H2SO4介质中Ce（Ⅲ）在铂电极上的氧化及其对Mn（Ⅱ）催化氧 …

在１ＭＨ２ＳＯ４，Ｃｅ（Ⅲ）在铂电极上的氧化－还原伏安图表明，电位扫描速度为０．０５０Ｖｓ＾－１时氧化峰电位Ｅｐａ＝０．９２Ｖ还原峰电位Ｅｐｃ＝０．６４Ｖ，△Ｅｐ＝０．２８Ｖ，能峰电位随扫描速度而变化，峰电流Ｉｐａ和电位扫描速度的平方根√ｖ不成线性关系：Ｃｅ（Ⅲ）在铂电极上的电荷迁移为准可逆过程，生成的Ｃｅ（ＩＶ）对Ｍｎ（Ⅱ）有均能催化氧化作用，催化电流峰电位在１．２６Ｖ处，催化反应受Ｍｎ（Ⅱ）。     

H_2SO_4介质中Ce(Ⅲ)在铂电极上的氧化及其对Mn(Ⅱ)催化氧化的研究

在１ＭＨ２ＳＯ４中,Ｃｅ（Ⅲ）在铂电极上的氧化──还原伏安图表明：电位扫描速度为０．０５０Ｖｓ－１时,氧化峰电位Ｅｐａ＝０．９２Ｖ。还原峰电位Ｅｐｃ＝０．６４Ｖ,△Ｅｐ＝０．２８Ｖ,且峰电位随扫描速度而变化,峰电流Ｉｐａ和电位扫描速度的平方不成线性关系;Ｃｅ（Ⅲ）在铂电极上的电荷迁移为准可逆过程,生成的Ｃｅ（Ⅳ）对Ｍｎ（Ⅱ）有均相催化氧化作用,催化电流峰电位在１．２６Ｖ处,催化反应受Ｍｎ（Ⅱ）离子向电极表面的扩散控制,Ｍｎ（Ⅱ）的氧化产物为ＭｎＯ２。但Ｃｅ（Ⅳ）的催化能力与其在铂电极上再生的速率有关。在本实验条件下,催化作用的效率较低。     

酞菁铁—表面活性剂薄膜修饰电极及其催化性能

将酞菁铁（ＦｅＰｃ）掺入阳离子表面活性剂双十二烷基二甲基溴化铵（ＤＤＡＢ）的氧仿溶液，并涂布于热解石墨电极表面，待氯仿挥发后即制得ＦｅＰｃ－ＤＤＡＢ薄膜电极，循环伏安实验表明，在ＫＢｒ溶液中该薄膜电极有２对还原氧化峰，第１对峰的Ｅｐｃｌ＝－０．６４Ｖ，Ｅｐａｌ＝－０．２９Ｖ（ｖｓ．ＳＣＥ）第２对峰的Ｅｐｃ２＝－１．０４Ｖ，Ｅｐａ２＝－０．９４Ｖ着重探讨了第２对峰的电化学行为，估计了该体系的电化学参     

磺胺嘧啶的极谱伏安行为研究

通过对磺胺嘧啶在多种底液中的极谱伏安行为研究，发现磺胺嘧定在ＢＲ缓冲溶液（ｐＨ４．２）和ＨＡｃ－ＮａＡｃ缓冲液（ｐＨ４．３２）中产生良好的还原峰，峰电位分别为－０．７６Ｖ和－０．７９Ｖ（ｖｓ．ＳＣＥ），在这两种底液中，峰电流或其导数峰高与磺胺嘧啶浓度在５×１０＾－７～４×１０＾－４ｍｏｌ／Ｌ和５×１０＾－６～３×１０＾－４ｍｏｌ／Ｌ范围内呈良好的线性关系，检测限为８×１０＾－７ｍｏｌ／Ｌ，可望用于     

血清白蛋白在裸银电极上的直接电化学行为

本文研究了牛血清白蛋白在裸银电极上的直接电化学行为，在ＰＨ＝７．０的ＫＨ２ＰＯ４－Ｋ２ＨＰＯ４缓冲 溶液中，ＢＳＡ在裸银电极上有一对淮可逆的氧化还原峰，当扫描速度为２０ｍＶ／ｓ．ＢＳＡ浓度为１．２＊１０＾＆－７ｍｏｌ／Ｌ时，峰电位分别为＋０．２０Ｖ和＋０．０５Ｖｖｓ．ＳＣＥ。     

钴（Ⅱ）—氟哌酸络合物波的研究

氟哌酸（ＮＦＬＸ）在０．１ｍｏｌ·Ｌ＾－１ＮＨ３－ＮＨ４Ｃｌ（ｐＨ７．５）缓冲溶液中，与钴（Ⅱ）离子形成络合物，在单扫示波极谱仪上得一良好的络合物还原波，峰电位Ｅｐ＝－１．０９Ｖ（ｖｓ．ＳＣＥ），峰电流ｉｐ与钴（Ⅱ）浓度在０．０５０～２．５μｍｏｌ·Ｌ＾－１范围内成线性关系。用电化学手段研究了该体系的性质和反应机理，实验表明该波为不可逆吸附波。     

吸附溶出伏安法测定水中痕量钴

介绍测定痕量钴的一种方法。在０．０１ｍｏｌ／Ｌ ＮＨ３·Ｈ２Ｏ－ＮＨ４Ｃｌ和１．０×１０＾－６ｍｏｌ／Ｌ酸性铬兰Ｋ（ＡＣＢＫ）溶液中，Ｃｏ（Ⅱ）产生很灵敏的还原波，其峰电位是－０．５２Ｖ（ｖｓ、ＳＣＥ）．Ｃｏ（Ⅱ）的浓度在２．０×１０＾－８￣５．０×１０＾－７ｍｏｌ／Ｌ的范围内与峰电流成直线关系，检测限是５．０×１０＾－９ｍｏｌ／Ｌ。这一方法用于测定水中痕量钴，结果令人满意。     

嘌呤的电化学还原及其动力学参数测定

根据完全不可逆过程的循环伏安理论测定了嘌呤的动力学参数．嘌呤２个峰的电子传递系数α分别为０．５和０．３,标准异相速度常数ｋｓ分别为４×１０－２ｃｍ／ｓ和２×１０－３ｃｍ／ｓ,峰电位处的正向电子传递速度常数ｋ（Ｅｐ）分别为６×１０－３ｃｍ／ｓ和５×１０－３ｃｍ／ｓ．为了估计测定这些参数的误差,定义了电化学还原过程的可逆性因子ｆｒ,并进行定理计算．２个峰的ｆｒ分别为０．６和７×１０－４,ｆｒ的大小说明测定这些参数所引入的误差较小．研究结果表明,α、ｋｓ及ｆｒ与嘌呤浓度（ｃ＊０）、线性电位扫描速度（ｖ）及ｐＨ无关;ｋ（Ｅｐ）、ｃ＊ｏ与ｐＨ无关,而与ｖ有关．动力学参数说明峰Ⅰ是准可逆过程,峰Ⅱ是完全不可逆过程,且峰Ⅰ的电子传递速度比峰Ⅱ大．     

1，10－菲罗啉－5，6－二醌伏安行为研究

在０．５０ｍｏｌ·Ｌ~（－１）ＮＨ_３－ＮＨ_４Ｃｌ缓冲溶液中，１，１０－菲罗啉－５，６－二醌有一还原伏安峰。当静止富集２ｍｉｎ，ｖ＝１００ｍＶ·ｓ~（－１）时，其峰电位Ｅ_ｐ＝－１．３１Ｖ（ｖｓ．Ａｇ／ＡｇＣｌ）。用线性扫描和循环伏安法等手段研究体系的伏安行为，特别是吸附性。实验表明，该体系属具有吸附性的不可逆过程。用于单扫示波极谱法测定，线性范围为５．０×１０~（－８）～５．０×１０~（－６）ｍｏｌ·Ｌ~（－１），其相关系数为０．９９９５。     

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。     

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.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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