Comparison of the thermal properties of clay samples as potential walling material for naturally cooled building design

ＩｎｔｒｏｄｕｃｔｉｏｎＨｅａｔｗｈｉｃｈｉｓｔｒａｎｓｍｉｔｔｅｄｔｈｒｏｕｇｈｗａｌｌｓ ,ｅｉｔｈｅｒｄｕｒｉｎｇｔｈｅｄａｙｏｒｒｅｔａｉｎｅｄｂｙｔｈｅｗａｌｌｓａｎｄｔｒａｎｓｍｉｔｔｅｄａｔｎｉｇｈｔｂｙｔｈｅｐｒｏｃｅｓｓｅｓｏｆｃｏｎｄｕｃｔｉｏｎａｎｄｒａｄｉａｔｉｏｎｉｓｏｎｅｏｆｔｈｅｆａｃｔｏｒｓｃａｕｓｉｎｇｄｉｓｃｏｍｆｏｒｔｉｎｉｎｔｅｒｉｏｒｓｐａｃｅｓｉｎｔｈｅｔｒｏｐｉｃａｌｒｅｇｉｏｎ .Ｔｈｅｅｆｆｅｃｔｏｆｔｈｉｓｈｅａｔｃｏｕｌｄｂｅｍｉｎｉｍｉｚｅｄｏ…     

近来宿迁地震台地磁观测所受干扰之分析

2006年7月初期,宿迁地震台开工新建一监测楼,楼中使用了很多钢筋和其它铁磁性材料,由于它离地磁房较近,这些铁磁性材料所产生的磁场给该台的地磁观测造成了很大的干扰.本文就宿迁台地磁场的观测情况、根据IAGA推荐的理论公式计算理论上的干扰、实际产生的干扰效果等方面给出简单陈述,并就其中的因果关系做出简单的分析和推理,以求对这次干扰做一合理的解释.     

The role of public policy in advancement of product service systems

This article discusses developments in the area of product service systems (PSS) and the need to facilitate the proliferation of the PSS approach through public policies. The article argues that policies that establish the framework conditions for environmental improvement are preferable to detailed legislation as they favour environmentally superior PSS. However, there is also a need for more specifically targeted policy measures that stimulate knowledge creation and dissemination in the PSS area. This article suggests that informative policy measures should be used by authorities and reviews the results from the functional programme of the Swedish EPA as an example of this type of policy.     

天然锰砂去除工业冷却水中的锰、铁污染

采用天然锰砂滤料接触氧化法对去除工业冷却水中锰、铁的工艺条件进行了研究。滤料粒径０５ｍｍ～１０ｍｍ，滤床高８００ｍｍ，滤速１０ｍ／ｈ～１２ｍ／ｈ，工作周期９６ｈ，反冲洗强度１３Ｌ／ｍ２·ｓ，反冲洗时间５ｍｉｎ～７ｍｉｎ。出水Ｍｎ２＋浓度达００４ｍｇ／Ｌ以下。锰去除率８０％以上，总铁浓度可达检验不出的水平。     

湿式除尘器在汽轮机系统中的应用

结合工程实例介绍了冲击水浴除尘器的工艺原理、性能特点、系统供水工艺、防腐、设备参数和处理效果，以及工程实践的体会与建议。针对湿式除尘器的关键工序——防腐，从防腐材料的化学稳定性、热稳定性、耐磨性以及防腐工序的施工几方面进行了详尽的阐述。     

固氟剂应用于砖瓦厂氟治理的初步研究

首次将固氟剂应用于砖瓦厂的氟治理试验，结果表明，在所选用的４种固氟剂中，以白泥的固氟效果最佳，经过烧制，对以红壤和青紫泥为材料制成的红砖的固氟率，在实验室模拟条件试验中分别为３８．０７％和５２．９０％，在砖瓦厂生产条件试验分别为４８．０３％和５１．３５％，白泥作为一种工业废物，应用于砖瓦厂氟治理，特别是无组织排放的控制，不仅颇具良好前景，而且为白泥的处置利用提供一条“以废治废”的新途径。     

天津市经济—环境系统的物质流分析

利用物质流分析工具对天津市经济—环境系统中的物质流进行了分析,分析结果表明:2004年天津市的物质需求总量达到8.68亿t,且增长趋势明显,其中基础设施建设对环境造成了较大扰动,进口物质大于出口物质;城市环境容量总体处于饱和状态,水体污染严重;物质消耗强度不断增长,资源的利用效率处于较低水平。最后,针对存在的问题,提出相应的措施和建议。     

A study on the Spatial Distribution of Nitrogen and Phosphorus Balance, and Regional Nitrogen Flow Through Crop Production

The spatial distribution patterns of the nitrogen and phosphorus input/intake amounts in crop production within two small basins are examined, based upon a cropping unit distribution map that is obtained from remote sensing data analysis. Firstly, we examine the availability and suitability of approaches to the spatial distribution analysis of cultivation patterns classified from material flow characteristics of crop production using seasonal remote-sensing data. Secondly, material flow units in crop production are grouped according to the cultivation patterns obtained from the remote-sensing data analysis. Consequently, the spatial patterns of the amounts of both nitrogen and phosphorus inputs/intakes through crop production on farmland are examined and their spatial distribution maps are prepared according to the material flow units. In addition, we developed a nitrogen flow and runoff model and the model is simulated based on the examination of the results of spatial distribution patterns of the material flow units. The annual nitrogen runoff from small catchments, where various crops are cultivated, varies from 2.7 kg ha^–1 year^–1 to 108 kg ha^–1 year^–1 and the annual balanced losses of nitrogen in small catchments varied from –30 kg ha^–1 year^–1 to 101 kg ha^–1 year^–1. Also, the monthly changes in soil nitrogen of each material flow unit is estimated at –55 kg ha^–1 as a maximum decrease and 114 kg ha^–1 as a maximum increase. These results indicate that the spatial distribution patterns of nutrient input and intake through agricultural activities should be considered when analyzing the material flows and nutritient movement in soil–water systems in rural areas for watershed environmental control and regional agricultural management.     

室内空气污染概述

由于燃料燃烧、烹饪、人类活动、不合格建材和装饰材料的使用，房屋的密闭性结构等诸多因素，使室内空气污染远高于室外，从而严重地危害人们的健康，甚至导致多种疾病的发生。文章较全面地概述了室内空气污染的来源和类型，对人体的危害情况、目前的分析测试方法和标准样样品状况。     

轻质隔爆材料的实验研究

对数十种材料的隔爆性能进行了研究。用上下法分别求出不同材料的雷管径向殉爆以及轴向殉爆的半爆距离Ｌ５０。针对材料密度小，隔爆效果好的要求，定义了一个既考虑材料密度又考虑其隔爆性能的优化参数，并以此作为判据，对实验材料进行了优选