沈阳辉山水库流域环境污染现状调查及综合整治

对沈阳辉山水库流域工业、生活、农业及地面径流污染源进行了详细调查,监测和分析了水质和底泥质量,并有针对性地探讨了生态整治方案.结果显示：辉山水库流域主要污染源为生活源和农业源,每年入库污染量约为CODcr 400吨、总氮6 200吨、总磷700吨、污水120万吨、粪尿4700吨、固废200吨;水库流域水质类别为劣Ⅴ类,为重度污染,水库重度富营养化;底泥受到不同程度富营养化污染,并且辉山明渠起点采样点重金属总铅含量不合格;生态整治方案能改善辉山水库流域环境质量,实现生态流域和景观流域完美结合.     

筑坝对河流生态系统的影响及水库生态调度研究

阐述了大坝建造对河流生态系统的影响途径:通道阻隔、水库淹没、径流调节、水温变化等,探讨了大坝建造对河流水文特性、化学特性、通道作用等生态功能的影响方式,并结合实际案例,提出对于已建工程可通过水库运行调度方式的调整,减缓其生态影响.其主要包括:结合河道及流域的生态保护目标采取不同的调度措施,保证合理的下泄生态流量;采取联合调度方式保持水库及下游水质;采取人造洪峰保护水生生物及鱼类资源;对湿地、湖泊进行人工补水等.建议水库运行调度应在考虑工程功能的同时,兼顾坝下及水库的生态功能,以达到流域水资源开发与保护流域健康的生态系统相协调的目的.     

紧水滩水库流域生态环境现状与保护

紧水滩水库是浙江省重要的水利工程,其生态环境建设无疑对该区域可持续发展具有重要的意义。通过对浙江省紧水滩水库流域水质状况监测和植被分布情况的调查分析,提出了该流域在今后的建设和发展中对生态环境保护的建议。     

官厅水库入库口复合湿地系统对入库水质的净化

官厅水库入库口复合湿地系统建设以恢复官厅水库饮用水源地功能、保障供水安全、促进流域水资源可持续发展为目标,在对水库水源水质进行全面调杳、监测、分析基础上,借鉴国内外最新技术经验,采用并建设了前置库自然湿地和人工构造湿地的入库口复合湿地系统,突破了水库流域水生态环境治理中的关键与难点技术,成功实施了官厅水库水质改善和生态修复,形成了适宜于北方低温干旱地区水库水生态环境综合治理技术体系,为恢复官厅水库饮用水源功能发挥了关键作用,为水库水质保护和生态恢复探索了一条可行道路.     

官厅水库入库口复合湿地系统对入库水质的净化

官厅水库入库口复合湿地系统建设以恢复官厅水库饮用水源地功能、保障供水安全、促进流域水资源可持续发展为目标,在对水库水源水质进行全面调查、监测、分析基础上,借鉴国内外最新技术经验,采用并建设了前置库自然湿地和人工构造湿地的入库口复合湿地系统,突破了水库流域水生态环境治理中的关键与难点技术,成功实施了官厅水库水质改善和生态修复,形成了适宜于北方低温干旱地区水库水生态环境综合治理技术体系,为恢复官厅水库饮用水源功能发挥了关键作用,为水库水质保护和生态恢复探索了一条可行道路.     

山美水库流域沉积物中重金属污染现状评价

利用地积累指数法和潜在生态风险指数法,对泉州市山美水库流域沉积物中重金属污染进行评价.结果表明,山美水库流域沉积物中主要重金属污染物是Cu,Pb,Zn,Cd;从总体的污染程度分析,重金属污染物的污染程度从大到小排列次序为Cd(偏中度污染),Pb(轻度污染),Zn(轻度污染),Cu(无污染);从重金属污染物生态风险程度分析,重金属污染物构成生态风险程度均属于轻度,从大到小的排列次序为Cd,Pb,Cu,Zn;山美水库流域沉积物中重金属污染程度总体上属于轻度污染,但是其桃溪下游、湖洋溪上游、水库入库口的重金属污染较为严重.     

好水川流域坝系水资源优化配置模型研究

为了保证好水川流域生活用水、生态用水和农业用水,促进流域经济可持续发展,根据水资源开发利用现状和工程布局,将流域内的1座水库、11座骨干坝和15座中型淤地坝作为统一的供水水源,运用大系统多目标规划理论,建立了坝系联合优化配置模型.该模型综合考虑了经济、生态和社会效益,提高了水资源的利用效率,为流域合理分配水资源提供了依据.     

敖江山仔水库流域水环境管理与规划对策研究

本文针对敖江山仔水库流域存在的主要水环境问题,从流域水环境管理和规划的角度提出了该流域的三大科技需求,即饮用水源地安全保障技术研究需求,流域水环境容量与污染物总量控制技术研究需求和流域生态补偿机制研究需求。研究认为只有在流域范围内实现开展流域污染防治工程建设,流域水环境容量核定与总量分配以及建立和完善流域生态补偿机制三大管理与规划措施后,才能保证福州以及北翼环罗源湾地区社会、经济、环境的协调可持续发展。     

晋江流域河道水库最小生态需水量计算研究

根据晋江流域的特点，对该地区改善河道水环境的生态需水量、保证山美水库水质达标的生态需水量以及满足河道生态用水比例，分剐采用径污比计算法、水体允许纳污量计算法进行了计算。得出了晋江流域东溪永春段的生态需水量为20．9～24．4m^3／s；东溪南安段的生态需水量为12．9～15．5m^3／s；西溪安溪段的生态需水量为23．8～38．8m^3／s；西溪南安的生态需水量为7．8～8．1m^3／s。综合考虑用水和需水两方面的情况，计算得到的晋江流域河道内生态用水比例值达30％以上。可满足河道内生态需水比例的要求，为保证山美水库水体水质达标，在现有排污量条件下，山美水库来水量应保证在2．0亿m^3。     

白眉水库流域土地利用和覆盖动态研究

白眉水库作为马尾的饮用水源,同时为台湾马祖同胞供应饮用水,其保护意义十分巨大。该文基于"3S"技术,利用白眉水库流域1989年和2010年Landsat-TM遥感影像数据进行土地利用和覆盖动态研究,并分析区域内景观变化对生态环境的影响。最后对开展白眉水库流域生态环境保护提出相应的建议。     

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     

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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