荧光素荧光法测定大气中SO2的研究

报道了以荧光素为指示剂,荧光法间接测定大气中ＳＯ２ 的方法．在ｐＨ＝ ５．５ ～７ ．５ 中性缓冲介质中,Ｉ２ 与荧光素反应,使荧光素的荧光熄灭,当加入ＳＯ２－３ 时,ＳＯ２－３ 与Ｉ２ 反应使体系荧光增强,体系激发波长、发射波长分别为４９４ ｎｍ 和５１０ｎｍ ,ＳＯ２－３ 含量在２ ．１～６０．０ μｇ／Ｌ范围内呈良好线性关系,检测下限为２．１ μｇ／Ｌ．     

5''''-硝基-水杨基荧光酮-氯代十六烷基吡啶荧光熄灭法测定痕量Cr(Ⅵ)

基于Ｃｒ（Ⅵ）－５′－硝基－水杨基荧光酮（５′－Ｎ－ＳＡＦ）－氯代十六烷基吡啶（ＣＰＣ）体系的荧光熄灭效应，提出一种测定痕量铬（Ⅵ）的新荧光分析方法．ｐＨ在４．５～５．５范围内的柠檬酸—氢氧化钠缓冲溶液中，在ＣＰＣ存在下，Ｃｒ（Ⅵ）与５′－Ｎ－ＳＡＦ形成摩尔比为１２的配合物，配合物的激发波长和发射波长分别为：λｅｘ１＝４７５ｎｍ，λｅｘ２＝５０５ｎｍ，λｅｍ＝５２５ｎｍ．Ｃｒ（Ⅵ）浓度在０．８～５０μｇ／Ｌ范围内与ΔＦ呈良好的线性关系，相关系数ｒ＝０．９９９２，检测限为０．８μｇ／Ｌ．本法灵敏度高，选择性好，适用于水样、人发中痕量Ｃｒ（Ⅵ）的直接测定     

近红外荧光探针法测定核酸的研究

以阳离子花菁染料为荧光探针, 依近红外荧光猝灭测定核酸． 最大激发及发射波长分别为７６５ 、７９０ｎｍ ． 核酸测定的线性范围为０－０８ ～１－２μｇ／ｍ Ｌ（ＣＴＤＮＡ 及ＳＭ ＤＮＡ） , ０－１ ～１－６μｇ／ｍＬ（ｙｅａｓｔ ＲＮＡ） ．     

5-溴水杨基荧光酮-CTMAB荧光熄灭法测定铜的研究

研究在ＣＴＭＡＢ存在下,以５－溴水杨基荧光酮（５－ＢｒＳＡＦ）作为荧光试剂,用荧光熄灭法测定微量铜的新方法。详细研究了各种条件实验,反应的适宜酸度范围为ｐＨ＝４．４￣５．０,铜含量在０￣８．０μｇ／２５ｍＬ范围内呈线性关系,配合物的组成比为Ｃｕ：５－ＢｒＳＡＦ＝１：２,激光发波长为３６５ｎｍ,发射波长为５５０ｎｍ。方法的灵敏度高,检出度为２．４μｇ／Ｌ,用于化学试剂中微量铜的测定,结果令人满意。     

荧光猝死法测定草酸的研究

首次报道了用高灵敏荧光粹灭法测定草酸的新方法．在锆（ＩＶ）－槲皮素的体系中，１．５ｍｌ２ｍｏｌ／ＬＨＣｌ存在下，草酸的加入使此体系荧光猝灭，用此法可以测定草酸的含量．其检测下限为０．０２１ｍｇ／Ｌ，线性范围０．０２～２．４０μｇ／ｍｌ．λｅｘ／λｃｍ＝４３３ｎｍ／４９５ｎｍ．本法灵敏度高，选择性好，快速，简捷，重现性好．     

极谱吸附波连续测定水样中痕量锌,锰和硒

在酒石酸－乙二胺－高氨酸－亚硫酸钠－高碘酸钟体系中痕量锌锰和硒出现良好极谱吸附波，波峰敏锐，可测定浓度范围在０．４０～４０μｇ／Ｌ　Ｚｎ￣（２＋）１．６～８０μｇ／ＬＭｎ￣（２＋）及０．０２～２．３μｇ／ＬＳｅ（Ⅳ）。对含１１．７μｇ／Ｌ　Ｚｎ￣（２＋），７．０μｇ／Ｌ　Ｍｎ，１．４５μｇ／Ｌ　Ｓｅ（Ⅳ）的矿泉水样测定，其相对标准偏差分别是６．２％和９．２％和７．３％。     

5′—硝基—水杨基荧光酮—氯代十六烷基吡啶荧光熄灭法测…

基于Ｃｒ（Ⅵ）－５′－硝基－水杨基荧光酮（５′－Ｎ－ＳＡＦ）－氯代十六烷基吡啶体系的荧光熄灭效应，提出一种测定痕量铬的新荧光分析方法，ＰＨ在４．５－５．５范围内的柠檬酸－氢氧化钠缓冲溶液中，在ＣＰＣ存在下，Ｃｒ（Ⅵ）与５′－Ｎ－ＳＡＦ形成摩尔比为１：２的配合物，配合物的激发波长和发射波分别为：λｅｃ１－４７５ｎｍ，λｅｘ２＝５０５ｎｍ，λｃｍ＝５２５ｎｍ，Ｃｒ（Ⅵ）浓度在０．８－５０μｇ／Ｌａｉｌ     

痕量氟的Al^3＋—Calcein配合物荧光熄灭测定法

本文建立了痕量氟的Ａｌ＾３＋－Ｃａｌｃｅｉｎ配合物荧光熄灭测定法。该法激发波长４８０ｎｍ，发射波长５０３ｎｍ，线性范围２－１５０μｇ／Ｌ，灵敏度为２μｇ／ＬＦ＾－。１００μｇ／ＬＦ＾－时标准偏差为１．３μｇ／ＬＤ＾－，是现有的最灵敏方法之一。     

5‘—硝基水杨基荧光酮荧光猝灭法测定微量锡

基于Ｓｎ－５‘－硝基水杨基荧光酮－Ｔｗｅｅｎ－８０体系的荧光猝灭效应，提出一种测定微量锡的新荧光分析方法。在０．８－１．２ｍｏｌ／Ｌ的硫酸介质中，在Ｔｗｅｅｎ－８０存在下，锡与５’－Ｎ－ＳＡＦ形成摩尔比为１：４的橙红色络合物。该体系存在两个激发峰，其激发波长分别为λｅｘ１＝４７５ｎｍ，λｅｘ２＝５０５ｎｍ，发射波长λｅｍ＝５２５ｎｍ。     

在阴离子表面活性剂存在下3,5-diCl-DMPAP分光光度法测定微量锌

在阴离子表面活性剂ＳＬＳ存在下，研究了２－（３，５－二氯－２－吡啶偶氮）－５－二甲氨基酚（简称３，５－ｄｉＣｌ－ＤＭＰＡＰ）与锌反应的适宜显色条件．结果表明，在ｐＨ为６．０～１０．０范围内，锌（Ⅱ）与试剂形成１∶２的紫红色配合物．配合物的最大吸收波长位于５６５ｎｍ处，表观摩尔吸光系数为１．２×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，锌浓度在０～６．０μｇ／１０ｍＬ范围内遵守比尔定律．方法已用于地质化探样品和镁合金中微量锌的测定     

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