二氧四－2，2＇－联吡啶合二锰（Ⅲ，Ⅳ）高氯酸盐三水合物的晶体结构测定

本文报道标题化合物［（ｂｐｙ）＿２Ｍｎ（μ－０）＿２Ｍｎ（ｂｐｙ）＿２］（ＣｌＯ＿１）＿３·３Ｈ＿２Ｏ（ｂｐｙ＝２，２＇－ｂｉｐｙｒｉｄｉｎｅ）的晶体结构重新测定的精确结果．该化合物的晶体属单斜晶系，空间群为Ｐ２＿１／ｃ（Ｎｏ．１４），ａ＝１．３８９３（５），　ｂ＝１．３９８７（４），ｃ＝２．４３１７（９）ｎｍ，β＝１０３．６１（３）°，Ｕ＝４．５９８（２）ｎｍ￣３，Ｍｒ＝９．１，Ｚ＝４，Ｄ＿ｃ＝１．６１８ｇ·ｃｍ￣（－３），μ＝８．１ｃｍ￣（－１），对４０３２独立可观察衍射数据进行修正，最后偏离因子Ｒ＿Ｆ＝０．０６９，结果表明，该双核化合物中的两个不同价态的锰（Ⅲ，Ⅳ）离子在晶体中完全可区分．本工作的结构数据与文献值有较明显的区别．     

羟基铬交联蒙脱土的制备及物化性能的研究

本文以钠型蒙脱土（Ｎａ－Ｍｔ）为原料，以羟基铬聚合阳离子为交联剂制备出羟基铬交联蒙脱土（Ｃｒ－Ｍｔ）并对其物化性能进行研究。结果表明Ｃｒ－Ｍｔ的物化性能优于Ｎａ－Ｍｔ，ｄ＿（００１）值１．６～１．９ｎｍ，比表面积８０～１９０ｍ￣２·ｇ￣（－１），１．８～５．０ｎｍ的孔约占半数以上，表面总酸量为６．１×１０￣（－４）～６．５×１０￣（－４）ｍｏｌ·ｇ￣（－１）、阳离子交换量在９．０×１０￣（－３）～４２×１０￣（－３）ｍｏｌ／１００ｇ样，但其热稳定性有待进一步提问。     

锌－水杨基荧光酮－阳离子表面活性剂体系测定食品中锌（Ⅱ）的新方法

拟定了测定微量锌（Ⅱ）的新方法，研究了锌（Ⅱ）．水杨基荧光酮－阳离子表面活性剂体系的显色反应，实验证明，在ｐＨ（９．０～９．７）的Ｈ＿３ＢＯ＿３－Ｈ＿３ＰＯ＿４－ＨＡｃ－ＮａＯＨ缓冲体系中，锌（Ⅱ）与水杨基荧光酮生成１：２的配合物，在阳离子表面活性剂－溴化十六烷基三甲胺（ＣＴＭＡＢ）存在下生成１：２：３的蓝紫色三元配合物，λ＿（ｍａｘ）为５７０ｎｍ，表观摩尔吸光系数ε为７．７×１０￣４Ｌ·ｍｏｌ－１·ｃｍ－１，可在水相中直接测定锌（Ⅱ）；并且详细研究了最佳实验条件，锌（Ⅱ）含量在（１．０～８．０）μｇ／２５ｍＬ，范围符合比耳定律，锌（Ⅱ）的检测限为０．０４μｇ／ｍＬ，用于快速测定食品中的微量锌（Ⅱ），结果满意。     

稀土金属镱及钇苦味酸盐与苯并15冠5配合物的晶体和分子结构

标题化合物Ｙｂ（Ｐｉ）＿３（Ｂｌ５Ｃ５）＿２·２Ｈ＿２Ｏ·ＣＨ＿３ＣＮ（Ｉ）及Ｙ（Ｐｉ）＿３（Ｂｌ５Ｃ５）＿２·２Ｈ＿２Ｏ·ＣＨ＿３ＣＮ（Ⅱ）为同晶结构，均为３斜晶系，空间群为Ｐ－对晶体（Ｉ），ａ＝１２．７５３（１）Ａ，ｂ＝１３．８１０（２）Ａ．ｃ＝１９．６０９（２）Ａ，α＝８１．３７（３）°，β＝７１．５８（３）°，γ＝７０．７１（２）°，Ｚ＝２．Ｄ＿ｃ＝１．４６８ｇ·ｃｍ￣（－３），μ＝１５．９２８ｃｍ￣（－１）（ＭｏＫα），Ｍ＿ｒ＝１４７１，０４，Ｆ（０００）＝７４５，Ｒ＝０．０３１，Ｒ＿ｗ＝０．０３９；对晶体（Ⅱ），α＝１２．７８５（１）Ａ，ｂ＝１３．８５０（３）Ａ，ｃ＝１９．５７１（２）Ａ，α＝８１．０５（３）°，β＝７０．９２（２）°，γ＝７０．６２（３）°，Ｚ＝２，Ｄｃ＝ｌ．４８５ｇ·ｃｍ￣（－３），μ＝１０．４４１ｃｍ￣（－１）（ＭｏＫα），Ｍ＿ｒ＝１３８６．９ｌ，Ｆ（０００）＝７ｌ４，Ｒ＝０．０６５，Ｒ＿ｗ＝０．０７８．测定结果表明，中心稀土离子Ｙｂ￣（３＋）（或Ｙ￣（３＋）直接与３个苦味酸阴离子和２个水分子配位，此水化镱（或钇）苦味酸盐通过水桥氢键与冠醚Ｂｌ５Ｃ５相联而形成一个大的疏水性     

DApBM-V(Ⅴ)-Mn(Ⅱ)-Tween-80体系光度法测定钒(V)

在磷酸介质中，在Ｍｎ（Ⅱ）和Ｔｗｅｎ－８０存在下，ＤＡｐＢＭ与钒（Ⅴ）生成橙黄色化合物，产物至少可稳定３．５ｈ．最大吸收波长为４８５ｎｍ．摩尔吸光系数ε＝４．０１×１０５Ｌ·ｍｏｌ－１·ｃｍ－１和ε＝１．５７×１０５Ｌ·ｍｏｌ－１·ｃｍ－１．钒（Ⅴ）量在０．５～３．０μｇ／２５ｍｌ及３．０～１０．０μｇ／２５ｍｌ间符合比尔定律．该体系灵敏度高，选择性较好，用于中草药中痕量钒（Ⅴ）的测定，结果满意     

［Ag_2（α－Ph_2PPy）_2］_2（NO_3）_4的合成和晶体结构

ＡｇＮＯ＿３和ａ－ｐｈ＿２ｐｐｙ，（ａ－（Ｃ＿６Ｈ＿５）＿２Ｐ（ＮＣ＿５Ｈ＿５））在加有少量Ｈ＿２Ｏ＿２和ＮａＯＨ的Ｃ＿２Ｈ＿５ＯＨ水溶液中反应生成标题化合物的灰黑色晶体。属四方晶系，空间群Ｐ４＿１，ａ＝１．３００ｎｍ，Ｃ＝４．０７６ｎｍ，ｖ＝６．８８４ｎｍ￣３，Ｚ＝８，Ｄ＿ｃ＝１．６７ｇｃｍ￣（－３），Ｒ＝０．０５９，ｒ＿ω＝０．０７２．每一不对称单元中存在二套独立而结构基本相同的［Ａｇ＿２（ａ－ｐｈ＿２ＰＰｙ）＿２］￣２＋，它的二个Ａｇ原子和二个ａ－ｐｈ＿２ＰＰｙ中－Ｎ－Ｃ－Ｐ－桥的Ｎ，Ｐ原子联接成为一个稳定非共面八员环，而环内Ａｇ，Ａｇ间距分别是０．３１４，０．３ｌ０（ｎｍ），均未成键。不对称单元中的二个八员环通过的Ｏ原子与环上Ａｇ原子的弱成键而具有结构联系。环内还出现了罕见的三配位Ａｇ原子。     

乙烯气相聚合高效催化剂的组成和聚合反应

研究了２种类型的乙烯气相聚合高活性催花剂．用ＳｉＯ２,ＭｇＣｌ２作复合载体,负载ＴｉＣｌ４制得的ＳＭ型催化剂,载体中含ｗ（Ｔｉ）为２％～３％,ｗ（Ｔｉ３＋）为３５％～５９％,比表面积１０５～１２０ｍ２／ｇ,催化活性每小时每克催化剂Ｔｉ催化得５．０～５．７ｋｇ产物ＰＥ（ｋｇ·ｇ－１·ｈ－１）,聚合动力学曲线为衰减型．用镁粉、卤代烷、四氯化钛为主要组分制备的ＭＧ－２型催化剂,载体中ｗ（Ｔｉ）为６％～７％,ｗ（Ｔｉ３＋）为５５％～６９％,比表面积７０～８５ｍ２／ｇ,催化活性１．８～２．０ｋｇ·ｇ－１·ｈ－１,聚合动力学曲线为平稳型．对ＳＭ型催化剂扫描电镜及图象分析得到颗粒平均粒径（ｄ）,颗粒长短轴比（ｄｌ／ｄｓ）及颗粒大小粒径比（ｄｍａｘ／ｄｍｉｎ）分别为３１μｍ,１．４０２,４．１,ＭＧ－２型催化剂为３３μｍ,１．５２４,７．０,相应聚合产物颗粒的ｄ,ｄｌ／ｄｓ,ｄｍａｘ／ｄｍｉｎ,ＳＭ型催化剂为２４７μｍ,１．２９５,４．６,ＭＧ－２型催化剂为２６３μｍ,１．５４０,９．０．显示出ＳＭ催化剂更优良的聚合性能．     

复合型纳滤膜的制备及表征

在聚砜基膜上用界面聚合法制备了两种复合型纳滤膜ＰＡ０１和ＰＡ０２。在０．３ＭＰａ下,ＰＡ０１膜对ＭｇＳＯ４溶液和ＦｅＣｌ３溶液的脱直 ９６．０％和７８．０％,水通量分别为８．５（Ｌ．ｍ＾－２．ｈ＾－１）和７．９（Ｌ．ｍ＾－２．ｈ＾－１）;ＰＡ０２膜对ＭｇＳＯ４ｉｐｗｋｉｙｗ （２．０ｇ．Ｌ＾－１）和ＣａＣｌ溶液（０．５ｇ．Ｌ＾－１）的脱盐率分别为９８．０％和８８．８％,水通量分别为１．０（Ｌ。ｍ＾     

苯基氮杂-15-冠-5-八钼多酸钠超分子配合物的结构与热分解

本文对新型超分子配合物［Ｎａ（ＮＰｈ）１５Ｃ５（Ｅｔ２Ｏ）］２Ｎａ２Ｍｏ８Ｏ２６进行了Ｘ射线四园衍射测定,该晶体属单斜晶系,空间群为Ｐ２１／ｃ,ａ＝１７８０３（４）,ｂ＝１３６７４（３）,ｃ＝１４６１０（３）,β＝１１２３３（２）°,Ｖ＝３２９０（１）ｎｍ３,Ｍｒ＝２０２１３,Ｄｃ＝２１４ｇ／ｃｍ３,μ＝１７１ｍｍ－１,Ｆ（０００）＝２０７９６３,Ｒ＝００２５６和Ｒｗ＝００２９５,并联系差热热重分析和１ＨＮＭＲ实验,讨论了配合物的热分解过程．     

呋喃醛缩氨基硫脲腙的合成和结构测定

使用化学纯的糠醛和氨基硫脲，在少量冰醋酸的催化下，缩合反应生成呋喃醛缩氨基硫脲腙Ｃ＿６Ｈ＿７Ｎ３ＯＳ，Ｍ＿ｒ＝１６９．２１，单斜晶系，空间群Ｐ２＿１／ｎ，ａ＝１．３５０　６（３），ｂ＝０．５６５６（５），Ｃ＝２．１０２３（２）ｎｍ，β＝９７．４３°（３），Ｖ＝１．５９２６ｎｍ￣３，Ｚ＝８，Ｄ＿ｘ＝１．４１１ｇ／ｃｍ￣３λ（Ｍ＿Ｏｋａ＝０．０７１０７３ｎｍ），μ＝３．３４８ｃｍ￣（－１），Ｆ（０００）＝７０４．８５０可观察独立反射（Ｉ＞３σ（Ｉ）使结构解出并精修到Ｒ＝０．０５３，Ｒｗ＝０．０５０，Δ／σ＝０．１４，单位权重观察值的最大误差为１．１６９．不对称单位含有二个非结晶学对称相关的独立分子，分子构型存在较大差异．缩合反应发生在杂环羰基和氨基硫脲分子中的肼基－ＮＨＮＨ＿２上，酸催化可以加速缩合反应，获得较高的产率．     

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