长光路FTIR研究HFC152a光化学反应

用长光路ＦＴＩＲ技术研究氟里昂替代物ＨＦＣ１５２ａ（ＣＨ３ＣＨＦ２）在对流层中的化学反应，氯离子作反应的引发剂，用相对速度方法测定了ＨＦＣ１５２ａ与Ｃｌ原子反应速率常数为（２．３±０．５）×１０＾－１３ｃｍ＾３·ｍｏｌ＾－１·ｓ＾－１（２９８±Ｋ）。ＨＦＣ１５２ａ在对流层中的主要含氟光解产物为ＣＯＦ２，产率为８８％。有关反应机理进行了讨论。     

关中地区跨断层垂直形变的小波分析

运用小波变换方法分析了跨断层形变观测资料不同尺度的小波变换的细节信号变化特征.研究结果表明:1)不同尺度小波变换分解的细节信号显示出不同的时变特征.当尺度为1时,日均值的细节信号主要为噪声;尺度为2、4时,日均值细节信号主要为非平稳信号;尺度为5、6时,细节信号主要为平稳周期信号;2)每月观测一次和每4月观测一次的跨断层形变资料在尺度为3时的细节信号有较好的年周期特征;3)关中地区垂直形变小波处理结果与测点附近200km左右范围内的中强地震有较好的对应关系,口镇-关山断裂2005年最新资料显示异常,应给予关注.     

膨润土改性及其在分散大红溶液脱色处理中的应用

采用新型无机—有机改性方法，对浙江临安膨润土进行改性，有效地将双长链阳离子表面活性剂引入膨润土层间，从而提高了有机膨润土的亲油性和对废水中有机污染物的吸附能力。     

A perspective analysis on municipal solid waste(MSW) energy recovery in China

Ａｐｅｒｓｐｅｃｔｉｖｅａｎａｌｙｓｉｓｏｎｍｕｎｉｃｉｐａｌｓｏｌｉｄｗａｓｔｅ（ＭＳＷ）ｅｎｅｒｇｙｒｅｃｏｖｅｒｙｉｎＣｈｉｎａＨｅＰｉｎｊｉｎｇ，ＳｈａｏＬｉｍｉｎｇＮａｔｉｏｎａｌＬａｂｏｒａｔｏｒｙｏｆＰｏｌｕｔｉｏｎＣｏｎｔｒｏｌａｎ...     

城市垃圾与排水污泥混合堆肥配比的研究

配比是城市垃圾与排水系统污泥（污水厂污泥和管道污泥）混合堆肥工艺的关键参数。研究以理论和实验分析的方法，确定了合理的实验方法，即以堆反原料参数空隙率与堆肥过程评价参数（稳定周期或过程平均耗氧速率）的实验数据相关分析来确定适宜配比值域。城市垃圾与污水厂污泥适宜配比，城市垃圾与污水厂污泥、管道污泥适宜配比，分别为０．２６～０．３８、０．３～０．４（总污泥重量分率）。     

光照、温度和藻类对底泥释放磷的影响

在悬浮底泥与藻类体系中,不同温度和光照条件对底泥释放磷的影响方面的研究,尚未见到过报道。现对此进行了研究,并得出下述结论:有藻存在时底泥的释放量大于无藻存在时底泥的释放量。光照度大时(一定限度下),底泥的释放量稍有增加;温度升高时,底泥的释放量加大;水柱中含泥量大时,则磷的释放量也大。此工作对在不同条件下浅湖的内负荷量计算提供了基础。     

高强度开发下的上海农业环境问题与对策

文章指出高强度开发下上海市郊主要的农业污染问题，并分析了污染形成的原因，提出了符合可持续发展战略的污染探讨对策。     

Drag Partition and Its Possible Implications for Dust Emission

The mechanisms for dust emission involve the saltation of sand-sized particles and the transfer of momentum from the atmosphere to the surface. Roughness elements on aeolian surfaces influence the transfer of momentum through the partition of total momentum flux into a pressure drag on roughness elements and a skin drag on substrate surface. The objective of this study is to better understand the mechanisms for momentum transfer over rough surfaces and drag partition, so that better dust-emission parameterization schemes can be developed. A large-eddy simulation model is implemented for the purpose. We perform computational simulations of turbulent flows over individual and arrays of roughness elements. Further, we examine how roughness elements affect drag partition and dust emission. The results lead to a possible new concept of dust emission over rough surfaces.     

长输石油管道打孔盗油的形式及安全修复对策

通过对长输石油管道打孔盗油各种形式的分析,提出相应的安全修复方法及作业要点,阐述了为使修复作业能够在安全状态下进行,抢维修单位应该事先做好的一些方面的工作.     

Evaluation of ecosystem health for regional development in the southwestern Beijing, China

Ecosystem health assessment is one of the most important issues in regional ecological quality and safety studies. It also has a great significance to ecological conservation and regional development. This study focused on assessing the health status of forest, agriculture and urban ecosystems in the southwestern Beijing, China, including the Fangshan and Fengtai Districts. Based on field surveys and data collection, an assessment index system containing the vigor, organization and resilience factors was developed to measure the ecosystem health. Each index was scored from 1 to 5, representing five levels that contribute to the whole ecosystem health. The analytic hierarchy process (AHP) method was used to measure the weights of each index and three factors, and thus an overall score for a certain ecosystem was calculated. The results show that the forest ecosystem in the Fangshan District had higher health value than the Fengtai District, while the urban ecosystem had a slightly lower value in the Fangshan District than the Fengtai District. Both districts show lower resilience values in forest and urban ecosystems. Maintaining the ecosystem health will definitely benefit the long-term development of two districts. This study suggested that an approach for assessing the regional ecosystem health could be further developed to address spatial and synergy relationships between ecosystems and the three health factors.