大气监测仪器维护检修能力的评价

一直以来,环境大气监测的数据精度与维护成本,始终是数据应用部门和数据提供部门的难题之一.作者谷学先生根据多年的实档践,首次提出,运用数据对大气监测仪器维护管理进行评价的可行性,并试图建立仪器维护管理作业量化的评价系统.在仪器维护管理中,任何时候,都很难完全排除技术水平比较低的仪器维护检修人员,为了回避这种实际情况,作者通过对数字的分析指出,急需构建环境大气监测仪器维护管理业务能力的评价系统,并期待地方自制体通过评价手段,来选择和指导监测仪器维护管理人员.从而提高数据的精度和减低运转经费的开支.     

对“十五”地震重点项目档案工作的探讨

“十五”期间，重点项目档案管理工作成为地震档案管理工作的重要组成部分，重点项目档案形成周期长，数量大，知识密集、覆盖面广，科技含量高，给档案的收集、归档造成一定的难度。为了加强重点项目档案的管理工作，提高归档质量，要采取切实可行的措施，保证重点项目档案的完整、准确、系统，为防震减灾事业服务。     

戴明循环理论在规划环评工作程序中的应用初探

通过分析现阶段我国规划环评的现状和存在的问题，结合国内外规划环评及其工作程序的研究成果．提出使用戴明循环理论对现阶段的规划环评工作程序进行改进，使程序层次化、工作细分化，增强整个规划环评工作的可操作性．使规划环评工作落实到单位和人，明确责任，减少部门间冲突。戴明循环理论的引入．提高规划环评的评价效果和效率．为规划环评提供了一个有效科学的评价方法，有助于规划环评的顺利开展，使环境问题从源头上得到控制．适应建设和谐社会的需要。     

Urban garbage disposal and management in China

This paper, probing into the present situation of urban domestic garbage by analyzing its growing trend, compositional change and regional difference, reveals the problems existing in its disposul and management in China. Meanwhile, a questionnaire was conducted in five big cities around China for surveying urban residents‘ attitudes towards garbage disposal and management policies and measures. Results showed the outlmt of urban domestic garbage in Chinese cities is ever increasing, and the recoverable materials and energy in garbage composition are also increasing. The population growth, economic development, and increase of residents‘ expenditure level are the main factors influencing the growing output and changing composition of the garbage. Information acquired from the questionnaire showed that majority of the urban residentsare in favor d the garbage reduction policies and managerial measures and are willing to collaborate with municipal government in battling against gadbage. Based on the analysis and questionnaire, some policymaking-oriented suggestions such as operating the garbage disposal from a social welfare service to a sector of profit-gaining enterprises, transferring the garbage management from passive end control to active source control,promoting the classified garbage collection in cities around China, and charging garbage fees for its cleanup and disposal, have also been put forward in the paper.     

袋式除尘器在电炉烟尘治理上的应用

结合工程实例，介绍了“低阻、中温、大流量”除尘系统工艺在电炉上的应用，以及除尘系统各组成部分的性能特点和所采用的关键技术，阐述了关键技术的理论依据、设计原则和设计参数。     

复合多管除尘器在电厂煤粉锅炉除尘中的应用

把具有惯性沉降除尘和多进口旋风子除尘两级除尘一体的复合多管除尘器用于电厂煤粉锅炉烟气除尘 ,以替换原有的多管旋风除尘器。运行测试表明 :用于液态排渣煤粉锅炉 ,其除尘效率达到 90 %～ 93% ;用于固态排渣煤粉锅炉 ,其除尘效率达到 93%～ 95%。     

中国农村生活垃圾管理模式探讨——三级分化 有效治理农村生活垃圾

针对农村生活垃圾及其处理的特点，为降低难度更有效地处理好农村生活垃圾，提出了对农村生活垃圾进行三次分化。用不同措施分别处理不同特点的农村生活垃圾，从而使其处理难度和费用最小化。首先分类收集作为基础，按不同类别对农村生活垃圾进行收集；其次，分离出产生源集中、规模较大和成分较单一的乡镇街道、畜禽养殖场和乡村企业等三类农村垃圾进行专门管理；最后依据有机垃圾的不同特点，分成农业主导型、非农业主导型和城郊型三类区域进行专门的垃圾处理。     

Investigations on removal of SO_2 from flue gas by aerosol formation in pulsed corona discharge process

ＩｎｖｅｓｔｉｇａｔｉｏｎｓｏｎｒｅｍｏｖａｌｏｆＳＯ２ｆｒｏｍｆｌｕｅｇａｓｂｙａｅｒｏｓｏｌｆｏｒｍａｔｉｏｎｉｎｐｕｌｓｅｄｃｏｒｏｎａｄｉｓｃｈａｒｇｅｐｒｏｃｅｓＺｈａｏＺｈｉｂｉｎ，ＬｉｕＪｉｙｏｎｇＤｅｐａｒｔｍｅｎｔｏｆＥｎｖｉ...     

几种典型除尘器收集效率的扩散模型研究

在气流速度均匀假设下用扩散理论建立了在重力沉降室、离心式除尘器和静电除尘器中粉尘粒子的浓度分布，由此浓度分布模型和除尘效率定义得出这3种典型除尘器的分级除尘效率具有相同的表达式：η=1—exp(-Dλ^2L/u)．为了使这一由扩散理论导出的分级效率公式能够用于实际计算，给出了扩散系数D的确定方法和常数λ的计算式．     

Evolutionary aspects of perfume collection in male euglossine bees (Hymenoptera) and of nest deception in bee-pollinated flowers

Summary A fascinating pollination system has been evolved between perfume producing flowers and perfume collecting male euglossine bees in the neotropics. Detailed investigations have contributed to an understanding of the interactions between euglossine males and flowers as a pollination system. The role which the collected perfume plays in the reproductive behaviour of euglossine bees is not fully understood. A favoured hypothesis suggests that the collected fragrances are used as precursors for male sex pheromones and thus serve to attract conspecific males or females. It is not known how perfume collection behaviour evolved. Here, an evolutionary approach presents a new hypothesis which suggests that the evolution of perfume collection in euglossine males is based upon pre-existing signals which were attractive to females and males. It is further suggested that, at the evolutionary outset, flowers mimicked nest sites to deceive nest-seeking euglossine bees. In addition, a comparative study was undertaken on the phenomena of nest-mimicking flowers in related bee families.