关于完备格的Σ—core紧性及ΣF—core紧性

所为一个格具有Σｃｏｒｅ紧性（ΣＦ－ｃｏｒｅ紧性），是指在赋以ｓｃｏｔｔ拓扑（ｓｃｏｒｅ开滤子拓扑）之后，这个格作为拓扑空间是ｃｏｒｅ紧的。本文证明了若ΣＦ（Ｌ）为序相容拓扑空间，则Ｌ具有ΣＦ－ｃｏｒｅ紧性当且仅当Ｌ为连续格。     

关于拓扑空间开集格的ΣF－core紧性

所谓一个格是ΣＦ－ｃｏｒｅ紧的，是指在赋以Ｓｃｏｔ开滤子拓扑之后，这个格作为拓扑空间是ｃｏｒｅ紧的．证明了一个拓扑空间的开集格是ΣＦ－ｃｏｒｅ紧的当且仅当该空间是ｃｏｒｅ紧的     

关于拓扑空间开集格的ΣF—core紧性

所谓一个格是ΣＦ－ｃｏｒｅ紧的，是指在赋以Ｓｃｏｔｔ开滤子拓扑之事，这个格作为拓扑空间是ｃｏｒｅ紧的，证明了一个拓扑空间的开集格是ΣＦ－ｃｏｒｅ紧的当且仅当该空间是ｃｏｒｅ紧的。     

不同酸掺杂对聚苯胺导电性能的影响

采用元素分析、Ｘ射线光电子谱（ＸＰＳ）以及直流电导率σｄｃ（Ｔ）与温度关系等方法对三种聚苯胺ＰＡＮＩ－ＨＣｌ,ＰＡＮＩ－Ｈ２ＳＯ４和ＰＡＮＩ－Ｈ３ＰＯ４进行了研究．在Ｃｌ（２ｐ）谱中,可以分辨四个二重态的自旋轨道裂分偶极子Ｃｌ（２ｐ１／２）和Ｃｌ（２ｐ３／２）．Ｓ（２ｐ）－ｃｏｒｅ－ｌｅｖｅｌ谱显示了二重态自旋轨道的裂分偶极子Ｓ（２ｐ１／２）和Ｓ（２ｐ３／２）,而Ｐ（２ｐ）－ｃｏｒｅ－ｌｅｖｅｌ谱仅在结合能为１３４．０３ｅＶ时显示单一的峰值．室温时ＰＡＮＩ－ＨＣｌ和ＰＡＮＩ－Ｈ２ＳＯ４的σｄｃ比ＰＡＮＩ－Ｈ３ＰＯ４的σｄｃ高数倍．ＰＡＮＩ样品的导电性与温度的关系表明它们是半导体,而且符合准一维的变程跳跃（Ｑ１Ｄ－ＶＲＨ）模型     

液晶显示器的发展动向与市场分析

显示器按发光特性分为：阴极射线管（ＣＲＴ）显示器，液晶显示器（ＬＣＤ），等离子体显示器（ＰＤＰ）等。各种平板显示器（ＬＣＤ，ＰＤＰ等）都试图取代ＣＲＴ。ＬＣＤ现为平板显示器的主流产品。ＬＣＤ又分为ＳＴＮ与ＴＦＴ两种。国际上显示器类市场总份额据美国ＳｔａｎｄｆｏｒｄＲｅｓｏｕｒｃｅｓ预测，２０００年全球主要平板显示器占市场份额为：平板显示器种类ＬＣＤＦＥＤＰＤＰＥＬ市场份额（％）８３－９３６－６６６－３６３－２５　　据美国ＳｔａｎｄｆｏｒｄＲｅｓｏｕｒｃｅｓ预测，至２００１年世界平板显示器市场将达…     

不同酸掺杂对聚苯胺导电性能的影响

采用元素分析,Ｘ射线光电子谱（ＸＰＳ）,以及直流电导率σｄｃ（Ｔ）与温度关系等方法对三种聚苯胺ＰＡＮＩ－ＨＣｌ,ＰＡＮＩ－Ｈ２ＳＯ４和ＰＡＮＩ－Ｈ３ＰＯ４进行了研究,在Ｃｌ（２ｐ）谱中,可以分辨四个二重态的自旋轨道裂分偶极子Ｃｌ（２ｐ１／２）和Ｃｌ（２ｐ２／２）Ｓ（２ｐ）－ｃｏｒｅ－ｌｅｖｅｌ谱显示了二重态自旋轨道的裂分偶极子Ｓ（２ｐ１／２）和Ｓ（２ｐ３／２）,而Ｐ（２ｐ）－ｃｏｒｅ－ｌｅｖｅｌ,     

苦丁茶降血脂作用的研究

对实验性高血脂小鼠分别用１．２％和２．４％的苦丁茶水灌胃４５ｄ后，取尾血测定其血清总胆固醇（ＴＣ）、甘油三酯（ＴＧ）、高密度脂蛋白胆固醇（ＨＤＬ－ｃ）含量和卵磷脂胆固醇酰基转移酶（ＬＣＡＴ）的相对活性，并计算出低密度脂蛋白胆固醇（ＬＤＬ－ｃ）和极低密度脂蛋白胆固醇（ＶＬＤＬ－ｃ）浓度及动脉硬化指数（ＡＩ），并与绞股蓝茶的降脂作用进行比较。结果表明，饮用苦丁茶可以明显降低实验性高血脂小鼠的ＴＣ、ＴＧ和ＬＤＬ－ｃ、ＶＬＤＬ－ｃ（Ｐ＜０．０１或Ｐ＜０．０５），显著升高ＨＤＬ－ｃ含量及ＨＤＬ－ｃ／ＴＣ（Ｐ＜０．０１或Ｐ＜０．０５），而作为阳性对照的绞股蓝茶组ＨＤＬ－ｃ与高脂组比较无显著差异．二个苦丁茶组与绞股蓝茶组的ＬＤＬ－ｃ／ＨＤＬ－ｃ及ＬＣＡＴ相对活性均与高脂组有显著差异（Ｐ＜０．０１），与对照组则无明显差异。由此说明，苦丁茶具有降血脂、防治动脉粥样硬化的作用，提示苦丁茶的降脂机理与其能够升高ＬＣＡＴ相对活性有关。     

PHOTOLUMINESCENCE SPECTRA OF C_(60) MOLECULES EMBEDDED IN POROUS SI

ＰＨＯＴＯＬＵＭＩＮＥＳＣＥＮＣＥＳＰＥＣＴＲＡＯＦＣ_（６０）ＭＯＬＥＣＵＬＥＳＥＭＢＥＤＤＥＤＩＮＰＯＲＯＵＳＳＩＹａｎＦｅｎｇ；ＢａｃＸｉｍａｏ；ＷｕＸｉａｏｗｅｉ；ＣｈｅｎＨｕｉｌａｎ（ＤｅｐａｒｔｍｅｎｔｏｆＰｈｙｓｉｃｓａｎｄＩｎｓｔｉｔ?..     

POLYCYCLE－COMPOUNDING STRUCTURES AND REGIONAL LAYERSLIP－DIPSLIP SYSTEMS：IMPLICATIONS FOR THE TARIM BASIN，XINJIAN

ＰＯＬＹＣＹＣＬＥ－ＣＯＭＰＯＵＮＤＩＮＧＳＴＲＵＣＴＵＲＥＳＡＮＤＲＥＧＩＯＮＡＬＬＡＹＥＲＳＬＩＰ－ＤＩＰＳＬＩＰＳＹＳＴＥＭＳ：ＩＭＰＬＩＣＡＴＩＯＮＳＦＯＲＴＨＥＴＡＲＩＭＢＡＳＩＮ，ＸＩＮＪＩＡＮ￥ＳｕｎＹａｎ；ＪｉａＣｈｅｎｇｚａｏ（Ｄｅ...     

A COMPARATIVE STUDY OF THE TWO TRANSLATIONS OF MOONLIGHT ON THE LOTUS POND

ＡＣＯＭＰＡＲＡＴＩＶＥＳＴＵＤＹＯＦＴＨＥＴＷＯＴＲＡＮＳＬＡＴＩＯＮＳＯＦＭＯＯＮＬＩＧＨＴＯＮＴＨＥＬＯＴＵＳＰＯＮＤ①ＬｉｕＸｉａｏｈｕａⅠ．ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｉｓｐａｐｅｒｉｓｉｎｔｅｎｄｅｄｔｏｍａｋｅａｃｏｍｍｐａｒａｔｉｖｅ...     

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.     

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.     

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。     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that