一种新型二维铜配合物的水热合成及其晶体结构

以硫酸锌和氟康唑为原料采用水热法合成一种新型配位聚合物．单晶X2射线衍射实验表明，标题化舍物属于单斜晶系，C2／c空间群，晶胞参数为a=15．902（2）A，b=17．996（2）A，c=12．9224（18）A，β=96．240（2）A，V=3676．2（9）A3Z=4．每个铜离子分别与4个不同氟康唑配体上的三唑氮原...     

黄山栾果与栾果中维生素含量的研究

用高效液相色谱法测定了黄山栾果与栾果中的维生素A，D，E含量，结果表明：黄山栾果中维生素A的含量为22．29～70．28IU/g，维生素D2为0．223～2．117IU／g，维生素E为0．254-3．059mg／100g；栾果中维生素A的含量为43．95—91．71IU／g，维生素D2为0．035—2．707IU／g，维生素E为0．165-7．002mg/100g．综合其营养价值，黄山栾果和栾果在产品开发和利用上有较广阔的前景．     

相异加项的和集

设A，B为z的有穷子集，|A|=k，|B|＝l．记 S(A，B)={a+ba∈A，b∈B，a≠b}． 当k≠l时，|S(A，B)|≥k+l-2．本文给出了4≤k＜l时|S(A，B)|达到下界的充分必要条件．     

宾川柑橘根际捕食线虫真菌资源的调查

调查2007年至2008年宾川不同地点柑橘园里捕食线虫真菌的季节性分布，采集了400份土样，共分到了23个种，属于3个属，其中新种1个，中国新记录种2个。检出频率较高的是Arthrobotrys oligospora，A．musiformis和A．dactyloid，其次是Monacrosporiam ellipsosporum，M．thaumasium和M．eudermatum，优势种是A．oligospora，A．mltsiformis和A．dactyloid，捕食线虫真菌种类最多的是在夏季，其次是春季，最少的是秋季和冬季。     

一致局部上同调零化子和多项式扩张

A是有限雏Noether环．证明了：如果环A有一致局部同调零化子，则A上的r元多项式环A[X1，X2，…，X]也有一致局部同调零化子．     

逻辑函数对偶式的最小项的求法

讨论逻辑函数F(A1，A2，……，An)与F‘(A1，A2，……，An)的最小项的关系，解决由A1，A2，……，An的最小项直接求出F‘(A1，A2，……，An)的最小项，从而直接求出F‘(A1，A2，……，An)的第一范式．     

利用球面距离求地球表面距离的技巧

所谓球面上2点的球面距离，是指过这2点的球大圆，以这2点为端点的劣弧的长．设球半径为r，A、B是球面上2点，AB是过A、B的球大圆的劣弧，它所对的圆心角为α弧度，那么A、B间的球面距离C是：C＝αr．因为地球表面上2点的位置，都是由经、纬度来确定的，所以计算地球表面上2点的距离均与经纬度有关．通过笔者多年来的教学实践和探索，总结出求地球表面上2点的球面距离的老干技巧．现写于后，供参考、指正．1同纬度2点的球面距离若A、B两点均在北（南）纬度a度，求A、B两点的球面距离的步骤是：（1）由A、B两点纬度计算纬线圈的半径（…     

电阻隔离测试技术的硬件电路实现

介绍了低值电阻的隔离测试技术，阐述基本方法及理论．在系统组成的框架上，应用单片机、A／D、D／A模块实现硬件电路的设计．简述了A／D、D／A模块的基本结构和与单片机的接口设计．在D／A模块设计中，采用8位精度DAC2级锁存器实现16位的精度．通过台面试验，基本满足设计的测量要求．     

Sn的三个定理

我们应用连通方法，研究n维球S^n（n≥2）A包含S^nS^n／A连通？我们给出定理1，定理2．对S^3，存在三个切向量．     

Pb-Ag-Ca新型阳极在MnSO_4-H_2SO_4溶液中腐蚀速度的测定

分别测定了PAC电极（Pb－Ag－Ca新型阳极的简称）在MnSO4－H2SO4溶液中的阴极极化曲线（以～lgi作图）及阳极极化曲线，从图中求得：icor＝15．85μA／cm2，cor＝－0095v，Vcor＝2．95Kg／m2ann．7．09％（电极重量每年消耗的百分数）io（2）=54．70μA/cm2及io（3）=1．10μA／cm2；讨论了PAC阳极的腐蚀机理即反应（2）受反应（3）的动力学参数所控制，为EMD工业中使用该阳极提供基础性数据．     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the