FeO-SiO_2-CaO-MgO系高镁炉渣粘度的测定

测定了合成的不同成份的FeO－CaO－MgO系炉渣的粘度，得知：在炉渣中，当mFe／mso2为1.2～1.5，ωMgO为6％～9％，ωFe3O4为3％～4％，ωCaO为0～9％，温度范围为1250～1450℃时，炉渣粘度随ωFe／ωSiO2和ωCaO的升高而降低，随着ωMgO的升高而增大；在1350℃以上时，上述变化关系则不明显．对于闪速炼镍所采用的FeO－SiO2－CaO－MgO系炉渣，在一般的冶炼操作温度（1300～1350℃）下，当渣中ωMgO高达6％～8％时，仍可获得流动性能良好的渣；当ωMgO在9％以上时，则渣的粘度迅速上升以致不适合于冶炼．同时，在炉渣总量不变的情况下，在一定的范围内通过减少SiO2的加入量和补加CaO含量可使炉渣粘度得到改善．     

3a0．6Sr0．4TiO3／MgO／Mg2SiO4复相陶瓷的制备与介电可调性能

采用标准电子陶瓷工艺，制备了Ba0．6Sr0．4TiO3／MgO／Mg2SiO4复相陶瓷（MgO和Mg2SiO4按相同重量加入），研究了MgO和Mg2SiO4含量对复相陶瓷微观结构、介电性能及介电可调性的影响．结果表明，随着MgO和Mg2SiO4含量的增加，陶瓷的晶粒尺寸略有增大，低频（100kHz）介电常数、介电损耗、介电可调度和介电常数温度系数降低．随着偏置电场的增强，介电常数降低，介电损耗变化不大（均在10^-3量级）．当MaO和Mg2SiO4的百分含量均为30％时，获得了室温介电常数为101．6、介电损耗为0．0017及1．79kV／mm偏置电场下介电可调度为12．19％、介电常数温度系数为0．009℃^-1的介电性能。     

氧化镁助剂对一步法合成吲哚的Cu/SiO2催化剂性能影响的研究

采用分步等体积浸渍法制备了Cu／SiO2-MgO催化剂，并将其用于一步法合成吲哚的反应．结果表明，当Cu／SiO2-MgO催化剂中含摩尔比0．25％铜担载量的MgO助剂时，焙烧温度为500℃，并在150℃下经混合气还原后，其催化性能最佳，吲哚的收率可达96％；当Cu／SiO2-MgO催化剂中的晶体达到一定结晶度时，其选择性很高，铜晶体的结晶度过高或过低都会导致副产物增多，吲哚的选择性降低．同时，加入氧化镁助剂能提高催化剂的稳定性．     

H4SiW6Mo6O40／SiO2在H2O2催化氧化环己酮合成己二酸中的应用

采用溶胶一凝胶法制备了二氧化硅负载硅钨钼酸催化剂．以二氧化硅负载硅钨钼酸（H4SiW6M06040／SiO2）为催化剂,30％H202为氧源,催化氧化环己酮合成己二酸．探讨H4SiW6Mo6O40／SiO2对氧化反应的催化活性,较系统地研究了二氧化硅负载硅钨钼酸用量、反应温度、H。02用量、反应时间等因素对产物收率的影响．实验表明：H4SiW6Mo6O40／SiO2是合成己二酸的良好催化剂;在n（环日酮）：n（H2O2）：n（H4SiW6Mo6O40／SiO2）=100：198：0．124,反应温度为110℃,反应时间3．5h的最佳条件下,己二酸的收率可达86．7％．     

二氧化硅固载磷钨酸催化合成吡啶-N-氧化物研究

以二氧化硅为载体制备了PW12／SiO2催化剂，研究了催化合成吡啶-N-氧化物的最适宜条件．对反应的影响因素如原料配比、反应时间、反应温度和催化剂用量进行了详细讨论．实验证明：二氧化硅固载磷钨酸催化剂具有良好的催化活性，并且可以重复使用．其最优工艺条件是：n吡啶：nH2O2=1：1．5，催化剂的固载量为20％，反应温度为80℃，反应时间为2h，收率可达93％．     

涟钢CSP线LF终渣成分模型的计算及后台试运行

采用物料平衡原理对涟钢CSP工艺中LF终渣成分作了理论计算，其计算成分范围w（CaO）为52％～62％，w（SiO2）为5．5％～6．5％，w（Al2O3）为17％～28％，w（MgO）为5．5％～6．5％，同时还计算了该终渣系的四元碱度和光学碱度范围，即分别为R4=1．70～2．90，Λ=0．78～0．84。计算结果表明，理论计算与实际检测结果基本一致，与目标控制值相差不大，从理论上建立精炼渣加料模型实现计算机程序界面化操作是可行的。在后台试运行中，模型的初期命中率为70％，修正后预期效果可达到90％以上。     

Pemoline工艺路线的探讨

以扁桃酸为原料，采用苯回流带水进行酯化，再与硝酸胍缩合的方法合成了Ｐｅｍｏｌｉｎｅ，并通过改变不同的反应条件，找到最佳合成路线．该工艺操作简单，副产物少，总收率达４７％，较文献收率提高１５％～２０％．     

大孔树脂负载金属离子催化合成尿囊素

以乙二醛和尿素为原料，用FeSO4-H2O2催化氧化合成乙醛酸．将所得乙醛酸溶液在不经分离及大孔树脂负载的Ce(SO4)2固体酸催化剂存在的情况下，与尿素缩合制备尿囊素，实验考察了催化剂用量、反应温度、反应时间、原料配比、催化剂重复使用次数等因素对收率的影响．确定了最佳工艺条件，乙二醛氧化制乙醛酸的最佳工艺条件为反应温度15～20℃，n(乙二醛)：n(H2O2)=1：1．1，乙醛酸收率达82％．缩合反应的最佳工艺条件为Ce(SO。)2／大孔树脂催化剂用量为投料量的2％(质量比)，原料配比n(乙二醛)：n(尿素)=1：2．5，反应温度80℃，反应时间4h，产品尿囊素的收率可达54％，催化剂可重复使用11次以上。     

医药中间体2，6—二氯苯酚的合成新工艺

介绍了以苯酚为原料直接氯化制备2，6—二氯苯酚的新工艺，与传统方法相比，新工艺的产品生产成本大幅降低．新工艺收率达81％，旧工艺收率在60％左右．     

大豆分离蛋白酶法工艺的研究

项目简介 以食品级多糖水酶类制剂为素材，按一定配比复配加工成复合酶制剂，利用该制剂酶解水溶胀豆粕。然后，经碱浸提酸沉淀工艺生产大豆分离蛋白，大幅度提高了生产工艺水平：以蛋白质含量≥52％，PDI≥45％的低温豆粕为原料，蛋白质浸出率达80％以上；分离蛋白成品纯度≥90％，收率＞36％，原料蛋白质回收率达60％以上，且工艺稳定。     

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