香兰素衍生物新型席夫碱及其配合物的合成研究(Ⅱ)

报道了由氨基酸钾盐和香兰素衍生物合成了席夫碱及它们的铜和锌的配合物.所合成的席夫碱是在氨基酸和香兰素衍生物投料的量为等物质的量的情况下,用乙醇溶液作溶剂,溶液的PH=7￣8,反应温度50￣60℃条件下进行反应,产率一般高于26.68%,用紫外光谱对产品进行了分析.     

香兰素衍生物新型席夫碱及其配合物的合成研究

报道了由氨基酸钾盐和香兰素衍生物合成了两种新的席夫碱及它们的铜和锌的配合物.所合成的席夫碱是在氨基酸和香兰素衍生物投料的量为等物质的量的情况下,用乙醇溶液作溶剂,溶液的pH=7￣8,反应温度50￣60℃条件下进行反应,产率均高于37%.用紫外光谱对产品进行了分析.     

邻香兰素-D,L-苏氨酸过渡金属配合物的合成、表征及热稳定性研究

采用分步合成法合成了以邻香兰素－D，L－苏氨酸席夫碱为配体的铜、锌、钴、镍配合物，并进行了元素分析和红外光谱表征。同时，利用差热分析对配合物的热稳定性进行了研究，得出其热稳定性次序为：钴配合物＞锌配合物＞镍配合物＞铜配合物。     

邻香兰素-L-半胱氨酸过渡金属配合物的合成、表征及抗O-.2活性研究

采用分步合成法合成了以邻香兰素-L-半胱氨酸席夫碱为配体的铜、锌、钴、镍配合物,通过元素分析、摩尔电导、紫外光谱和红外光谱等进行了表征。并对配体及配合物的清除超氧阴离子自由基O-.2的性能进行了测试。     

N，N′-双（x-甲氧基水杨醛叉缩胺乙基）草酰胺的合成

目的设计合成2种新型的对称草酰胺、席夫碱桥连配体。方法用草酸二乙酯和乙二胺合成N,N′-二（2-氨乙基）-乙二酰胺,然后再与邻香兰素、香兰素反应合成了两种最终化合物。结果合成了化合物：N,N′-双（3-甲氧基水杨醛叉缩胺乙基）草酰胺（H4Lc）和N,N′-双（4-甲氧基水杨醛叉缩胺乙基）草酰胺（H4Ld）。结论利用元素分析、红外光谱、核磁谱图、紫外光谱、熔点测定等表征手段,最终确定了两种化合物的组成结构。     

N，N′-双（x-甲氧基水杨醛叉缩胺乙基）草酰胺的合成

目的 设计合成2种新型的对称草酰胺、席夫碱桥连配体.方法 用草酸二乙酯和乙二胺合成N,N′-二(2-氨乙基)-乙二酰胺,然后再与邻香兰素、香兰素反应合成了两种最终化合物.结果 合成了化合物:N,N′-双(3-甲氧基水杨醛叉缩胺乙基)草酰胺(H4Lc)和N,N′-双(4-甲氧基水杨醛叉缩胺乙基)草酰胺(H4Ld).结论 利用元素分析、红外光谱、核磁谱图、紫外光谱、熔点测定等表征手段,最终确定了两种化合物的组成结构.     

氨基酸衍生物的电化学研究及碱性氨基酸的极谱测定

本文研究了多种氨基酸与水杨醛在碱性介质中的衍生化及其产物（席夫碱）的电化学行为。结果表明：席夫碱的生成和氨基酸的测定灵敏度受氨基酸的性质影响很大，碱性氨基酸能形成很好的极谐波，检测限低于１×１０－６ｍｏｌ／Ｌ，用此法测定了食品中的赖氨酸含量和血清中蛋白质总量，得到较满意的结果．     

两种新席夫碱的合成研究

本文报导用2，6－二氯苯胺和芳醛为原料，首次合成的两种新席夫碱的合成方法、物理性质和光谱特征．     

两种新席夫碱的合成研究

本文报导用２，６－二氯苯胺和芳醛为原料，首次合成的两种新席夫碱的合成方法、物理性质和光谱特征。     

N，N—对苯二胺基（2—羟基）二苄基膦酸四乙酯的合成及结构表征

以水杨醛，对苯二胺为起始原料合成席夫碱后，用亚磷酸酯与席夫碱加成合成α-氨基膦酸酯类阻燃剂N，N-对苯二胺基（2-羟基）二苄基膦酸四乙酯，产物经IR，∧1H-NMR ∧31P-NMR,MS确证。     

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.     

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.     

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.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-