胶束增敏荧光光度法测定苯甲酸雌二醇的研究

本文报道了高灵敏度荧光增效法测定苯甲酸雌二醇（ＥＢ）的新方法。在表面活性剂溴化十六烷基三甲铵（ＣＴＭＡＢ）存在下，测定下限为４．０×１０－９ｍｏｌ·Ｌ－１，线性范围为４．２×１０－９～３．８×１０－６ｍｏｌ·Ｌ－１。本法应用于样品中苯甲酸雌二醇的测定，结果满意。     

表面活性剂增敏四环素碱性降解荧光法研究

提出了表面活性剂增敏的碱性降解荧光法测定四环索新方法，四环素在０．５ｍｏｌ／ＬＮａＯＨ溶液中反应，生成强荧光降解物，加入十六烷基三甲基溴化铵后。四环素荧光强度增强１５０倍，浓度在９．０×１０￣（－９）～１．０×１０￣（－６）ｍｏｌ／Ｌ范围内荧光强度与四环素含量成正比。本法成功地用于尿液和血清中四环素的回收测定。     

苯基荧光酮荧光光度法测定微量锡的研究

本文应用表面活性剂存在下的胶束增溶，增敏，增稳作用，研究了溴化十六烷基三甲基铵胶束体系中，苯基荧光酮测定微量锡的荧光法及其条件，于０．６－１．０ｍｏｌ／Ｌ酸度下，试剂与锡形成橙红色的胶束络合物。在λｅｘ／λｅｍ＝５３２ｎｍ／５８５ｎｍ处产生强荧光，线性范围０－１０．０μｇ／２５ｍｌ，最低检出限１．２ｎｇ／ｍｌ，相对标准偏差３．８％《     

铜在8－羟基喹啉修饰铅笔芯电极上的伏安特性

本文用８－羟基喹啉修饰的铅笔芯电极研究了铜的阶梯阳极溶出伏安特性，并将此法用于人发中微量铜的测定。实验指出，在此修饰电极上，铜的阶梯溶出峰有两个，１＃峰电位在－０．０３Ｖ，２＃峰电位在０．２７Ｖ处。同样的试液和条件下，１＃峰总比２＃峰的峰电流大。实验研究了测定铜的最佳条件，并测得铜的浓度在４．０×１０－８～１．６×１０－６ｍｏｌ·Ｌ－１范围内，１＃峰的峰高与浓度呈良好的线性关系，最低检测限为２×１０－８ｍｏｌ·Ｌ－１。２＃峰高与铜的浓度在６．０×１０－８～１．６×１０－６ｍｏｌ·Ｌ－１范围内也有较好的线性关系，也可用于测定铜。本文还分析了铜在修饰电极上的反应机理     

用荧光法测定蔬菜中的微量抗坏血酸

对抗坏血酸增强钙黄绿素－ＣＵ（Ⅱ）－ＮＨ４ＳＣＮ体系荧光强度进行了研究．结果表明：在实验条件下，抗坏血酸的浓度在１．０×１０－６～８．０×１０－６ｍｏｌ／Ｌ范围内与体系的荧光强度有良好的线性关系，检测限为１．０×１０－６ｍｏｌ／Ｌ．方法已用于测定蔬菜样品中的微量抗坏血酸．     

动力学测定痕量邻菲罗啉的研究

研究发现在酸性介质中，痕量邻菲罗啉能灵敏地加速过氧化氢氧化二甲苯胺蓝褪色的指示反应。研究了该反应的最佳条件及动力学参数，建立了一种测定痕量邻菲罗啉的新方法。方法检测限为１．０７×１０－８ｍｏｌ·Ｌ－１邻菲罗啉，测定范围为０～６×１０－６ｍｏｌ·Ｌ－１邻菲罗啉，用于测定试样中痕量邻菲罗啉，获得了满意的结果。     

钼－桑色素配合物的极谱波研究与应用

在ｐＨ２．１的硫酸－２．９６×１０－６ｍｏｌ／Ｌ桑色素－０．１７２ｍｏｌ／Ｌ氯酸钾底液中，钼在－０．４３Ｖ（ＳＣＥ）有一灵敏的极谱催化波，可用于测定微量钼．线性范围１．０４×１０－９～２．５０×１０－８ｍｏｌ／Ｌ，检出限１．８８×１０－１０ｍｏｌ／Ｌ．　极谱催化波法直接应用于三氧化钨光谱标样中微量相的测定，方法简便，准确可靠。     

丁基罗丹明B—钨酸钠—PVA高灵敏光度法测定痕量钯的研究

研究了在聚乙烯醇（ＰＶＡ）存在下,钯与钨酸钠和丁基罗丹明Ｂ（ＢＲＢ）反应形成的有色离子缔合物用于痕量钯的光度法测定．最佳条件为：［Ｈ２ＳＯ４］＝１．２ｍｏｌ·Ｌ－１,［ＷＯ２－４］＝９．１×１０－５ｍｏｌ·Ｌ－１,［ＢＲＢ］＝３．０×１０－５ｍｏｌ·Ｌ－１．缔合物的最大吸收位于５７５ｎｍ处,表观摩尔吸光系数ε＝７．９８×１０７Ｌ·ｍｏｌ－１·ｃｍ－１．钯量在０～１０ｎｇ／２５ｍｌ范围内服从比尔定律．体系至少稳定１４０ｈ,检测限（３σ）０．０４８μｇ·Ｌ－１（ｎ＝１０）,对０．４０μｇ·Ｌ－１Ｐｄ（Ⅱ）测定的相对标准偏差为３．３９％（ｎ＝１１）．缔合物的摩尔比为Ｐｄ∶ＢＲＢ＝１∶４．考察了５０多种共存离子的影响．本法已用于炭基和铝基钯催化剂中微量钯的测定,结果满意     

钨的极谱波研究及钼精矿中钨的测定

在ｐＨ２．３的磷酸－１．１８×１０（－５）ｍｏｌ／Ｌ桑色素底液中，钨在－１．１４Ｖ（ｖｓ．ＳＣＥ）有一灵敏的极谱波，可用于微量钨的测定．线性范围４．３５×１０（－１０）～２．１８×１０（－８）ｍｏｌ／Ｌ，检出限４．１４×１０（－１１）ｍｏｌ／Ｌ．直接应用于钼精矿中钨的测定，方法简便快速，结果准确．     

镍(I)-4-(对-重氮氨基苯甲酸)偶氮苯-吐温20显色反应的研究

提出用４－（对－重氮氨基苯甲酸）偶氮苯进行镍的光度方面研究，并探讨了混合表面活性剂存在时对显色反应的增敏情况．研究结果表明：镍与显色剂可形成１∶２的络合物，在ｐＨ＝１０．７０～１１．１０范围内，其表观摩尔吸光系数为１．４５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，若采用双波长法测定摩尔吸光系数可提高至１．９６×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，在０～８μｇＮｉ２＋／２５ｍＬ内，服从比尔定律，大多数外来离子不干扰，用于环境样品和铝合金中镍的测定，回收率在９６％～１１０％之间，结果令人满意     

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