电镍含钴渣萃取分离钴的研究

以电镍含钴渣为原料，通过酸溶浸出，氧化还原除铜、铁矾除铁及氟化盐除碱土金属工序得到含高镍低钴混合料液；研究了采用２－乙基己基膦酸２－乙基己基酯萃取剂对钴、镍的萃取性能和分离系数的影响；探讨了钴、镍萃合物的电子光谱，并对所得到的固体萃合物的热性质进行测定，说明在不同萃取温度条件下，利用钴、镍萃合物的不同构型，在工艺上能有效地提高钴、镍的分离效率；对负载钴、镍有机相采用洗涤、反萃工艺，可使萃取余液中的钴、镍比达３００以上．     

5709萃取镍(Ⅱ)的宏观动力学研究

采用改进的恒界面池进行了异己基磷酸（１－甲基－庚基）酯（国内代号５７０９）－正庚烷体系从硫酸介质中萃取镍（Ⅱ）的动力学研究，以实现钻、镍的萃取分离。研究了水相中镍浓度， ｐＨ值和有机相中 ５７０９的浓度，两相内搅拌器的转速，两相界面积和操作温度对镍（Ⅱ）萃取传质的影响。采用热力学方法处理了实验数据，并建立了相应的数学模型。结果表明，水相中镍离子的扩散和镍的１－２络合物生成的界面化学反应为主要控制步骤。     

关于用HDEHP从硫酸体系中液—液萃取分离镍和锌铁的研究

利用ＨＤＥＨＰ从硫酸体系中液－液萃取分离镍和锌铁，研究了ＨＤＥＨＰ对Ｆｅ＾３＋，Ｚｎ＾２＋，Ｎｉ＾２＋，Ｃｕ＾２＋的萃取行为，反萃取条件及三级连续萃取。结果表明：萃取除铁锌符合硫酸溶液交化的要求外，镍的直收率达９８％以上，无废渣。     

N235萃取分离废旧镉镍电池中钴和镍的研究

研究用萃取剂N235萃取分离度旧镉镍电池中钴镍的基本特性及主要影响因素．结果表明，酸液的浓度和溶液中氯离子的浓度是主要影响因素，用水作为反萃取剂，经过两级反萃，可以使得钴的反萃取率达到99．6％．并对回收制血Ni(OH)2产品进行了初步的探讨．     

磺酰胺类萃取剂对锌,镉的萃取性能

研究了２－（十二烷基苯磺酰胺）噻唑和２－（十二烷基苯磺酰胺）苯并噻唑萃取锌，镉的行为，研究表明，这两种萃取剂在一定的条件下，能有效地萃取锌（ＩＩ）和镉（ＩＩ）并采用斜率法探讨了它们以锌（ＩＩ）和镉（ＩＩ）的萃取机理。     

关于用HDEHP从硫酸体系中液一液萃取分离镍和锌铁的研究

利用ＨＤＥＨＰ从硫醚体系中液一液革取分离镍和锌铁，研究了ＨＤＥＨＰ对Ｆｅ￣（３＋）Ｚｎ￣（２＋）、Ｎｉ￣（２＋）、Ｃｕ￣（２＋）的萃取行为，反萃取条件及三级连续萃取。结果表明：萃取除铁锌符合硫醚镍溶夜净化的要求外，镍的直收率达９８％以上，无废渣     

新试剂QADHB固相萃取光度法测定微量钴

根据新试剂2－（2－喹啉偶氮）－1，5－苯二酚（QADHB）与钴的显色反应有Waters Porapak Sep-Park固相萃取小柱对显色络合物的固相萃取，建立了一种测定生物样品痕量钴的新方法，在pH＝4．4－HAC－NaAc缓冲介质中，溴化十六烷基三甲基铵（CTMAB）存在下，QADHB与钴反应生成2：1稳定络合物，该络合物可用Waters Porapak Sep-Park固相萃取小富集，乙醇洗脱后用光度法测定，可测定痕量钴，方法用于几种食品样中痕量钴的分析，结果令人满意。     

用2-羟基-4-仲辛氧基二苯甲酮肟从氨性溶液中萃取分离钴镍(英文)

本文应用国产羟肟类萃取剂2-羟基-4-仲辛氧基二苯甲酮肟(代号N_(530))进行了萃取分离钴镍的研究。实验所用有机相为20%N_(530)磺化煤油溶液,水相分别为钴(Ⅱ)、镍(Ⅱ)氨性硫酸盐、氨性氯化物及氨性碳酸盐溶液,研究结果表明:钴(Ⅱ)镍(Ⅱ)的萃取率均随水相平衡pH值及铵盐浓度的升高而增大;温度的影响不显著,钴(Ⅱ)的萃取速率大于镍(Ⅱ)的萃取速率。N_(530)分离钴(Ⅱ)镍(Ⅱ)可用反萃取方法,即先用小于0.05mol/LH_2SO_4溶液反萃取镍(Ⅱ)后,再用NaCl(50g/L)和HCl(4mol/L)的混合液反萃取钴,经多级反萃可使钴反萃完全。若在水相添加适量的(NH_4)_2S_2O_8,或通入空气,或把料液敝开静置,均可使钴(Ⅱ)氧化成钴(Ⅲ)的氨合配离子。此时钴的萃取率下降,而镍的萃取率不变。这样控制适合的条件,便可以通过单级萃取有效地分离钴镍研究。结果还表明,在酸性溶液中铜(Ⅱ)、铁(Ⅲ)可被N_(530)萃取,但钴、镍不萃,因此可用萃取方法净化除去料液中所含的铜、铁这些杂质金属。     

复合萃取色谱富集原子吸收法测定环境水中痕量铁、钴、镍、锰

本文研究了以８—羟基喹啉和２—巯基苯并噻唑为复合萃取剂，活性硅胶为载体的柱式萃取色谱法对环境水中铁、钴、镍、锰的吸附富集和洗脱条件。结果表明：在ｐＨ＝７—８时，回收率达９５％以上，富集倍数为２００倍。     

镍电解液萃取净化研究-用二(2.6-二甲基-4-庚基)磷酸萃取净化流程的数学模型及最优化计算

本文提出用二（２．６－二甲基－４－庚基）磷酸［ＨＤ（ＤＩＢＭ）Ｐ］作为萃取剂，用于镍阳极电解液中的Ｎｉ２＋、Ｃｏ２＋、Ｃｕ２＋和Ｆｅ３＋的萃取分离流程。在一定的工艺条件下，测定了各种金属离子的平衡数据，建立了Ｎｉ２＋、Ｃｏ２＋、Ｃｕ２＋和Ｆｅ３＋的分配模型。并在此基础上，针对含有 １４０ 克／升 ＳＯ４－２和 ４０克／升 Ｃｌ－的镍阳极电解液体系对其中 Ｎｉ２＋、Ｃｏ２＋、Ｃｕ２＋分离工艺进行了最优计算，并确定了水法处理该溶液的萃取流程。所得最优工艺参数为：温度＝５０℃；ＨＤ（ＤＩＢＭ）Ｐ浓度＝０．２３Ｍ； ｐＨ＝５，７４； ３级，有机相对于水相流比Ｏ／Ａ＝０．３１。此时，镍回收率为９９％，钴回收率为９４．１％，铜回收率为９９．９９％。此项研究由北京第五研究所提供萃取剂。     

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     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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