湖北省湿地演化的地质地貌背景

湖北经历过几次重要的海陆变迁和造山运动后,到晚第三纪时,逐渐形成了近代地貌的雏形.其后的新构造运动不仅控制着湖北现代地貌的基本格局,而且奠定了湖北湿地演化的地质地貌基础.主要表现为:新构造运动在湖北省境通过断块差异的升降运动、掀斜运动和坳折沉降运动几种运动类型,不仅控制着湖泊湿地的形成与兴衰、河流湿地的变迁,而且为亚高山湿地和库塘湿地的形成创造了地质条件.     

科学施策,构建黄河流域生态安全新格局

 地质研究表明，中生代燕山运动奠定了中国大陆的轮廓，新生代喜马拉雅运动塑造出中国西高东低的阶梯状地貌格局，奠定了黄河形成的地质背景。黄河的孕育发展经历了单一湖盆水系发育期、不同湖盆水系贯通期和海洋水系形成期3个阶段。黄河流域有3000多年是全国政治、经济、文化中心，黄河哺育了中华民族，孕育了璀璨夺目的华夏文明，是中华民族的母亲河。     

贵州普定后寨河流域喀斯特水文地貌空间耦合分析

通过趋势面分析等数学手段 ,揭示后寨河流域内地貌演化和水系变迁的规律性 ,并指出波玉 -木拱河的不断下切导致了侵蚀基准面的降低 ,进而对流域内地貌和水系的演化产生了重要影响。     

广西平果堆积铝土矿岩溶地貌演化与成矿作用

研究了广西平果堆积铝土矿岩溶地貌演化与成矿作用.研究结果表明:广西平果堆积铝土矿风化程度的发展对应于矿区岩溶地貌的演化:地貌分带是矿区岩溶演化的基本规律之一;随着地貌演化过程中岩溶类型的顺序发展,地貌分带形态的变化趋向于不规则;矿区岩溶类型分带对应不同的水系结构,分带地貌演化反映水系发展过程,从水系演化关系指示矿区岩溶在地壳抬升过程中多旋回活动的特征;通过对比那豆与太平一教美矿区,发现堆积矿的分布形态随地貌演化趋向于分散和不均匀,堆积矿成分的变化趋势符合风化过程的一般规律;堆积矿的氧化铝含量经历了从上升到下降的变化过程,与地下岩溶演化程度密切相关;根据岩溶地貌初步恢复了矿区地下小流域水系分布形态,发现岩溶水系发育程度是形成地貌差异和堆积矿变化的基本原因.     

塔里木河水系变迁遥感研究

本文采用陆地卫星ＭＳＳ数字磁带，经过增强处理，提取了塔里木河水系变迁信息．经研究认为：现代塔里木河水系是由南北两大水系合并而成的，水系变迁的主要原因是冰后期大气环流调整和新构造运动影响．     

山区河谷-水系演化及环境效应研究——以金沙江为例

随着河流地貌学研究的深入,河谷-水系演化及环境效应成为了国內外重要研究领域。首先对河谷-水系演化及环境效应研究的国内外进展进行回顾与前瞻。金沙江可谓是山区河谷-水系演化的典型代表,以金沙江河谷-水系演化及环境效应研究为例,认为:河谷-水系变迁及环境效应实质上是区域性陆地地表环境演变的过程,也是深切河谷区中最基本最重要的演变形式,是中外地学研究急需解决的重要科学问题;立足于基于区域自然地理背景的河流地貌学研究,以河流地貌学为主进行自然和人文的多学科理论与方法的拓展性研究,系统全面地从地质历史和发生学角度分析研究山区河谷-水系及环境效应得到机理性和科学性的认识;将构造与构造运动、气候变化、层状地貌、河谷沉积等综合系统研究,将长时间尺度河谷-水系演化与现代地理过程、格局、特征、效应相结合,既揭示山区河谷-水系发育史,又构建现代河谷地域系统高梯度效应框架体系,突显流域系统演化和系统论的理论与应用,可促进河流地貌学的进一步创新,以及大江流域水系与河谷地貌的应用研究。     

绵阳市地貌发育简史

绵阳市境现代地貌是绵阳地质构造单元发展、演化的产物。它经历了漫长的地质历史发展过程和受到多次构造运动的作用：印支运动脱离海侵，奠定地貌发育的轮廓基础；燕山运动结束沉积历史，造就地貌雏型；喜马拉雅山运动构造发生根本性变革，地貌格局定型；新构造运动地质历史步入新阶段，地貌向现代地貌景观迈进。     

北仑河口动力地貌特征及其演变

根据现场调查和室内分析，北仑河口动力地貌有剥蚀丘陵、残丘、冲积平原、冲积－海积平原、海积平原、沙堤、沙滩、淤泥滩、红树林滩、河口沙坝、潮流沙脊、潮沟及人工地貌。北仑河口经历全新世早期侵剥蚀形成古河道，全新世中期海水浸入古河道，形成河口湾；全新世中－晚期河口湾被充填，形成湾内沙坝；全新世晚期河口湾逐渐被填满，形成现代北仑河口动力地貌态势。     

内蒙古经棚古湖区湖泊演化与环境变迁

通过经棚地区构造地貌、新构造运动、沉积环境等的综合分析,论证了经棚古湖的存在;探索了经棚古湖发生、发展和消亡的全过程;揭示了经棚古湖与西拉木伦河中上游及浑善达克坳陷东部古湖在发育时代、水系变迁上的密切关系,指出了研究这些古湖的发育与演化在研究区域环境变迁规律中的重要意义.     

城市不同发展阶段地表水系及地貌形态的变化

从城市地表水系的变迁及其地貌形态的变化来探讨不同发展阶段城市地貌的变化.对于一个城市,从它形成初期、发展期、极盛期直到发展后期,它的人口密度分布经历了从“平原型”到“丘陵型”、……“山地型”、“高原型”、“火山口型”的发展阶段,而地表水系却经历了一个不断消亡、退化、改造、转入地下、水质恶化,然后再不断复苏、水质不断改善的过程.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.