过滤净化对铝青铜组织和性能的影响

研究了高锰铝青铜ＺＱＡｌ２－８－３－２中夹杂物的种类和形态。其宏观夹杂物有： 三氧化二铝（α－Ａｌ２Ｏ３）；莫来石（３Ａｌ２Ｏ３·２　ＳｉＯ２）；铝尖晶石．微观夹杂物有： Ａｌ２Ｏ３；ＭｎＳ·ＦｅＳ：ＦｅＯ；ＭｎＯ．并用不同的过滤介质：刚玉球、高铝砖、焦宝石、烧 石等，对高锰铝青铜进行了过滤试验．结果表明：过滤对除去高锰铝青铜中的夹杂物 有明显效果，材料的疲劳性能可提高４１．３％，延伸率最好的可提高９．７％，抗拉强 度略有提高。     

含钡低钛高炉渣硫分配系数的研究

就ＢａＯ质量含量１．０％－３．７％，ＴｉＯ２质量含量１．５％－４．０％，炉渣二元碱度（ＣａＯ／ＳｉＯ２）０．９５－１．１５的高炉渣脱硫能力进行了研究。结果表明：在实验条件下，炉渣脱硫反应是二级反应；炉渣硫分配系数Ｌｓ随二元碱度提高而提高；渣中ＴｉＯ２为３％时，Ｌｓ有一峰值。     

样品调节时间对卷烟物理指标的影响

通过对卷烟样品不同的调节时间，研究样品调节时间和卷烟物理指标（质量．长度，圈周，吸阻：硬度）间的关系。样品经过不同调节时间（2小时．4小时，8小时、16小时．24小时、48小时）后。对样品的物理指标进行测试、对比和分析。结果表明样品调节时间对卷烟物理性能中的硬度指标影响较大，调节时间越长，实测硬度越小；对质量指标稍有影响，质量实洲值随调节时间呈一定程度的上升关系；样品调节时间对其他物理性能指标影响不大。     

女性乳腺癌危险因素的Logistic回归分析

女性乳腺癌危险因素的研究资料采集于广州，韶关，肇庆等地８间大医院。按１：２配对设计，总共收集了１２５个病例一对照组作回顾性调查。经条件Ｌｏｇｉｓｔｉｃ回归分析得：保护因子有喝茶习惯，ＯＲ＝０．３９１３；危险因子有精神创伤，ＯＲ＝３．４３３８；乳腺炎史，ＯＲ＝３．４０９９；被动吸烟，ＯＲ＝２．０７９６；平均摄油量，ＯＲ＝３．１７７３；流产，ＯＲ＝１．３５４４；癌症家族史，ＯＲ＝５．６７９７。     

低温胁迫对高原水稻幼苗叶片超氧物歧化酶(SOD)活性的影响

低温胁迫对高原水稻２叶期和５叶期幼苗叶片的ＳＯＤ活性影响有差异：２叶期普遍下降；而５叶期抗寒性强的和栽培在较高海拔农业区的地区传统品种上升．室外自然光下培育的幼苗比温室人工光下培育的幼苗，其ＳＯＤ活性较高．ＳＯＤ活性随低温处理不同时间有波动；零下冰冻上升；低温处理之后再回温普遍下降．     

聚乙烯吡咯烷酮对果树叶片中POD活性的影响

用联苯胺比色法测定了玖瑰香葡萄、鸭梨、杏和毛桃叶片中ＰＯＤ活性。结果表明：不同ＰＶＰ加入量对果树叶片的ＰＯＤ活性有很大影响，ＰＶＰ加入量为０．１２５ｇ时，玖瑰香葡萄叶片的ＰＯＤ活性最大；加入０．０５ｇＰＶＰ时，杏叶片的ＰＯＤ活性最大；加入０．２ｇＰＶＰ时毛桃叶片的ＰＯＤ活性最大（叶片均取０．５ｇ左右。）     

成人癫痫患者生活质量的研究

目的：运用QOLIE量表中文版研究成人癫痫患者的生活质量及影响因素。方法：对103例患者采用随机抽样方法进行调查，用SPSS11．0软件进行统计学处理。结果：103例患者不同性别、年龄之间生活质量各因素无显著性差异；婚姻在发作担忧、精力／疲劳方面有显著性差异（P〈0．05），在生活满意度、社会功能方面有极显著性差异（P〈O．01）；不同学历在发作担忧、社会功能、总得分方面有极显著性差异（P〈O．01）；发作频率对生活质量有较大影响，与生活质量多个因素成负相关（P〈0．05）；病程与发作担忧方面、社会功能方面成负相关（P〈0．05）。结论：不同性别、年龄之间生活质量无明显不同；婚姻、学历、发作频率、病程对成人癫痫患者的牛活质量存在不同程度的影响。     

演示实验在物理教学中的功能

在物理课堂教学中充分利用演示实验，可以激发学生的求知欲．调动学生学习的积极性；有助于教师进行启发式教育和直观教学；有利于开展师生双边活动，活跃课堂教学气氛：有刊于学生在自己动手、动脑的过程中加深对所学知识的理解和巩固，使课堂教学效果更佳。     

提高物理习题训练效益的有效途径

物理习题训练是进一步加深理解基本概念和重要规律的重要手段之一。因此探索提高物理习题训练效益的有效途径，对提高教学质量有重要意义。其有效途径有：讲练适当的教学；传授学生方法与技巧；帮助学生完善认知结构；促进学生物理思雏的发展。     

物理教学中差生逆反心理的成因及对策

在物理教学过程中，差生逆反心理产生的原因主要有两方面：一是与学生的身心发育有关。物理学内容具有较强的抽象性、逻辑性、严密性和实践性，文字叙述比较严谨，学生有时能读通文字。但并不理解其含义，从而对教材的理解产生困难；探究物理问题时．不仅要从实验出发，学生的学习程序也未必都遵循从感性到理性的过程，学生开始学习时很不习惯，自然感到物理难学；抽象思维多于形象思维，动态思维多于静态思维，学生对思维方式不易跟上，产生思维上的困难，分析解决问题时，要从多方面多层次来探究和研究；二是与教学内容和教学方法有关。照本宣科的教学方法，对于有较强独立思考能力的人，容易导致逆反心理。     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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