中兽药的研究发展

为了满足无公害安全食品的发展需求,提出了开发应用中兽药及中兽药饲料添加剂的重要性,分析了中兽药的特点及其发展条件,介绍了国内外中兽药研究应用现状,并针对中兽药存在的问题,提出了解决对策。     

构建目标教学 提高学生的学习兴趣

人,生活中有了目标才有乐趣,工作中有了目标才有动力,学习中有了目标才有兴趣。     

信息可视化中色彩的应用研究

阐述了信息可视化中色彩的基本理论,从信息可视化中对色彩的认知过程入手,论述了信息可视化中色彩的使用原则,介绍了信息可视化中色彩的应用方式。     

Quantale中的模糊理想

首先给出了Quantale中模糊理想的概念.其次,研究了Quantale中模糊理想的性质,得出了Quantale中模糊理想与理想之间的关系.最后给出Quantale中模糊理想扩张的定义,并研究了其性质,得到了在Quantale中模糊理想的扩张还是模糊理想的结论.     

关于渐近中位无偏估计的渐近效率(英文)

本文在几种重要的分布族中,给出了渐近中位无偏估计的渐近效率的一种定义。给出了如下一些结果：在单参数族中,提出了构造渐近有效的渐近中位无偏估计的一种方法,在具有共同支撑集的分布族中,论证了渐近中位无偏有效估计与ＢＡＮ估计之间的等价值;而在非共同支撑集的截断族中,对一般的参数向量函数构造了它们的渐近中位无偏估计,并且计算出了它们的渐近效率。     

浅谈山西省水产品中重金属超标的防范措施

简述了山西省的水产品现状,分析了水产品中重金属的来源,详细介绍了水产品中重金属含量的监测及分析方法,探讨了降低水产品中重金属含量的措施。     

煤中微量元素及其在燃烧过程中释放的研究现状

对煤燃烧过程中微量元素释放的国内外研究现状进行了综述。描述了煤中微量元素的含量分布 ,总结了燃烧气体与固体产物中微量元素的形态、分布及富集特性 ,阐明了燃烧过程中微量元素形态转变机理。最后 ,简单介绍了微量元素的释放控制方法和技术 ,并探讨了微量元素今后研究的若干方向。     

催化裂化装置中两器部分管道设计探讨

阐述了催化裂化的相关概念,分析了催化裂化装置的主要类型、基本组成,探讨了催化裂化装置中反应器与再生器中管道的特殊要求,提出了催化裂化装置中反应器与再生器中部分管道设计与实现应当把握的原则、方法。     

中留水库除险加固的必要性及措施

介绍了中留水库的基本情况,分析了中留水库大坝存在的问题,探讨了中留水库除险加固的措施。     

草酸电解过程的连续操作与控制

本文总结了草酸电还原制乙醛酸过程中连续操作中存在的问题,提出了相应的解决办法,并在实验中取得了较好的效果。     

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