卡尔曼滤波分光光度法同时测定微量NO_3~－和NO_2~－的研究

文章在研究了ＮＯ３和ＮＯ２紫外光谱的基础上，选择了合适的测量波长范围．采用卡尔曼滤波法处理实验数据，达到了同时测定ＮＯ３和ＮＯ２含量的目的。该法操作简便、准确、使用试剂少，用于实际水样分析，获得较满意的结果，回收率为９６．５～１０４％．     

pH电位滴定法测定油田水中有机酸

应用ｐＨ电位滴定法简便快速地测定了油田水中有机酸的总量,其加标回收率在９６％￣１０３％之间,ＲＳＤ小于２．８％,讨论了共存离子的干扰及干扰消除的方法,并与等速电泳法的测定结果对照,结果满意。     

示波极谱滴定法测定工业废水中的酚

在溴化钾－盐酸底液中，用标准溴酸钾溶液作滴定剂，以溴在单微铂电极示波极谱图上的敏锐切口指示滴定终点，测定工业废水中的酚。方法的相对偏差小于１％，变异系数小于０．６％，水样加标回收率为９６％～１０４％。废水的色度、浊度等对测定不产生干扰，无须进行预蒸馏处理，测得的为可溴化酚总量，操作简便、快速。     

人发中微量铜的压电频移分析法

报导了利用压电频移分析法测定人发中的铜,方法建立在Ｃｕ２ ＋ 与Ｉ－ 反应生成Ｉ２ ,利用压电石英晶体镀银电极对Ｉ２ 的灵敏吸附性,不经萃取而直接在反应体系中测定了９ ×１０ － ７ ～１ ×１０ － ５ ｍｏｌ／Ｌ的Ｃｕ２ ＋ ,方法的灵敏度高,共存离子干扰少,相对标准偏差≤４ ．７ ％ ,回收率为９６ ．３ ％ ～１０７ ．５ ％ ．     

碳酸氢铵生产母液中烷基磺酰氯测定──混合指示剂两相滴定法

建立了应用百里酚兰（Ｔ．Ｂ）──亚甲基兰（Ｍ．Ｂ）混合指示剂测定碳酸氢铵母液中的烷基磺酰氯（活性物）含量的新方法，通过加入过氧化氢排除了硫化物干扰，方法的回收率９６％～１０３％，对实际样品测定相对标准偏差（Ｒ．Ｓ．Ｄ）≤３．３％。     

固定pH滴定法测定Vc片中抗坏血酸

本文采用固定ｐＨ滴定法测定Ｖｃ片中抗坏血酸的含量，其结果与药典法测定值一致，ＲＳＤ≤１．９％，回收率在９８．６％￣１１．６％之间，实验结果表明，该方法操作简便，分析快速，结果准确。     

阿霉素的荧光测定研究

提出荧光法测定阿霉素的新方法。阿霉素在硫酸介质中发生脱水反应生成强荧光的脱水物，反应产物荧光强度在７．３×１０＾－１０～２．２×１０＾－８ｍｏｌ／Ｌ浓度范围与阿霉素含量成正比，检出限为２．１×１０＾－１０ｍｏｌ／Ｌ。用于测定血清和尿液中阿霉素的回收率分别为８９％～９５％和９６％～１０１％，体液中常见金属离子，如Ｆｅ＾３＋、Ｃｕ＾２＋、Ｍｇ＾２＋、Ｃａ＾２＋、Ｍｎ＾２＋等，不干扰测定结果。     

环境水中痕量铅的微分电位溶出分析方法研究

本文研究了微分电位溶出法测定环境水中痕量铅的实验条件．结果表明，水样可以不经消化处理而直接测定，方法的精密度高，相对标准偏差≤５．２％，方法的准确度也满足痕量分析的要求，加标回收率为（９７．２～１０８．０）％．     

厦门西海域二氧化碳体系

由ｐＨ和碱度测定值计算了厦门西海域海水中ＣＯ＿２体系及ＣａＣＯ＿３的饱和度，结果表明ΣＣＯ＿２、和ＣＯ＿［２（．Ｔ）］的浓度分别是１．９６～２．３０ｍｍｏｌ／Ｌ、１．８２～２．１６ｍｍｏｌ／Ｌ、０．１０～０．１２ｍｍｏｌ／Ｌ和０．０１７～０．０２６ｍｍｏｌ／Ｌ。ＣａＣＯ＿３的饱和度是１５０．１％～２０８．５％。讨论了叶绿素ａ对ΣＣＯ＿２和ＣＯ＿（２（Ｔ））的影响以及ＣａＣＯ＿３饱和度与Ａｌｋ的关系。     

红外光谱法监测混合物中的3,5-二叔丁基甲苯和4-叔丁基甲苯

利用富里叶红外光谱对合成３，５二叔丁基甲苯的反应进行监测．本方法在０．０２～０．３０ｇ·ｍｌ－１范围内呈现良好线性．回收率分别为９６．８％和９６．２％，相对标准偏差为０．０３７，０．０５６．用ｔ检验法对本方法进行检验，此法准确、可靠．     

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。     

《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     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with