环境水样中亚硝酸根的在线光度法监测

本文将流动注射分析技术引入Ｎ－（１－萘基）乙二胺光度法测定亚硝酸根的分析体系，建立了水样中微量亚硝酸根在线检测方法。亚硝酸根含量在０—５００ｕｇ／Ｌ范围内具有良好的线性关系，检出限为１．０ｕｇ／Ｌ亚硝酸根氮，此法操作简单，灵敏度高，适用于环境水样中亚硝酸根的实时性检测。     

催化荧光光度法测定痕量亚硝酸根

基于在稀硫酸介质中,亚硝酸根催化溴酸钾氧化罗丹明Ｂ,建立了催化荧光光度法测定痕量亚硝酸根的新方法。方法检出限为２．４７×１０－６ｇ／Ｌ,线性范围为６～１３０μｇ／Ｌ,用于直接测定水样中亚硝酸根。     

Ce（Ⅳ）—罗丹明B化学发光体系测定痕量亚硝酸根

本文报道了亚硝酸根离子可以对Ｃｅ（Ⅳ）－罗丹明Ｂ化学发光体系产生抑制作用的实验事实,建立了测定痕量亚硝酸根离子的化学发光新方法．检出限为１．４×１０－８ｍｏｌ／Ｌ;线性范围为１．０×１０－７～４．０×１０－５ｍｏｌ／Ｌ．用于实际水样中亚硝酸根离子的测定,结果满意．     

流动注射测氟仪测定尿氟含量

本文提出了用Ｆ－１型流动注射测氟仪测定尿氟含量的方法，此方法具有分析速度快、准确度高和使用试剂少等优点，测定样品含氟浓度为０．３１９ｍｇ／Ｌ时，回收率为９８．２％，变异系数为１．６％，进样量为１００μＬ，分析速度６０次／ｈ，线性范围０．０５－１０ｍｇ／Ｌ。     

流动注射荧光熄灭法测定痕量磷酸根离子

研究了以铝－ 桑色素为荧光试剂, 在酸性条件下利用荧光熄灭法, 并结合了流动注射分析测定了水中微量磷酸根离子的方法． 测定ＰＯ３ －４ 的线性范围１ ～９ ｍｇ／Ｌ, 检测限为０－００２ ｍｇ／Ｌ, １ｈ可以测定６０ 份样品, 相对标准偏差为１－０９ ％ ．     

动力学抑制光度法测定痕量铁

在ｐＨ８．３的硼酸－氢氧化钠缓冲溶液中，Ｆｅ（Ⅲ）对过氧化氢氧化罗丹明Ｂ的褪色反应有阻抑作用．据此，本文以固定时间法对反应条件进行了选择，建立了动力学光度法测定痕量铁的新方法．可测范围：０～０．０４ｍｇ／Ｌ，灵敏度：９．２０×１０－７ｇ／Ｌ，用于试剂级盐酸和硝酸中微量铁的测定，相对标准偏差分别为６．０％和５．３％，平均加标回收率为９７．３％和９７．５％     

高系一四甘薯茎尖培养及快繁技术研究

通过筛选培养基，研究了高系一四甘薯茎尖培养及快速繁殖的方法，结果表明，ＭＳ＋６－ＢＡ０．１０－０．２５ｍｇ／Ｌ，ＩＡＡ０．０１ｍｇ／Ｌ或ＮＡＡ０．０５ｍｇ／Ｌ，ＧＡ０．０５ｍｇ／Ｌ是较好的茎尖诱导培养基，茎尖的萌动率为８０％以上，６５ｄ即可一次成苗。     

动力学光度法测定药物、果蔬中的抗坏血酸

基于在硫酸介质中, 抗坏血酸对草酸根加速重铬酸钾－ 碘化钾／ 罗丹明６Ｇ 这一反应体系具有抑制作用, 建立了动力学抑制光度法测定抗坏血酸的新方法． 方法的线性范围为０－１０ ～４－００ｍｇ／Ｌ, 检出限为０－０８ｍｇ／Ｌ． 该方法已用于维生素Ｃ 药片、维生素Ｃ注射液、西红柿、橙子、西芹、西瓜皮中抗坏血酸的测定, 结果令人满意．     

枣快速繁殖技术研究

通过三年对枣树组织培养的研究和实践应用，结果表明，适宜的灭菌时间为７５％的乙醇５．７ｓ，０．１％升汞１０ｍｉｎ。适宜的激素配比为６－ＢＡ３４ｍｇ／Ｌ＋ＮＡＡ０．０１ｍｇ／Ｌ，适宜生根的激素为ＩＢＡ０．４－０．６ｍｇ／Ｌ。     

一种DNA的微量荧光分析新方法

建立了用１０ ,１０′－ 二乙基－ ２ ,２′－ 二磺酸基－ ９ ,９′双吖啶（ＤＥＤＳＢＡ） 检测微量ＤＮＡ 荧光分析新方法, 其线性范围为１－０ ～１０－０ ｍｇ／Ｌ; 检测限为０－４６ ｍｇ／Ｌ; 测定浓度为５－０ ｍｇ／Ｌ; ＤＮＡ 溶液的相对标准偏差为０－８ ％ ．     

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.     

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     

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