氧化物陶瓷与Ag－Cu－Ti钎料的界面反应

研究了氧化铝和氧化铬陶瓷真空钎焊时陶瓷与Ａｇ－Ｃｕ－Ｔｉ钎料合金的界面反应，分析了加热温度（１０７３～１３２３Ｋ）和保温时间（０～３．６ｋｓ）对界面反应的影响规律，扫描电镜和Ｘ射线衍射分析结果表明：两种陶瓷均与Ａｇ－Ｃｕ－Ｔｉ合金发生反应，反应层厚度随着温度和时间的增加而增加，对于氧化铝陶瓷，低子１１２３Ｋ时，反应产物为Ｃｕ２Ｔｉ４Ｏ和ＡｌＴｉ；在１１７３Ｋ以上温度时反应产物则为Ｔｉ２Ｏ、ＴｉＯ和ＣｕＴｉ２，此时，反应层是按Ａｌ２Ｏ３／Ｔｉ２Ｏ＋Ｔｉ０／Ｔｉ２Ｏ＋ＴｉＯ＋ＣｕＴｉ２／ＣｕＴｉ２／Ａｇ－Ｃｕ呈层状过渡分布，对于氧化锆陶瓷，在整个试验温度范围，反应产物均为γ－ＡｇＴｉ３和δ－ＴｉＯ，反应产物也是按ＺｒＯ２／δ－ＴｉＯ／δ－ＴｉＯ＋γ－ＡｇＴｉ３／γ－ＡｇＴｉ３／Ａｇ－Ｃｕ呈层状过渡分布的．     

纺锤形铁黄α－FeOOH微晶合成动力学研究

本文对纺锤形α－ＦｅＯＯＨ微晶合成动力学过程进行了研究．利用复相反应经验动力学方程，考察了初始浓度、反应温度和空气流量对Ｆｅ（ＯＨ）２－ＰｅＣＯ３悬浮液氧化速率的影响，确定了α－ＦｅＯＯＨ成核－生长速率方程，证实了晶粒生长阶段存在溶解－氧化的动态平衡，根据活化能大小，推断相界面氧化反应为该复相反应的控制步骤，还对α－ＦｅＯＯＨ成核生长微观机理作了初步探讨．     

酒石酸－BrO_3~－－Mn_（2＋）－H_2SO_4－丙酮体系的振荡反应

根据ＦＫＮ振荡机理，本文报道酒石－ＢｒＯ３－Ｍｎ２＋－Ｈ２ＳＯ４－丙酮体系的化学振荡反应．     

1－羟基－2－（2－苯并噻唑偶氮）－8－氨基－3，6－萘二磺酸试剂的应用和性能研究

本文对一新合成的偶氮试剂－１－羟基－２－（２－苯并噻唑偶氮）－８－氨基－３，６－萘二磺酸（ＨＢＡＤ）作为酸硷指示剂及和某些金属离子的显色反应进行了研究。该试剂用做酸碱指示剂，其变色域为５．４０（紫红）－７．００（纯兰），指示剂离解常数ｐＫ＿（１ｎ）。为６．７０（２０℃）。在滴定终点时，变色敏锐。用该试剂作为指示剂对Ｈ＿２ＳＯ＿４、ＮａＯＨ和ＮＨ＿３Ｈ＿２Ｏ的含量进行丁滴定分析，获得了较满意的结果。该试剂在适当的ｐＨ条件下可和Ｃｕ￣（２＋）和Ｎｉ￣（２＋）等金属离子发生显色反应。     

C_（11）H_（23）COOH－CCl_4－H_2O－LiCl体系的化学平

研究了一定条件下月桂酸－四氯化碳－水－氯化锂体系中反应的热力学平衡，讨论了水相中锂离子浓度和ｐＨ值对该体系有机相中ＡＣＯＯＬｉ含量的影响．     

MTPP－CeO_x－SiO_2催化NO_x还原

在密闭循环反应器中，于２９０℃下研究了ＣＯ存在下催化剂ＭＴＰＰ－ＣｅＯ＿ｘ－ＳｉＯ＿２（Ｍ＝Ｃｏ￣（２＋）、Ｎｉ￣（２＋）、Ｃｕ￣（２＋））催化还原ＮＯ或Ｎ＿２Ｏ的反应。催化ＮＯ还原的活性顺序是ＮｉＴＰＰ＞ＣｏＴＰＰ＞ＣｕＴＰＰ，而Ｎ＿２Ｏ还原和ＮＯ深度还原为Ｎ＿２的顺序是ＮｉＴＰＰ＞ＣｕＴＰＰ＞ＣｏＴＰＰ。ＮＯ＿ｘ还原的催化特性和ＭＴＰＰ的电化学氧化机理有关（取决于中心金属或卟啉环被氧化的次序）。ＣＯ不仅还原ＮＯ＿ｘ而且还促进载体Ｃｅ＿２Ｏ＿３物种的形成。探讨了ＮＯ催化还原的机理。     

在Pr_3N－P_2O_5－Al_2O_3－H_2O体系中合成AlPO_4－5分

选用三正丙胺为模板剂．采用水热晶化法合成ＡｌＰＯ４－５分子筛。在Ｐｒ３Ｎ－Ｐ２Ｏ５－Ａｌ２Ｏ３－Ｈ２Ｏ体系中研究了水热晶化条件──模板剂用量、反应混合物ｐＨ值、晶化时间和晶化温度等。对ＡｌＰＯ４－５分子筛晶相形成和产物结晶度的影响。通过ＸＲＤ、ＩＲ、ＳＥＭ及ＤＴＡ、ＴＧ等分析手段，表征了ＡｌＰＯ４－５的结构和热稳定性能。     

（苯膦酸－磷酸氢）锆－氯化铁复合物催化F－C烷基化反应研究

首次制得（苯膦酸—磷酸氢）锆－氯化铁复合物Ｚｒ（Ｏ＿３ＰＣ＿６Ｈ＿５）（ＨＰＯ＿４）（Ｈ＿２Ｏ）＿０．３５［ＦｅＣｌ＿２（ＯＨ）］＿０．６５该复合物在空气中稳定、不易吸潮、不冒烟，对于卤代烷与芳香烃在液相的Ｆ－Ｃ烷基化反应有较好的催化活性。反应的优点是：反应条件温和，收率高，操作方便，后处理简单，催化剂重复使用性好。     

N，N，N＇，N＇－四（2＇－苯并咪唑甲基）－1，4－二乙氨基乙二醚－联吡啶－铜三元络合物与二氧反应的电化学行为

用循环伏安法描述了三元络合物Ｃｕ２（ＥＧＴＢ）（ｂｐｙ）Ｃｌ４·８Ｈ２Ｏ（以下以Ｃｕ２（Ⅱ）Ｌ代）与二氧的反应．在含０．１ｍｏｌ·ｄｍ－３四丁基高氯酸铵的ＤＭＦ溶液中加入Ｃｕ２Ｌ,使得Ｏ２／Ｏ２－的可逆伏安图发生变化对。Ｏ２的Ｉｐ．ｃ增大,并在比Ｏ２还原电势更正的地方产生一新峰．当［Ｃｕ２Ｌ］大约为２．４ｍｍｏｌ·ｄｍ－３时,仅存在唯—一个峰且基本不变．结果表明Ｃｕ２Ｌ能与Ｏ２－反应产生Ｏ２,有良好的超氧化物歧化酶性质．     

食盐中NO_2~－的波谱法鉴定

ＮＯ２_~－和氨基苯磺酸、α—萘胺的点滴反应，是鉴定ＮＯ２－的特效反应，可捡出１：５×１０６的ＮＯ２－。本方法采用７２３型分光光度计对反应液进行扫描，从获得的吸收曲线，可鉴定１：６．７×１０７的ＮＯ２－，比点滴反应的灵敏度更高。     

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