二阶导数光谱法同时测定铝和钛的研究

建立了二阶导致光谱法同时测定铝和钛的新方法，该法简便、快速、灵敏度高．方法对钛线性范围为０～０．６４μｇ／ｍｌ，对铝线性范围为０～０．４８μｇ／ｍｌ．应用于冶金样品中铝、钛的测定，结果满意．     

有机相酪氨酸酶生物传感器

基于有机介质中水分对酪氨酸酶电极电流信号的增强作用，构建了一个测定有机介质中微量水分的有机相生物传感器，该传感器可测定乙醇中体积分数０．０５％～１．００％水，检出限为体积分数０．００％水，采用ＦＩＡ系统可测定乙腈中体积分数为０．１％～１．０％水检出限为体积分数０．０１％水，精密度高。     

双体系双波长荧光光度法同时测定色氨酸和酪氨酸的研究

本文提出双体系双波长荧光测定方法，用于色氨酸，酪氨酸的同时测定，结果满意，测定范围分别为０￣１０．０μｇ／ｍＬ和０￣５．０μｇ／ｍＬ。     

固定化酶管安培法快速测定青霉素

整个测定系统由固定化青霉素酶管、流动注射分析仪及碘分子检测池组成。测定原理基本上同碘量滴定法，即青霉素经酶管转化为青霉素噻唑酸，该酸与碘分子发生定量反应，剩余的碘用电化学方法检测。实验表明：测定线性范围为０．０５～０．９０ｍｏｌ／ｍ￣３（取样４０μＬ），线性相关系数为０．９９２。对０．６ｍｏｌ／ｍ￣３的青霉素反复测定１０次，平均值为６２．４９μＡ，变异系数为１．２０％。当青霉素浓度低于１．０ｍｏｌ／ｍ￣３时，条件在一定范围的波动（磷酸盐浓度为０．０５～０．２５ｍｏｌ／ｍ￣３，ｐＨ为６．０～７．５，测定温度１５～２５℃），对测定结果几乎没有影响，测定速率可达每小时１２０个样品。此系统不变，在室温下（８～２０℃）使用时，每天约测４００个样品，酶管使用３０ｄ，未见活力下降。４℃下保存１０个月，酶管活力未见明显下降。     

催化荧光法测定痕量锰

在酸性介质中及活化剂氨三乙酸存在下，锰对高碘酸钾氧化还原型二氯荧光素的反应有催化作用，据此提出了催化荧光法测定痕量锰的新方法．方法的线性范围为０．０４～１．０ｎｇ／ｍｌ，检出限为０．０１３ｎｇ／ｍｌ．常见离子基本上不干扰测定．将方法用于人发、面粉、蔗糖、扒皮鱼、自来水中锰的测定，回收率为９５％～１０４％．     

溶出伏安法测定痕量锌

报道了一种测定痕量锌离子的灵敏的电分析方法。在ｐＨ＝４．５的２．０×１０￣（－２）ｍｏｌ／ＬＨＡｃ－ＮａＡｃ溶液中，锌－钛铁试剂络合物在－０．８１Ｖ产生一灵敏的吸附还原峰，峰电流与锌离子的浓度在０．０５－２．０μｇ／ｍＬ范围内成线性关系，最低检测限为０．０１μｇ／ｍＬ．拟定了测定痕量锌的方法，应用于粮食中锌的测定，结果令人满意．     

pH法测定复合氨基酸铜中的氨基酸含量

用ＥＤＴＡ做掩蔽剂，调节ｐＨ值至７加入甲醛，用ＮａＯＨ溶液滴至ｐＨ＝８．７，测定复合氨基酸含量．测定快速、准确，标准偏差０．３６，相对标准偏差０．５８％，氨基酸的回收率大于９５．２％．     

毛细管气相色谱法测定706代血浆中残留甲醇、乙二醇的含量

本文采用内标法，以丙二醇为内标物，应用上分１００２型气相层析仪测定羟乙基淀粉代血浆中残留甲醇和乙醇的含量。选用天津试剂二厂弹性石英交联聚乙二醇—２０Ｍ毛细管色谱柱，以氢火焰离子化检测器检测，氮气为载体，分流进样．当甲醇和丙二醇内标物浓度比为０．０２：１～０．３２：１，乙二醇和丙二醇内标物浓度比为１．０：１～４．０：１时，被测物质峰面积与浓度呈线性关系，测定了甲醇和乙二醇的相对定量校正因子．甲醇平均测定回收率为９８．７９％，相对标准偏差ＣＶ＝０．０１３％，乙二醇的平均回收率为９７．７７％，ＣＶ＝０．０１１％．     

光化学伏安法测定头孢氨苄

在ｐＨ４．０Ｂｒｉｔｔｏｎ－Ｒｏｂｉｎｓｏｎ缓冲溶液中，头孢氨苄在紫外光照射下生成具有电活性的产物，其峰电位为－０．８０Ｖ（ｖｓ．ＳＣＥ）据此建立了一个检出限和测定范围分别为０．０２ｍｇ／Ｌ和０．０５～３．０ｍｇ／Ｌ头孢氨苄的光化学分分析法，并用于溶酶菌－头孢氨苄复合物中头孢氨苄的测定。结果满意。     

荧光素-番红花红T能量转移体系的研究及其作为核酸荧光探针的应用

研究了以能量转移作为核酸荧光探针的可能性，提出利用能量转移体系测定ＤＮＡ的新方法．该方法灵敏、快速，重现性好，ＤＮＡ测定的线性范围是０．０５～１０ｍｇ／Ｌ，检测限为０．０４７ｍｇ／ＬＣＴＤＮＡ（ｎ＝１１）．     

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)

正~~     

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