溶膜富集石墨炉原子吸收光度法测定痕量铬

利用缔合物Ｃｒ（ＨＬ′）２－ＳＣＮ－ＤＢＳ能被可溶滤膜富集的特点,用石墨炉原子吸收分光光度法测定了Ｃｒ（ＶＩ）为０．１μｇ·Ｌ－１级水样。在Ｃｒ（ＶＩ）为１．０～６．０μｇ·Ｌ－１测量范围内,Ｃｒ（ＶＩ）的浓度与吸光度呈良好的线性关系,其相关系数ｒ＝０．９９８８,检测限０．０５μｇ·Ｌ－１。地表水及饮用水中常见离子不影响测定,水样加标回收率为９０％～１１０％。     

和厚朴酚的吸附伏安法研究

和厚朴酚在０．１ｍｏｌ·Ｌ＾－ＮＨ３－ＮＨ４Ｃｌ底液中,出现一灵敏吸附伏安还原峰,Ｅｐ＝－０．２３Ｖ（ｖｓ．Ａｇ／ＡｇＣｌ）。当富集时间为３ｍｉｎ时,峰电流与和厚朴酚浓度在１．０×１０＾－８￣１．０×１０＾－７ｍｏｌ·Ｌ＾－１范围内呈线性关系,检测限为３．０×１０＾－９ｍｏｌ·Ｌ＾－１,可用于中药厚朴的测定。     

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％。     

含B2O3高MgO炉渣组成对熔渣体积质量及表面张力的影响

用化学试剂氧化物配制合成宫硼渣，在ＺＣ－１６００型综合测试仪上，用双柱联称法同时测定富硼渣熔体体积质量及表面张力．体积质量在２．５±０．５ｇ·ｃｍ－３范围，表面张力在０．４～０．６Ｎ·ｍ－１范围内变化．二者均随渣中ＭｇＯ量的增加，或随ＳｉＯ２量的减少而增大，随温度的提高而减小．     

新显色剂5－（4＇－氯－2＇羧基苯偶氮）绕丹宁与银的显色反应及其应用研究

在ＴｒｉｔｏｎＸ－１００存在下，ｐＨ＝５．０～５．５时，新试剂Ｃｌ－ＲＡＣＰ与银生成配合物，其最大吸收波长为５００ｎｍ，配合物的配位比为１：２，表观摩尔吸光系数为１．１×１０￣５·Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。Ａｇ（Ⅰ）的浓度在０～２．０μｇ·ｍｌ￣（－１）范围内符合比尔定律。该法用于阳极泥和废定影中银的测定，结果较满意，相对标准偏差为１％。     

用单扫示波极谱法测定微量氟哌啶醇

建立了ＮＨ３－ＮＨ４Ｃｌ底液中，以单扫示波极谱法测定微量氟哌啶醇的方法。氟哌啶醇在该底液中有一灵敏导数极谱波，峰电位－１．５６Ｖ（ｖｓ．ＳＣＥ）。峰电流与氟哌啶醇的浓度在０．２～３．０μｍｏｌ·Ｌ＾－１范围内成正比。最低检测限为０．０８μｍｏｌ·Ｌ＾－１。测定了针剂和片剂中氟哌啶醇的含量，结果满意。对氟哌啶醇在汞电极上的电还原性质进行了探讨。     

偶氮染料异方酸二酰胺与氟离子的显色体系

偶氮染料异方酸二酰胺（ＢＮＢＰＳ）在ＤＭＳＯ中与氟离子（水溶液）有良好的显色作用．显色剂与ＰＨ为３．８～８．０的Ｆ－试液反应，由紫红色迅速变为蓝色（△λ＝１０２ｎｍ），λｍａｘ＝６３２ｎｍ，４ｈ内吸光度值保持不变，摩尔吸光系数ε５３２＝１．７×１０４Ｌ·ｍｏｌ－１·ｃｍ－１．Ｆ－１浓度在０～５μｇ／１０ｍＬ范围内线性关系良好大量的Ｃｌ－，ＮＯ３，Ｋ＋和Ｎａ＋存在时，对其测定无干扰Ｂｒ－，Ｉ－，Ｆｅ３＋，Ａｌ３＋和Ｂａ２＋等离子的允许共存量较大．阳离子与显色剂无显色作用．     

阳极溶出伏安法测定食品中痕量镉和铅

采用汞膜玻碳电极阳极溶出伏安法测定墨鱼干、大米和西红柿中的痕量镉和铅．样品先于５００℃灰化，继用少量１：１ＨＮＯ３＋Ｈ２Ｏ２消解，不经任何分离，可直接进行测定，Ｃｄ２＋和Ｐｂ２＋的浓度分别低至０．１０μｇ·Ｌ－１和０．２０μｇ·Ｌ－１时仍能检出．     

非对称水溶性卟啉与钯（II）显色反应的光度法研究

研究了非对称性５，１０，１５－三（４－甲基－３－磺基苯）－２０－［４－（５－氟尿嘧啶）－３－磺基苯］卟啉（ＭＦｕＳＰＰ）测钯的显色条件，在表面活性剂十二烷基磺酸钠存在下，ｐＨ４．５￣６．０的弱酸性ＨＡｃ￣ＮａＡｃ缓冲介质中，用抗坏血酸催化，Ｐｄ（Ⅱ）与ＭＦｕＳＰＰ形成１：１配合物，最大吸收波长４１５ｎｍ，摩尔吸光系数ε＝１．８×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１，线性范围０￣２．０μｇ／１０ｍｌ     

间溴偶氮羧—m测定微量铟的研究

本文研究了间溴偶氮羧－ｍ与铟显色反应的最佳条件．在ＨＣｌ－ＫＣｌ介质中，ｐＨ２．７～３．６范围内，铟与显色剂形成１∶２的蓝色配合物，其最大吸收波长为６８６ｎｍ，摩尔吸光系数ε６８６＝１．３８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１．铟含量在０．０４～０．３２μｇ·ｍＬ－１时服从比耳定律．同时还采用了Ｐ３５０反相萃取柱色层分离法使铟与大量干扰离子分离〔１〕，建立了在水相中直接测定微量铟的简便而又迅速有效的方法．     

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