山西大同和朔州地区高速公路中央隔离带的绿化设计和养护

从山西省大同和朔州地区高速公路建设面临的生态环境条件出发,本文提出中央隔离带绿化设计和养护的原则,讨论了绿化设计中植物种类的选择及配置、养护中的浇水、施肥以及病虫害防治和整形修剪等措施。     

浅谈高速公路绿化

针对高速公路特定的立地条件如何绿化进行了初步探讨,并提出了高速公路绿化设计的原则、高速公路绿化植物的选择以及高速公路绿化中应注意的几个问题。     

高速公路景观绿化的探讨

高速公路景观绿化是实现公路建设可持续发展的需要,本文通过高速公路景观绿化设计的基本思路、设计要点、景观绿化栽植的分析,对高速公路景观绿化进行探讨,并提出了景观绿化时注意的问题及景观绿化中植物的选择.     

高速公路环保绿化相关问题研究

本文以高速公路环境绿化为研究对象,分析研究了高速公路绿化的概念,高速公路绿化的作用以及高速公路环境绿化的植物配置模式,全文是笔者长期从事高速公路相关管理工作基础上的理论升华,相信对从事相关工作的同行有着重要的参考价值和借鉴意义。     

浅析高速公路边坡加固及防护措施

本文分析了影响边坡稳定的因素,指出了目前我国高速公路建设中边坡防护与加固的类型,并归纳了国内高速公路边坡植被技术方法,分析了植物对高速公路边坡的防护作用原理及绿化效果,对各种加固防护措施与植物绿化防护进行了对比分析.     

沈阳地区高速公路草坪病虫害的防治

通过对沈大、沈山、沈本、沈阳环城等多条高速公路的绿化养护实践,重点对沈阳地区高速公路草坪的病虫害防治等方面进行了总结论述,探讨沈阳地区高速公路草坪病虫害防治的方法,为高速公路的绿化养护提供借鉴。     

浅谈高速公路中央分隔带绿化模式

高速公路中央分隔带具有分隔交通、诱导视线、保障安全行车等重要作用。本文介绍了高速公路中央隔离带的立地条件、常用的绿化模式、建立分隔带植物选择的原则,并对高速公路中央分隔带的绿化提出建议。     

高速公路水保方案编制生物措施

1 概述高速公路的水保方案编制的生物措施是以 柳高速公路绿化设计为例巉柳高速公路绿化设计是巉柳高速公路水保方案的重要特色之一根据巉柳高速公路工程水保方案编制大纲要求从植物生物学生态学及环境美学的角度结合巉柳高速公路沿线气候地形地理环境特点阐述了巉柳高速公路不同部位绿化设计指导思想设计特色2 绿化设计指导思想在绿化设计中要力求反映时代风貌甘肃特色及省会兰州市的现代化气息并结合高速公路车速快车流量大车型以客车和轿车为主运量以客运为主的特点绿化应突出景观生态效益满足高速公路绿化功能的需要贯彻四季常绿三季有…     

高速公路绿化设计要求及实施

本文针对高速公路独特的地里特征，从绿化整体规划设计，以及绿化过程的苗木选择中所牵扯的树木、花卉、草坪及后期绿化的养护管理工作等问题做了要求与分析，提出了高速公路绿地规划、设计的原则，并讨论了此类绿地植物的选择和配植方式，最后对高速公路绿地的养护管理进行了探讨。     

山区高速公路绿化与景观研究——以安徽黄塔(桃)高速公路为例

以安徽黄山地域正在修建的黄塔(桃)高速公路为例,探讨山区高速公路的景观与绿化的建设模式.将山区高速公路景观划分为中分带绿化、边坡绿化、节点绿化以及道路沿途绿化四个部分,对各典型区域治理方案进行设计以及具体的植物选择进行分析,以期通过黄塔(桃)高速的建设经验对今后其它山区高速公路建设提供有效的借鉴与帮助.     

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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