同位素直接法膀胱造影检查膀胱输尿管近流

采用同位素直接法膀胱造影（ＤＲＣ）与Ｘ线排尿式膀胱尿道造影（ＭＣＵ），对２２例膀胱输尿管返流（ＶＵＲ）患儿进行对比检查。结果在２７次对比观察中，ＭＣＵ阳性４０侧，阳性率为７４％，ＤＲＣ阳性３５侧，阳性率为６４．８％两者差异无显著性意义（Ｐ＞０．０５），故认为ＤＲＣ在诊断ＶＵＲ时具有与ＭＣＷ相同效果，是一种切实可行的方法。另外，在ＤＲＣ漏诊的９侧返流均为Ⅰ～Ⅱ级，而ＭＣＵ漏诊的４侧重度返流，ＤＲＣ均有发现，提示ＤＲＣ不易漏诊重度的输尿管返流。     

跨共振点的周期扰动Duffing方程周期解的存在性

讨论Ｄｕｆｆｉｎｇ方程ｄ＾２ｘ／ｄｔ＾２＋ｇ（ｘ）＝ｐ（ｔ），此处ｇ（０）＝０，ｇ∈Ｃ（Ｒ），ｐ∈Ｃ（Ｒ），ｐ（ｔ）＝ｐ（ｔ＋２π），存在常数Ｋ＞０，｜ｇ＇（ｘ）｜＜Ｋ对ｘ∈Ｒ，及存在Ａ０＞０，Ｍ０＞０，ｘ＾－１ｇ（ｘ）＞Ａ０当｜ｘ｜＞Ｍ０下，给出了此类方程２π周期解存在的某些充分条件，扩展了已有的结果。     

在WFW网络下的动态数据变换

本文介绍在ＭｉｃｒｏｓｏｆｔＷＩＮＤＯＷＳＦＯＲＷＯＲＫＲＯＵＰＳ３．１（以下简称ＷＦＷ）网络环境下用ＭｉｃｒｏｓｏｆｔＶＩＳＵＡＬＢＡＳＩＣ３．０（以下简称ＶＢ３．０）实现不同计算机之间动态数据交换的方法，并给出了主要程序     

乙酸乙烯酯与乙烯基吡咯烷酮共聚的研究

用游离基溶液聚合方法合成了乙酸乙烯酯—乙烯基吡咯烷酮（Ｖｐ）共聚物。研究了反应条件对共聚合反应的影响和共聚物组成与转化率的关系，并从元素分析和￣（１３）ＣＮＭＲ的结果计算得体系的竞聚率ｒ＿１，ｒ＿２分别为０．２８２±０．０３７和０．２７８±０．０４１；ｒ＿２分别为３．７５±０．２８和３．７０±０．２９．结果表明：引发剂浓度小和投料比中单体Ｖｐ的含量高，有利于生成特性粘度［η］大的共聚物，反应时间长，［η］下降，共聚物组成与转化率的关系与用Ｍａｙｏ－Ｌｅｗｉｓ式处理得到的结果基本符合；￣（１３）ＣＮＭＲ测定链段序列分布的结果与用末端基效应模型计算的结果一致。因此，认为是以末端基效应模型机理进行，ＤＳＣ测定结果显示出共聚物玻璃化温度与组成关系符合ＦＯＸ方程，说明共聚物为无规共聚物。     

强子物理中动量的(aQ)~νK_ν(aQ)标度分布(英文)

对固定的Ｎ在紫外固定点（β（ｇ※Ｒ）＝０）,γＢ（ｇ※Ｒ）＝－０．０４５±０．０１２（－３γＢ＝αｓ,ＱＣＤ）,单个发射源之内,陶标度（ａＱ⊥）νＫν（ａＱ⊥）分布成立（Ｓ＝２～１８００ＧｅＶ）,这是强相互作用的非线性关联〈ｐ⊥（Ｎ）〉Ｎ／〈Ｎ〉,〈ｐ⊥（Ｍｉ）〉Ｍｉ／〈Ｍ〉与〈Ｎ（ｐ⊥）〉ｐ⊥／〈ｐ⊥〉存在的缘故．实验上适当迭代地截除动量可得枚举平均标度动量分布．Ｊ源作为整体而运动,质心系中的的罗仑兹因子为γＪ．     

循环伏安法中铂对乙醇定量吸附特性的研究

本文论述循环伏安法（ＣＶ）中铂（Ｐｔ）对乙醇（ＥｔＯＨ）的定量吸附特性,及其对葡萄酒中ＥｔＯＨ测定的应用问题。用自制的Ｐｔ梳状工作电极。在０．１Ｍ的ＮａＯＨ溶液中,ＥｔＯＨ的氧化峰电位为－２４０ｍＶ（相对Ａｇ／ＡｇＣｌ参比电极）。以３σ背景值计,检出限为０．０２３％（Ｖ／Ｖ）。样品分析结果准确度为９５．２－１０４．７％重现性范围２．８－３．１％ＲＳＤ（ｎ＝８）。校准曲线的线性动态范围０．１－８％（     

血细胞计数仪的三参数（MPV,MCV,RDW）及其临床意义

血细胞计数仪的三参数（ＭＰＶ、ＭＣＶ、ＲＤＷ）及其临床意义冯学冠（海南医学院附院检验科，海口５７０１０２）关键词血细胞计数仪；平均血小板体积；红细胞分布宽度；红细胞平均体积中国图书资料分类号Ｒ４４６．１１３随着现代医学技术的进步，血细胞计数仪逐渐进入...     

一种新的核子核子有效相互作用的检验

利用低能区（不大于８０ＭｅＶ）中的１２Ｃ（ｐ，ｐ′），１２Ｃ（ｐ，ｎ）及４０Ｃａ（ｐ，ｐ′）实验数据，在ＤＷＢＡ理论框架下，检验了由Ｈａｌｄｅｒｓｏｎ提出的一种新的低能区核子核子有效相互作用，分析了此种核子核子有效相互作用与Ｍ３Ｙ核子核子有效相互作用的相似性及其差异，并采用不同方法对其张量力成分进行了修正．     

H2SO4介质中Ce（Ⅲ）在铂电极上的氧化及其对Mn（Ⅱ）催化氧 …

在１ＭＨ２ＳＯ４，Ｃｅ（Ⅲ）在铂电极上的氧化－还原伏安图表明，电位扫描速度为０．０５０Ｖｓ＾－１时氧化峰电位Ｅｐａ＝０．９２Ｖ还原峰电位Ｅｐｃ＝０．６４Ｖ，△Ｅｐ＝０．２８Ｖ，能峰电位随扫描速度而变化，峰电流Ｉｐａ和电位扫描速度的平方根√ｖ不成线性关系：Ｃｅ（Ⅲ）在铂电极上的电荷迁移为准可逆过程，生成的Ｃｅ（ＩＶ）对Ｍｎ（Ⅱ）有均能催化氧化作用，催化电流峰电位在１．２６Ｖ处，催化反应受Ｍｎ（Ⅱ）。     

奇异动力系统的小周期解的存在性

对于如下奇异动力系统：Ｄ是含原点的Ｒ２中的区域，ｕ＝（ｕ１，ｕ２），Ｖ＝Ｖ（ｔ，ｕ）∈Ｃ１（Ｒ１×（Ｄ－｛０｝，Ｒ１），且Ｖ（ｔ＋Ｔ，ｕ）＝Ｖ（ｔ），Ｖｕ＝ｇｒａｄｕＶ（ｔ，ｕ）＝（Ｖ／ｕ１，Ｖ／ｕ２），本文讨论了具有奇异位势（即ｌｉｍＶ（ｔ，Ｖ）＝－∞）的二阶动力系统的小周期解的存在性问题：ｕ¨＋Ｖｕ（ｔ，ｕ）＝０。     

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