西安沪河城市人造水面富营养化分析

通过对沪河城市人造水面水体中叶绿素（Chl．a）、透明度（SD）、总氮（TN）、总磷（TP）与化学需氧量（COD）等水质参数实际监测的统计计算,采用综合营养状态指数法对西浐安河城市人造水面水体富营养状况进行了分析和综合评价,计算统计结果表明,泸河城市人造水面水质已呈中度富营养化等级,沪河城市人造水面水质呈有机型污染。并针对其现状,提出了以截污、清淤、补水、生物净化等工程为主的综合防治对策。     

论“清淤”、“补水”与“截污”在莲湖涌综合整治工程中的关联性和必要性

从广州市番禺区莲湖涌的水环境现状入手,根据莲湖涌地区的河道现状和污染情况,分析造成污染的原因,据此提出切实可行的综合整治措施：清淤、截污、补水,并据此论证上述三种措施在综合整治工程中的关联性及必要性。     

控源截污和生态补水对秦淮河水质的影响

以秦淮河流域分汊型河道为例,通过水文水质调查、水环境模型计算,研究控源截污和生态补水联合措施对水质改善的影响.结果表明:为达到国家Ⅳ类水质标准,直排污水量的削减率可随生态补水流量的增加而减小,补水流量可随污水的接管率增加而减小.对秦淮河近期采取控源截污与生态补水联合治理措施,远期通过截止82%的污水流量并提高污水接管率达95%以上,可以保证断面水质达标.     

西安浐河城市人造水面富营养化分析

通过对浐河城市人造水面水体中叶绿素(Chl.a)、透明度(SD)、总氮(TN)、总磷(TP)与化学需氧量(COD)等水质参数实际监测的统计计算,采用综合营养状态指数法对西安浐河城市人造水面水体富营养状况进行了分析和综合评价,计算统计结果表明,浐河城市人造水面水质已呈中度富营养化等级,浐河城市人造水面水质呈有机型污染?⒄攵云湎肿?提出了以截污、清淤、补水、生物净化等工程为主的综合防治对策。     

景观湖泊水体综合整治技术研究——以福州西湖综合整治提升水体水质为例

通过对福州西湖水环境污染和生态破坏现状及存在问题分析,基于对景观水体生态需求和城区经济发展及周边环境特点基础上,结合福州西湖以往整治经验,提出截污控源、清淤疏浚、生态补水、增强水动力、保持生态流量,生态修复并重的技术路线,为西湖景观湖泊水体的综合整治指明方向。     

Engineering Practice for in Situ Repair of Polluted Water in Urban Lakes: the Example of Shuanglong Lake

阐述了双龙湖治理前水体富营养化污染状况及原因,介绍了双龙湖原位修复综合治理措施(如环湖截污、湖底生态清淤、复氧措施、边坡护理、湖滨带生态重建与景观恢复、后期监管等措施)。对原位修复综合治理措施实施后湖水净化效果进行了研究,结果表明:原位修复综合治理措施是治理双龙湖水体富营养化的有效措施,能够为国内外城市湖泊富营养化治理提供方法和技术借鉴。     

截干萌在银杏叶用园培养中的应用机理

研究了截干萌对银杏高生长,单叶干重、单株叶产量和黄酮含量的影响,结果表明：（１）第一次截干后,银杏高生长量比对照高,第二次截干后,距地３０ｃｍ截干的处理高生长也超过对照,约为对照的１２７％;（２）截干后,银杏单叶干重显著高于对照;（３）第一次截干后,银杏单株一显著对照,第二次截干后,３０ｃｍ截干高度的处理单株叶产量约为对照的１１２％,且随截干高度的增加,单株叶产量有随着增加的趋势;（４）截干后,银     

截干对叶用银杏生长及树形的影响

对叶用银杏大指品种１年生、２年生和３年生实生苗分别以不同留桩高度截干（或抹顶芽）处理，并对截干后当年的生长及树形指标进行调查。结果表明：（１）截干能矮化树体，扩大冠幅，减少光秃带距，加大部分处理树冠总体积；（２）截干能增加部分处理枝条数量及枝条总长；（３）对当年叶产量影响最大的指标分别为地径、长枝数、长枝长、高幅比及冠长比。因引截干能促进银杏形成优质叶用树形。     

城市水环境治理应用及探讨

河湖富营养化和河道黑臭是我国城市水环境普遍现象。实践证明清淤、截污、驳岸等市政工程手段不可能彻底解决河道水体污染问题,只有通过生物修复和生态恢复水环境生态系统功能,延长生物链,提高城市水环境生物多样性和自净能力,才能维护和保持水环境治理的成果,达到治标和治本的目的。     

互花米草生态工程能值分析

应用能值分析的方法,分别对江苏省射阳河口的３种治理方案（海滨潮间带盐沼湿地（方案Ａ）、互花米草湿地（方案Ｂ）和互花米草生态工程（方案Ｃ）进行能值计算和评价。计算结果为能值投入Ａ：２．８４Ｅ＋１２Ｓｅｊ＾－１ｍ＾－２;Ｂ：３．６７Ｅ＋１１Ｓｅｊ＾－１ｍ＾－２;Ｃ：８．９４Ｅ＋１１Ｓｅｊ＾－１ｍ＾－２;能值产出Ａ：５．７８Ｅ＋０９Ｓｅｊ＾－１ｍ＾－２ｍ;Ｂ：３．４４Ｅ＋１１Ｓｅｊ＾－１ｍ＾－２;Ｃ：３     

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