lacking the meiotic cohesin Rec8 (refs 3, 4), which becomes associated with chromosomes at G1/S phase, including the inner centromere, a region that is probably critical for sister-centromere orientation. If the expression of Rec8 is delayed to S phase/G2, then the centromeres behave equationally. We propose that the presence of Rec8 in chromatin is required at the pre-meiotic S phase to construct centromeres that behave reductionally and chromosome arms capable of a high level of recombination, and that this explains why meiosis is initiated from G1 of the cell cycle.     

塔里木盆地库车褶皱冲断带的构造特征与油气聚集

根据地面地质调查和地震剖面解释 ,认为库车褶皱冲断带具有分带组合的构造特点 ,即由南侧的滑脱褶皱和北侧的断展褶皱相互匹配 ,实例有喀桑托开背斜与吉迪克背斜、吐孜麻扎背斜与大宛齐背斜、亚克里克背斜与米斯坎塔格背斜以及东秋里塔格背斜与亚肯背斜等 .除了南北分带、上下分层和东西分段特征外 ,库车褶皱冲断带还具有构造分块特点 ,自西向东依次可分却勒、克拉、迪那和阳霞 4大区块 .库车褶皱冲断带的油气聚集主要与侧断坡相关背斜有关     

济阳拗陷临南—钱官屯地区烃类微渗漏特征及异常成因

探讨济阳拗陷临南—钱官屯地区化探异常成因机制。通过对临南—钱官屯地区不同构造单元油井和干井中酸解烃特征和微渗漏方式的研究,结合石油地质条件,从油气成藏的角度分析烃类运移、聚集及其微渗漏散失的全过程。结果表明研究区北部地层中以扩散为主,南部以渗透为主或者不存在微渗漏效应,揭示渗漏源和盖层条件是烃类微渗漏的主控因素。临南—钱官屯地区近地表化探异常模式为"渗漏源影响下的断控异常模式",钱斜14井以北盖层条件和渗漏源条件都最优越,是研究区内最有利的勘探区。     

Collapse and rapid resumption of Atlantic meridional circulation linked to deglacial climate changes

The Atlantic meridional overturning circulation is widely believed to affect climate. Changes in ocean circulation have been inferred from records of the deep water chemical composition derived from sedimentary nutrient proxies, but their impact on climate is difficult to assess because such reconstructions provide insufficient constraints on the rate of overturning. Here we report measurements of 231Pa/230Th, a kinematic proxy for the meridional overturning circulation, in a sediment core from the subtropical North Atlantic Ocean. We find that the meridional overturning was nearly, or completely, eliminated during the coldest deglacial interval in the North Atlantic region, beginning with the catastrophic iceberg discharge Heinrich event H1, 17,500 yr ago, and declined sharply but briefly into the Younger Dryas cold event, about 12,700 yr ago. Following these cold events, the 231Pa/230Th record indicates that rapid accelerations of the meridional overturning circulation were concurrent with the two strongest regional warming events during deglaciation. These results confirm the significance of variations in the rate of the Atlantic meridional overturning circulation for abrupt climate changes.     

塔北轮南地区油气成藏年代与成藏模式

通过包裹体分析法、伊利石测年法、露点压力 /饱和压力法、油气水界面追溯法等多种成藏年代分析方法研究认为 ,轮南地区油气藏具有多期成藏、晚期调整的特点 ,且早期油藏在晚期的调整改造十分强烈 .其中古生界特别是奥陶系油藏主要为晚海西期充注、喜山期受到调整改造而形成的残余原生油藏 ,三叠—侏罗系油藏主要为奥陶系古油藏在晚喜山期调整形成的次生油藏 .造成古油藏普遍发生调整的主要原因 ,一是后期强烈的构造变动和断裂活动 ,二是晚期高—过成熟气强烈的气侵作用 .因此 ,轮南地区大中型油气田的勘探应以轮南古隆起的斜坡部位 (包括轮南西斜坡和南斜坡 )为重点 ,它们是轮南地区大中型油气田形成和保存的最有利部位     

现场岩心精细描述技术及其在准噶尔盆地油气勘探中的应用

岩心描述是油气勘探及地质研究中最基础、最重要、最关键的工作之一,迫切需要以岩心基础描述和含油气水分析相结合的现场综合岩心精细描述技术。该技术流程具体分为描述前准备和系统性地质认识、取心段整体观察和认识、岩心详细描述和显示情况分析、环境分析和油气水显示分析、沉积(微)相、物性特征以及油气水层初判与分析以及沉积储层和油气水层综合分析等步骤。其中,取心段整体观察和认识以及岩心详细描述和显示情况分析是现场取心综合岩心精细描述的关键。运用该技术,对准噶尔盆地达巴松地区达9井三叠系百口泉组以及莫索湾地区侏罗系八道湾组和三工河组第二段取心井段进行了岩心精细描述,明确了百口泉组扇三角洲和侏罗系三角洲不同沉积体系的相对优质砂体类型及其发育特征,系统地建立了不同沉积相类型与测井相之间的关系。     

惠民凹陷临南地区油气输导系统及油气运移特征

油气输导系统和油气运移的特征决定油气藏形成与分布 .根据惠民凹陷临南地区的实际地质条件的分析 ,指出在异常低压的背景下 ,该研究区输导系统和油气运移聚集呈现如下特征 :( 1 )该区输导系统主要由砂体和断层组成 ,断层 (以夏口断层为主 )在油气运移中起着更重要的作用 ,且受断层面形态控制 ,两个北凸面起着汇聚油流的作用 ;( 2 )由于异常低压使得运移动力非常弱 ,油气运移表现为低速流近距离运移的特征 ,油气藏主要分布在夏口断层两侧 ,斜坡南侧高部位无油气藏     

辽河盆地大民屯凹陷流体势及油气运聚

通过对辽河盆地大民屯凹陷古地层压力恢复和地下古流体势空间分布模式模拟,确定盆地流体系统构成,进而提高对油气运移规律的认识,预测有利油气聚集区,提高钻探成功率.研究显示,大民屯凹陷地下古流体势分布与生油洼陷分布一致,高势区是大民屯凹陷油气成藏主要烃源区和动力源区,低势区与现今油气田吻合较好,可根据流体低势区预测新的油气聚集部位.