γ—Fe2O3溅射磁膜的制作

用溅射技术制作γ－Fe2O3磁性薄膜，并通过透射电子显微镜观察磁性薄膜的电子显微像和选区电子衍射环，进行了γ－Fe2O3晶体结构分析，讨论了多晶薄膜的生长条件。     

溅射氧化铁薄膜的结构和磁性

本文报导了不同制备条件下四氧化三铁薄膜的结构和磁性。实验的关键制备是水蒸气和氩气的分压之比，其变化范围从1．0到3．0。透射电子显微镜研究表明了在不同的溅射条件下都可以得到结构均匀的薄膜。扫描隧道显微镜的观察清楚地显示了薄膜的表面的三维形貌。     

溅射功率对直流磁控溅射TiO_2薄膜光学性能的影响

通过改变溅射功率,使用直流磁控溅射设备,在玻璃衬底上制备了系列Ti O2薄膜。分别用扫描电子显微镜、X射线衍射仪和椭偏光谱仪测试了Ti O2薄膜的形貌、结构及厚度。使用紫外-可见分光光度计测试了Ti O2薄膜的光学性能。使用Ti O2薄膜降解罗丹明B溶液测试了其光催化活性。研究结果表明:溅射功率增大,薄膜的透射谱及吸收谱在紫外出现明显的"红移"现象,光学带隙从3.51 e V减小到3.40 e V。适当提高溅射功率有利于提高Ti O2薄膜的光催化活性,当溅射功率为213 W时,薄膜的光催化性能最好。     

磁控溅射法制备PET基纳米TiO2抗菌薄膜的研究

利用磁控反应溅射法在PET基底上制备了纳米TiO2抗菌薄膜。利用扫描电子显微镜(SEM)对制得的溅射膜的微观形貌进行了表征，发现采用磁控溅射法在很短的时间内即可在基底上得到一层致密均匀的由纳米粒子组成的薄膜。采用光—氧抗菌实验方法，研究了溅射薄膜的抗菌性能。实验结果表明溅射后的薄膜比未溅射样品具有明显的抗菌性能。     

基于TiO_2-SiO_2的磁控溅射仪防护罩紫外反射膜的设计分析

常见的小型等离子溅射仪是配合中小型扫描电子显微镜制样必备的仪器。针对其辉光放电,对实验人员产生隐性紫外线伤害的问题,本文介绍了基于TiO2-SiO2薄膜的紫外反射膜的设计过程。通过优化获得了380nm～400nm近紫外波段具有高反射的溅射仪防护罩紫外隔离膜的参数,得出了最优化的膜层组合,为低成本地制备性能稳定、高可见光透射、高紫外线隔离的新型溅射仪防护罩紫外隔离膜提供了参考。     

磁控溅射法制备PET基纳米TiO_2抗菌薄膜的研究

利用磁控反应溅射法在PET基底上制备了纳米TiO2 抗菌薄膜。利用扫描电子显微镜(SEM)对制得的溅射膜的微观形貌进行了表征 ,发现采用磁控溅射法在很短的时间内即可在基底上得到一层致密均匀的由纳米粒子组成的薄膜。采用光 -氧抗菌实验方法 ,研究了溅射薄膜的抗菌性能。实验结果表明溅射后的薄膜比未溅射样品具有明显的抗菌性能     

PbTe薄膜磁控溅射生长及其微结构研究

利用磁控溅射法在BaF2（111）单晶衬底上生长了PhTe薄膜,通过原子力显微镜（AFM）、X射线衍射（XRD）、傅里叶红外透射谱（FTIR）表征了溅射PbTe/BaF2（111）薄膜的微结构和光学特性．测量结果显示：溅射生长的PbTe／BaF2（111）薄膜表面由规则金字塔形岛和三角形坑组成的纳米颗粒构成,且薄膜沿〈111〉取向择优生长,其晶粒大小与表面纳米颗粒大小接近．室温下傅里叶红外透射谱及其理论模拟表明溅射生长的PbTe薄膜光学吸收带隙（Eg=0．351eV）出现蓝移,与PbTe纳米晶粒的尺寸效应有关．     

利用室温转化法合成硒化银量子点

本采用室温转化法、分别用乙二胺与氨水做模板合成硒化银量子点，对合成的硒化银样品进行了X-射线衍射分析，并在透射电子显微镜下研究了模板对合成硒化银形态的影响．     

采用不同功率溅射制备氧化钛薄膜的研究

常温下,利用射频（RF）反应磁控溅射方法在K9双面抛光玻璃基底上沉积氧化钛薄膜．采用光栅光谱仪对薄膜样品的透射谱进行测试,通过椭圆偏振光谱仪测试并拟合得到薄膜的厚度、折射率和消光系数等光学参数,借助掠入射角X-射线衍射对薄膜的结晶状态进行了测试．实验结果表明：不同溅射功率下沉积的样品呈非晶态,在40～100W范围内,溅射功率越大,薄膜的沉积速率越大,但溅射功率对折射率和消光系数影响不大．     

颗粒尺寸和数密度可独立调控的Pb纳米颗粒薄膜的气相制备

采用基于磁控等离子体团簇束流源的低能团簇束流沉积制备不同形态的Pb纳米颗粒薄膜。通过透射电子显微镜TEM对颗粒的尺寸、数密度进行表征分析,建立磁控等离子体团簇源及低能团簇束流沉积过程的可调参数——溅射气流、缓冲气流、溅射电压电流、沉积时间等与颗粒尺寸、数密度的对应关系,并通过对参数的调整优化获得Pb纳米颗粒薄膜中颗粒尺寸和数密度的独立调控。     

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