纳米氧化镁的合成

以ＭｇＣｌ２·６Ｈ２Ｏ和ＣＯ（ＮＨ２）２为原料，采用均匀沉淀法合成了纳米ＭｇＯ．讨论了反应温度、煅烧温度和时间对产物的影响，通过ＸＲＤ和ＴＥＭ对纳米ＭｇＯ进行了表征．     

无机易熔混合物在太阳热能中的储存研究

用ＤＳＣ法对Ｍｇ（ＮＯ３）２·６Ｈ２Ｏ－ＭｇＣｌ２·６Ｈ２Ｏ组成物的储热性能（其中包括熔点、熔化热、过冷性能等）进行了测定，得到了该体系的相图．实验表明，它们是较好的储存热能材料．     

CaCl2*6H2O-MgCl2*6H2O多温截面的研究

用步冷曲线法研究并绘制了ＣａＣｌ２·６Ｈ２Ｏ－ＭｇＣｌ２·６Ｈ２Ｏ多温截面图,实验显示该截面有两个四相转熔反应,其转熔温度分别为２５．０℃和２２．０℃．结果表明,ＣａＣｌ２·６Ｈ２Ｏ－ＭｇＣｌ２·６Ｈ２Ｏ混合盐可用于低温相变储热．     

棒曲霉UA—2木聚糖酶的蔗渣固态发酵

棒曲霉（Ａｓｐｅｒｇｉｌｕｓｃｌａｖａｔｕｓ）ＵＡ－２固态发酵蔗渣产木聚酶的培养基为每克蔗渣加营养液５ｍｌ，初始ｐＨ８．５．营养液的适宜组成为每升含：ＮＨ４ＮＯ３１０ｇ、Ｋ２ＨＰＯ４６ｇ、ＭｇＳＯ４·７Ｈ２Ｏ０．７５ｇ、ＣａＣｌ２０．７５ｇ、ＦｅＳＯ４·７Ｈ２Ｏ１１．２５ｍｇ、ＭｎＳＯ４·Ｈ２Ｏ３．７５ｍｇ、ＺｎＳＯ４３．０ｍｇ、ＣｏＣｌ２４．５ｍｇ．在上述培养基中接入其湿重１０％（Ｗ／Ｗ）的新鲜的ＵＡ－２种子曲，２８℃培养１０８ｈ，其木聚糖酶，滤纸降解酶和羧甲基纤维素酶的活力分别为２６９５．６、２８．５和４２．７ｕ／ｇ蔗渣．酶反应的最适ｐＨ５．０，最适温度５０℃；在ｐＨ４．０～１１．０内酶活性十分稳定．５０℃保温１ｈ，酶活剩余５５％，８℃下放置２３ｄ，活力几乎不变．磷酸盐，半胱氨酸对酶有激活作用，ＥＤＴＡ和对氯汞本甲酸对酶有抑制作用     

浅议镁和碱反应

镁同碱反应未见有报道．文献［３～６］认为：“镁不能跟碱反应”．本文的热力学计算数据和实验事实都证明，镁能和固体碱反应，反应的化学方程式是：２ＮａＯＨ（ｓ）＋Ｍｇ（ｓ）＝ＭｇＯ（ｓ）＋Ｎａ２Ｏ（ｓ）＋Ｈ２（ｇ）↑．     

用氧化水观点解释酶促过氧化氢歧化分解的反应机理

认为过氧化氢酶（ＥＣ１．１１．１．６）催化过氧化氢歧化分解反应的机理是：过氧化氢酶结合一分子Ｈ２Ｏ２形成化合物Ⅰ后，催化该Ｈ２Ｏ２异构化为一种氧化性能很强的Ｈ２Ｏ－Ｏ，然后，放出活性氧原子去氧化另一个Ｈ２Ｏ２分子产生２Ｈ２Ｏ和Ｏ２；并认为Ｈ２Ｏ２异构化为Ｈ２Ｏ－Ｏ是该总反应的控制环节。据此观点，进行了单分子反应理论ＲＲＫＭ计算，其结果和实验基本一致。     

无机易熔混合物在太阳热能中的存储研究

用ＤＳＣ法对ＭＧ（ＮＯ３）２．６Ｈ２Ｏ－ＭｇＣｌ２．６Ｈ２Ｏ组成物的储热性能进行了测定，得到了该体系的相图，实验表明，它们是样邹的储存热能材料。     

相转化法制备硼酸镁盐

为了改进２ＭｇＯ．２Ｂ２Ｏ３．ＭｇＣｌ２．１４Ｈ２Ｏ的合成方法,提出了它的快速制备方法,由该复盐在不同温度水中的溶解相转化作用,在６０－７０℃制备ＭｇＯ．Ｂ２Ｏ３．３Ｈ２Ｏ,在８０℃制备２ＭｇＯ．Ｂ２Ｏ３．２Ｈ２Ｏ。提出了合成反应机理。     

MgO－MgCl_2－H_2O固相体系的研究

利用临界浓度的概念，对ＭｇＯ—ＭｇＣｌ２－Ｈ２Ｏ固相体系的析晶过程及反应终点产物组成进行了理论探讨，并根据理论分析结果设计试验，从而验证了理论分析的正确性。     

用氧化双观点解释酶促过氧化氢歧化分解的反应机理

认为过氧化酶（ＥＣ１．１１．１．６）催化过氧化氢歧化分解反应的机理是：过氧化氢酶结合一岔子Ｏ２形成化合物Ｉ后，催化该Ｈ２Ｏ异构化为一种氧化性能很强的Ｈ２Ｏ－Ｏ，然后，放出活性氧原子去氧化另一个Ｈ２Ｏ２分子产生２Ｈ２Ｏ和Ｏ２；并认为为Ｈ２Ｏ２异构化为Ｈ２Ｏ－Ｏ是该总反应的控制环节，据此观点，进行了单分子反应ＰＲＫＭ计算，其结果和实验基本一致。     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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-