以3—缩甘油氧丙基三甲氧基硅烷交联制备PEG—20M玻璃…

以ＰＥＧ－２０Ｍ为固定相，三氟化硼为催化剂，３－缩甘油氧丙基三甲氧基硅烷（简称ＫＨ－５６０）为交联剂，二氯甲烷为溶剂，对预先用氯化钠沉积法粗糙化的玻璃毛细管柱进行动态涂渍。涂渍好的柱在１５０℃恒温４ｈ进行交联。对交联柱的性能进行了严格的评价。     

以3－缩甘油氧丙基三甲氧基硅烷交联制备PEG－20M玻璃毛细管柱

以ＰＥＧ－２０Ｍ为固定相，三氟化硼为催化剂，３－缩甘油氧丙基三甲氧基硅烷（简称ＫＨ－５６０）为交联剂，二氯甲烷为溶剂，对预先用氯化钠沉积法粗糙化的玻璃毛细管柱进行动态涂渍。涂渍好的柱在１５０℃恒温４ｈ进行交联。对交联柱的性能进行了严格的评价。     

填充柱气相色谱固定相吸滤涂渍法

对一种新的气相色谱固定相制备形式－－吸滤涂渍法进行了初步研究。结果显示：与常规涂渍法制备的色谱柱相比,当氢气为载气,孔径为０１８～０３０ｍｍ的６２０１红色载体涂渍不同配比的邻苯二甲酸二壬酯时,此类柱子在３０～８０ｍｌ·ｍｉｎ－１范围内Ｈｅｆｆ～Ｆ曲线平滑。小范围温度波动（△ｔ＝２０～３０℃）和大范围配比变化（５％～１７％）对Ｈｅｆ～Ｆ曲线的形状影响不大,且（Ｈｅｆ）ｍｉｎ总在２ｍｍ上下。几乎在所有测试条件下吸滤涂渍法制备的色谱柱的柱效都高于常规涂渍法,增加的百分率在１８％～１８７％不等。     

几种低粘度固定液熔凝硅石毛细管柱的制备

氯化钠沉积粗糙化方法可以用来对熔凝硅石毛细管注的内壁进行修饰。用这种预处理的空柱可以明显提高对OV-101,OV-17,Superox-20M和OV-225几种常用的低粘度商品固定液的涂渍成功率。对制备好的几种柱子的放置稳定性进行了观察。     

交联PEG—20M玻璃毛细管色谱柱的研制

采用３－缩甘油氧丙基三甲基硅烷（ＫＨ－５６０）为交联剂，以ＢＦ３为催化剂，在１５０℃下制备交联ＰＥＧ－２０Ｍ玻璃毛细管色谱柱，探讨了该色谱柱的柱效、涂渍效率、交联度、热稳定性、耐溶剂性等，取得较满意的结果。     

交联PEG－20M玻璃毛细管色谱柱的研制

采用３－缩甘油氧丙基三甲基硅烷（ＫＨ－５６０）为交联剂，以ＢＦ３为催化剂，在１５０℃下制备交联ＰＥＧ－２０Ｍ玻璃毛细管色谱柱．探讨了该色谱柱的柱效、涂渍效率、交联度、热稳定性、耐溶剂性等，取得较满意的结果．     

毛细管内合成氰酯型气相色谱固定相

气相色谱中目前常用的 WCOT和 SCOT毛细管柱,一般是将预先选定的化合物均匀涂渍在毛细管内壁作为固定相,涂渍前后固定相的化学结构和形态没有变化。化学键合和交联型毛细管柱却不同,前者是固定相和玻璃表面的活性基团之间通过键合反应连成一体;后者是利用引发剂等使固定相高分子之间进行交联网化,这两种柱型虽然涂渍前后固定相的化学结构和形态发生了一定程度的变化,但固定相的原有骨架基本不变。还有一种探索中的方法是直接在毛细管柱内合成所需固定相,例如在等离子体作用下用二甲基二氯硅烷在毛细管内合成硅聚合物固定相,但在一般实验…     

溶胶-凝胶气相色谱柱的柱容量的研究

新型的溶胶—凝胶毛细管气相色谱柱除了具有热稳定性高及分离效果好的特点外，此色谱柱的柱容量(sample capacity)数倍于传统的用静态法涂渍固定相并用交联反应使之固载化的色谱柱的柱容量．在两种不同的色谱柱上，逐渐增加试样的进样量，柱效率随之变化．进样量对柱效率的影响清楚地表明了溶胶—凝胶柱的柱容量远高于传统柱．     

超动态法研制交联PEG—20M弹性石英毛细管柱

采用超动态的方法涂渍，以过氧化二异丙苯作为引发剂制备了交联ＰＥＧ－２０Ｍ弹性石英毛细管柱；考查了固定相浓度对柱效的影响，结果证明固定相浓度为１．９％的，涂清效率在９０％以上，柱效和容量因子也较高。     

改性丝光沸石用作甲胺化反应催化剂的研究：涂渍铈改性丝光沸石

研究了磷酸三甲酯、亚磷酸三甲酯、涂渍液Ａ涂渍于铈改性丝光沸石催化剂时，对常压固定床上甲胺化反应的影响；考察了不同涂渍条件（涂渍时间、涂渍温度及涂渍液浓度）下催化剂的活性及选择性，筛选出一较佳制备条件，所制催化剂的二甲胺选择性达９８．７％．     

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