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131.
利用富集培养的方法从城镇污水处理厂的活性污泥中分离到1株好氧反硝化菌,命名为CW。通过形态、生理生化特征和16SrRNA基因序列分析,初步鉴定为睾丸酮丛毛单胞菌(Comamonas testosteroni)。生长特性的研究表明最佳碳源是乙酸钠,最佳碳氮比10:1,最佳DO4.0~6.0mg/L,在此条件下培养24h后,对初始浓度108mg/L的硝酸盐降到27mg/L,去除率达到75%,亚硝酸盐积累仅为4mg/L。以组合载体为填料,挂膜后对污水进行处理,HRT48h,DO5.0mg/L左右,氨氮去除率达到95%左右,最终的NO3-N和NO2-N分别由起始的40~52mg/L和21~28mg/L降为--12~15mg/L和7~9mg/L。 相似文献
133.
The co-benefits concept implies a ‘win–win’ strategy to address two or more goals with a single policy measure. There is much scholarly and policy attention paid to this concept as a way to avoid making trade-offs between developmental and environmental issues. However, there is no review paper that reviews the nature, evolution, strengths and limits of the co-benefits concept in relation to climate change. Hence, this review article addresses the question: What does the literature tell us about the definition, application and use of the co-benefits concept? Using a literature review approach, this article explains the evolution of the co-benefits concept and its strengths and weaknesses. We conclude that while the concept has tremendous advocacy potential in dealing with the problem that the costs and benefits of climate policy are temporally and spatially not aligned, its de facto potential is limited as mostly economists have engaged with this concept, and there is little trans-disciplinary work undertaken that also looks at the politics and institutional aspects of co-benefits. The article thus provides an impetus to rethink current approaches to studying co-benefits and points to the need for inter- and trans-disciplinary research drawing on economic, political and social sciences. 相似文献
134.
Richard L. Ottinger 《Natural resources forum》2006,30(4):318-327
The imperatives for reducing the world's dependence on fossil and nuclear fuels have multiplied manifold in recent years with the advent of worldwide terrorism. These new dangers come in addition to the imperatives of addressing the dire consequences of global warming and devastating pollution that accompany the use of these fossil fuels. Reducing dependence on these unsafe and unreliable energy resources should be a top global priority. Implementation of proven energy efficiency technologies offers the world the fastest, safest, most economic and most environmentally benign way to alleviate these threats. This article outlines available efficiency measures, their economic advantages and means by which they may be and have been implemented. While examples of efficiency applications from both developed and developing countries are given, the article relies heavily on experience with energy efficiency in the United States, where data on efficiency is particularly abundant. 相似文献
135.
Environmental psychology with a Latin American taste 总被引:1,自引:1,他引:0
This paper describes and analyzes the actual and potential contributions of Latin American environmental psychology (EP) to the study of environment–behaviour interactions. Latin America is a richly socoi- and bio-diverse region; the multitude of problems caused by threats to its diversity requires especial conceptual and methodological approaches for studying and solving those problems. Latin American environmental psychologists have contributed ideas and studies according to the specificities (indigenous psychologies) of their nations. These specificities include Latin American traditions of collective participation, holistic worldviews, emotional attachment to places and other individuals, biospheric attitudes and preference for diversity, among others, in addition to the cultural traditions inherited from Europe. These traditions are considered in EP studies conducted by Latin American authors, which are described and commented upon. The importance of formative programs for a professionalizing environmental psychology in the area is discussed. Finally, this paper envisions the future of EP in Latin America. Such a forecast includes our vision of how environmental psychologists in the region could contribute to the general development of a universal environmental psychology. 相似文献
136.
20年来,上海市已培育、发展、形成了一支稳定的环境科学研究队伍。回顾了这支队伍承担的上海市环保局下达的470余项科研项目中,一些主要的课题取得了卓越成果。在回顾的同时,对加强环境保护科研工作提出了五点意见。 相似文献
137.
Research core and framework of sustainability science 总被引:8,自引:6,他引:2
Yuya Kajikawa 《Sustainability Science》2008,3(2):215-239
This paper reviews recent achievements in sustainability science and discusses the research core and framework of sustainability
science. We analyze and organize papers published in three selected core journals of sustainability science: Sustainability Science, Proceedings of the National Academy of Sciences of the United States of America, and Sustainability: Science, Practice, & Policy. Papers are organized into three categories: sustainability and its definition, domain-oriented research, and a research
framework for sustainability science. First, we provide a short history and define the basic characteristics of sustainability;
then we review current efforts in the following research domains: climate, biodiversity, agriculture, fishery, forestry, energy
and resources, water, economic development, health, and lifestyle. Finally, we propose a research framework for sustainability
science that includes the following components: goal setting, indicator setting, indicator measurement, causal chain analysis,
forecasting, backcasting, and problem–solution chain analysis. We emphasize the importance of this last component for improving
situations and attaining goals. 相似文献
138.
A classic research approach is to optimize experimental design and available resources. However, that approach does not guarantee that results will be useful. This article takes the view that research should not be undertaken unless there is assurance that final results will be significant to a level specified before any work is begun. Given that assurance, the relationship between cost and statistical significance is explored, a new approach to optimization s developed, and the use of models in research design is considered. 相似文献
139.
全球高致病性禽流感灾害的时空变异 总被引:2,自引:0,他引:2
利用多种资源建立了全球高致病性禽流感灾害数据库,基于ArcGIS的空间分析和统计模块,对全球高致病性禽流感灾害的时空变异进行分析。结果表明:2003年以来全球高致病性禽流感爆发有三个流行高峰期,正好在2004和2005年的冬季;全球高致病性禽流感爆发的频率在最近几年里呈不断上升的趋势,地理空间范围不断扩散;高致病性禽流感的爆发在时间和空间上表现得更加集中。全球高致病性禽流感分布的总体特征表明在家禽密度高的区域,邻近家禽生产地的湖泊和水库附近,或者鸟类迁徒路线的交叉处,特别是那些重叠的区域可能是高致病性禽流感的多发地区。上述结果可为高致病性禽流感灾害的防控提供借鉴和依据。 相似文献
140.