浙江洋滨黄玉花岗斑石的Nd,Sr,Pb同位素研究

洋滨斑岩锡矿位于我国东南沿海中生代火山活动带中部。含矿岩石主要由含黄玉的钾长花岗斑岩与二长花岗斑岩及黄英斑岩组成。这些岩石具有高硅，强过铝质，富集不相容元素，弱的铈和强的铕负异常以及高的稀土总量特征。采用最小二乘法计算的全岩Ｒｂ－Ｓｒ等时线年龄为１０１．７±２．１Ｍａ，（＾８７Ｓｒ／＾８６Ｓｒ）ｉ＝０．７１４２±９。同时，它们具有低的εＮｄ值（－８．４～－８．０），较高的＾２０７Ｐｂ／＾２０４Ｐｂ     

云南老王寨金矿区煌斑岩富集地幔源区的Sr,Nd同位素和NH^＋4 …

分析了云南老王寨金矿区煌斑岩的Ｓｒ，Ｎｄ同位素组成和固定铵的含量与原始地幔现代值相比，本区煌斑岩上具有相对高＾８７Ｓｒ／＾８６Ｓｒ比值（０．７０６４４－０．７０８９５）和低＾１４３Ｎｄ／＾１４４Ｎｄ比值（０．５１２４３６－０．５１２５２４）；岩石固定铵（ＮＨ＾＋４）含量（７４．３４＊１０＾－６－４６８．７２＊１０＾－６）明显高于其他幔源岩石（１＊１０＾－６－２７＊１０＾－６），低于矿区炭质围岩（７     

海南岛海西－印支期花岗岩和暗色包体的Sm－Nd同位素特征

海南岛花岗岩以海西－印支期巨型花岗岩岩基为主体，面积７０００ｋｍ２以上。花岗岩的εＮｄ（ｔ）为－１７．２至－５．１，Ｉｓｒ为０．７０８７，δ１８Ｏ平均值１０．６６，属壳源型岩基。但各别岩体的εＮｄ（ｔ）值和ｔＤＭ值均不同，反映其原岩成分的差异。花岗岩中，最大ｔＤＭ为１．８Ｇａ和１．７Ｇａ，与该区最古老变质岩中的变质火山岩Ｓｍ－Ｎｄ全岩等时线年龄１．７Ｇａ几乎一致，代表了该岛早期一次重要的地壳生长时期。花岗岩中暗色包体系残留体，具有低的εＮｄ（ｔ）值－１２．８至－１０．１５；εＳｒ（ｔ）值－８６至６；以及高的Ｓｍ／Ｎｄ值０．３８至０．５９，表明在花岗岩形成过程中熔体和残留体之间发生了较强的Ｓｍ－Ｎｄ分馏作用。     

崂山花岗岩锆石U—Pb年龄测定及其意义

采用锆石Ｕ－Ｐｂ稀释法对崂山花岗岩中石英二长岩，黑云二长花岗岩，正长花岗岩及碱性花岗岩４个单元的代表性岩体进行年龄测定。结果表明：其淡黄色透明状锆石的＾２０６Ｐｂ／＾２３８Ｕ表面年龄分别为１４６．８±０．８，１２６．２±０．８，１１３．０±０．９和１１０．８±０．９Ｍａ，代表岩石各自的结晶年龄，而正长花岗岩和碱性花岗岩中的红褐色半透明－不透明锆石，因曾遭受严重的晶格破坏和放射性成因铅丢失，表面年龄     

中条山落家河花岗闪长岩的铷—锶和铅同位素地质学…

中条山落家河花岗闪长岩铷－锶等时线年龄为１７９５＋／－８４Ｍａ，＾８７Ｓｒ／＾８６Ｓｒ初始比为０．７０８＋／－０．００７３。铅同位素等时线年龄为２５７２＋／－３０Ｍａ。这些数据表明该岩体是中条裂谷闭合阶段的产物，在成因上与太古界基底岩系在Ａ－型俯冲过程中发生部分熔融有关。     

Ba和Mg掺杂对Bi（Pb）－Sr－Ca－Cu－O超导性能的影响

采用固态反应法制备了名义组分为Ｂｉ１．８Ｐｂ０．２Ｓｒ２Ｃａ２Ｃｕ３Ｏｘ和Ｂｉ０．９Ｐｂ０．１Ｂａ０．１Ｍｇ０．１Ｓｒ０．８ＣａＣｕ２Ｏｘ超导样品，并研究了Ｂａ、Ｍｇ掺杂对Ｂｉ系超导性能的影响。用ｘ射线衍射及电阻－温度关系的测量获得的实验结果表明，添加Ｂａ和Ｍｇ元素可以有效地抑制Ｂｉ系２２１２相的生成，促进２２２３相的形成，并能提高超导材料的Ｔｃ．     

Ba和Mg掺杂对Bi（Pb）—Sr—Ca—Cu—O超导性能的影响

采用固态反应法制备了名义组分为Ｂｉ１．８Ｐｂ０．２Ｓｒ２Ｃａ２Ｃｕ３Ｏｘ和Ｂｉ０．９Ｐｂ０．１Ｂａ０．１Ｍｇ０．１Ｓｒ０．８ＣａＣｕ２Ｏｘ超导样品，并研究了Ｂａ，Ｍｇ掺杂对Ｂｉ系超导性能的影响。用Ｘ射线衍射及电阻－温度关系的测量获得的实验结果表明，添加Ｂａ和Ｍｇ元素可以有效地抑制Ｂｉ系２２１２相的生成，促进２２２３相的形成，并能提高超导材料的Ｔｃ。     

烧结温度对PSBN铁电陶瓷介电性能的影响

用普通的电子陶瓷工艺制备了ＰｂＯ－ＳｒＯ－ＢａＯ－Ｎｂ２Ｏ５（ＰＳＢＮ）系统民陶瓷，研究了ＰＳＢＮ系统铁电陶瓷的介电性能与烧结温度的关系，ＸＲＤ分析表明：ＰＳＢＮ系统铁电陶瓷的主晶相是Ｐｂ０．７Ｂａ０．３Ｎｂ２Ｏ６（ＰＢＮ）、Ｓｒ０．５Ｂａ０．５Ｎｂ２Ｏ６（ＳＢＮ）和Ｂａ０．２７Ｓｒ０．７５Ｎｂ２Ｏ５．７８（ＢＳＮ），将这一复杂的化学系统看作三元系固熔体，其中ＰＢＮ、ＳＢＮ和ＢＳＮ各相比例随烧结温     

La0.8Sr0.2MnO3＋λ负载于α,γ—Al2O3上作为燃烧催化剂的研究

Ｌａ０．８Ｓｒ０．２ＭｎＯ３＋λ负载于α,γ－Ａｌ２Ｏ３上作为燃烧催化剂的研究高丽蓉,孙燕华,沈岳年（内蒙古大学化学系,０１００２１,呼和浩特）ＳｔｕｄｉｅｓｏｎＬａ０．８Ｓｒ０．２ＭｎＯ３＋λＬｏａｄｉｎｇｏｎα,γ－Ａｌ２Ｏ３ａｓａＣｏｍｂｕｓｔ...     

Sol-gel法合成Bi_(1.6)Pb_(0.3)Sb_(0.1)Sr_2Ca_2Cu_3O_x体系的超导材料的研究

本文用Ｓｏｌ－ｇｅｌ法合成了Ｂｉ１．６Ｐｂ０．３Ｓｂ０．１Ｓｒ２Ｃａ２Ｃｕ３Ｏｘ体系的高ＴＣ超导原粉，对于不同的烧结时间，材料的超导性有不同程度的差异，（超导转变温度为１０８．３～１１６．１Ｋ）并与同种方法合成的Ｂｉ１．７Ｐｂ０．３Ｓｒ２Ｃａ２Ｃｕ３Ｏｘ体系进行了比较．用Ｓｏｌ－ｇｅｌ法，在Ｂｉ系中掺杂Ｐｂ，同样会缩短烧结时间（缩短６０ｈ），促进高温相的形成，同时掺杂Ｐｂ，Ｓｂ，形成超导材料所需的烧结时间进一步缩短（缩短１５３ｈ）．利用ＳＥＭ和Ｘ－ｒａｙ观察和分析了样品的形貌特征和物相结构．Ｓｏｌ－ｇｅｌ法具有工艺简单，烧结时间短，样品颗粒均匀、粒度小、组分易控等优点，在高ＴＣ超导材料中不失为一种行之有效的材料制备工艺．     

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.     

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.     

A computer generator for randomly layered structures

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

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.     

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。     

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.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to