四元体系Na2B4O7—Na2CO3—NaCl—H2O在0℃时的等温溶度研究

第一次用等温方法测定了含硼酸盐的三元边界体系Ｎａ２Ｂ４Ｏ７－ＮａＣｌ－Ｈ２Ｏ和四元体系Ｎａ２Ｂ４Ｏ７－Ｎａ２ＣＯ３－ＮａＣｌ－Ｈ２Ｏ在０℃时的溶度。结果发现它们都是低共饱型体系。在三元体系中共饱点组成为ＮａＣｌ２６．１９％,Ｎａ２Ｂ４Ｏ７０．３６％（质量）;四元体系中共饱点组成为ＮａＣｌ２３．５５％,Ｎａ２Ｂ４Ｏ７０．６２％,Ｎａ２ＣＯ３４．０７％（质量）,并且绘出了四元体系中的溶度图和等水线。     

阴最离子混合表面活性剂的浓度变化对表面活性的影响

采用表面张力法，帆布沉降法，乳化法，研究了辛基苯基聚氧乙烯醚硫酸钠Ｃ８Ｈ１７Ｃ６Ｈ４（ＯＣ２Ｈ４）１０ＳＯ４Ｎａ（Ｃ８ψＥ１０Ｓ）和十二烷甘７聚氧乙烯基醚硫酸钠Ｃ１２Ｈ２５（ＯＣ２Ｈ４）７ＳＯ４Ｎａ（Ｃ１２Ｅ７Ｓ）与溴化十二烷基三甲铵Ｃ１２Ｈ２５Ｎ（ＣＨ３）３Ｂｒ（Ｃ１２ＮＭ３）形成的混合溶液的表面活性，结果表明，它们不仅能在水溶液中形成透明的均匀浓度，而且混合体系的临界胶浓度（ｃｍｃ）和γｃｍｃ     

硒硒硼氢化钠对芳基磺酰氯,芳基亚磺酸钠和芳基磺酸？…

三硒硼氢化钠（ＮａＢＨ２Ｓｅ３）是一种新型还原剂,其还原能力强于硼氢化钠（ＮａＢＨ４）在乙腈（ＣＨ３ＣＮ）溶液中,它可直接还原芳基磺酰氯（Ａｒ·ＳＯ２Ｃｌ）至相应的二硫化物（Ａｒ·ＳＳ·Ａｒ）产率比单独使用ＮａＢＨ４作还原剂的高。在二甲基酰胺（ＤＭＦ）溶剂中,也可将芳基亚磺酸钠Ａｒ·ＳＯ２Ｎａ）芳基磺酸酯（Ａｒ·ＳＯ３·Ａｒ′）直接还原为相应的二硫化物,而在同样的条件下,单独用ＮａＢＨ４却不能还原     

Li_2B_4O_7-Na_2B_4O_7-H_2O 三元体系 25℃ 相关系及物化性质实验

通过实验研究了Ｌｉ２Ｂ４Ｏ７－Ｎａ２Ｂ４Ｏ７－Ｈ２Ｏ三元体系２５℃相关系及溶液的物化性质。其２５℃相图由二条溶解度曲线构成，分别对应于Ｌｉ２Ｂ４Ｏ７·３Ｈ２Ｏ、Ｎａ２Ｂ４Ｏ７·１０Ｈ２Ｏ相区，属简单共饱和型。简要讨论了该体系硼酸盐在水中的溶解行为，并用经验公式描述了物化性质随浓度的变化规律。     

Na2ZnBr4的新法合成

以ＮａＢｒ和ＺｎＢｒ２为原料，用摩擦化学反应方法制备了橄榄石型结构的Ｎａ２ＺｎＢｒ４和文献的方法相比，用摩擦化学反应法制备了Ｎａ２ＺｎＢｒ４简单，经济。     

无机溶盐化学制冷剂的研究

根据化学溶解吸热原理,探索无机溶盐作为新型制冷剂的可行性．给出适用于空调蓄冷技术的几种相变蓄冷介质．对无机盐溶解热效应、溶质盐与溶剂盐的性质、配比组成等因素进行系统研究,分析了制冷后化学物质回收利用对环境污染的影响．实验结果表明,溶质盐应选用溶解度大、吸热值高的ＮＨ４ＮＯ３,ＫＮＯ３,ＮＨ４Ｃｌ,ＫＨＳＯ４等无机盐类;溶剂盐则应选用结晶水多、吸热值高的Ｎａ２ＳＯ４·１０Ｈ２Ｏ,Ｎａ３ＰＯ４·１２Ｈ２Ｏ,Ｎａ２ＨＰＯ４·１２Ｈ２Ｏ,Ｎａ２Ｂ４Ｏ７·１０Ｈ２Ｏ等．Ｂ组分与４号样品组成的制冷剂效果最佳,最低制冷温度可达－８．５℃．混配盐制冷剂依赖于溶质的性质,但一般难以回收利用．     

N_（503）从H_（2）SO_（4）－Cl~－、Br~－、I~－体系中萃取铋

Ｎ＿（５０３）是国产的酰胺类萃取剂．它在有色和稀有金属萃取分离上得到了日益广泛的应用￣［１～３］．本文研究Ｎ＿（５０３）从Ｈ＿２ＳＯ＿４－ＮａＣｌ、Ｈ＿２ＳＯ＿４－ＮａＢｒ、Ｈ＿２ＳＯ＿４－ＫＩ三个体系中萃取铋的规律，探索萃取能力与水相络阴离子ＢｉＣｌ￣－＿４、ＢｉＢｒ￣－＿４和ＢｉＩ￣－＿４稳定性的关系．研究了水相酸度和Ｃｌ￣－、Ｂｒ￣－、Ｉ￣－浓度对Ｎ＿（５０３）萃取铋的影响，取得了较好的结果，不仅对有色和稀有金属的萃取分离有重要的实际意义，而且对萃取化学理论也有一定的价值．     

碱式反应氢化物发生—ICP光谱法测定矿物中锗的含量

含ＮａＢＨ４的碱性锗试液和酸反应（碱式反应），也能产生ＧｅＨ４，产率和传统的含锗酸性试液与ＮａＢＨ４反应（酸式反应）相同。碱式反应的突出优点是能消除ⅤⅢ和ＩＢ族元素对锗氢化的严重化学干扰。用碱式反应氢化物发生－ＩＣＰ光谱法测定精铜和锌渣中含锗量，结果较好。本方法的回收率为９７．２％，检出限为２．５ｎｇ／ｍｌ。     

NaAc·3H_2O－NaBr·2H_2O多温截面图

给出了ＮａＡｃ－ＮａＢｒ－Ｈ２Ｏ三元体系中ＮａＡｃ·３Ｈ２Ｏ－ＮａＢｒ·２Ｈ２Ｏ多温截面图，为研究ＮａＡｃ·３Ｈ２Ｏ－ＮａＢｒ·２Ｈ２Ｏ相变贮热体系提供了理论依据。由ＮａＡｃ·３Ｈ２Ｏ和ＮａＢｒ·２Ｈ２Ｏ可制得３８～５３℃的混合相变贮热材料。     

应用原子力显微镜研究混合表面活性剂不溶膜的结构

利用ＬＢ技术和原子力显微镜研究表面活性剂混合不溶膜的结构。结果表明Ｃ１８Ｈ３７ＳＯ３Ｎａ－Ｃ８Ｆ１７ＣＯＯＨ混合凝聚膜发生机分离,Ｃ１８Ｈ３７ＳＯ３Ｎａ形成六方微畴分布在连续的Ｃ８Ｆ１７ＣＯＯＨ相中;Ｃ１２Ｈ２３ＳＯ４Ｎａ－Ｃ１８Ｈ３７Ｎ（ＣＨ３）３Ｂｒ形成了相当 均匀完整的混合膜;Ｃ１８Ｈ３７Ｎ（ＣＨ３）３Ｂｒ－Ｃ８Ｆ１７ＣＯＯＨ所成膜呈微不均匀状态。结果说明混合不溶膜表面状况由极性头相互作用与     

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-