Die Bestimmung des Turnovers von ATP,Kreatinphosphat und Orthophosphat in lebenden Muskeln mittels H2O18 und anschließender Aktivierung durch Protonen-Beschuß

The Science of Nature -     

Land use as a mitigation strategy for the water-quality impacts of global warming: a scenario analysis on two watersheds in the Ohio River Basin

This study uses an integrative approach to study the water-quality impacts of future global climate and land-use changes. In this study, changing land-use types was used as a mitigation strategy to reduce the adverse impacts of global climate change on water resources. The climate scenarios were based on projections made by the Intergovernmental Panel on Climate Change (IPCC) and the United Kingdom Hadley Centre's climate model (HadCM2). The Thornthwaite water-balance model was coupled with a land-use model (L-THIA) to investigate the hydrologic effects of future climate and land-use changes in the Ohio River Basin. The land-use model is based on the Soil Conservation Service's curve-number method. It uses the curve number, an index of land use and soil type, to calculate runoff volume and depth. The ArcView programming language, Avenue, was used to integrate the two models into a geographic information system (GIS). An output of the water-balance model, daily precipitation values adjusted for potential evapotranspiration, served as one of the inputs into the land-use model. Two watersheds were used in the present study: one containing the city of Cincinnati on the main stem of the Ohio River, and one containing the city of Columbus on a tributary of the Ohio River. These cities represent two major metropolitan areas in the Ohio River Basin with different land uses experiencing different rates of population growth. The projected hypothetical land-use changes were based on linear extrapolations of current population data. Results of the analyses indicate that conversion from agricultural land use to low-density residential land use may decrease the amount of surface runoff. The land-use practices which generate the least amount of runoff are forest, low-density residential, and agriculture; whereas high-density residential and commercial land-use types produce the highest runoff. The hydrologic soil type present was also an important factor in determining the amount of runoff and non-point-source pollution. A runoff-depth matrix and total nitrogen matrix were created for Cincinnati and Columbus to describe possible land-use mitigation measures in response to global climate change. The differences in Cincinnati and Columbus were due to differences in geographic location, air temperature, and total runoff. The results of this study may be useful to planners and policy makers for defining the possible impacts of future global climate and land-use changes on water resources.     

生活垃圾生物处理的研究与展望

综述了国内外生活垃圾生物处理的研究进展和目前生活垃圾微生物研究水平，以及生活垃圾处理发展趋势与新动向，在此基础上提出了生活垃圾处理的建议和展望。     

不同气氛下燃煤SO2的排放规律研究

在立式管状电加热炉上对合山高硫煤在不同的气氛、温度以及Ca／S比的条件下进行了动态燃烧实验，对收集的气体产物进行了红外光谱分析，并讨论了CO2浓度以及温度等因素对SO2释放的影响。结果表明：不同浓度的CO2气氛对煤燃烧过程中硫的释放以及石灰石的固硫效率有着不同的影响，在高于900℃以后，较之空气气氛下，无论是否存在钙基固硫剂，其它三种02／C02气氛下S02的排放量都比较低，且在不同C02浓度下，温度对S02的排放影响不一致。