桥面铺装黏结材料的制备与性能研究

制备并研究了新型桥面黏结材料.选用柔性和耐久性能优越的单组分聚氨酯作为黏结材料,探讨了其与集料的黏结机制.利用优质集料和国际稀浆封层协会微表处技术指南(ISSA A143)中Ⅱ型级配制备出了新型桥面黏结材料.性能研究表明其具有良好的抗拉伸剪切性能、抗疲劳性能和抗水损害性能.该材料是一种性能优良的桥面铺装材料.     

彩色胶结料的研究与应用

通过选择组成材料的不同配比,可配制出性能与优质石油沥青相比拟的系列彩色胶结料．该胶结料的性能指标达到了日本同类产品的技术标准,适用于不同气候的地区,且具有优良的路用性能．     

N－酰基谷氨酸系表面活性剂在皂类洗涤剂中的应用

Ｎ－酰基谷氨酸及其盐类是一类性质温和、性能优良的表面活性剂。本文叙述了Ｎ－酰基谷氨酸盐在皂类产品中的应用配方及生产工艺。结果表明Ｎ－酰基谷氨酸盐是制备高档皂的优良表面活性剂，它可以作为主要原料或辅助原料而用于制备洗涤皂、合成皂或优质香皂。     

连铸中间包涂料的研究

采用优质镁砂为主要原料,选择合适的结合剂与复合外加剂,可制得性能优良的中间包涂料;采用自制纸纤维,可明显降低涂料热传导性能,适当引入钙质材料,有利于材料的解体性.     

丙烯酸系聚合物水溶胶的合成及性能

用溶液聚合法了ＭＭＡ／ＢＡ／ＡＡ丙烯酸系三元共聚物,分别以氨水和三乙醇胺为中和剂对其进行氨化处理,制得了丙烯酸系共聚物水溶胶,研究了丙烯酸用量、中和剂种类及用量、氨化温度和固化剂用量对水溶胶性质及涂膜性能的影响,找到了制备优质水溶胶的最佳工艺条件,为制备性能优良的高光泽涂料提供了依据。     

低合金高强度结构钢埋弧焊丝盘条的研制

为确保低合金高强度钢焊接结构的安全度，研制生产焊缝金属具有相应强度并有优良的抗裂性能和足够的塑韧性的焊材，与低合金高强度钢相匹配显得十分迫切．对低合金高强度结构钢埋弧焊丝盘条的成分进行科学设计，控制盘条中杂质元素含量，采用合理的生产工艺，得到埋弧焊丝盘条，再其表面质量、金相组织、盘条及其焊接接头性能等进行系统试验分析，结果表明该盘条综合性能优良，在国家重点工程——润扬长江公路大桥的建设中得到批量运用，为我国高性能焊接结构提供了一种优质焊接材料．     

连铸中间包涂料的研究

采用优质镁砂为主要原料，选择合适的结合剂与复合外加剂，可制得性能优良的中间包涂料；采用自制纸纤维，可明显降低涂料热传导性能，适当引入钙质材料，有利于材料的解体性．     

西藏野生披碱草属牧草（Elymus nutans）栽培试验研究

本试验于2006年在拉萨当雄、那曲和山南鲁琼采集了耐寒、耐旱的优质野生披碱草种。2007年,在西藏大学新校区试验田对其进行了大田栽培,观察披碱草的物候期、生长势,并对其生物量、营养成分等进行统计比较分析。结果表明：野生披碱草,在人工种植条件下生长旺盛,生产性能好,品质优良,营养丰富,如果进行大面积推广种植,建立人工草场,可在西藏提供优质饲料,大大缓解冷季牧场的压力,对促进西藏畜牧业可持续发展,维持生态平衡等具有重要意义。     

盐水缓蚀剂WP—321的合成与性能评价

通过对反应物反应温度,反应时间,原料比进行筛选,合成了１种性能优良的盐水缓蚀剂Ｐ３２１并确定其最佳加量,用失重法了该缓蚀剂在盐水中对钢片的缓蚀性能,研究结果表明,ＷＰ－３２１缓蚀剂的抗盐好,在钻井液中具有良好的溶解分散性,与其它钻井处理剂配伍性良好,是１种优质的盐水缓蚀剂。     

关于高节竹丰产栽培技术的具体探析

高节竹是我国优质的小径竹竹种，具有较强的适应性，而且成林快、产量高，食用和材质性能都极其优良，在我国南方地区具有广泛的种植。要想达到高节竹的高产丰收，就需要从各阶段进行科学合理的管理。本文主要从高节竹的选地、栽培、抚育等主要方面进行了具体阐述，为大力推广种植和丰产增效起到一定的指导作用。     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

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