多功能环保型防冻液的研究

研制了多功能环保型防冻液,确定了配方,具有防冻、防腐、防垢、防泡,防沸的功能,配方中不含对人体和环境有害的物质,选用的材料价格低,经济实惠,效能高。对各项性能进行了测定,各项测定指标均优于SH/T0521-1999规定的指标。适用于各类汽车的防冻需要。     

太阳能供暖用新型流体制备及导热性能测试

严寒、寒冷地区液体型集热器应用时需考虑防冻性能,工程常使用乙二醇型防冻液作为循环工质。但其导热系数仅为水的60%,集热循环过程中防冻液与太阳能集热器基板传热不充分导致基板过热和集热热损过大。为解决上述问题,通过乙二醇型防冻液及相变材料配制不同浓度的传热蓄热流体(heat transfer and heat storage fluid, HTHSF),在考虑防冻的基础上,以增加HTHSF综合导热系数为目的,通过瞬态热线法实验研究HTHSF相变过程中导热系数的变化规律。结果表明：当温度升高或浓度减小时载流体导热系数增大。配制的HTHSF呈水基溶液的特性,在单一相时导热系数与温度呈正比关系,相变使得导热系数有所减小。寒地太阳能供暖用新型HTHSF 10%、冰点-20℃时性能较好,此外拟合公式与实测数据误差在0.5%以内。     

高强豪华仿瓷釉面石膏板

高强豪华仿瓷釉面石膏板采用工业熟石膏为主要原料，以先进的工艺与科学的配方，经机压成型制成后．再经特殊材料作表面处理，并用电子束辐射固化，或表面经仿瓷轴面技术处理，以达到高强、豪华的效果。这种石膏板可作室内顶棚吊装，也适用于对防水性要求较高的浴室、厕所、厨房的吊顶及装饰内墙墙裙。一、性能、特点、技术指标：其机械强度比普通石膏板高出１倍以上，防水性能大大增强，且具有轻质、隔音、隔热、防火等性能．能自动调节室内湿度。表而光亮，色泽艳丽夺目，耐摩擦，防尘，抗液洗，耐酸碱，防腐无毒，并具有新颖、豪华、舒适…     

丙三醇双磷酸酯三聚氰胺盐的合成

以丙三醇、三氯氧磷为原料合成了丙三醇双磷酸酯二磷酰氯（GDD）,然后将GDD与三聚氰胺反应合成了一种新型磷一氮系“三位一体”膨胀型阻燃剂一丙三醇双磷酸酯三聚氰胺盐（GDM）。研究了原料配比、反应温度、反应时间等对GDD、GDM收率的影响。合成GDD的最佳工艺条件为反应温度318K,nGGLY：nPOC=1：1,反应时间1．5h。以三乙胺为缚酸剂,GDD与三聚氰胺在313K下反应2h可以得到GDM。该阻燃剂在抗静电涂料等领域有潜在的应用价值。     

防冻液中苯并三氮唑与苯甲酸钠对多种金属的缓蚀作用

采用电化学阻抗谱研究了苯并三氮唑与苯甲酸钠对防冻液中多种金属的防腐性能.研究结果表明,在碱性条件下,苯并三氮唑和苯甲酸钠单独作为缓蚀剂时,对多种金属均能起到缓蚀作用,将苯并三氮唑和苯甲酸钠进行复配,缓蚀效果更加明显,具有协同缓蚀作用.     

6/66/610共聚尼龙树脂改性环氧胶粘剂研究

本文主要论述用6/66/610三元共聚尼龙树脂改性环氧胶粘剂的改性原理、胶粘剂的原料配方、配制方法、涂胶工艺及固化条件、基本性能数据等.此胶粘剂具有高强度、高韧性.可以在低温(-60℃) 、室温、高温(120℃)长期工作.适于制造铝质蜂窝结构及要求剥离强度和耐冲击性能好的金属与金属的胶接.     

汽车防冻液的研究与发展

本文概述了国内外汽车防冻液的研究、发展趋势并指出了防冻液今后的发展前景,并就国内外汽车防冻液的现状以及未来的发展做了详细的阐述.按照试剂组成将防冻冷却液分为以无机盐为主的常规防冻液类型和以有机酸为主的防冻液类型.普通防冻液的成分中含有对生命和环境有害的物质,而用于高档汽车的有机酸长效型环保防冻液的配方,由于价格昂贵的原因在应用方面受到了限制.因此,开发了有机酸和无机盐相结合的具有经济、高效和环保等优点的新型防冻液.新开发的防冻液产品,符合汽车防冻液质量、效能等各方面要求,可广泛应用于各类中高档汽车.     

沙棘洗护二合一洗发水的研制

以沙棘植物产品为原料，选择高效低刺激的主表面活性剂，配以有协同调理作用的辅助表面活性剂，添加配伍性好的护肤护发营养调理剂，经正交试验设计，科学配方精制而成沙棘洗护二合一洗发水。对各基体原料和添加剂单独考察其泡沫性、梳理性、洁洗力、柔软性、保湿性等性能特点，筛选优良组分。所得产品其感观指标、理化指标及卫生指标均符合行业标准ＱＢ／１９７４－９４。     

水性自交联丙烯酸金属防腐底漆的制备研究

本文研究了水性自交联丙烯酸金属防腐底漆的设计与应用,探讨了成膜物质、颜料体积浓度、防锈颜料、抗闪锈助剂等对水性金属防腐漆性能的影响。结果表明:树脂的玻璃化温度(Tg)为30 o C,用量占防腐底漆的40%;颜料体积浓度(PVC)为40%;防锈颜料选用改性磷酸锌且占底漆的20%;抗闪锈助剂选用RAYBO 60,占防腐底漆的0.3%;水性自交联丙烯酸金属防腐底漆的性能达到最优。该金属防腐底漆具有耐酸碱、耐盐水、附着力佳等性能。是一种综合性能优异、性价比高的水性自交联丙烯酸金属防腐底漆。     

常温下磷化新工艺的研究

研制了一种新型常温磷化处理液，叙述了谊液中金属磷酸盐、促进制、络合剂等几种主要成分的选择要点，确定了最佳工艺配方。该处理液具有原料价廉易得、性能稳定、无污染，成膜结合牢固，抗蚀性强等特点，工艺操作简便，技术先进，推广应用前景广阔。     

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.     

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     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with