水中氟的快速测定

研究了在氟离子作用下能使其变色的显色体系，经试验选择了一种显色体系配以酸度调节剂、掩蔽剂、表面活性剂等，以层析纸为载体制成氟试纸，并对试纸的性能进行了试验，确定其使用方法和储存条件，实际水样用试纸法和国标法比较，测定结果基本符合，误差在半定量分析允许范围内。     

铁(Ⅲ)显色体系的研究

从pH试纸的制作中得到启发。通过对显色剂、氧化剂、缓蚀剂、缓冲体系的分别选择确定一种简便易行,效果良好的显色体系的组成成分。利用显色剂与不同浓度铁离子溶液进行显色反应制得标准色阶。将显色体系溶液喷涂到钢铁基材表面进行显色反应,对照标准色阶对钢铁锈蚀程度定量分析。     

铁（III）显色体系的研究

从pH试纸的制作中得到启发。通过对显色剂、氧化剂、缓蚀剂、缓冲体系的分别选择确定一种简便易行,效果良好的显色体系的组成成分,利用显色剂与不同浓度铁离子溶液进行显色反应制得标准色阶。将显色体系溶液喷涂到钢铁基材表面进行显色反应,对照标准色阶对钢铁锈蚀程度定量分析。     

二阶导数光谱—峰面积法测定镍

本文在镍 ( )丁二酮肟—阿拉伯胶的显色体系中 ,引入二阶导数光谱——峰面积技术 ,对显色体系及测定方法进行了研究。该法有效消除 Fe ( )离子的干扰 ,提高了准确度和灵敏度。测定镍的线性范围为 0～ 12 mg/ L ,检出限 2 . 5 6μg/ L ,表观摩尔吸光系数ε=1. 4× 10 5L· mol-1 · cm-1 。用于中药材的加收试验 ,结果满意。     

碱土(Ⅱ)-稀土(Ⅲ)-茜紫-TPC共显色体系

本文研究了“碱土(Ⅱ)-稀土(Ⅲ)-茜紫-氯化+四烷基吡啶”共显色体系,确定了最佳显色条件。此共显色是形成杂多核配合物所引起。实验结果得出:参与共显色的金属离子半径比在此共显色效应中起着重要作用,其大小在一定范围内时,共显色强度基本相同,否则共显色强度就会减弱,甚至不发生;在固定显色剂的情况下,根据半径与半径比相近寻找新的共显色体系是有一定可能的,但不同的体系有不同的最佳半径比范围;金属离子水解能力的差别对此共显色体系影响不大。     

琥乙红霉素颗粒剂溶出度方法的研究

根据国家药典委员会2010版药典品种对颗粒剂型增加溶出度检查的要求,对该品种的质量进行更有效的控制,建立琥乙红霉素颗粒的溶出度测定方法.对荷移比色法和硫酸显色法进行了比较,因硫酸显色法重现性和精密度好,灵敏度高,显色后溶液的稳定性强,显色剂易得等特点,仍沿用此方法.     

羧基化碳纳米管在分光光度法测定铜离子中的应用研究

采用羧基化碳纳米管(Carboxylic CNTs)作为增效剂,以提高Cu2+-荧光酮(PF)-十六烷基三甲基溴化铵(CTMAB)络合显色体系的吸光度,并将其应用于对铜离子的检测中。研究了羧基化碳纳米管用量及分析试剂添加顺序对显色体系的吸光度的影响,并探讨了羧基化碳纳米管的显色增效机制。结果表明,羧基化碳纳米管的添加,最大吸收峰发生明显红移,有效提高了显色体系的吸光度;0.01%碳纳米管水溶液体积为0.5mL,添加顺序依次为Cu2+→PF→carboxylic CNTs,CTMAB时,显色体系吸光度最大,其值为0.399。     

标准加入法在分光光度分析中的应用

本文提出一种修正的标准加入法用于干扰体系的分光光度定量分析。特点是仅取二个测量波长，即可同时获取待测组分及干扰组分的浓度，方法简单。利用此法对三个无机显色系统进行了分析。     

琥乙红霉素颗粒剂溶出度方法的研究

摘要 根据国家药典委员会2010版药典品种对颗粒剂型增加溶出度检查的要求，对该品种的质量进行更有效的控制，建立琥乙红霉素颗粒的溶出度测定方法。对荷移比色法和硫酸显色法进行了比较，因硫酸显色法重现性和精密度好，灵敏度高，显色后溶液的稳定性强，显色剂易得等特点，仍沿用此方法。     

有机溶剂对环糊精存在显色反应的作用及应用研究(Ⅱ) Zn~(2+)-5-Br-PADAP-β-CD-乙醇显色体系分析应用

文献[1、2]曾报道了β-CD对显色体系的影响,但有机溶剂对于β-CD存在显色体系的影响至今未见报道。本文研究了乙醇存在下,锌与5-Br-PADAP-β-CD的显色反应。实验表明,乙醇对此显色反应有明显的增敏作用。形成络合物的适宜pH范围为7.5—10.5,络合物的最大吸收波长为552nm,表现摩尔吸光系数为1.35×10~5L·mol~(-1)·cm~(-2),较无乙醇存在的三元体系灵敏度增大了1.6倍。锌在0-16μg/25ml范围内服从比尔定律。显色体系在四小时内保持稳定。用该法测定了水样中微量锌,得到令人满意的结果。     

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