西宁地区温棚栽培番茄品种筛选

以青海大红番茄为对照,引入６个番茄品种为试验材料,筛选适宜西宁地区温棚栽培的中、晚熟番茄品种。结果表明：中杂９号、中蔬６号、中杂８号在植物学性状、果实商品性和产量方面均优于对照。     

叶用莴苣在西宁地区品种比较试验研究

从我国初选的适合于冷凉地区种植的十一个叶用莴苣品种在植物学特性，生育期，干物质含量和生长率几方面进行品种比较试验，筛选出适合西宁地区种植的生菜品种。     

西宁地区大果沙棘不同基质苗木繁殖试验

在西宁地区以向阳、楚伊、中国沙棘3种良种为研究对象,开展了大果沙棘在不同基质中的扦插育苗研究。结果表明：在不同基质条件下,沙棘不同品种的成活率及生长量表现出不同的生长效果。同一基质时,各品种成活率表现为中国沙棘〉楚伊〉向阳;森林土,河沙按照1：3比例均匀混拌的基质,品种成活率和苗木年高生长提高显著,生长效果好。     

西宁地区节能日光温室辣椒品比实验

以青海省本地品种乐都长辣椒为对照,引入国内育成的5个辣椒品种为试验材料,筛选适宜西宁地区节能日光温室辣椒主栽新品种,试验表明,中椒10号,WH7号在早熟性,总产量和抗病性等方面均优于对照,适宜在西宁日光温室中推广种植。     

西宁地区栽培燕麦开花生物学特性的研究

本文对西宁地区栽培燕麦开花生物学特性进行了观察研究。结果表明,皮燕麦和莜麦以及两者内各品种间具有各自的“最佳”开花时间和“最优”开花方式,西宁地区栽培燕麦定日只有一个开花高峰,高原特有的气候条件对开花生物学特性有较大的影响。     

樱花引种栽培试验

通过樱花的引种栽培,对其在西宁地区的物候期、生长状况、抚育管理、越冬情况、栽植技术等方面进行了观测和研究,筛选出可以露地栽培的樱花品种。     

青海春小麦幼穗分化和主茎叶龄出现频率关系的探讨

应用叶龄指标促控法就青海西宁地区不同播期，不同品种类型的春小麦主茎叶龄再现频率与幼穗分化的关系作了进一步分析和探讨，为加强高寒地区春小麦田间管理和提高产量提供科学依据。     

西宁地区化工企业发展现状与思路

针对西宁地区（含大通县、湟中县、湟源县）化工企业的基本情况、发展现状及面临的问题,探讨西宁地区化工企业改革方略、发展思路及方向。     

播种时期对春小麦籽粒增重过程和蛋白质含量变化的影响

以阿勃等四个春小麦品种（品系）为材料，分析了播种时期对西宁地区春小麦粒重及蛋白质含量的影响，结果表明，播种时期对春小麦籽粒增重过程和籽粒发育过程中蛋白质含量的变化规律没有显著影响。晚播使籽粒蛋白质含量增加，西宁地区播期晚至４月１５日粒重也有增加趋势，但随着播期推迟，春小麦单位面积穗数和每穗粒数明显减少，籽粒产量和蛋白质产量随之下降。     

西宁地区油菜蚜虫寄生蜂及重寄生蜂初步研究

西宁地区油菜蚜虫的寄生蜂为菜蚜茧蜂、燕麦蚜茧蜂和烟蚜茧蜂,优势种为菜蚜茧蜂,重寄生蜂为蚜虫金小蜂,雌雄性比分别为1．26：1、1：1、1：1和1．27：1．桃蚜和甘蓝蚜寄生蜂的寄生率在11．5％～18％之间,甘蓝蚜较低,在0．73％～1．44之间．蚜茧蜂在三种蚜虫上的寄生孵化率大约在85％左右,在西宁三个不同地区的寄生孵化率约为75％．     

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.     

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     

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

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