磷酸酯改性的环氧-聚氨酯丙烯酸酯的合成及性能

以双酚A二缩水甘油醚（CYD-128）、磷酸二酯、甲苯2,4-二异氰酸酯（TDI）和丙烯酸羟乙酯（HEA）为原料合成了一种新型无卤的光敏性阻燃预聚物，并对其结构进行了表征。研究了以所制预聚物为基料的紫外光固化涂料的光敏性和阻燃性。结果表明：该涂料3s能固化（以1kW高压汞灯为光源，照距15cm）；其固化膜有较高的分解温度，800℃下形成的炭渣能达到涂层原质量的20%左右，固化膜的极限氧指数（LOI）达到26.3，具有一定的耐热防火性能；固化膜的耐热防火性能随其磷含量的增加而提高。     

紫外光和热双重固化对涂料性能的研究

探讨光、热固化的原理及特点，研究了紫外光和热双重固化对涂料性能的影响．实例表明，应用紫外光和热双重固化可以改善紫外光涂料的性能，特别是提高了涂层的硬度、耐磨性，降低了固化膜的收缩率．     

钙塑涂料生产技术

前几年在国内普遍应用的仿瓷涂料普遍存在防水性能差、湿擦脱粉等问题，而且成本较高。为了克服这些缺点，最近出现的钙塑涂料具有原料易购、成本低、加工工艺简单、徐膜光泽优雅。正看似瓷、侧着如镜、色泽可根据需要调节、硬度高、耐擦洗等优点。这种水性内外墙涂料的出现给建筑装饰行业提供了一种高质量、低成本的涂料。这里将该涂料的生产技术介绍给读者参考。用具及设备台秤。100－200升容器、水浴锅、搅拌器、胶体磨（17吨／日产）。原料（1）氢氧化钙即熟石灰，外观为白色粉末，相对密度2.24，该涂料中用1／3氢氧化钙、2／3轻质碳酸…     

涂料胶粘剂在涂层成形时的作用原理

从胶体化学角度，综述了胶乳和淀粉作为造纸涂料胶粘剂时对粘结强度的影响因素，以及涂料体系中颜料粒子的吸附和成膜过程的低表面张力现象。当颜料对胶粘剂吸附力强，同时胶粘剂体系的表面张力小时，则涂层粘胶强度大。     

光纤内层涂料的改性研究

本文利用齐聚物分子修饰和齐聚物复配等方法对环氧丙烯酸酯光纤内层涂料进行了改性研究。测试了改性后涂料的粘度，固化速度，收缩率，固化膜的硬度，杨氏模量等性能指标。经测试，其性能指标均达到或接近于美国Ｄｅｓｏｔｏ公司９０年代中期同类产品的水平。     

UV固化防腐蚀涂料的研究

所研究的UV固化防腐蚀涂料包括环氧类的单体,带羟基功能团的复合稀释剂,复合光引发剂和粘附力促进剂.本文在阐述了作者的研制工作以后,讨论了涂料各组分对固化膜的性能,主要是对膜与基质间的粘附力的影响.     

UV固化涂料与石英光纤的附着力及对传输损耗的影响

UV(即Ultraviolet,紫外线)固化的涂料是一种广泛使用的石英玻璃光纤的一次被复材料,该涂料固化后的性能对光纤的特性有很大的影响:若与光纤的附着力差,就易出现脱皮现象,附着力太强,则可能使光纤的传输损耗增加。本文着重探讨了UV涂料固化膜与石英基质间附着力形成的机理以及涂料的组成、固化膜的结构和环境因素,特别是水和水蒸气对附着力的影响。     

彩色涂层钢板的预处理

本文论述了彩色涂层钢板预处理的最佳工艺条件的选择,该工艺可在室温下进行,节约能源,并且成膜速度快(小于10s),效果好,具有广泛的适应性。同时也研究了各组分对预处理成膜的影响,探讨了预处理膜的组织结构与彩色涂层钢板性能的关系。     

水性涂料用聚氨酯／丙烯酸酯复合乳液合成技术的研究

大量研究表明，将聚氨酯和聚丙烯酸酯结合在一起得到的聚氨酯／丙烯酸酯复合乳液（PUA）可使涂膜获得更优异的性能，在水性涂料中有重要的应有价值．PUA复合乳液的合成方法对复合组分的相容性以及复合乳液乳胶膜的性能有重要的影响．本文综述了水性聚氨酯／丙烯酸酯复合乳液主要合成方法的研究状况，并对各种方法进行比较．     

水溶性丙烯酸类树脂的研究

以丙烯酸,丙烯酸酯,甲基丙烯酸,甲基丙烯酸酯等作为基料,在引发剂的存在下,以水或除溶剂进行聚合,加入苯乙烯,醋酸乙烯等改性,合成了3种不同的水溶性丙烯酸改性树脂,并对其性能进行了测定,结果表明,这3种树脂的粘度,水溶解性,干燥后膜的吸胀性,抗酸碱性,光亮度等性能均优于同类产品。     

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-