一种新型酸溶性高失水暂堵剂的研制与评价

研制了一种可用于油气储层防漏堵漏的新型高失水酸溶性暂堵剂ＸＡ,其最佳组成为碳酸钙（ＣＣ）８０％～８５％、氧化钙（ＣＬ）５％～１０％、新闻纸（ＮＰ）５％～１０％和皮革纤维（ＬＦ）５％～１０％．这种新型暂堵剂在１５％盐酸中的酸溶率可达９０％以上,用于储层防漏堵漏时,易于酸化解堵,不会伤害油气层．利用ＤＳ—２堵漏仪对ＸＡ各组分与其堵漏性能的关系进行了系统研究,优化了其组成配方,分析和评价了其作为一种高失水酸溶性暂堵剂的性能,并提供了现场使用方法．     

电厂脱硫用石灰石中氧化钙、氧化镁含量快速检测方法探讨

对比了高温溶解法、三酸溶解法、盐酸直溶三种石灰石试样分解方法对氧化钙、氧化镁测定结果的影响,高温溶解法、三酸溶解法、盐酸直溶均能能准确测定石灰石中的氧化钙、氧化镁含量。     

发酵代谢物对葡萄糖氧化酶生物合成的影响

用膜透析技术和静息细胞系统，对影响葡萄糖氧化酶（ＧＯＤ）发酵的控制因素进行了研究。静息细胞系统显示：鸟氨酸、谷氨酸、甘氨酸、丙氨酸、丝氨酸和胱氨酸等氨基酸对ＧＯＤ的合成有促进作用；葡萄糖酸和丙酮酸对ＧＯＤ的合成有阻遏作用，１．５ｍｍｏｌ／Ｌ的丙酮酸使酶活降低４６．２４％；２０ｍｍｏｌ／Ｌ的葡萄糖酸使酶活降低２１％左右，但葡萄糖酸浓度增大，有被菌体作为碳源利用的可能。利用膜透析技术可除去部分发酵过程中产生的葡萄糖酸和丙酮酸等阻遏物，减少它们对ＧＯＤ合成的分解代谢物的阻遏作用，与分批发酵相比．提高酶活４０％左右。     

微波溶样-ICP法测定海绵铁中主要杂质的含量

采用微波溶样法溶解较难溶的海绵铁，用ICP测定其中的氧化钙、氧化镁、氧化铝、二氧化硅、二氧化钛和磷等主要杂质的含量。探索了微波溶样条件、分析谱线的选择以及铁基体的干扰及校正。试验表明：微波溶样-ICP法测定海绵铁中氧化钙、氧化镁、氧化铝、二氧化硅、二氧化钛和磷等主要杂质的含量，精密度为RSD％≤3％，回收率在95～105％之间；微波溶样-ICP法测定海绵铁中各元素的含量是一个快速、简便、实用的分析方法。     

木质素氧化制取表面活性剂的适宜条件

通过正交实验研究了过氧化氢用量、氧气压力、最高温度、保温时间等条件对麦草氧化碱木质表面活性、氧化木质素中酸溶及酸不溶木质素含量的影响。结果表明，对氧化木质素表面活性及氧化后木质素中酸溶木质素的含量产生影响的4个因素的主次顺序为：过氧化氢用量，最高温度、保温时间，氧气压力。当过氧化氢用量为20％、最高温度90℃、保温时间0．5h、氧气压力0．6MPa时，氧化木质素的表面活性最好。当过氧化氢用量为20％、最高温度90℃、保温时间1h、氧气压力为0．4MPa时，氧化木质素中酸溶木质素所占的比例最高。     

水稻乙醇酸氧化酶的纯化和特性分析

从水稻绿叶分离纯化得到一种单来基的乙醇酸氧化酶，其全酶分子量约为２６０ＫＤ，电泳特性表明该酶的ｐＩ〈８．３我们用改进的８％ＰＡＧＥ，结合Ｗｅｓｔｅｒｎ ｂｌｏｔ，测定水稻绍叶中还存在一种ｐＩ〉８．３的全酶Ｍｒ〉６６９ＫＤ的乙醇酸氧化酶。     

用SO_4(2-)/FeZnZSM催化剂液相合成乙酸丁酯

用浸渍法混合负载铁、锌、硫酸，研制出一种ＳＯ４２－／ＦｅＺｎＺＳＭ分子筛催化剂，用正交试验法分别探讨了负载浓度、焙烧温度、酸醇摩尔比以及催化剂用量对催化活性的影响，用ＩＣＰ、ＸＲＤ、ＤＴＡ、ＴＧ、ＳＳＡ、ＮＨ３－ＴＰＤ等技术对催化剂的物化性能进行了表征．结果表明：研制出的ＳＯ４２－／ＦｅＺｎＺＳＭ催化剂对酯化反应具有良好的催化活性，选择性达１００％．在１２２℃，酸醇摩尔比为１∶１．０８时，反应３小时后，乙酸的转化率达９７．６３％．因催化剂制备成本低，催化剂热稳定性好，机械强度高，可望有开发应用价值．     

高效液相色谱法测定蜂王浆中的10－羟基癸烯二酸

用自行合成的乙烯基交联氨基键合固定相建立了不经分离，只需稀释就可进样定量分析蜂王浆中１０－羟基癸烯二酸（１０－ＨＤＡ）的高效液相色谱方法．流动相：含１０％甲醇的０．０５ｍｏｌ／Ｌ磷酸缓冲液（ｐＨ４．１～４．３）；检测器：紫外吸收；波长：２１３ｎｍ．该方法简单，快速，用于测定蜂王浆及其制品中的１０－ＨＤＡ，标准偏差小于１．５％，回收率为９５％～１０５％．     

五氧化二铌催化剂酯化制备DOP的研究

用固体酸五氧化二铌作酯化催化剂，由苯酐和２－乙基己醇制备了邻苯二甲酸二（２－乙基己）（ＤＯＰ）。反应先快速生成了中间产物邻苯二甲酸单（２－乙基己酯）然后再酯化双酯ＤＯＰ。由单酯转化成双酯的反应为典型的二级反应，测定了二级反应的速率常数和活化能，研究了催化剂的循环使用，探讨了反应时间，反应温度和催化剂用量等因素以粗产品酸度和外观质量的影响。     

锌布片质量标准葡萄糖酸锌溶出度的测定

锌布片中有效成分葡萄糖酸锌溶出度的测定，是通过对溶出仪转速的控常l，溶媒的选择，方法学的验证（包括最大吸收波长的确定、辅型剂及其它有效成分对测定的影响、精密度试验、回收试验、溶出均一性试验等一系列验证试验），最终证实了本方法科学、合理，完全能够用于锌布片质量标准——葡萄糖酸锌溶出度的测定（锌布片中葡萄糖酸锌溶出度测定的时限为30min，溶出限度为75％）．     

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