大型电厂循环水联通运行技术措施与效益分析

嘉兴电厂一期机组因循环水暖流影响,将循环水改接由二期循环水提供,降低了循环水温度,提高了机组真空,确保了夏季工况机组带负荷能力。在运行操作中,制订合理的调整、监视措施,确保循环水联通方式下的机组可靠和经济运行。一期机组循环水取自二期供水后,进水温度下降、真空提高,机组供电煤耗下降明显,同时也获得了其他社会效益。     

大温差水系统运用于数据中心空调节能性分析

对大温差空调水系统应用于数据中心项目进行了节能性分析,基于假定的系统模型对不同冷冻水供回水温差条件下系统的制冷主机能耗、冷冻水泵能耗以及末端精密空调设备能耗进行了计算。计算结果表明,增大供回水温差对于数据中心空调系统能效提升具有积极意义。     

黄沙坨双重介质油藏渗流规律试验研究

为了搞清和认识具双重孔隙介质的黄沙坨粗面岩潜山油藏的渗流特征规律,解决该油藏能否实施注水开发的难点,主要开展了双重介质三维岩块渗吸试验方法的建立、粗面岩岩心模型制备、相似准数的选择等一系列物模试验技术的研制攻关,并进行了微观渗流特征评价试验（岩石毛管压力、相对渗透率、水驱油效率、裂缝系统和基质岩块系统渗吸实验）解决了双重孔隙介质储层微观评价等复杂油藏渗流试验的难题。形成了双重介质油藏渗流试验系列配套测试技术,为黄沙坨等特殊油藏储层微观评价及开发方式的确立,提供了难得的试验基础参数。     

Community media: “Flavour of the decade” worldwide. A keynote address at the AMARC Europe Conference

This is a call to recognise community media as a vital and indispensable element of the media system in society. The text is an edited version of the keynote address delivered by the author during the AMARC Europe Conference “Supporting Positive Change in Europe through the Expansion of Community Radio” in Bucharest, December 12–14, 2008.     

The legal and economic framework of the third audiovisual sector in UK,Netherlands, Switzerland,Niedersachsen (Germany) and Ireland

The multiple roles and services of community media have gained new attention in recent years throughout many countries, particularly in the context of maintaining and promoting independent local communication. The present work is intended to provide a basis for discussion on the legal foundation of, and support for community media. It outlines a series of recommendations for further media–political discussions with the third broadcasting sector based on community media experiences in five European countries: the Netherlands, Ireland, Germany (Lower Saxony), Switzerland and Britain.     

冷静物质表象下的丰富文化内核 同济大学传播与艺术学院

文章从场所特征与整体策略、功能定义与空间情态以及材料、细部与意义等方面对同济大学传播与艺术学院设计进行深入解读,试图挖掘这座建筑冷静物质表象下的丰富文化内核。     

媒体对城乡规划的作用和影响——基于规划事件典型案例的分析

媒体是城乡规划信息传播的桥梁,媒体广泛介入城乡规划可发挥监督规划实施和行政行为、表达利益诉求和改进建议、宣传规划信息和专业知识的积极作用,但也可能产生传播不实报道和不当信息、误导公众视线和社会舆论等消极影响。因此,在行动上应当吸收积极合理的建议适时改进,关注持续反复纷争诉诸法制;在制度上应完善规划信息媒体发布机制,建立规划热点媒体讨论平台,促进城乡规划信息的有效传播。     

色散介质混合模型的通用FDTD 方法

本文根据三种色散介质模型（即德拜模型,洛仑兹模型和德鲁模型）的介电系数线性组合可写成以j? 为自变量的分式多项式形式的特点,在文献[5]的基础之上,将移位算子时域有限差分方法（SO-FDTD）推广,使其适于色散介质混合模型电磁计算的需要。数值计算结果和解析解的比较说明了本文算法的可行性。     

Adobe发布平台在新媒体中的应用

本文将Adobe公司推出的Flex＋Flash Media Sewer的网络发布平台以及Flash Lite＋Flash Cast的移动网络发布平台与SMG的东方宽频、东方龙等新媒体发布平台进行比较。将Adobe发布平台对现有业务的覆盖进行了分析。并展望了其在国内的应用前景。     

Determining the fraction of pharmaceutical residues in wastewater originating from a hospital

Pharmaceutical residues in water are frequently analysed and discussed in connection with sewage treatment, ecotoxicity and, natural and drinking water quality. Among different localities hospitals are suspected, or implied, to be a major and highly variable source of pharmaceuticals that substantially contribute to the total wastewater load. In this study, the contribution of pharmaceuticals from a hospital to a sewage treatment plant (STP) serving around 45,000 inhabitants was evaluated. Approximately 200 hospital beds result in a hospital bed density of 4.4 beds per 1000 inhabitants, which is a typical value for developed world countries. Prior to sampling, a sound systems analysis was performed, and a sophisticated continuous flow-proportional sampling regime was applied. Hence, overall experimental uncertainty was reduced to a minimum, and measurements provide clear evidence that, for 28 of 59 investigated substances, over 85% of the pharmaceutical residue loads do not originate from the hospital when applying a conservative error estimation. Only for 2 substances, trimethoprim (18%) and roxithromycin (56%), was the maximum observed contribution of the hospital >15%. On average, the contribution of the hospital for the compounds detected in both, hospital effluent and sewage treatment plant influent was small and fairly constant. Five compounds were only detected in hospital wastewater, and 24 neither in the hospital wastewater nor in the total wastewater at the influent of the STP. For these compounds no experimental contribution could be calculated. For the compounds where audit data for both the national consumption and the specific hospital under investigation were available, a prediction of the fraction of pharmaceuticals originating from the hospital was performed. Three quarters of the compounds, classified with the existing audit data, were in the same “hospital contribution category” as determined by measurements. For most of the other compounds, plausible reasons could be identified to explain the observed deviations.