胶束相分离模型在环糊精/羧酸酯体系中的应用

作者研究了环糊精对羧酸酯（PNPA和PNPP）水解的影响，将胶束的相分离模型用来对其作动力学处理，求得了相关的热力学和动力学参数。结果表明，在有环糊精存在时，PNPA和PNPP的水解速率都增加了，并遵循以下的顺序：kc(α－环糊精）＞kc(γ－环糊精）＞kc(β-环糊精），而其结合常数的大小顺序则恰恰相反，即Ks(β-环糊精）＞Ks(γ-环糊精）＞Ks(α-环糊精）。     

冷轧钢板变形织构的理论模拟

采用取向分布函数法研究了钢板中的轧制织构。其中以｛１１０｝＜１１１＞滑移系滑移为基本变形机制，利用Ｓａｃｈｓ，Ｔａｙｌｏｒ，ＲＣ和ＰＣ等模型对轧制织构进了理论模拟。这些理论模型可以再现体心立方金属冷轧过程中晶粒取向在｛１１２｝＜１１０＞，｛１１１｝＜１１０＞，｛１１１｝＜１１２＞及｛００１｝＜１１０＞附近的聚集过程。分析表明｛１１０｝＜１１１＞滑移系的滑移是体心立方金属十分重要的变形机制，适当参考     

基因工程菌Pichia pastoris连续培养的生长及抑制动力学

在同一稀释率μ（μ＝0．14h^-1）下用不同浓度的甘油流加进行连续培养,研究甘油浓度对基因工程菌毕赤酵母（Pichia pastori）生长的影响。结果表明甘油浓度对细胞生物量（DCW和WCW）、底物得率系数（Yx/s）、底物比消耗速率（qs）、呼吸熵（RQ）与二氧化碳释放率（CER）都有影响,在低甘油残留浓度（＜63．3g／L）下,甘油是激活剂,菌体生长符合Monod方程,Ks＝19．62g／L,甘油激活常数Ka＝19．45g／L;而在高甘油残留浓度（＞63．3g/L）下甘油是抑制剂,菌体生长特征符合Haldance方程,Ks＝0．014g／L,K1=156．67g／L。毕赤酵母生长的甘油抑制浓度为55．2g／L。     

一类捕食——被捕食种群系统的定性分析

本文讨论一类具有常数存放率与收获率的捕食—被捕食两种群系统．其数学模型为（1），当h＞0，x0＞D时，得到正平衡点R（x，y）为全局稳定的结论，当h＜0，＜BD＜1时，正平衡点R（x，y）周围不存在极限环，当h＜0，＜BD＜1，x＜D＜x2时，正平衡点R（x，y）为全局稳定．     

强库仑关联下HUBBARD—HIRSCH模型铁磁相变──Ⅰ．零温平均场理论

本文推广Ｈｉｒｓｃｈ对耦合Ｈｕｂｂａｒｄ—Ｈｉｒｓｃｈ模型的工作到强耦合区域．在δ＞ｔ／Ｕ条件下，用Ｓｔｏｎｅｒ平均场理论，得到了系统的零温相图．本文所用的耦合常效的大小接近窄能带金属的实际情况．此外在一定参数下求得一部分磁化铁磁相区域，有助于解释弱铁磁现象．     

排斥型有效互作用下的超导电性

分析了电子间在有效排斥互作用下的超导电性．发现当能带宽度Ｗ＞Ｅｃ，ｏ（）时，存在电子对；当Ｗ＜Ｅｃ，ｏ时，电子对消失．从而认为在电子对消失的区域，描写超导电性的应该是某种准粒子对，而不是电子对．     

高能球磨对TiFe合金电极放电性能的影响

研究了球磨对TiFe合金电极放电性能的影响.结果表明,对采用电弧熔炼制备的TiFe合金进行短时间球磨处理可以明显改善其活化性能;采用球磨方法制备的TiFe合金因含有部分TiFe金属间化合物的固溶体,其放电容量高于电弧熔炼制备并经过球磨处理的TiFe晶态合金.     

二次式时滞差分系统稳定区域的估计

曾建立了二次式时滞差分系统定量的稳定性结果，其中时滞ｒ＞０是任意的整数；也曾对形式较为简单的二次式时滞差分系统作出了时滞ｒ＜ｒ＊时的稳定区域和渐近稳定区域估计，其中ｒ＊是在一定条件下的最大可接受的时滞．本文将对一般形式的二次式时滞差分系统作出时滞ｒ＜ｒ＊时的稳定区域和渐近稳定区域估计，从而推广已有的相应结果．     

M_3（CO）_9（μ_3─CO）（μ_3—S）（M＝Fe，Ru，Os）电子结

本文用ｓｃｃ—ＤＶ—ｘ。法计算了Ｆｅ＿３（ＣＯ）＿９（μ＿３─ＣＯ）（μ＿３─Ｓ），Ｒｕ＿３（ＣＯ）＿９（μ＿３─ＣＯ）（μ＿３─Ｓ）和Ｏｓ＿３（ＣＯ）＿９（μ＿３─ＣＯ）（μ＿３─Ｓ）的电子结构，结果表明，三个分子的分子轨道能级分布明显分成若干组，费米能级的高低为Ⅱ＞Ⅲ＞Ⅰ，三分子的ＨＯＭＯ和ＬＵＭＯ能级组主要为Ｍ─Ｃｂ，Ｍ─Ｓ和Ｍ─Ｍ特征键，金属参与成键和反键轨道的主要成份是ｄ轨道，并有比例较小的Ｐ轨道。三分子所带正电荷Ⅱ＜Ⅲ＜Ⅰ，与分子的电负性数据相一致，反馈π键的强度Ⅱ＜Ⅲ＜Ⅰ．在亲核反应中，亲核试剂首先与金属原子或端羰基的碳原子发生作用．     

二维高阶奇异积分

二维高阶奇异积分高红亚（河北大学电子系，０７１００２，河北保定）文【卫」考虑了奇点位于区域内部的二维高阶奇异积分，现在我们进一步考虑边界奇点情形．设ＧＥＣｓ（０＜ａ＜ｌ）为有界单连域，／（ｚ）６Ｃ（己），ｔ６１一月．以ｔ为中心，充分小的。＞０为半径作...     

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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