流动注射分光光度法测定水中痕量正磷酸盐——乙基紫-磷钼杂多酸离子缔合物体系

在一定的酸度条件下，乙基紫与磷钼杂多酸所形成的离子缔合物于５５５ｎｍ处有一最大吸收，在此波长处试剂空白的吸收最小．基于这一事实，本文提出了直接测定痕量磷的流动注射分光光度法．方法灵敏度高，选择性好，水中常见离子不干扰痕量磷的测定，工作曲线的线性范围为０－４００μｇ／ｌ的磷，检测下限达０．７μｇ／ｌ，以１２０ｈ－１采样频率，对各种天然水样进行测定，回收率为９８．２％－１０２．５％，变异系数为０．１％－４．５％．     

用紫外双波长光度法同时测定水中酚类和苯胺类物质

紫外双波长光度法可以消除苯酚和苯胺的相互干扰 ,实现水中酚类和苯胺类物质的同时测定 ,所采用的双波长对为 2 0 9.0～ 2 39.8nm和 2 30 .0～ 2 5 3.5nm ,水样的 pH值应控制在 6 .6± 0 .2。水中K ,Na ,Ca2 ,Mg2 ,Cl-和OH-的浓度低于 2 0 0mg/L时不干扰酚类与苯胺类物质的测定 ,油类物质的干扰可通过萃取法消除。紫外双波长光度法测定酚类物质的线性范围为 0～ 2 0mg/L ,检出极限为 0 .0 5mg/L ;测定苯胺类物质的线性范围为 0～ 12mg/L ,检出极限为 0 .0 0 7mg/L。实际水样的加标回收实验和合成水样分析结果表明 ,本方法的相对误差绝对值小于 4.93% ,且操作简便、测试准确 ,可满足微量酚类和苯胺类物质的测定要求     

用紫外双波长光度法同时测定水中酚类和苯胺类物质

紫外双波长光度法可以消除苯酚和苯胺的相互干扰,实现水中酚类和苯胺类物质的同时测定,所采用的双波长对为209.0～239.8nm和230.0～253.5nm,水样的pH值应控制在6.6±0.2。水中K+,Na+,Ca2+,Mg2+,Cl-和OH-的浓度低于200mg/L时不干扰酚类与苯胺类物质的测定,油类物质的干扰可通过萃取法消除。紫外双波长光度法测定酚类物质的线性范围为0～20mg/L,检出极限为0.05mg/L;测定苯胺类物质的线性范围为0～12mg/L,检出极限为0.007mg/L。实际水样的加标回收实验和合成水样分析结果表明,本方法的相对误差绝对值小于4.93%,且操作简便、测试准确,可满足微量酚类和苯胺类物质的测定要求。     

茜素紫—乳化剂OP—H2O2—Ti（Ⅳ）化学发光体系

报道了用自行组装的流动注射化学发光分析仪，对茜素紫－乳化剂ＯＰ－Ｈ２Ｏ２－Ｔｉ（ＩＶ）化学发光新体系进行了研究．考察了测定钛的最佳条件，测定Ｔｉ（ＩＶ）的线性响应浓度为０．５×１０－７～８．０×１０－６ｇ·ｍｌ－１，检测下限达５０ｎｇ·ｍｌ－１，对２μｇ·ｍｌ－１（ＩＶ）进行了１１次重复测定，其ＲＳＤ为２．１％，对２８种常见的阴阳离子进行了干扰实验，表明方法具有较好的选择性，用于水样中钛的分析，结果令人满意．     

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．     

动力学光度法测定痕量锰的研究

本文研究了锰（II）催化高碘酸钾氧化二苯胺磺酸钠和苯胺盐酸盐显色的新指示反应及其动力学条件，建立了动力学光度法测定痕量锰（II）的新方法，反应在醋酸－醋酸钠缓冲溶液中进行，并以邻菲罗啉和草酸钠作为活化剂，本法测锰（II）的灵敏度为4．6×10^-10g/ml，线性范围是0．5－2．4ng/ml，并对铝合金，纯铝和天然水样中的痕量锰进行了测定，获得满意的结果。     

低压离子色谱法测定水样中的F^—和Cl^—

采用低压离子色谱法测定水样中的Ｆ－和Ｃｌ－，选择了最佳操作条件．测定结果表明该方法精密度好、回收率高、线性范围宽、检出限低，通过对比样品测定结果可靠，效果令人满意     

催化光度法测定天然水中痕量铁

基于α，α＇－联吡啶作活化剂，在硫酸介质中，Ｆｅ（Ⅲ）催化过氧化氢氧化甲基红褪色的指示性反应，采用固定反应时间法建立了一种灵敏度较高的测定痕量Ｆｅ（Ⅲ）的方法，其灵敏度为２．６８×１０－１１μｇ／ｍＬ，线性范围为０～０．６μｇ／２５ｍＬ，用于水样中痕量铁的测定，回收率为９０％～１０６％，相对标准偏差为３．１３％。     

高纯氧化镧ICP-AES摄谱法无基体匹配定量分析方法研究

考察了观测高度为12.5mm时，镧基体对其他共存稀土杂质元素测定的干扰效应，同时采用本研究室提出的光谱干扰系数校正法和浓度干扰因子联合校正技术有效地校正了镧基体效应，准确测定了3种不同镧基体浓度场合共存的14种稀土元素，建立了高纯氧化镧ICP-AES无基体匹配定量分析方法，样品回收率多为90％～110％，RSD％＜6%，该方法可用于纯度低于99．98％氧化镧样品的分析．     

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…

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。     

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