镇江市浅层地热能地埋管地源热泵开发利用适宜性分区

为了实现镇江市节能减排及浅层地热能的有效开发和可持续利用,系统分析镇江市基础地质条件和岩土体热物性特征,结合浅层地热能资源开发利用现状,采用层次分析法对地埋管地源热泵开发利用进行适宜性分区.研究区总面积752.4 km~2,地埋管地源热泵的适宜区面积422.55 km~2,主要分布在江心洲、世业洲、高桥、大港及丹徒新区等地区;较适宜区面积116.09 km~2,主要分布在市区、谏壁等地区,两者占全区面积的71.59%.研究成果可为镇江市及其他地区合理开发利用浅层地热能资源提供借鉴.     

许昌地源热泵适宜性分区探讨

浅层地热能是一种新型可再生利用能源,通过一定的手段进行有效的勘查,查明许昌区域内浅层地热能赋存的水文、地质条件,划分地源热泵适宜区,为开发利用浅层地热能提供技术依据。     

场地浅层地热能开发设计的思路浅析

场地浅层地热能开发设计应在确定该场地是否存在浅层地热能资源、是否具有开发必要性的基础上,通过勘查评价,提出适宜的、合理的开发利用设计。     

兰州市城区浅层地热能开发利用现状浅析

兰州地处我国西部内陆,是甘肃省政治、经济、文化和科技中心,同时也是我国西部重要的经济及工业重镇.区内生态环境脆弱、环境污染严重等问题突出.随着经济、社会的发展,这些问题越来越制约着城市发展和居民生活质量的提高.着重对区内浅层地热能开发利用现状、效益进行论述,并初步分析了制约兰州浅层地热能开发利用的主要因素,为进一步开发...     

张掖市城区浅层水源热能分析

地下水源热泵系统是浅层地温能开发利用的一种主要方式,近年来在国内被广泛推广。在充分利用现有水文地质工程地质资料的基础上,查明城区内地下水系统所蕴藏的浅层低温能资源数量、质量和分布规律,并结合张掖市城区局部应用地下水源热泵实际工况及对环境的影响进行了分析,为该市浅层地热能资源大面积开发规划提供依据,也是保证浅层水源热能资源利用走向科学化、规范化的重要环节。     

甘肃省各主要城市浅层地温能开发利用现状及研究

近年来,甘肃省各主要城市浅层地温能开发利用得到了较快的发展。调查各城市浅层地温能开发利用现状,分析存在问题,进行适宜性评价,计算浅层地温能热容量,对各城市浅层地温能开发利用,起到一定的引导作用。     

兰州市区某场地地源热泵热响应试验

浅层地热能是地热资源的重要组成部分,开发浅层地热能必须以地质勘查评价为基础,需要掌握岩土体初始温度、导热系数等热物性参数,热响应试验是获取这些参数的基本方法。本文在兰州市区某场地进行了2个钻孔的地层初始温度、两种功率(4kW、8kW)恒热量加热、加热恒温度和制冷恒温度五种工况下的现场试验。获得了研究区地层的初始温度为14.94℃,导热系数为2.7W/(m.K),单孔每延米排热量、吸热量分别为63.07、26.14W/m,并据此评价了研究区的浅层地热能资源。     

基于微动技术的浅层地热资源勘探与储量精细评价方法研究

作为未来能源新星的地热资源逐步受到青睐,其中,浅层地热能的利用至关重要。本文介绍了微动探测技术,针对城市地下空间浅层地质结构探测、浅层储量评价精度等不同的实际应用问题和现实工程需求,以迷你阵列微动探测方法为基础,用于精细识别浅层地质结构,获得岩土层厚度信息,精细化评价地热储量。此外,利用数据拟合技术建立地球物理参数与土体热导率的经验关系,预测测试目标区的土体热导率。青岛即墨区的案例,说明了此方法在地热资源开发利用中的应用效果。     

浅谈浅层地热电法勘探原理及多参数处理

地热是一种新兴能源,广泛应用于发电、采暖、医疗、旅游等。长期以来人们多在勘探高温热泉,对浅层中低温热泉开采利用不足。浅层地热一般分布范围较大,地热资源开采潜力大,地热资源蕴藏丰富,在我国大多数中生代沉积盆地内几乎均匀有分布,应是当前地热能开发的重点对象。本文介绍了地热在的地质基础和物理现象以及电法勘探在寻找浅层地热中的原理及多参数的数据分析。     

浅层地热能与干热岩资源潜力及其开发前景对比分析

 浅层地热能与干热岩是地热能中最具潜力的部分,前者通过给建筑供暖(制冷)减少国家能源需求,后者则通过高温发电增加国家可再生能源供给,两者都具有资源潜力大、清洁环保的优势,其开发技术地源热泵与增强型地热系统也具有原理上的相似性。本文对比分析了浅层地温能与干热岩的基本概念、资源潜力、节能效果、经济效益、环境影响等,讨论了两者间的优缺点及开发前景,针对中国地热资源赋存特征及国家能源发展规划,提出了未来地热向深部发展的建议。     

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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