粉煤灰水泥麻屑板工艺

分析了粉为灰水泥麻屑板六个主要工艺因素（亚麻屑与粉煤灰水泥的比率、水分与粉煤灰水泥的比率、水玻璃用量、ＣａＣｌ２用量、粉煤灰在水泥中的掺加量和板子密度）与板子性能之间的关系。结果表明：只要采用合适的工艺条件，用粉煤灰和水泥，以及亚麻屑作原料生产粉煤灰水泥麻屑板是可行的。     

利用废旧塑料与粉煤灰制造建筑模板的研究

利用废旧塑料（聚乙烯、聚苯乙烯、聚丙烯）与粉煤灰共混,采用热压成型的工艺制造塑料建筑模板,对模板不同配方条件下模板样品的断面形貌、密度、吸水率、冷热稳定性、冲击强度进行了研究。结果表明：随着粉煤灰用量的增大粉煤灰与废旧塑料之间的相容性变差,模板的密度与吸水率随着粉煤灰用量的增加而增大,模板的热膨胀率与冷收缩率随着粉煤灰用量的增加而减小。模板的冲击强度随着粉煤灰用量的增加而减小。     

苹果木高密度刨花板热压工艺的研究

大量苹果木被遗弃,造成资源浪费。为了解决这个问题,采用正交试验对苹果木高密度刨花板制造关键工艺参数进行研究。结果表明：（1）刨花初含水率对刨花板的理化性能不显著;施胶量对刨花板内结合强度、含水率影响显著,而对刨花板静曲强度和2h吸水厚度膨胀率影响不显著;热压时间对刨花板2h吸水厚度膨胀率影响显著,而对其它性能影响不显著。（2）苹果木高密度刨花板较优的工艺参数为：刨花含水率为6%、施胶量为13%、热压时间为300s。     

大豆蛋白胶枫木刨花板热压工艺研究

为了解决甲醛等有害物质的释放问题,使用大豆蛋白胶作为热压枫木刨花板的无甲醛胶粘剂,研究了刨花板的热压工艺.在实验室条件下,通过单因素试验分别分析了热压温度、热压时间、施胶量和密度对枫木刨花板内结合强度及表面结合强度的影响;并通过响应面设计得出最佳试验参数.结果表明,大豆蛋白胶可以用于枫木刨花板的制造,其最佳工艺参数为:热压温度180℃,热压时间27.5min,施胶量15.7%,密度780kg/m3.在此条件下,压制的板材性能均达到GB/T4897.1-2003对在干燥状态下使用的普通用板要求.     

矿物掺合料对水泥砂浆干缩性能影响的研究

在保持砂浆中单位体积用水量和骨料用量相同的情况下，分别研究粉煤灰（细度为720m^2／kg）、矿渣粉（细度368m^2／kg）、硅粉（细度为16200m^2／kg）等体积取代水泥对砂浆干缩性能影响的规律．结果表明：用粉煤灰取代水泥使砂浆干缩率下降，且取代量变化对干缩的影响不大；用矿渣取代水泥使砂浆干缩率略有增加，且取代量变化对干缩影响不大；用硅灰取代水泥使得砂浆干缩率增加，而且随着取代量增加，干缩率增加。     

含粉煤灰或矿渣与硅灰的不同组合的混凝土(英文)

本研究评价了在高性能混凝土中掺加粉煤灰－硅灰或磨细矿渣－硅灰的不同组合时的抗压强度、劈拉强度和氯离子渗透性。在水胶比０．２８～０．３３、总胶凝材料用量５００～５５０ｋｇ／ｍ３下，采用这两种矿物掺和料组合替代３０％～５０％的硅酸盐水泥时，混凝土２８ｄ抗压强度大多为８５～１００ＭＰａ，２８ｄ劈拉强度大多为５．５～６．５ＭＰａ，并具有高工作性和很低的氯离子渗透性；混凝土的早期强度发展快，而且后期强度持续增长。含粉煤灰－硅灰或矿渣－硅灰的不同组合的混凝土的劈拉强度与抗压强度的比值为０．０６３～０．０６６。不存在一个对于抗压强度和劈拉强度都是最佳的掺和料组合。     

大掺量粉煤灰注浆充填材料试验研究

为了解大掺量粉煤灰的水泥粉煤灰注浆材料的物理力学性能，通过室内试验，探讨了在大掺量粉煤灰情况下，不同水灰质量比，固相质量比及不同外加剂用量与硬化体抗压强度，浆体凝结时间，流动度、粘度、结石率之间的相互关系，试验表明，随粉煤灰掺量的增加，硬化体抗压强度、浆体流动度降低，而凝结时间延长，结石率和粘度增大；硬化体早期强度较低，后期强度有较大增长（120d后仍有所增长）；适量水玻璃的掺入（水玻璃占水泥质量分数不大于3％）使凝结时间缩短，结石率增大，但导致硬化体抗压强度降低，浆体流动性变差；浆体凝结时间较长，水灰质量比（0．7－1．0）：1．0，粉煤灰掺量质量分数为60％－90％时，初凝一般大于12h，终凝一般大于20h。     

不同硬化水泥浆体中氯离子扩散和孔溶液的研究(英文)

分别采用扩散电池法（ＤＣＭ）和孔溶液挤出法（ＰＳＣＭ）研究了不同类型的硬化水泥浆体中Ｃｌ－的扩散量以及ＯＨ－、Ｃｌ－的浓度。根据由Ｃｌ－扩散量和（Ｃｌ－／ＯＨ－）比值得到的有效扩散系数Ｄｅ，研究讨论了大水泥中掺入矿渣和各种粉煤灰对扩散量和孔溶液组成的影响。     

聚苯乙烯球与大掺量粉煤灰水泥基复合制备轻质多孔墙板的研究

现采用高性能粉煤灰活性激发剂技术，研制成了粉煤灰掺量达７０％的粉煤灰－水泥－矿渣－石膏系统的新型复合水泥基材。采用了表现密度３５ｋｇ／ｍ＾３的发泡聚苯乙烯球为轻集料，在成型工艺上采用表面活性剂和裹浆加压成型技术，解决了界面粘结不好和物料分层现象。从而研制了大掺量粉煤灰聚苯乙烯球复合新型轻质多孔墙板。该墙体材料容重仅为５７５ｋｇ／ｍ＾３，并具有良好的保温，隔热性能，各项性能指标达到，超过了有关标准要     

镍电解液萃取净化研究-用二(2.6-二甲基-4-庚基)磷酸萃取净化流程的数学模型及最优化计算

本文提出用二（２．６－二甲基－４－庚基）磷酸［ＨＤ（ＤＩＢＭ）Ｐ］作为萃取剂，用于镍阳极电解液中的Ｎｉ２＋、Ｃｏ２＋、Ｃｕ２＋和Ｆｅ３＋的萃取分离流程。在一定的工艺条件下，测定了各种金属离子的平衡数据，建立了Ｎｉ２＋、Ｃｏ２＋、Ｃｕ２＋和Ｆｅ３＋的分配模型。并在此基础上，针对含有 １４０ 克／升 ＳＯ４－２和 ４０克／升 Ｃｌ－的镍阳极电解液体系对其中 Ｎｉ２＋、Ｃｏ２＋、Ｃｕ２＋分离工艺进行了最优计算，并确定了水法处理该溶液的萃取流程。所得最优工艺参数为：温度＝５０℃；ＨＤ（ＤＩＢＭ）Ｐ浓度＝０．２３Ｍ； ｐＨ＝５，７４； ３级，有机相对于水相流比Ｏ／Ａ＝０．３１。此时，镍回收率为９９％，钴回收率为９４．１％，铜回收率为９９．９９％。此项研究由北京第五研究所提供萃取剂。     

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.     

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.     

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-     

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     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of