3,3‘,5,5’—四甲基联苯胺比色测定铬（Ⅵ）的人工标准色列

本提出了一套人工标准色列用于３，３’，５，５’－四甲基联苯胺（ＴＭＢ）比色测定铬（Ⅵ），该色列以Ｈ２ＳＯ４为介质，以不同含量的Ｋ２ＣｒＯ７，Ｋ４Ｆｅ（ＣＮ）６和Ｋ３Ｆｅ（ＣＮ）６溶液组成，其颜色与ＲＭＢ和铬（Ⅵ）的显色产物相近，使用本色列，铬（Ⅵ）测定范围为０．０１￣０．３０ｍｇ／Ｌ，用本法对电镀废水中的铬（Ⅵ）进行了测定，六次测定的相对标准偏差为３．５％，平均值与ＴＭＢ测定铬（Ⅵ）的分光光度法     

动力学抑制光度法测定痕量铁

在ｐＨ８．３的硼酸－氢氧化钠缓冲溶液中，Ｆｅ（Ⅲ）对过氧化氢氧化罗丹明Ｂ的褪色反应有阻抑作用．据此，本文以固定时间法对反应条件进行了选择，建立了动力学光度法测定痕量铁的新方法．可测范围：０～０．０４ｍｇ／Ｌ，灵敏度：９．２０×１０－７ｇ／Ｌ，用于试剂级盐酸和硝酸中微量铁的测定，相对标准偏差分别为６．０％和５．３％，平均加标回收率为９７．３％和９７．５％     

石墨炉原子吸收测定生物样品中痕量铬的基体比较研究

对石墨炉原子吸收分光光度法测定生物样品中痕量铬的基体改进剂进行了比较研究,选定了Ｍｇ（ＮＯ３）２为基体改进剂,拟定了不需校正背景、不用分离直接石墨炉原子吸收法测定痕量铬的分析方法．结果表明,方法的线性范围为０～２００ｎｇ／ｍＬＣｒ,其特征量为３．５×１０－１２ｇ／１％．方法已用于人血清、人尿和人发中痕量铬的测定．     

铬（Ⅵ）—碘化物—聚乙烯醇体系吸光光度法测定痕量铬（Ⅵ）

利用铬（Ⅵ）与过量的碘化钾在酸性溶液中反应，生成定量的Ｉ－３．黄色的Ｉ－３能稳定地存在于聚乙烯醇的水溶液中，从而间接光度测定铬（Ⅵ）．方法灵敏、简便、快速，摩尔吸光系数可达５０×１０４Ｌ·ｍｏｌ－１·ｃｍ－１．可用于废水中痕量铬（Ⅵ）的测定．     

从香菇发酵醪液中分离鸟苷酸技术的研究

香菇发酵醪处理液经７３２阳树脂在ｐＨ２．５￣３．０时得５＇－ＧＭＰ和５＇－ＣＭＰ混合液，再调至ｐＨ４．０￣４．５上７１７阴离子树脂柱，５＇－ＧＭＰ被吸附，用ψ＝３％ＮａＣｌ溶液解吸，即分离得５＇－ＧＭＰ。醪液经０．２μｍ胶体磨破壁后分别作了自溶，酶解（５＇－磷酸二脂酶）和自溶加酶解三种处理，结果５＇－ＧＭＰ得率分别为９４．０％，９５．１％和９５．０％，未见显著差异。     

富铬啤酒酵母发酵条件的优化

通过对啤酒酵母富铬发酵条件（发酵培养基配方,发酵时间,发酵温度,接种量,培养基装量）的探讨,得到了富铬啤酒酵母发酵的最佳工艺条件,即：（１）发酵培养基配方：葡萄糖１％、酵母膏０．３％、蛋白胨１．０５％、ＫＨ２ＰＯ４０．１％、ＭｇＳＯ４７Ｈ２Ｏ０．１％、（ＮＨ４）２ＳＯ４０．１％、Ｃｒ３＋浓度０．０２ｇ／Ｌ、ｐＨ值５．１;（２）最佳吸收时间：发酵４８ｈ．（３）发酵温度：２８℃;（４）接种量：１０％;（５）培养基装量：５０ｍＬ．     

皮革废渣渗漏液中铬的测定

对皮革废渣(蓝皮屑)渗漏液中铬的二苯碳酰二肼分光光度测定法进行了研究，结果表明此方法的线性范围0-0.400mg／L，吸光度A对浓度c(mg／L)关系回归方程为：A=0．779c-0．0005，线性相关系数为0．9993，检出限为0．007mg／L，相对标准偏差小于3％，加标回收率为100％～105％，用此法对废渣渗漏液中铬的测定表明铬的形态为三价铬，因此，测定总铬时需先加H2SO4-HNO3进行消解，再以KMnO4氧化，二苯碳酰二肼显色，分光光度法测定．     

溶剂萃取石墨炉原子吸收光谱测定盐卤中痕量锂的研究

采用石墨炉原子吸收光谱，研究在盐卤中锂的原子化行为和机理．建立了热解石墨管、Ａｌ（ＮＯ３）３基体改进剂、苏丹Ⅰ－三辛基甲基氯化铵－邻二氯苯萃取分离石墨炉原子吸收测定盐卤中锂的方法．用于测定盐卤中痕量锂，特征质量为１６×１０－１２ｇ／０．００４４Ａ，加标回收率９５％～１０４％，相对标准偏差（ｎ＝１３）５．４％．     

二苯碳酰二肼离子浮选石墨炉原子吸收光谱测水中痕量铬(Ⅵ)与铬(Ⅲ)

采用二苯碳酰二肼离子浮选，石墨炉原子吸收光谱法，测定了天然水中痕量铬（Ⅵ）．铬（Ⅲ）用氧化剂氧化后，同样测定．讨论了影响铬（Ⅵ）离子浮选的一些因素，考察了多种共存离子的干扰．用于测量含铬（Ⅵ）１．０μｇ／Ｌ的水样，相对标准偏差为１．９％（ｎ＝７）．铬（Ⅵ）的标准加入回收率在９８．５％～１１０％，适于环境水样中铬的价态分析．     

非醋酐法合成DPT与pH值的关系

该文利用ｐＨＳ－２９型酸度计测定ＤＰＴ合成过程中ｐＨ值的变化，发现反应体系中ＨＡ的存在对缩合终点有极大的影响，并研究确定了合适的加氨速度（滴加氨水的时间为１２０ｍｉｎ），终点ｐＨ值以７．５～８．０为宜，以及甲醛与硝酰胺的最佳料比为６．０～３．３（摩尔比），可使ＤＰＴ得率提高至８０％。     

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