氯盐体系中铋湿法冶金的基础研究

根据同时平衡原理，对氯盐体系硫化铋矿浸出过程和三氯化铋水解过程进行了详细的热力学分析，绘制了Ｂｉ２Ｓ３－ＨＣｌ－Ｈ２Ｏ系Ｅ－ｐＨ图，Ｅ－［Ｃｌ－］Ｔ图和Ｅ－［Ｂｉ３＋］Ｔ图以及三氯化铋水解过程ｐＨ－［Ｂｉ３＋］Ｔ和溶解度－ｐＨ图，为铋湿法冶金提供重要的理论依据     

MnO_2氧化法制取Ba（OH）_2最佳工艺条件研究

用Ｂａ（ＯＨ）２除去工业铝酸钠溶液中的硫，将产生大量、废渣（其主要成份为ＢａＳＯ４，ＢａＣＯ３），和消耗大量Ｂａ（ＯＨ）２。本文提出了利用除疏废渣并补充重晶石（ＢａＳＯ４）作为原料，用软锰矿（ＭｎＯ２）作氧化剂，制取价廉的Ｂａ（ＯＨ）２的工艺方案，并对ＭｎＯ２氧化工艺过程进行了深入研究。通过（αｍｘτ）［Ｌ９（３）２］正交试验，得到了分子比（αｍ），反应时间（τ）与氢氧化钡产出率（ηＢＨ），钡的利用率（ηＢＴ）关系的回归方程，找到了最佳工艺条件。     

双（2,2‘—二羟基—1,1’—联苯）硼酸的改良制法与性质

描述双（２，２’－二羟基－１，１’－联苯）硼酸的几种改良制法和性质，２，２’－二羟基－１，１’－联苯与（ＭｅＯ）３Ｂ，Ｈ３ＢＯ３－ＭｅＯＨ，Ｈ３ＢＯ３ａｋ Ｈ３Ｂ·ＳＭｅ２，在适宜介质中反应得到双（２，２’－二羟基－１，１’－联苯）硼酸溶剂合物，在碱存在下，它们高产率地转化为相应盐的溶剂合物，并且溶剂合物的热稳定性随溶剂极性的增加而递增。     

苯并噁嗪二苯醚预聚体的合成研究

以甲氧基次甲基二苯醚低聚物为基础合成了苯并口恶嗪预聚物（ＢＯＤＰＯ）,用Ｈ－ＮＭＲ、ＩＲ表征了该预聚物的结构,讨论了反应温度、溶剂的极性等因素对合成预聚物的结构和组成的影响。研究结果表明,ＢＯＤＰＯ预聚物的成环率在９０％以上,预聚物的组成,在很大程度上依赖于反应介质或溶剂的极性。     

极弱酸恒pH法测定条件的研究

应用误差理论研究了恒ｐＨ法测定极弱酸时ｐＨ值对浓度和电离常数的误差产生的影响,给出了适宜的ｐＨ值范围：ｐＫａ－０．５〈ｐＨ〈ｐＫａ＋２．０;对ＮＨ４Ｃ１和Ｈ３ＢＯ３进行了实验研究。     

罗丹明6G·四溴荧光素等色染料离子对浮选光度法测定金

提出了等色染料离子对浮选光度法。向罗丹明６Ｇ（Ｒ６Ｇ）和ＡｕＢｒ－４的甲苯萃取物Ｒ６ＧＡｕＢｒ４中,加入ｐＨ＝５５的（ＮＨ４Ａｃ－ＨＡｃ）缓冲溶液,使Ｒ６Ｇ离子进入水相,并向其中加入与Ｒ６Ｇ颜色相同的四溴荧光素（ＴＢＦ）,形成等色染料离子对Ｒ６Ｇ＋·ＴＢＦ－被甲苯浮选。将浮选物溶于丙酮,于５３０ｎｍ处光度测定。由于２个染料分子（Ａｕ∶Ｒ６Ｇ∶ＴＢＦ＝１∶１∶１）同时吸光,方法具有很高的灵敏度,ε＝２０×１０５Ｌ·ｍｏｌ－１·ｃｍ－１;金含量在０～０３６ｍｇ／Ｌ服从比耳定律,相对标准偏差为２９％,方法应用于粗铜中金的测定,结果满意。     

DA-201树脂回收、净化废水中苯酚的研究

作者研究了ＤＡ－２０１吸附树脂回收，净化废水中的苯酚的工艺条件。实验表明：当废水的ｐＨ〈７时，吸附树脂不仅能回收苯酚，而且不产生二次污染，失效树脂使用５％的ＮａＯＨ溶液或甲醇脱酚，其效率接近１００％。     

分子内电荷转移荧光探针DMAHF的介质效应及与DNA的作用

研究了分子内电荷转移荧光光探针４’－４,Ｎ－二甲基氨基－３－羟基黄酮的溶剂效应及其在ＤＮＡ或其它粘性介质中的荧光行为。结果表明,溶剂极性对ＤＭＡＨＦ的吸收光谱产生相对较小的影响,而对其荧光产生显显影响,表明了典型的分子内电荷转移荧光特征。ＤＮＡ的存在可以显增强探针的ＩＣＴ荧光。     

由简单芳胺合成三苯二恶嗪荧光染料

以简单芳胺为原料合成了八个三苯二恶嗪型荧光染料，测定了它们在甲苯和ＤＭＦ中的吸收光谱和荧光光谱。结果表明，随着溶剂极性增大，荧光量子产率减少，而Ｓｔｏｋｅｓ位移增大。当在３－，１０－位引入－ＯＣＨ３时，甲苯中，染料荧光量子产率为７５％。     

维生素C或H2O2系统中HO对DNA的损伤作用

采用紫外分光光度法，ＴＢＡ法，琼脂糖凝胶电泳法检测维生素Ｃ或Ｈ２Ｏ２体系对ＤＮＡ的作用，发现ＤＮＡ在２６０ｎｍ处吸光值下降，检测到ＤＮＡ的脱氧核糖损伤，观察到ＤＮＡ链降解，痕量的过渡金属离子Ｆｅ＾２＋等能加速上述反应的进行，各种ＨＯ清除剂可抑制上述反应。表明在上述两类反应体系中产生了ＨＯ，是ＨＯ破坏ＤＮＡ的碱基和脱氧核糖，降解ＤＮＡ链。     

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