超临界溶液快速膨胀法制灰黄霉素微粒的预膨胀

用均相成核理论分析了超临界ＣＯ２快速膨胀法制备灰黄霉素微细颗粒过程中的预膨胀操作。指出在类似于灰黄霉素这样在反常冷凝区进行的ＲＥＳＳ过程,预膨胀段的加热不会导致溶质灰黄霉素在预膨胀段提前析出。     

灰黄霉素超临界溶液快速膨胀法制细的预膨胀

用均相成核理论分析了超临界ＣＯ２ 快速膨胀法（ＲＥＳＳ）制备灰黄霉素微细颗粒过程中的预膨胀操作。指出在类似于灰黄霉素这样在反常冷凝区进行的ＲＥＳＳ过程,预膨胀段的加热不会导致溶质灰黄霉素在预膨胀段提前析出。     

超临界溶液快速膨胀制备灰黄霉素超细微粒

研究了含夹带剂的超临界溶液快速膨胀制备灰黄霉素超细微粒。结果表明，预膨胀压力和夹带剂浓度越大，沉析微粒越小；预膨胀温度越高，沉析微粒越大。模拟了超临界溶液在喷嘴入口段、喷嘴以及喷嘴后自由喷射段中的流速、压力、温度、过饱和度以及成核速率的分布。     

鱼油脂肪酸酯与超临界 CO_2 相平衡测定及关联方法

介绍了鱼油脂肪酸酯与超临界ＣＯ２相平衡测定和关联的常用方法．同时给出了超临界ＣＯ２—硬脂酸乙酯、超临界ＣＯ２—油酸乙酯、超临界ＣＯ２—亚油酸乙酯三个二元系的相平衡关系．     

超临界CO2与甲醇直接合成碳酸二甲酯

以碳酸钾和碘甲烷为催化剂,在ＣＯ２的临界点附近研究了由ＣＯ２与甲醇直接合成碳酸二甲酯（ＤＭＣ）的新工艺,考察了反应温度及反应压力对合成ＤＭＣ的影响;根据超临界ＣＯ２所具有的性质,讨论了该反应的机理。     

超临界CO2提取树兰花浸膏

在３３－５５℃，１０．０－２４．０ＭＰａ范围内测定了超临ＣＯ２对树兰花浸膏的溶解度，研究了传质过程的影响因素。树兰花适当粉碎，能有效地提高过程传质速率，提高产品收率；超临界ＣＯ２中溶质浓度随ＣＯ２的停留时间增加而增加。     

用聚集型状态方程关联CO2在超临界区的PVI数据

根据物质分子在超临界区、严重聚类的分子热力学模型，导出了聚集型Ｖａｎｄｅｒｗａａｌｓ方程并用此方程关联了ＣＯ２在超临界区的ＰＶＴ数据，取得了较好效果。     

用聚集型状态方程关联CO_2在超临界区的PVT数据

根据物质分子在超临界区、严重聚集的分子热力学模型,导出了聚集型Ｖａｎｄｅｒｗａａｌｓ方程,并用此方程关联了ＣＯ２在超临界区的ＰＶＴ数据,取得较好效果     

用超临界CO2从槐花米中提取芦丁试验研究

用超临界ＣＯ２萃取槐花米中的芦丁，对这一新方法进行了可行性试验研究。试验表明两步分离法是合适的，第一步槐花米经预处理，第二要用超临界ＣＯ２萃取。     

超临界CO2萃取固态物料传质效果的试验研究

研究了原料的预处理方式及式及萃取器内原料的装填方式对超临界ＣＯ２萃取固体物料传质效果的影响。结果表明，降低原料的粒度，改变原料的形状，降低原料的自然堆积比重，采用塔板式料方式等措施可以明显提高超临界ＣＯ２萃取固态物料的传质效果。     

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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