稀土(Nd~(3+),Eu~(3+),Tb~(3+))色氨酸咪唑三元固体配合物的研究

合成了稀土色氨酸咪唑三元固体配合物,其通式为RE(Trp)3IMCl3·3H2O(Re=Nd3+,Eu3+,Tb3+,Trp=L－色氨酸,IM＝咪唑）．经无素分析、摩尔电导、红外光谱、紫外光谱和荧光光谱的测定,研究了配合物的组成和性质．     

杯芳烃衍生物与镝(III)配合物在重水中的荧光特性

水溶性杯[4]芳烃(L4)可以与Dy3+、Tb3+等稀土离子形成能量传递配合物,在水溶液中L4·Dy3+配合物的荧光易被O-H高能振动猝灭,在D2O溶液中L4·Dy3+配合物的荧光显著增强,ID/IH=8.8;水分子的O-H高能振动对L4·Tb3+配合物的荧光强度影响很小,ID/IH=1.1。选择较强激发光,可以用L4检测Dy3+,Dy3+浓度在5×10-8～10-6molL-1范围内与荧光强度有良好线性关系。     

铕、铽—8—羟基喹啉—邻菲罗啉三元固体配合物的合成和表征

以8－羟基喹啉（Hoxine),邻菲罗啉（Phen)为配体,在无水乙醇中合成了稀土（Eu3 ,Tb3 ),三元固态配合物,经元素分析,红外光谱和摩尔电导率等实验,确定稀土配合物的组成为RE（Phen)(Oxine)2Cl.H2O(RE=Eu3 ,Tb3 ),红外光谱表明配合物中存在RE－O和REN配位键。     

[RE(AGly)_2(Im)_2(H_2O)_3](ClO_4)_3·H_2O多元固体配合物的研究

在甲醇介质中 ,合成了稀土混配固态配合物 [RE( AGly) 2 ( Im) 2 ( H2 O) 3 ]( Cl O4 ) 3 ·H2 O( RE=La,Pr,Nd,Sm,Eu,Gd,Dy ;AGly-乙酰甘氨酸 ;Im-咪唑 )。通过化学分析 ,元素分析确定了配合物的组成 ;利用1H NMR,IR,UV,X-射线粉末衍射等分析 ,并结合 TG- DTG对配合物热分解机理的研究 ,讨论了配合物的配位行为。用 AMI半经验法对配体进行了结构优化 ,计算了它们的电荷分布 ,推测出该类配合物可能的结构。     

三[(6-甲基-2-吡啶甲酰胺氮氧化物)乙基]胺稀土配合物的合成、表征及荧光性质的研究

合成了新的三足配体三[(6-甲基-2-吡啶甲酰胺氮氧化物)乙基]胺及其5种稀土离子配合物(Sm,Eu,Gd,Tb,Dy).通过化学分析、元素分析、电导分析、红外光谱、1HNMR谱、MS谱、差热分析对化合物进行了表征,确定了配合物的化学组成为[REL(H2O)2(NO3)2]NO3·2O(RE=Sm,Eu,Gd,Tb,Dy),并对配合物的荧光性质进行了研究.     

若干稀土离子与酒石酸配合物的合成及表征

应用沉淀法合成了若干稀土离子（RE=Y、La、Pr、Nd、Sm、Gd、Tb、Dy）与酒石酸（H2L）的配合物,通过X射线粉末衍射、红外光谱等对配合物的结构进行了表征,测定了该系列配合物的荧光性能．实验结果表明,该类配合物的结构为RE2L3.8H2O（R＝Y、La、Pr、Nd、Sm、Gd、Tb、Dy）,且Tb2L3材料具有较好的发光性能,     

稀土与2,4-D及邻菲罗啉配合物的研究

合成钕、钆、镝、镥等稀土 (RE)· 2 ,4-二氯苯氧乙酸 (HDCP)·邻菲罗啉 (Phen)三元配合物。用化学分析法研究配合物的组成及其在不同溶剂中的溶解性能和摩尔电导等物理性质。用红外光谱、紫外光谱、热重 -差热分析等方法研究新合成三元配合物的结构及性质。确定了配合物中 RE3+ 与 DCP- 、 Phen之间的成键特性。配合物通式为 RE (DCP) 3· Phen (RE=Nd,Gd,Dy,L u;DCP=C8H5 O3Cl2 Phen=1,10 -邻菲罗啉 ) ,配合物中 RE3+为 8配位     

搀杂Ho~(3+)的二苯亚砜高氯酸镝配合物的荧光增强效应

合成了高氯酸镝二苯亚砜 ( DPSO)和不同物质量比的高氯酸镝 ( )、钬 ( )二苯亚砜搀杂配合物 Dyx Ho1-x( DPSO) 7( Cl O4 ) 3.测定了配合物的组成、IR谱、粉晶荧光激发和发射光谱 .荧光光谱测定结果表明 :配合物中 Ho3+ 对 Dy3+ 发光有敏化作用 ,当掺入 2 /1 0 0 0的 Ho3+ 时即对 Dy3+ 的发光产生敏化 ,并研究讨论了 Ho3+ 对 Dy3+ 敏化的浓度范围及敏化机理 .     

Tb-La混配―邻苯二甲酸―1,10-菲咯啉二元、三元配合物的合成与发光性质

采用共沉淀法合成Tb-La混配的邻苯二甲酸-1,10-菲咯啉二元、三元配合物,经元素分析及红外光谱确定,该系列配合物的组成为Tb(Ⅲ)xLa(Ⅲ)2-xL3·2H2O 和Tb(Ⅲ)xLa(Ⅲ) 2-x L3·phen·2H2O(L-邻苯二甲酸根,phen-1,10-菲咯啉).荧光光谱测试发现,在Tb-La 混配二元配合物中,随着Tb(Ⅲ)含量的降低,Tb的发射峰由强变弱,而在Tb-La混配三元配合物中,Tb的发射峰却明显增强,其原因可用分子内能量传递过程不同来解释.在二元配合物中能量主要被邻苯二甲酸吸收,且其激发三重态能级与Tb(Ⅲ)发射能级匹配较好,能将能量有效地传递给Tb,使 Tb的发光增强,所以当配合物中的Tb(Ⅲ)含量降低,其发光强度也随之减弱,La作为混配离子对Tb未起到敏化作用;在三元配合物中,能量主要由1,10-菲咯啉吸收,因其激发三重态能级不能与Tb能级有效匹配,能量只能经La(Ⅲ)有效传递给Tb(Ⅲ),从而使Tb的荧光增强,此时La起到了敏化作用.     

糠醛缩5-氨基水杨酸Schiff碱稀土配合物的合成与表征

以糠醛缩5 氨基水杨酸为配体,合成了未见报道的 6 种稀土配合物,运用元素分析、红外、紫外、核磁共振氢谱、热重 差热分析、摩尔电导等手段对配合物的结构进行表征,证实配合物的组成为[RE(L2 )2Cl]·0.5C2H5OH( RE=La,Nd ) 或[RE(L2)2Cl]·nH2O ( RE=Gd,Dy,Yb,Y ),配体以负一价离子四齿形式配位,配位数为9.     

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